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class="skin--responsive skin-vector skin-vector-search-vue mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-0 ns-subject mw-editable page-Llên_Natur rootpage-Llên_Natur skin-vector-2022 action-view"><a class="mw-jump-link" href="#bodyContent">Neidio i'r cynnwys</a> <div class="vector-header-container"> <header class="vector-header mw-header"> <div class="vector-header-start"> <nav class="vector-main-menu-landmark" aria-label="Safle"> <div id="vector-main-menu-dropdown" class="vector-dropdown vector-main-menu-dropdown vector-button-flush-left vector-button-flush-right" > <input type="checkbox" id="vector-main-menu-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-main-menu-dropdown" class="vector-dropdown-checkbox " aria-label="Prif ddewislen" > <label id="vector-main-menu-dropdown-label" for="vector-main-menu-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-menu mw-ui-icon-wikimedia-menu"></span> <span class="vector-dropdown-label-text">Prif ddewislen</span> </label> <div class="vector-dropdown-content"> <div id="vector-main-menu-unpinned-container" class="vector-unpinned-container"> <div id="vector-main-menu" class="vector-main-menu vector-pinnable-element"> <div class="vector-pinnable-header vector-main-menu-pinnable-header vector-pinnable-header-unpinned" data-feature-name="main-menu-pinned" data-pinnable-element-id="vector-main-menu" data-pinned-container-id="vector-main-menu-pinned-container" data-unpinned-container-id="vector-main-menu-unpinned-container" > <div class="vector-pinnable-header-label">Prif ddewislen</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-main-menu.pin">symud i'r bar ochr</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-main-menu.unpin">cuddio</button> </div> <div id="p-navigation" class="vector-menu mw-portlet mw-portlet-navigation" > <div class="vector-menu-heading"> Panel llywio </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-mainpage" class="mw-list-item"><a href="/wiki/Hafan" title="Ymweld â'r Hafan [z]" accesskey="z"><span>Hafan</span></a></li><li id="n-portal" class="mw-list-item"><a href="/wiki/Wicipedia:Porth_y_Gymuned" title="Pethau i'w gwneud, adnoddau a thudalennau'r gymuned"><span>Porth y Gymuned</span></a></li><li id="n-cafe" class="mw-list-item"><a href="/wiki/Wicipedia:Y_Caffi"><span>Y Caffi</span></a></li><li id="n-currentevents" class="mw-list-item"><a href="/wiki/Categori:Materion_cyfoes" title="Gwybodaeth yn gysylltiedig â materion cyfoes"><span>Materion cyfoes</span></a></li><li id="n-recentchanges" class="mw-list-item"><a href="/wiki/Arbennig:RecentChanges" title="Rhestr y newidiadau diweddar ar y wici. [r]" accesskey="r"><span>Newidiadau diweddar</span></a></li><li id="n-randompage" class="mw-list-item"><a href="/wiki/Arbennig:Random" title="Llwytho tudalen ar hap [x]" accesskey="x"><span>Erthygl ar hap</span></a></li><li id="n-help" class="mw-list-item"><a href="/wiki/Wicipedia:Cymorth" title="Tudalennau cymorth"><span>Cymorth</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> <a href="/wiki/Hafan" class="mw-logo"> <img class="mw-logo-icon" src="/static/images/icons/wikipedia.png" alt="" aria-hidden="true" height="50" width="50"> <span class="mw-logo-container skin-invert"> <img class="mw-logo-wordmark" alt="Wicipedia" src="/static/images/mobile/copyright/wikipedia-wordmark-cy.svg" style="width: 7.5em; height: 1.125em;"> <img class="mw-logo-tagline" alt="" src="/static/images/mobile/copyright/wikipedia-tagline-cy.svg" width="120" height="13" style="width: 7.5em; height: 0.8125em;"> </span> </a> </div> <div class="vector-header-end"> <div id="p-search" role="search" class="vector-search-box-vue vector-search-box-collapses vector-search-box-show-thumbnail vector-search-box-auto-expand-width vector-search-box"> <a href="/wiki/Arbennig:Search" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="Chwilio Wicipedia [f]" accesskey="f"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Chwilio</span> </a> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail cdx-typeahead-search--auto-expand-width"> <form action="/w/index.php" id="searchform" class="cdx-search-input cdx-search-input--has-end-button"> <div id="simpleSearch" class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Chwilio Wicipedia" aria-label="Chwilio Wicipedia" autocapitalize="sentences" title="Chwilio Wicipedia [f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Arbennig:Search"> </div> <button class="cdx-button cdx-search-input__end-button">Chwilio</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="Offer personol"> <div class="vector-user-links-main"> <div id="p-vector-user-menu-preferences" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-userpage" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <nav class="vector-appearance-landmark" aria-label="Gwedd"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Newidiwch ymddangosiad maint ffont, lled a lliw y dudalen" > <input type="checkbox" id="vector-appearance-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-appearance-dropdown" class="vector-dropdown-checkbox " aria-label="Gwedd" > <label id="vector-appearance-dropdown-label" for="vector-appearance-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-appearance mw-ui-icon-wikimedia-appearance"></span> <span class="vector-dropdown-label-text">Gwedd</span> </label> <div