Wikispecies

首页

欢迎来到
 维基物种

任何人都可以自由编辑的物种目录。

覆盖动物、植物、真菌、细菌、古菌、原生生物以及各种其他生命形态。

我们现在已收录879,742个条目。

维基物种是自由的，因为生命属于公有领域！

您可以在Twitter上关注我们：@Wikispecies
或使用由维基媒体开发的Android应用程序。

物种分类导航

探索维基物种

与ZooKeys的合作

维基物种已经建立了与ZooKeys的合作。PhytoKeys也已于2010年11月加入合作。来自ZooKeys和PhytoKeys的物种图片将上传到维基共享资源并在维基物种中使用。

杰出作者

Mary Agnes Chase
1869–1963. Standard IPNI form: Chase

Mary Agnes Chase, née Merrill, was an American botanist who worked at the U.S. Department of Agriculture and the Smithsonian Institution. She is considered one of the world's outstanding agrostologists and is known for her work on the study of grasses, and also for her work as a suffragist. Chase was born in Iroquois County, Illinois and held no formal education beyond grammar school. That aside, she made significant contributions to the field of botany, authored over 70 scientific publications, and was conferred with an honorary doctorate in science from the University of Illinois. She specialized in the study of grasses and conducted extensive field work in North- as well as and South America. Her Smithsonian Field Books collection from 1897 to 1959 is archived in the Smithsonian Institution Archives.

In 1901, Chase became a botanical assistant at the Field Museum of Natural History under Charles Frederick Millspaugh, where her work was featured in two museum publications: Plantae Utowanae (1900) and Plantae Yucatanae (1904). Two years later, Chase joined the U.S. Department of Agriculture (USDA) as a botanical illustrator and eventually became a scientific assistant in systematic agrostology (1907), assistant botanist (1923), and associate botanist (1925), all under Albert Spear Hitchcock. Chase worked with Hitchcock for almost twenty years, collaborating closely and also publishing, for instance The North American Species of Panicum (1910).

Following Hitchcock's death in 1936, Chase succeeded him to become senior botanist in charge of systematic agrostology and custodian of the Section of Grasses, Division of Plants at the United States National Museum (USNM). Chase retired from the USDA in 1939, but continued her work as custodian of the USNM grass herbarium until her death in 1963. She was an Honorary Fellow of the Smithsonian Institution (1959) and Fellow of the Linnean Society of London (1961). Agnesia is named in her honour (a monotypic genus of herbaceous South American bamboo in the grass family).

Chase experienced discrimination based on her gender in the scientific field, for example, being excluded from expeditions to Panama in 1911 and 1912 because the expedition's benefactors feared the presence of women researchers would distract men. During World War I, Chase marched with Alice Paul and was jailed several times for her activities. In 1918, she was arrested at the Silent Sentinels rally picketing the White House; she refused bail and was held for 10 days, where she instigated a hunger-strike and was force-fed. The USDA accused her of "conduct unbecoming a government employee," but Hitchcock helped her keep her job. Chase was also an active member of the National Association for the Advancement of Colored People (NAACP).

See also: Distinguished authors of previous months.

Species of the month

Western Osprey (Sea hawk, River hawk, Fish hawk)

Pandion haliaetus

Pandion haliaetus

Some facts about this bird:

Length: 50–66 cm.

Wingspan: 127–180 cm.

Weight: 0.9–2.1 kg.

Diet: The Western Osprey is almost exclusively a piscivorous i.e. fish-eating bird of prey, but approximately 1% of their diet consists of rodents, rabbits, hares, other birds, small reptiles, frogs, salamanders, conchs, and crustaceans. Reports of Western Ospreys feeding on carrion are rare.

Life-span: The typical lifespan is 7–10 years, though rarely individuals can grow to as old as 20–25 years.

Range: The Western Osprey (with subspecies) is the second most widely distributed raptor species, after the Peregrine falcon (Falco peregrinus), and is one of only six species of land-birds with a cosmopolitan distribution. It is found in temperate and tropical regions of all continents, except Antarctica.

Habitat: This species is found near freshwater lakes and rivers, and sometimes on coastal brackish waters.

Conservation status: Classified as Least Concern (LC) on the IUCN Red List.

First described: By the Swedish naturatist Linnaeus in 1758.

See also: Species of previous months
Source: Species-2023-07

其他语言版本

Wikispecies is hosted by the non-profit Wikimedia Foundation, along with several other multilingual and free-content projects:

Retrieved from "https://species.wikimedia.org/w/index.php?title=首页&oldid=9317702"