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Hawaiian Brackish Aquatic Vegetation Group | NatureServe Biotics 2019
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Name: Hawaiian Brackish Aquatic Vegetation Group Reference: NatureServe Biotics 2019 Description: This group is composed of rare, land-locked, variously brackish pools with indirect subterranean connections to the ocean. They occur on the coasts of Hawai`i, Maui, Moloka`i, O`ahu, and Kaho`olawe with most of the pools occurring on the Big Island. Vegetation is limited and includes a variety of algae (green, red), blue-green algae, and emergent vegetation, including <i>Carex</i> spp. and <i>Sesuvium portulacastrum</i>. The fauna is most distinctive and includes many endemic and native crustaceans, including shrimps (<i>Halocaridina rubra</i>), prawns, amphipods, and isopods, and small fish, and invertebrates such as the orange-black damselfly (<i>Megalagrion xanthomelas</i>), which is a rare, anchialine pool endemic. The pools are found on relatively recent lava flows or on uplifted coral beds (limestone). Fresh surface water and groundwater mix with seawater to create different salinity levels within and among pools. Water levels in pools may fluctuate with tidal changes, although delayed depending on the hydraulic conductivity of the substrates.  Accession Code: urn:lsid:vegbank.org:commConcept:40384-{BBE7E560-E282-425E-B1D8-0200540D5C98} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 27-May-2016 to: ongoing
	status: accepted Community's Parent: Polynesian-Eastern Melanesian Saltwater Vegetation Macrogroup This Community's Level: Group This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.955785 NatureServe Explorer   Code: G820   Scientific: Hawaiian Brackish Aquatic Vegetation Group