class="vector-dropdown-content"> <div id="vector-appearance-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div id="p-vector-user-menu-notifications" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-overflow" class="vector-menu mw-portlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_cy.wikipedia.org&uselang=cy" class=""><span>Rhoi</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Arbennig:CreateAccount&returnto=Ll%C3%AAn+Natur" title="Rydym yn argymell eich bod yn creu cyfri ac yn menwgofnodi. Fodd bynnag, dydy hyn ddim yn orfodol" class=""><span>Creu cyfrif</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Arbennig:UserLogin&returnto=Ll%C3%AAn+Natur" title="Fe'ch anogir i fewngofnodi, er nad oes rhaid gwneud. [o]" accesskey="o" class=""><span>Mewngofnodi</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Rhagor o opsiynau" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Offer personol" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Offer personol</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="Dewislen defnyddiwr" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_cy.wikipedia.org&uselang=cy"><span>Rhoi</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Arbennig:CreateAccount&returnto=Ll%C3%AAn+Natur" title="Rydym yn argymell eich bod yn creu cyfri ac yn menwgofnodi. Fodd bynnag, dydy hyn ddim yn orfodol"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Creu cyfrif</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Arbennig:UserLogin&returnto=Ll%C3%AAn+Natur" title="Fe'ch anogir i fewngofnodi, er nad oes rhaid gwneud. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Mewngofnodi</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Tudalennau ar gyfer golygyddion allgofnodedig <a href="/wiki/Cymorth:Cyflwyniad" aria-label="Dysgu mwy am olygu"><span>dysgu mwy</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Arbennig:MyContributions" title="Rhestr golygiadau o'r cyfeiriad IP hwn [y]" accesskey="y"><span>Cyfraniadau</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Arbennig:MyTalk" title="Sgwrs ynglŷn â golygiadau o'r cyfeiriad IP hwn [n]" accesskey="n"><span>Sgwrs</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Safle"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Cynnwys" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Cynnwys</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">symud i'r bar ochr</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">cuddio</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Y dechrau</div> </a> </li> <li id="toc-Bwletin_misol_ar-lein" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Bwletin_misol_ar-lein"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Bwletin misol ar-lein</span> </div> </a> <ul id="toc-Bwletin_misol_ar-lein-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Y_Tywyddiadur" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Y_Tywyddiadur"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Y Tywyddiadur</span> </div> </a> <ul id="toc-Y_Tywyddiadur-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Cronfa_o_ddyddiaduron_personol" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Cronfa_o_ddyddiaduron_personol"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Cronfa o ddyddiaduron personol</span> </div> </a> <ul id="toc-Cronfa_o_ddyddiaduron_personol-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Y_Bywiadur" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Y_Bywiadur"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Y Bywiadur</span> </div> </a> <ul id="toc-Y_Bywiadur-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Yr_Oriel_luniau" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Yr_Oriel_luniau"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Yr Oriel luniau</span> </div> </a> <ul id="toc-Yr_Oriel_luniau-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Recordiadau_Llais" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Recordiadau_Llais"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Recordiadau Llais</span> </div> </a> <ul id="toc-Recordiadau_Llais-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Y_Llyfrgell" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Y_Llyfrgell"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Y Llyfrgell</span> </div> </a> <ul id="toc-Y_Llyfrgell-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Pytiau_Fideo" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Pytiau_Fideo"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>Pytiau Fideo</span> </div> </a> <ul id="toc-Pytiau_Fideo-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Mapiau" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Mapiau"> <div class="vector-toc-text"> <span class="vector-toc-numb">9</span> <span>Mapiau</span> </div> </a> <ul id="toc-Mapiau-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Cymuned_Llên_Natur" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Cymuned_Llên_Natur"> <div class="vector-toc-text"> <span class="vector-toc-numb">10</span> <span>Cymuned Llên Natur</span> </div> </a> <ul id="toc-Cymuned_Llên_Natur-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Cwmni_Pendraw" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Cwmni_Pendraw"> <div class="vector-toc-text"> <span class="vector-toc-numb">11</span> <span>Cwmni Pendraw</span> </div> </a> <ul