|Scientific Name:||Halodule emarginata|
|Taxonomic Notes:||The taxonomy of this species is questionable and it may eventually be found as conspecific with Halodule wrightii. Its taxonomic status is based on leaf-tip morphology which is highly variable (Larkum et al. 2006).|
|Red List Category & Criteria:||Data Deficient ver 3.1|
|Assessor/s:||Short, F.T., Carruthers, T.J.R., van Tussenbroek, B. & Zieman, J.|
|Reviewer/s:||Livingstone, S., Harwell, H. & Carpenter, K.E.|
Halodule emarginata is endemic to Brazil. Its current taxonomic status is based on leaf-tip morphology which is highly variable. This species is listed as Data Deficient. More research is needed on this species taxonomy, population status, and potential threats, especially as it has disappeared from a known site near Rio de Janeiro.
|Range Description:||Halodule emarginata is endemic to Brazil where it ranges from Rio de Janiero to Baía de Todos os Santos.|
|FAO Marine Fishing Areas:||
Atlantic – southwest
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||There is little population information available for Halodule emarginata. One of the known sites for this species has disappeared from Rio de Janiero (F. Short pers. comm. 2008).|
|Habitat and Ecology:||Halodule emarginata is found in sheltered shores, in fine-sediment substrate and salinities around 35 ppt (de Oliveira et al. 1983). It is a perennial species that produces flowers (Zieman 1982, UNESCO 1998, Hemminga and Duarte 2000, Green and Short 2003, Larkum et al. 2006).|
|Major Threat(s):||Specific threats to Halodule emarginata are unknown. Localized coastal development is most likely a threat.|
|Conservation Actions:||Conservation measures for Halodule emarginata are unknown. More research is needed on this species taxonomy, population status, and potential threats.|
de Oliveira, F.E.C., Pirani, J.R. and Giulietti, A.M. 1983. The Brazilian seagrasses. Aquatic Biology 16(3): 251-267.
Green, E.P. and Short, F.T. 2003. World Atlas of Seagrasses. University of California Press, Berkeley.
Hemminga, M.A. and Duarte, C.M. 2000. Seagrass Ecology. Cambridge University Press, Cambridge.
IUCN. 2010. IUCN Red List of Threatened Species (ver. 2010.3). Available at: http://www.iucnredlist.org. (Accessed: 2 September 2010).
Larkum, A.W.D., Orth, R.J. and Duarte, C.M. (eds). 2006. Seagrasses: Biology, Ecology and Conservation. Springer, Dordrecht.
Short, F.T., Fernandez, E., Vernon, A. and Gaeckle, J.L. 2006. Occurrence of Halophila baillonii meadows in Belize, Central America. Aquatic Botany 85: 249-251.
UNESCO. 1998. CARICOMP-Caribbean coral reef, seagrass and mangrove sites. Coastal region and small island papers. UNESCO, Paris.
Zieman, J.C. 1982. The ecology of the seagrasses of South Florida: a community profile. US Fish and Wildlife Service Biological Services Program FWS/OBS-82/5: 150.
|Citation:||Short, F.T., Carruthers, T.J.R., van Tussenbroek, B. & Zieman, J. 2010. Halodule emarginata. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. <www.iucnredlist.org>. Downloaded on 08 March 2014.|
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