Hafan

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Wicirywogaeth

Y cyfeirlyfr digidol rhydd ac am ddim y gall bawb ei olygu.

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

Ar hyn o bryd mae gennym 592,035 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

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PhytoKeys Logo.svg

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

Common Death Adder

Acanthophis antarcticus

Acanthophis antarcticus

Some facts on this snake:

Length: 70-100 cm.

Longevity: 9 years (in captivity).

Habitat: Forests, woodlands, grasslands and heaths.

Range: Eastern and coastal southern Australia.

Diet: Small mammals, lizards and birds.

Bite speed: 13 hundredths of a second.

Conservation status: Least Concern (IUCN 3.1).

First described: George Shaw and Frederick Polydore Nodder in 1802.


Be careful not to step accidentally on a camouflaged Acanthophis antarcticus. This is one of the most venomous snakes known in the world: a bite can cause paralysis and may lead to death within 6 hours, due to respiratory failure. The Death Adder is characterized by a broad and somewhat flattened, triangular head, short stout body and a thin rat-like body ending in a curved spine. It has the habit of burying itself in sand or leaf litter, with just the head and tail exposed whilst it lies in wait for prey. On approach of a potential prey, it mimics the movements of a worm or caterpillar with the tip of the tail in a process called caudal luring. The end of the wiggling tail is easily mistaken for food by a hungry and unsuspecting victim which is instantly captivated. When the prey is within range, the snake strikes at great speed. Female death adders are viviparous; they produce large litters of live babies which number between 10 and 32 in late summer. The genus Acanthophis or "death adders" contains 7 australian species, and belongs to the family Elapidae or "Elapid snakes".

See also: Species of previous months

Wicirywogaeth mewn ieithoedd eraill

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