id="toc-Cwmni_Pendraw-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Llygaid_Bach_Llên_Natur" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Llygaid_Bach_Llên_Natur"> <div class="vector-toc-text"> <span class="vector-toc-numb">12</span> <span>Llygaid Bach Llên Natur</span> </div> </a> <ul id="toc-Llygaid_Bach_Llên_Natur-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-app_AM" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#app_AM"> <div class="vector-toc-text"> <span class="vector-toc-numb">13</span> <span>app AM</span> </div> </a> <ul id="toc-app_AM-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Cysylltu_ar-lein" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Cysylltu_ar-lein"> <div class="vector-toc-text"> <span class="vector-toc-numb">14</span> <span>Cysylltu ar-lein</span> </div> </a> <ul id="toc-Cysylltu_ar-lein-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Cyfeiriadau" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Cyfeiriadau"> <div class="vector-toc-text"> <span class="vector-toc-numb">15</span> <span>Cyfeiriadau</span> </div> </a> <ul id="toc-Cyfeiriadau-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Dolen_allanol" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Dolen_allanol"> <div class="vector-toc-text"> <span class="vector-toc-numb">16</span> <span>Dolen allanol</span> </div> </a> <ul id="toc-Dolen_allanol-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Gweler_hefyd" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Gweler_hefyd"> <div class="vector-toc-text"> <span class="vector-toc-numb">17</span> <span>Gweler hefyd</span> </div> </a> <ul id="toc-Gweler_hefyd-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Cynnwys" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toglo'r tabl cynnwys" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toglo'r tabl cynnwys</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Llên Natur</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Mae'r erthygl hon ar gael yn yr iaith hon yn unig. Ychwanegwch yr erthygl mewn ieithoedd eraill" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-0" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">Ychwanegu ieithoedd</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> <div class="after-portlet after-portlet-lang"><span class="uls-after-portlet-link"></span><span class="wb-langlinks-add wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q13129802#sitelinks-wikipedia" title="Ychwanegu dolenni rhyngwici" class="wbc-editpage">Ychwanegu dolenni</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Parthau"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Ll%C3%AAn_Natur" title="Gweld y dudalen bwnc [c]" accesskey="c"><span>Erthygl</span></a></li><li id="ca-talk" class="new vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Sgwrs:Ll%C3%AAn_Natur&action=edit&redlink=1" rel="discussion" class="new" title="Sgwrsio am y dudalen (dim tudalen ar gael) [t]" accesskey="t"><span>Sgwrs</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Newid amrywiad iaith" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Cymraeg</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Golygon"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Ll%C3%AAn_Natur"><span>Darllen</span></a></li><li id="ca-ve-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Ll%C3%AAn_Natur&veaction=edit" title="Golygu'r dudalen hon [v]" accesskey="v"><span>Golygu</span></a></li><li id="ca-edit" class="collapsible vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Ll%C3%AAn_Natur&action=edit" title="Golygu cod ffynhonnell y dudalen hon [e]" accesskey="e"><span>Golygu cod</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Ll%C3%AAn_Natur&action=history" title="Fersiynau cynt o'r dudalen hon. [h]" accesskey="h"><span>Gweld hanes</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Offer tudalen"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Blwch offer" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Blwch offer</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Blwch offer</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">symud i'r bar ochr</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">cuddio</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Rhagor o opsiynau" > <div class="vector-menu-heading"> Gweithredoedd </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/Ll%C3%AAn_Natur"><span>Darllen</span></a></li><li id="ca-more-ve-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Ll%C3%AAn_Natur&veaction=edit" title="Golygu'r dudalen hon [v]" accesskey="v"><span>Golygu</span></a></li><li id="ca-more-edit" class="collapsible vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Ll%C3%AAn_Natur&action=edit" title="Golygu cod ffynhonnell y dudalen hon [e]" accesskey="e"><span>Golygu cod</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Ll%C3%AAn_Natur&action=history"><span>Gweld hanes</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> Cyffredinol </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Arbennig:WhatLinksHere/Ll%C3%AAn_Natur" title="Rhestr o bob tudalen sy'n cysylltu â hon [j]" accesskey="j"><span>Beth sy'n cysylltu yma</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Arbennig:RecentChangesLinked/Ll%C3%AAn_Natur" rel="nofollow" title="Newidiadau diweddar i dudalennau sydd yn cysylltu â hon [k]" accesskey="k"><span>Newidiadau