Amphiroa crustiformis

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
PLANTAE	RHODOPHYTA	FLORIDEOPHYCEAE	CORALLINALES	CORALLINACEAE

Scientific Name:	Amphiroa crustiformis
Species Authority:	E.Y.Dawson

Assessment Information [top]

Red List Category & Criteria:	Data Deficient ver 3.1
Year Published:	2007
Assessor/s:	Miller, K.A., Garske, L. & Edgar, G.
Reviewer/s:	Stuart, S.N. & Carpenter, K.E. (Global Marine Species Assessment Coordinating Team)
Contributor/s:
Justification: Coralline species in the Galápagos are in urgent need of reassessment. Only known from two localities thus far. Not easily recognized except by specialists and difficult to collect. In addition, there is no information on population trends, hence it is assessed as Data Deficient.

Geographic Range [top]

Range Description:	Amphiroa crustiformis is an endemic species from the Galápagos Islands, only known from two locations: San Cristóbal (Dawson 1963), and Elizabeth Bay, Isabela (UC 2004, K.A. Miller pers. comm.).
Countries:	Native: Ecuador (Galápagos)
FAO Marine Fishing Areas:	Native: Pacific – southeast
Range Map:	Click here to open the map viewer and explore range.

Population [top]

Population:	A. crustiformis is a rare species, only known from two sites. There is no current information on population trends.
Population Trend:	Unknown

Habitat and Ecology [top]

Habitat and Ecology:	A. crustiformis has been reported to occur at shallow water, from the intertidal zone to 5 m depth on rocky substrata (Dawson 1963). The specimens collected at Elizabeth Bay were present in an urchin barren, at 3 to 5 m depth (UC 2004, K.A. Miller pers. comm.).
Systems:	Marine

Threats [top]

Major Threat(s):	Presumably El Niño and climate change. Ecosystem interactions involving these two factors appear to have caused widespread decline in algal populations because of an increase in density of grazing sea urchins and other herbivores, following overexploitation of predators along with ENSO disturbances.

Major Threat(s):

Presumably El Niño and climate change. Ecosystem interactions involving these two factors appear to have caused widespread decline in algal populations because of an increase in density of grazing sea urchins and other herbivores, following overexploitation of predators along with ENSO disturbances.

Conservation Actions [top]

Conservation Actions:	A. crustiformis is present within the Galápagos Marine Reserve (IUCN category VI); Galápagos Archipelago Particularly Sensitive Sea Area (PSSA); Galápagos Island World Heritage Site (UNESCO N (i)(ii)(iii)(iv)), and Galápagos Island Man and Biosphere Reserve (UNESCO).

Conservation Actions:

A. crustiformis is present within the Galápagos Marine Reserve (IUCN category VI); Galápagos Archipelago Particularly Sensitive Sea Area (PSSA); Galápagos Island World Heritage Site (UNESCO N (i)(ii)(iii)(iv)), and Galápagos Island Man and Biosphere Reserve (UNESCO).

Citation:	Miller, K.A., Garske, L. & Edgar, G. 2007. Amphiroa crustiformis. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 25 May 2013.
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