Amaranthus brownii

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
PLANTAE	TRACHEOPHYTA	MAGNOLIOPSIDA	CARYOPHYLLALES	AMARANTHACEAE

Scientific Name:

Amaranthus brownii

Species Authority:

Christoph. & Caum

Common Name/s:

English

–

Brown's Pigweed

Assessment Information [top]

Red List Category & Criteria:	Critically Endangered D ver 3.1
Year Published:	2003
Assessor/s:	Bruegmann, M.M. & Caraway, V.
Reviewer/s:	Maunder, M. (Plant Conservation Committee) & Dickinson, T. (Red List Programme Office)
Contributor/s:
Justification: Endemic to the island of Nihoa in the Northwestern Hawaiian Islands. The island is part of the Hawaiian Islands National Wildlife Refuge, and has an area of only 0.65 km². The total population size is estimated to be fewer than 50 mature individuals.

Geographic Range [top]

Range Description:	Only found on island of Nihoa, the population of A. brownii consists of 40 mature individuals.
Countries:	Native: United States (Hawaiian Is.)
Range Map:	Click here to open the map viewer and explore range.

Population [top]

Population Trend:	Unknown

Population Trend:

Unknown

Habitat and Ecology [top]

Habitat and Ecology:	An annual herb of dry shrublands on rocky outcrops.
Systems:	Terrestrial

Threats [top]

Major Threat(s):	This species may have experienced some decline due to disturbances resulting from Polynesian settlement of the island. Current threats include invasive alien weeds and landslides. The dry vegetation of Nihoa is also susceptible to accidentally set fires.

Major Threat(s):

This species may have experienced some decline due to disturbances resulting from Polynesian settlement of the island. Current threats include invasive alien weeds and landslides. The dry vegetation of Nihoa is also susceptible to accidentally set fires.

Conservation Actions [top]

Conservation Actions:	Federally and state listed as endangered. Occurs within U.S. Fish and Wildlife Service National Wildlife Refuge.

Conservation Actions:

Federally and state listed as endangered. Occurs within U.S. Fish and Wildlife Service National Wildlife Refuge.

Citation:	Bruegmann, M.M. & Caraway, V. 2003. Amaranthus brownii. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 19 May 2013.
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