perthnasol</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Arbennig:SpecialPages" title="Rhestr o'r holl dudalennau arbennig [q]" accesskey="q"><span>Tudalennau arbennig</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Ll%C3%AAn_Natur&oldid=13101550" title="Dolen barhaol i'r fersiwn hwn y dudalen hon"><span>Dolen barhaol</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Ll%C3%AAn_Natur&action=info" title="Mwy o wybodaeth am y dudalen hon"><span>Gwybodaeth am y dudalen</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Arbennig:CiteThisPage&page=Ll%C3%AAn_Natur&id=13101550&wpFormIdentifier=titleform" title="Gwybodaeth ar sut i gyfeirio at y dudalen hon"><span>Cyfeirio at y dudalen hon</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Arbennig:UrlShortener&url=https%3A%2F%2Fcy.wikipedia.org%2Fwiki%2FLl%25C3%25AAn_Natur"><span>Cael URL byr</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Arbennig:QrCode&url=https%3A%2F%2Fcy.wikipedia.org%2Fwiki%2FLl%25C3%25AAn_Natur"><span>Lawrlwytho cod QR</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Argraffu / allforio </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=Arbennig:Book&bookcmd=book_creator&referer=Ll%C3%AAn+Natur"><span>Llunio llyfr</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Arbennig:DownloadAsPdf&page=Ll%C3%AAn_Natur&action=show-download-screen"><span>Lawrlwytho fel PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Ll%C3%AAn_Natur&printable=yes" title="Cynhyrchwch fersiwn o'r dudalen yn barod at ei hargraffu [p]" accesskey="p"><span>Fersiwn argraffu</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> Mewn prosiectau eraill </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Ll%C3%AAn_Natur" hreflang="en"><span>Comin Wikimedia</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q13129802" title="Cysylltu i eitem ystorfa gysylltiedig [g]" accesskey="g"><span>Eitem Wicidata</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Offer tudalen"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Gwedd"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Gwedd</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">symud i'r bar ochr</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">cuddio</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">Oddi ar Wicipedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="cy" dir="ltr"><table class="infobox vcard" style="width:22em"><caption class="fn org">Llên Natur</caption><tbody><tr><td colspan="2" class="logo" style="text-align:center"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/Delwedd:Llen-Natur-1-transparent.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/cy/thumb/c/c4/Llen-Natur-1-transparent.png/220px-Llen-Natur-1-transparent.png" decoding="async" width="220" height="117" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/cy/thumb/c/c4/Llen-Natur-1-transparent.png/330px-Llen-Natur-1-transparent.png 1.5x, //upload.wikimedia.org/wikipedia/cy/thumb/c/c4/Llen-Natur-1-transparent.png/440px-Llen-Natur-1-transparent.png 2x" data-file-width="855" data-file-height="453" /></a></span></td></tr><tr><th scope="row" style="padding-right:0.5em;"><div style="padding:0.1em 0;line-height:1.2em;">Math</div></th><td style="line-height:1.35em;"><a href="/wiki/Cymdeithas" title="Cymdeithas">cymdeithas</a></td></tr><tr><th scope="row" style="padding-right:0.5em;">Sefydlydd</th><td style="line-height:1.35em;"><a href="/wiki/Twm_Elias" title="Twm Elias">Twm Elias</a>, <a href="/wiki/Duncan_Brown" title="Duncan Brown">Duncan Brown</a></td></tr><tr><th scope="row" style="padding-right:0.5em;">Gwefan</th><td style="line-height:1.35em;"><a rel="nofollow" class="external free" href="http://llennatur.cymru/">http://llennatur.cymru/</a> <span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q13129802?uselang=cy#P856" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr></tbody></table> <figure class="mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/Delwedd:Duncan_yn_Hacio%27r_Iaith.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e7/Duncan_yn_Hacio%27r_Iaith.jpg/350px-Duncan_yn_Hacio%27r_Iaith.jpg" decoding="async" width="350" height="262" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e7/Duncan_yn_Hacio%27r_Iaith.jpg/525px-Duncan_yn_Hacio%27r_Iaith.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e7/Duncan_yn_Hacio%27r_Iaith.jpg/700px-Duncan_yn_Hacio%27r_Iaith.jpg 2x" data-file-width="800" data-file-height="599" /></a><figcaption><a href="/wiki/Duncan_Brown" title="Duncan Brown">Duncan Brown</a>, golygydd Llên Natur yn dangos rhai o nodweddion y wefan yn ystod <a href="/wiki/Hacio%27r_Iaith" title="Hacio'r Iaith">Hacio'r Iaith</a> 2010.