Map_thumbnail_large_font

Halodule emarginata

Status_ne_offStatus_dd_onStatus_lc_offStatus_nt_offStatus_vu_offStatus_en_offStatus_cr_offStatus_ew_offStatus_ex_off

Taxonomy [top]

Kingdom Phylum Class Order Family
PLANTAE TRACHEOPHYTA LILIOPSIDA NAJADALES CYMODOCEACEAE

Scientific Name: Halodule emarginata
Species Authority: Hartog
Common Name(s):
English Species code: Hg
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).

Assessment Information [top]

Red List Category & Criteria: Data Deficient ver 3.1
Year Published: 2010
Date Assessed: 2007-03-21
Assessor(s): Short, F.T., Carruthers, T.J.R., van Tussenbroek, B. & Zieman, J.
Reviewer(s): Livingstone, S., Harwell, H. & Carpenter, K.E.
Justification:
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.

Geographic Range [top]

Range Description: Halodule emarginata is endemic to Brazil where it ranges from Rio de Janiero to Baía de Todos os Santos.
Countries:
Native:
Brazil
FAO Marine Fishing Areas:
Native:
Atlantic – southwest
Range Map: Click here to open the map viewer and explore range.

Population [top]

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).
Population Trend: Unknown

Habitat and Ecology [top]

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).
Systems: Marine

Threats [top]

Major Threat(s): Specific threats to Halodule emarginata are unknown. Localized coastal development is most likely a threat.

Conservation Actions [top]

Conservation Actions: Conservation measures for Halodule emarginata are unknown. More research is needed on this species taxonomy, population status, and potential threats.

Citation: Short, F.T., Carruthers, T.J.R., van Tussenbroek, B. & Zieman, J. 2010. Halodule emarginata. The IUCN Red List of Threatened Species. Version 2014.1. <www.iucnredlist.org>. Downloaded on 23 July 2014.
Disclaimer: To make use of this information, please check the <Terms of Use>.
Feedback: If you see any errors or have any questions or suggestions on what is shown on this page, please fill in the feedback form so that we can correct or extend the information provided