|Scientific Name:||Cymodocea rotundata|
|Species Authority:||Asch. & Schweinf.|
|Taxonomic Notes:||Cymodocea rotundata may include the species Cymodocea angustata|
|Red List Category & Criteria:||Least Concern ver 3.1|
|Assessor(s):||Short, F.T. & Waycott, M.|
|Reviewer(s):||Carpenter, K.E. & Livingstone, S.|
This species is widespread and relatively common within its range. Although there are a number of localized threats that are contributing to seagrass decline, there is no current indication of widespread population reduction for this species. It is listed as Least Concern.
Cymodocea rotundata has a wide Indo-Pacific distribution. In the Pacific, it is found from southern Japan, extending to Hainan, China, the Philippines, Malaysia, Indonesia, the southern tip of Vietnam, and the Gulf of Thailand across insular Southeast Asia to New Caledonia, northern Australia and across Micronesia.
In the Indian Ocean, it is found from Roebuck Bay in northwest Australia extending across the Timor Sea, the south coast of Indonesia, and throughout the Andaman Sea. In India, it is found from the Coromandel Coast to the Malabar Coast and in the Lakshadweep Islands; also in the Maldive Islands. It ranges from the Red Sea south to the east coast of South Africa to Madagascar and the islands of the western Indian Ocean.
Native:Australia; China; Egypt; India; Indonesia; Japan; Kenya; Madagascar; Malaysia; Marshall Islands; Mayotte; Micronesia, Federated States of ; Mozambique; New Caledonia; Palau; Papua New Guinea; Philippines; Saudi Arabia; Seychelles; Singapore; Tanzania, United Republic of; Thailand; United States Minor Outlying Islands; Vanuatu; Yemen
|FAO Marine Fishing Areas:||
Indian Ocean – eastern; Indian Ocean – western; Pacific – northwest; Pacific – western central
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||Cymodocea rotundata is common and widespread. The global population appears to be stable.|
|Habitat and Ecology:||
Cymodocea rotundata often occurs in clear water, and often in the high intertidal zone. This species is resilient to marginal conditions. Like many intertidal species, this species' morphology can vary widely, and for this reason it can sometimes be confused with other species (i.e., with narrow leaf Thalassia hemprichii or wide Halodule uninervis). This species does not like full exposure at low tide (dry conditions).
In the Andaman Sea, it occupies the lower littoral zone on muddy sand areas or sandy bottom mixed with dead coral fragments. Cymodocea rotundata can survive a moderate level of disturbance. It is a pioneer species in Indonesia (along with Halophila ovalis and Halodule pinifolia) which occurs in the lower intertidal and shallow subtidal zones, growing best in well-sheltered sandy (not muddy), stable and low-relief sediments (Green and Short 2003).
|Major Threat(s):||Cymodocea rotundata often forms a fringing bed, and therefore is present in areas exposed to impacts from coastal development and high anthropogenic activity. There are no major threats and threats tend to be localized.|
|Conservation Actions:||Cymodocea rotundata is present in some marine protected areas within its range. It does not have any specific conservation measures currently in place, though site and habitat protection and managements strategies are needed. More research is needed on this species on recruitment and reproduction, and taxonomy.|
|Citation:||Short, F.T. & Waycott, M. 2010. Cymodocea rotundata. The IUCN Red List of Threatened Species. Version 2015.2. <www.iucnredlist.org>. Downloaded on 31 July 2015.|
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