</figcaption></figure><p> Un o brosiectau <a href="/wiki/Cymdeithas_Edward_Llwyd" title="Cymdeithas Edward Llwyd">Cymdeithas Edward Llwyd</a> yw <b>Llên Natur <a rel="nofollow" class="external autonumber" href="https://www.llennatur.cymru">[2]</a></b>. Mae'n <a href="/wiki/Wefan" class="mw-redirect" title="Wefan">wefan</a> <a href="/wiki/Cymraeg" title="Cymraeg">Gymraeg</a> sy'n ymwneud â phopeth <a href="/wiki/Amgylchedd" title="Amgylchedd">amgylcheddol</a>, yng Nghymru a thramor, ddoe, heddiw ac yfory. Cymraeg yw iaith y prosiect, a'r wefan, ond ceir cyfraniadau mewn ieithoedd eraill gan gynnwys y <a href="/wiki/Ffrangeg" title="Ffrangeg">Ffrangeg</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> Ymhlith yr adnoddau sydd ar gael ar y wefan mae: </p><ul><li>Y Bwletin a'i holl ôl-rifynnau'r Bwletin a chyhoeddiadau eraill <a rel="nofollow" class="external autonumber" href="https://www.llennatur.cymru/cyhoeddiadau">[3]</a></li> <li>Y Tywyddiadur, sef cronoleg o 112,000 o gofnodion dyddiedig am y tywydd a chysylltiedig bethau</li> <li>Y Bywiadur (geiriadur Enwau a Thermau rhywogaethau a chymunedau llysieuol)</li> <li>Yr Oriel, sef archif o luniau</li> <li>amrywiol bytiau fideo</li> <li>recordiadau ("Llais")</li> <li>llyfrgell</li></ul> <p>a thu hwnt i'r wefan </p> <ul><li>Grwp Facebook Cymuned Llên Natur</li> <li>dolenni yn cysylltu â thudalennau Wicipedia (o'r Bywiadur <a rel="nofollow" class="external autonumber" href="https://www.llennatur.cymru/Y-Bywiadur#tegeirian">[4]</a> a thrwy ddadansoddi a chrynhoi gwybodaeth arall <a class="external autonumber" href="https://cy.wikipedia.org/wiki/Ffwlbart">[5]</a>)</li> <li>presenoldeb ers Rhagfyr 2020 fel sianel ar blatfform cyfryngau creadigol AM <a rel="nofollow" class="external autonumber" href="https://www.amam.cymru/llennatur/4216">[6]</a></li></ul> <p>Trosglwyddwyd y prif gyfrifoldeb am gasglu a rhannu gwybodaeth am Enwau Lleoedd i <a href="/wiki/Cymdeithas_Enwau_Lleoedd_Cymru" title="Cymdeithas Enwau Lleoedd Cymru">Gymdeithas Enwau Lleoedd Cymru</a> yn dilyn cynhadledd a gynhaliwyd gan Brosiect Llên Natur yn 2008 yn benodol i sefydlu cymdeithas o'r fath oherwydd amlygrwydd y bwlch. </p><p>Ymhellach i'r uchod mae'r prosiect yn defnyddio fwyfwy y platfformau cyhoeddus i rannu, casglu a chadw gwybodaeth, gan gynnwys Grwp <a href="/wiki/Facebook" title="Facebook">Facebook</a> Cymuned Llên Natur, Wicipedia, a chwnmnïau cofnodi bywyd gwyllt Cymru megis Cofnod' - Y Ganolfan Gofnodion Amgylcheddol Leol ar gyfer Gogledd Cymru <a rel="nofollow" class="external autonumber" href="https://www.cofnod.org.uk/(X(1)S(qafceqvqtqaso5lgmtkfvflm))/Home">[7]</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Bwletin_misol_ar-lein">Bwletin misol ar-lein</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ll%C3%AAn_Natur&veaction=edit&section=1" title="Golygu'r adran: Bwletin misol ar-lein" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Ll%C3%AAn_Natur&action=edit&section=1" title="Edit section's source code: Bwletin misol ar-lein"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Pwrpas y Bwletin <a rel="nofollow" class="external autonumber" href="https://www.llennatur.cymru/Cyhoeddiadau">[8]</a> yn wreiddiol oedd cyflwyno tystiolaeth amgylcheddol unigol a phersonol yn seiliedig ar brofiadau pobl unigol yn eu broydd yn yr un modd ag elfennau eraill o Brosiect Llên Natur. Ond wrth i'r Prosiect ddatblygu ar wahanol blatfformydd mae'r Bwletin ar-lein bellach yn anelu at gyflwyno gwybodaeth thematig mwy cynhwysfawr ac yn y modd yna, ychwanegu gwerth i'r wybodaeth greiddiol. Mae'r cyfraniadau thematig hyn yn rhychwantu gwybodaeth am <a href="/wiki/Natur" title="Natur">fywyd gwyllt</a>, <a href="/wiki/Ll%C3%AAn_gwerin" title="Llên gwerin">llên gwerin</a>, dywediadau, <a href="/w/index.php?title=Enwau_lleoedd&action=edit&redlink=1" class="new" title="Enwau lleoedd (dim tudalen ar gael)">enwau lleoedd</a> a materion sy'n cysylltu'r unigolyn â'i amgylchedd ehangach. </p> <div class="mw-heading mw-heading2"><h2 id="Y_Tywyddiadur">Y Tywyddiadur</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ll%C3%AAn_Natur&veaction=edit&section=2" title="Golygu'r adran: Y Tywyddiadur" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Ll%C3%AAn_Natur&action=edit&section=2" title="Edit section's source code: Y Tywyddiadur"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Cronfa o wybodaeth yw'r Tywyddiadur <a rel="nofollow" class="external autonumber" href="https://www.llennatur.cymru/Y-Tywyddiadur">[9]</a> wedi ei seilio ar dystiolaeth amgylcheddol dyddiedig, lleoliedig a chyda ffynhonnell yn perthyn i bob eitem. Mae'n cael ei phorthi gan wirfoddolwyr wrth i wybodaeth ddod i'r fei mewn llyfrgelloedd, archifdai, papurau newydd, cyfryngau cymdeithasol ac ati. Gall y dystiolaeth gynnwys sylwadau uniongyrchol mewn 'amser go iawn', dyddiaduron, cofnodion ysgol <a rel="nofollow" class="external autonumber" href="https://www.llennatur.cymru/Y-Tywyddiadur?keywords=log-ysgol&bwletinau=True&dyddiadur=falseFalse&oriel=True&recordsperpage=25&currentpage=1#angori">[10]</a> neu lythyrau <a rel="nofollow" class="external autonumber" href="https://www.llennatur.cymru/Y-Tywyddiadur?keywords=llythyr&currentpage=1&recordsperpage=25&dyddiadur=false&oriel=true&bwletinau=true#angori">[11]</a>. </p><p>Mae galluoedd chwilio'r 115,000 cofnod yn y Tywyddiadur yn caniatáu dadansoddi pob math o ddigwyddiadau sy'n ymwneud â'r tywydd a chyffelyb bynciau yn ddiweddar a thros ganrifoedd yng nghefn gwlad Cymru a thu hwnt. Mae'r adran hon yn rhyngweithiol gyda chyfle i'r defnyddiwr (y gwirfoddolwyr uchod gan fwyaf) uwchlwytho neu lawrlwytho. <a href="/wiki/Dyddiadur" title="Dyddiadur">Dyddiaduron</a> personol na welodd olau dydd ynghynt yw llawer o'r cofnodion, ac mae <a href="/wiki/Bywgraffiad" class="mw-redirect" title="Bywgraffiad">bywgraffiadau</a> nifer o'u hawduron hefyd ar gael ar y wefan.