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Mae'n cynnwys Animalia, Plantae, Fungi, Bacteria, Archaea, Protista a phopeth byw!

Ar hyn o bryd mae gennym 829,149 o erthyglau.

Mae Wicirywogaeth yn rhydd o berchnogaeth hawlfraint, fel bywyd ei hun!
Fforio'r tacson
Feirws (dosbarthiad dal yn ansicr)

Archwiliwch Wicirywogaeth

  • Cymorth – Gwybodaeth fanwl ar sut i olygu.
  • Tacsonomeg – Gwybodaeth ar Ddosbarthiad Linnaeans.
  • Tafarn – Trafodwch y prosiect.
  • Gwnaed ac ar waith – Cyfeiriadau manwl i gwmpas y gwaith a chynlluniau a thargedi
  • FAQs – Trafodaethau a phryderon
  • Canllawiau – Argymhellion ble y medrwch uwchlwytho lluniau
  • PR Wicirywogaeth – Sut i ledaenu a 'marchnata' Wicirywogaeth i'r byd mawr crwn.

Cydweithio gyda ZooKeys

Cyhoeddwyd y byddwn yn cydweithio gyda ZooKeys. Mae PhytoKeys hefyd wedi ymuno gyda'r prosiect ers Tachwedd 2010. Mae lluniau a delweddau ZooKeys a PhytoKeys yn cael eu huwchlwytho i Gomin Wicimedia a'u defnyddio ar Wicirywogaeth.

Awduron o nod

Adriana Hoffmann Jacoby
Born 1940. Standard IPNI form: A.E.Hoffm.

As a Chilean botanist and environmentalist, Adriana Hoffmann Jacoby has authored over a dozen books on the flora of Chile and has identified and classified more than 100 new species of cacti. She was Chile's Environment Minister in 2000 and 2001. She has advocated for the sustainable management and protection of Chilean forests, leading opposition to illegal logging in her role as coordinator of Defensores del Bosque Chileno (Defenders of the Chilean Forest) since 1992.

Hoffmann was recognized by the United Nations in 1997 as one of the 25 leading environmentalists of the decade for her efforts to protect Chile's forests. In 1999 she won the National Environmental Prize in the category of Environmental Education, awarded by Comisión Nacional del Medio Ambiente (CONAMA). For her research into Chilean flora and her work in environmental education, Hoffmann received the Luis Oyarzún Award from the Austral University of Chile in 2003. She received a Fellow Award from the Cactus and Succulent Society of America in 2009.

Hoffmann has also served on the judging panel for the United Nations Environment Programme's Sasakawa Prize.

See also: Distinguished authors of previous months.

Species of the month

Christmas Island frigatebird

Fregata andrewsi

Fregata andrewsi

Some facts about this bird:

Length: 89–100 cm (35–39 in)

Wingspan: 215 cm (7.15 ft)

Weight: 1.50 kg (3.42 lb)

Diet: The Christmas Island frigatebird is a piscivorous i.e. fish-eating bird of prey. They mostly feed on fish taken in flight from the ocean's surface (mostly Flying fish, Exocoetidae), but sometimes indulge in kleptoparasitism, harassing other birds to force them to regurgitate their food.

Range: The Christmas Island frigatebird is endemic to the Christmas Island in the Indian Ocean.

Habitat: Oceans and islands. They nest in large trees of species Celtis timorensis and Terminalia catappa which may grow to 35 metres (115 feet) tall.

Conservation status: Classified as Vulnerable (VU) on the IUCN Red List. In 2003 the total adult population was estimated to be between 3,600 and 7,200 individuals. There are only a total of 4 remaining nesting colonies in the world, all on the same island.

First described: By the Australian ornithologist Gregory Macalister Mathews in 1914.

Notable fact: This species is one of the "marathon fliers" among seabirds. In 2005, the female specimen was tagged with a satellite transmitter, and scientists were able to track a non-stop flight for 26 days. The flight went 4.000 km (2.500 mi) from Christmas Island via Sumatra, Java and Borneo, then back to Christmas Island where her cub was waiting for her. The scientists found that the bird did not make any stops during this flight, but instead fed over the sea and slept while flying.

Wicirywogaeth mewn ieithoedd eraill

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