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Sesuvium portulacastrum - Bolboschoenus maritimus - Cyperus laevigatus Salt Marsh Group | NatureServe Biotics 2019
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Name: Sesuvium portulacastrum - Bolboschoenus maritimus - Cyperus laevigatus Salt Marsh Group Reference: NatureServe Biotics 2019 Description: Intertidal salt marshes are found throughout the coastal areas of the main Hawaiian Islands. The indigenous <i>Sesuvium portulacastrum</i> dominates sometimes with non-native species present such as <i>Batis maritima</i> and <i>Pluchea indica</i> in the marsh and with <i>Atriplex semibaccata</i> along margins. The vegetation in windward marshes is generally less than 0.25 m tall and dominated by indigenous plants, including <i>Cyperus</i> spp., <i>Eleocharis</i> spp., <i>Fimbristylis cymosa, Ipomoea pes-caprae, Paspalum vaginatum, Sesuvium portulacastrum</i>, and <i>Vigna marina</i>. Under slightly brackish conditions at mouths of large windward river valleys, it merges into ~Hawaiian Freshwater Marsh Group (G428)$$, where dominance becomes shared with <i>Schoenoplectus</i> spp., <i>Bolboschoenus maritimus</i>, and <i>Cyperus laevigatus</i>. This group is defined by salinity and tidal inundation regime and is influenced by tides daily. Salt marshes occur on silt, sand, or coralline substrates, and on the main islands in depressions and on mudflats adjacent to ponds, and lagoons. Relative salinity is dictated in part by inflows of freshwater streams and groundwater toward coastal areas. Leeward marshes are typically of higher salinity due to less freshwater influence. They occur as small patches at mouths of annual streambeds and in depressions behind beaches and rocky shorelines with a surface connection to the ocean. This group does not include anchialine pools, which are aquatic and only have a subterranean connection to the ocean.  Accession Code: urn:lsid:vegbank.org:commConcept:40157-{2697DBCF-D5AA-4191-A648-BFED167898BC} 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: West Pacific Salt Marsh Macrogroup This Community's Level: Group This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.860836 NatureServe Explorer   Code: G431   Scientific: Sesuvium portulacastrum - Bolboschoenus maritimus - Cyperus laevigatus Salt Marsh Group