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>Prif nodwedd y gronfa hon yw'r dyddiad, mis neu'r flwyddyn penodol sydd yn sail i'r cofnodion. Fe all cofnod tywydd fod yn gofnod hanesyddol neu gyfoes, megis sylwadau heddiw'r bore gan rai sy'n fyw yn awr. Ond gellir ei ddefnyddio i gyrchu diwrnod arbennig plentyndod, neu sylw mewn dyddiadur dwy ganrif yn ôl. Efallai bod cysylltiad y sylw a'r tywydd yn ymddangosiadol wan iawn: <a href="/wiki/Tylluan_wen" title="Tylluan wen">tylluan wen</a> yn hela am dri o'r gloch y prynhawn ar ddyddiad arbennig o Chwefror; clywed y gog yn canu ddiwedd mis Mawrth; teilo cae yn barod i blannu <a href="/wiki/Taten" title="Taten">tatws</a> gefn gaeaf. Ond mae'r rhain hefyd yn berthnasol iawn i naturiaethwyr sy'n ceisio gweld patrwm a newid o fewn y tywydd yn y cyfnod byr a hir mewn byd y mae ei hinsawdd, ac felly ei dywydd, yn gyflym newid. </p> <div class="mw-heading mw-heading2"><h2 id="Cronfa_o_ddyddiaduron_personol">Cronfa o ddyddiaduron personol</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ll%C3%AAn_Natur&veaction=edit&section=3" title="Golygu'r adran: Cronfa o ddyddiaduron personol" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Ll%C3%AAn_Natur&action=edit&section=3" title="Edit section's source code: Cronfa o ddyddiaduron personol"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Gellir cyrchu hon trwy'r Tywyddiadur i ganfod cofnodion unigol (ee. <a href="/wiki/Dyddiadur_Edward_Edwards,_Tywyn,_Meirionnydd" title="Dyddiadur Edward Edwards, Tywyn, Meirionnydd">Edward Edwards</a>, Faenol Isaf, Tywyn) neu drwy Wicipedia i gael trosolwg o'r rhan hon o'r gwaith <a class="external autonumber" href="https://cy.wikipedia.org/wiki/Dyddiaduron_amgylcheddol_Cymreig?wprov=sfti1">[12]</a> a mwy o wybodaeth bywgraffiadol am y dyddiadurwyr eu hunain (ee. Bywyd a gwaith Edward Edwards <a class="external autonumber" href="https://cy.wikipedia.org/wiki/Dyddiadur_Edward_Edwards,_Tywyn,_Meirionnydd?wprov=sfti1">[13]</a>).<br /> Cynigir yn y trosolwg y syniad bod y dyddiadur angylcheddol cyffredin yn <i>genre</i> llenyddol sydd wedi ei hen esgeuluso. Mae Llên Natur yn ceisio rhoi llais i'r di-lais, a chanfod gwerth holl-fyd a holl berthnasol i'r hyn sy'n ymddangos yn blwyfol ac o'r foment yn unig. </p> <div class="mw-heading mw-heading2"><h2 id="Y_Bywiadur">Y Bywiadur</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ll%C3%AAn_Natur&veaction=edit&section=4" title="Golygu'r adran: Y Bywiadur" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Ll%C3%AAn_Natur&action=edit&section=4" title="Edit section's source code: Y Bywiadur"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Geiriadur enwau a thermau yw'r Bywiadur. Mae'n gyfrwng ar gyfer cyhoeddi termau Cymraeg am wahanol <a href="/wiki/Rhywogaethau" class="mw-redirect" title="Rhywogaethau">rywogaethau</a>;<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> a chynefinoedd ac mae <a href="/wiki/Rhestr_gwyfynod_a_glo%C3%BFnnod_byw" title="Rhestr gwyfynod a gloÿnnod byw">rhestr Wicipedia o wyfynod a gloÿnnod byw</a> er enghraifft wedi'i seilio ar y termau hyn. Oherwydd y broses drylwyr o gydweithio rhwng arbenigwyr iaith ac arbenigwyr pwnc ar Banel Enwau a Thermau Prosiect Llên Natur, caiff yr enwau, bellach, eu cyfrif yn rhai safonol.<br /> Sefydlwyd yr adran hon o'r wefan trwy gydweithio â'r adran adnoddau ieithyddol, <a href="/wiki/Prifysgol_Bangor" title="Prifysgol Bangor">Prifysgol Bangor</a>. Fe gyhoeddwyd y rhestrau yn gyntaf mewn tair cyfrol yn "Cyfres Enwau Creaduriaid a Phlanhigion" ac fe barheir i wneud hynny fel y mae'r gwaith o lunio ychwaneg o restrau yn mynd rhagddo. Rhestr ddigidol greiddiol y Bywiadur yw Porth Termau Adran Adnoddau Ieithyddol <a rel="nofollow" class="external autonumber" href="https://www.bangor.ac.uk/canolfanbedwyr/termau.php.cy">[14]</a> <a href="/wiki/Prifysgol_Bangor" title="Prifysgol Bangor">Prifysgol Bangor</a> a fe ellir defnyddio'r naill neu'r llall yn ôl cyfleustra. </p> <div class="mw-heading mw-heading2"><h2 id="Yr_Oriel_luniau">Yr Oriel luniau</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ll%C3%AAn_Natur&veaction=edit&section=5" title="Golygu'r adran: Yr Oriel luniau" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Ll%C3%AAn_Natur&action=edit&section=5" title="Edit section's source code: Yr Oriel luniau"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Yr hyn sydd yn gwneud yr Oriel <a rel="nofollow" class="external autonumber" href="https://www.llennatur.cymru/Yr-Oriel">[15]</a> yn wahanol i lawer o gasgliadau eraill o luniau yw'r capsiynau y mae'r cyfranwyr yn eu hychwanegu. Gall y capsiwn gynnwys dyddiad a lleoliad y tynnwyd y llun a hefyd esboniad o beth yw arwyddocad y llun. Cronfa o gofnodion dadlennol ydyw, yn hytrach na chasgliad o luniau hardd yn unig. Gellir chwilio ar sail gair yn y capsiwn neu ar sail categori. Cafodd yr Oriel ei ddisodli braidd yn ddiweddar gan rym grwp Cymuned Llên Natur ond mae ei 9 mil o luniau a chapsiynau yn parhau i fod yn gronfa werthfawr wrth gefn. </p> <div class="mw-heading mw-heading2"><h2 id="Recordiadau_Llais">Recordiadau Llais</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ll%C3%AAn_Natur&veaction=edit&section=6" title="Golygu'r adran: Recordiadau Llais" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Ll%C3%AAn_Natur&action=edit&section=6" title="Edit section's source code: Recordiadau Llais"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Cronfa o sgyrsiau byrion "hanes llafar" sydd yn yr adran Llais <a rel="nofollow" class="external autonumber" href="https://www.llennatur.cymru/Llais">[16]</a>. Mae'n gofnod sain o atgofion unigolion (nifer wedi marw bellach) yn eu cynefin, am eu bywyd ac am yr oes a fu, yn ôl eu profiad personol. Mae'r cyfraniadau yn ymdrin â rhyw agwedd ar fyd natur neu'r amgylchedd o fewn profiad personol y sawl sydd yn cael ei gyfweld/chyfweld. Ceir llun y person ac ychydig nodiadau am ei fywyd/bywyd, ac mae pob sgwrs yn ymdrin â rhyw hanesyn penodol. Cewch weld ar y map yr ardal y mae'r person yn ymdrin â hi (neu, mewn ambell achos, pan fydd yr ardal dan sylw ymhell i ffwrdd, cartref genedigol y person sydd yn rhoi'r cyfweliad). Mae'r recordiadau sain yn gyfres o sgyrsiau </p> <div class="mw-heading mw-heading2"><h2 id="Y_Llyfrgell">Y Llyfrgell</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ll%C3%AAn_Natur&veaction=edit&section=7" title="Golygu'r adran: Y Llyfrgell" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Ll%C3%AAn_Natur&action=edit&section=7" title="Edit section's source code: Y Llyfrgell"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Mae'r llyfrgell yn gasgliad o ysgrifau o ddiddordeb amgylcheddol a hanesyddol nad ydynt fel arfer wedi eu cyhoeddiunman arall. Mae tri phwrpas i'r Llyfrgell: </p> <ul><li>I annog ymchwil pellach trwy roi llwyfan i'r sawl sydd am ddefnyddio'r cronfeydd gwybodaeth i greu naratifau newydd gwyddonol, hanesyddol neu gelfyddydol (ee. erthyglau gwyddonol, sgriptiau drama, rhaglenni neu ffilmiau). Anogir dadansoddi a dehongli'r data i greu gwaith newydd (ee. Ffenoleg y cyhaeaf gwair, bywyd cyfnod fferm, adroddiadau ar anturiaethau).</li> <li>I gasglu erthyglau hanesyddol a chyfredol perthnasol sydd eisoes wedi eu cyhoeddi, a'u hail gyflwyno (gyda chaniatad) mewn ffordd chwiliadwy.</li> <li>I gasglu a chyflwyno dolenni i lyfrau perthnasol cyfain ar wefannau archifol megis Google Books (ee. Welsh Botanology Hugh Davies).</li></ul> <p>Collwyd rhai cyfraniadau gwreiddiol ar ôl ymyrraeth hacwyr ar fersiwn wreiddiol y wefan. </p> <div class="mw-heading mw-heading2"><h2 id="Pytiau_Fideo">Pytiau Fideo</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ll%C3%AAn_Natur&veaction=edit&section=8" title="Golygu'r adran: Pytiau Fideo" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Ll%C3%AAn_Natur&action=edit&section=8" title="Edit section's source code: Pytiau Fideo"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Archif yw hwn bellach ar ôl i rym Cymuned Llên Natur roi i aelodau yr un gwasanaeth ond yn llawer mwy effeithiol. </p> <div class="mw-heading mw-heading2"><h2 id="Mapiau">Mapiau</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ll%C3%AAn_Natur&veaction=edit&section=9" title="Golygu'r adran: Mapiau" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Ll%C3%AAn_Natur&action=edit&section=9" title="Edit section's source code: Mapiau"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Hon ydy'r adran diweddaraf i'w chael ei sefydlu ar y wefan. Pwrpas y dudalen fapiau yw cyflwyno gwybodaeth sy'n bennaf seiliedig ar LEOLIAD. Y pwrpas yw ceisio amlygu patrymau na fuasent yn amlwg heb eu rhoi ar fap. Mae mapiau aml-lefel yn caniatau dangos gwybodaeth lawn am bob cofnod heb greu dryswch ar unrhyw olygfa unigol ohono. </p><p>Dyma'r mapiau sydd ar gael (Rhagfyr 2020) o dan gyfres o themau: mae pump thema gwahanol ar gael ar hyn o bryd... </p><p>● Thema arsylwi rhywogaethau: map rhyngweithiol cofnodion Gwalchwyfyn y Taglys ● Thema meddyginiaethau gwerin: un map hyd yma (y defnydd o ddanadl poethion yn seiliedig ar astudiaeth Ann Elizabeth Williams) ● Thema enwau lleoedd: dosbarthiad pedwar enw ar y LLWYNOG yng Nghronfa Ddata Enwau Lleoedd Melville Richards ● Thema Daeareg: dosbarthiad graddfeydd o gryndod Daeargryn 1984 yn ôl cof llygad-dystion ● Thema Adar: dosbarthiad graddfeydd o amlder clywed y gôg adeg Cau Mawr Cofid 2020 </p> <div class="mw-heading mw-heading2"><h2 id="Cymuned_Llên_Natur"><span id="Cymuned_Ll.C3.AAn_Natur"></span>Cymuned Llên Natur</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ll%C3%AAn_Natur&veaction=edit&section=10" title="Golygu'r adran: Cymuned Llên Natur" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Ll%C3%AAn_Natur&action=edit&section=10" title="Edit section's source code: Cymuned Llên Natur"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Grwp Facebook yw Cymuned Llên Natur <a rel="nofollow" class="external autonumber" href="https://www.facebook.com/groups/CymunedLlenNatur">[17]</a>. Mae'n derbyn mae'n debyg 80% o'r traffig sy'n cyrraedd Prosiect Llên Natur ar y ffurf mwyaf 'amrwd' sy'n nodweddiadol o'r cyfryngau cymdeithasol. O'i brosesu mae'n porthi holl adrannau eraill y cyfrwng ac yn ei dro yn derbyn gwybodaeth ohonynt wedi ei brosesu i gyfoethogi'r sylwadau sy'n cyrraedd o ddydd i ddydd. Mae 3,600 aelod o'r Grwp (Rhagfyr 2020). </p> <div class="mw-heading mw-heading2"><h2 id="Cwmni_Pendraw">Cwmni Pendraw</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ll%C3%AAn_Natur&veaction=edit&section=11" title="Golygu'r adran: Cwmni Pendraw" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Ll%C3%AAn_Natur&action=edit&section=11" title="Edit section's source code: Cwmni Pendraw"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Sefydlwyd cwmni theatrig o'r enw Cwmni Pendraw <a rel="nofollow" class="external autonumber" href="https://cwmnipendraw.com/">[18]</a> gyda chysylltiad llac â Phrosiect Llên Natur. Pwrpas y cwmni yw cyflwyno negeseuon amgylcheddol mewn ffordd ddramatig. </p> <div class="mw-heading mw-heading2"><h2 id="Llygaid_Bach_Llên_Natur"><span id="Llygaid_Bach_Ll.C3.AAn_Natur"></span>Llygaid Bach Llên Natur</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ll%C3%AAn_Natur&veaction=edit&section=12" title="Golygu'r adran: Llygaid Bach Llên Natur" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Ll%C3%AAn_Natur&action=edit&section=12" title="Edit section's source code: Llygaid Bach Llên Natur"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Yn 2020 sefydlwyd Grwp FB i blant (o bob oed!) a theuluoedd. Fe'i modelwyd ar yr hen lyfrau I-Spy. Cyhoeddir posteri "adnabod" sy'n cynnwys sain adar. Fe'u gwelir fel Posteri ar dudalennau cyhoeddiadau gwefan Llên Natur <a rel="nofollow" class="external autonumber" href="https://www.llennatur.cymru/Cyhoeddiadau">[19]</a>. Anogir plant i adnabod y rhywogaethau yn y posteri, neu i'w gweld yn y maes. Cânt eu gwobrwyo am adnabod yn gywir gyda phwyntiau. Mae bathodyn deniadol i'w cael o ennill digon o bwyntiau. </p> <div class="mw-heading mw-heading2"><h2 id="app_AM">app AM</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ll%C3%AAn_Natur&veaction=edit&section=13" title="Golygu'r adran: app AM" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Ll%C3%AAn_Natur&action=edit&section=13" title="Edit section's source code: app AM"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Hwn yw'r platfform diweddaraf i Llên Natur gael presenoldeb arno. Mae'n gweithio o ap. o'r un enw <a rel="nofollow" class="external autonumber" href="https://www.amam.cymru">[20]</a> ac mae Llên Natur yn ymddangos ar eu hadran Geiriau (un o bedair adran ar yr ap.) neu drwy chwiliad. Ar hyn o bryd 'ffenestr siop' ydyw i gyhoeddiadau Llên Natur ond rydym yn gwyntyllu posibiliadau eraill. </p> <div class="mw-heading mw-heading2"><h2 id="Cysylltu_ar-lein">Cysylltu ar-lein</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ll%C3%AAn_Natur&veaction=edit&section=14" title="Golygu'r adran: Cysylltu ar-lein" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Ll%C3%AAn_Natur&action=edit&section=14" title="Edit section's source code: Cysylltu ar-lein"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Gellir cysylltu â'r prosiect trwy ffurflen "cysylltu" ar y wefan (www.llennatur@yahoo.com), trwy gyfrannu data neu luniau i'r gwahanol gronfeydd, neu trwy <a href="/wiki/Facebook" title="Facebook">Facebook</a>. Cyhoeddir crynodeb papur o gynnwys y Bwletin yn chwe misol i'w werthu yn y siopau, a chynhelir cynhadledd flynyddol ar thema arbennig yn flynyddol. </p> <div class="mw-heading mw-heading2"><h2 id="Cyfeiriadau">Cyfeiriadau</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ll%C3%AAn_Natur&veaction=edit&section=15" title="Golygu'r adran: Cyfeiriadau" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Ll%C3%AAn_Natur&action=edit&section=15" title="Edit section's source code: Cyfeiriadau"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="reflist" style="list-style-type: decimal;"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><cite class="citation web"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20040610130433/http://www.cymdeithasedwardllwyd.org.uk/">"Gwefan Cymdeithas Edward Llwyd; adalwyd 05/12/2012"</a>. Archifwyd o'r <a rel="nofollow" class="external text" href="http://www.cymdeithasedwardllwyd.org.uk/">gwreiddiol</a> ar 2004-06-10<span class="reference-accessdate">. Cyrchwyd <span class="nowrap">2012-12-05</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Gwefan+Cymdeithas+Edward+Llwyd%3B+adalwyd+05%2F12%2F2012.&rft_id=http%3A%2F%2Fwww.cymdeithasedwardllwyd.org.uk%2F&rfr_id=info%3Asid%2Fcy.wikipedia.org%3ALl%C3%AAn+Natur" class="Z3988"></span><style data-mw-deduplicate="TemplateStyles:r8312344">.mw-parser-output cite.citation{font-style:inherit}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-maint{display:none;color:#33aa33;margin-left:0.3em}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}</style></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.llennatur.cymru/Y-Tywyddiadur">llennatur.cymru;</a> adalwyd 26 Awst 2017.</span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external autonumber" href="http://www.llennatur.cymru/Bywiadur">[1]</a>; adalwyd 06/12/2012</span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="Dolen_allanol">Dolen allanol</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ll%C3%AAn_Natur&veaction=edit&section=16" title="Golygu'r adran: Dolen allanol" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Ll%C3%AAn_Natur&action=edit&section=16" title="Edit section's source code: Dolen allanol"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external free" href="http://www.llennatur.cymru/">http://www.llennatur.cymru/</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Gweler_hefyd">Gweler hefyd</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ll%C3%AAn_Natur&veaction=edit&section=17" title="Golygu'r adran: Gweler hefyd" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Ll%C3%AAn_Natur&action=edit&section=17" title="Edit section's source code: Gweler hefyd"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Cymdeithas_Edward_Llwyd" title="Cymdeithas Edward Llwyd">Cymdeithas Edward Llwyd</a></li></ul>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; 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