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Zostera marina meadows from the Gulf of California: conservation status

dc.contributor.author Basurto, Xavier
dc.contributor.author Lopez-Calderon, JM
dc.contributor.author Riosmena-Rodríguez, R
dc.contributor.author Torre, J
dc.contributor.author Meling, A
dc.date.accessioned 2019-06-01T15:36:30Z
dc.date.available 2019-06-01T15:36:30Z
dc.date.issued 2016-02-01
dc.identifier.issn 0960-3115
dc.identifier.issn 1572-9710
dc.identifier.uri https://hdl.handle.net/10161/18617
dc.description.abstract © 2016, Springer Science+Business Media Dordrecht. Eelgrass (Zostera marina) population estimates show a decreasing trend worldwide in the second half of the twentieth century. Mexico lacks long-term time series to determine trends for major eelgrass populations and has made no conservation efforts. Therefore, we present the first report on the historic presence of this annual coastal ecosystem in two wetlands of the Gulf of California (GC), the Infiernillo Channel (CIF, largest Z. marina population inside GC) and Concepcion Bay (BCP, the only eelgrass population along GC’s west coast), combining field surveys (1999–2010), aerial photography (2000–2010), satellite imagery (1972–2005), and published reports (1994–2007). Three parameters were used as indicators of conservation status: shoot density, seed banks, and aerial coverage. Average shoot density in the CIF (741 shoots m−2) was 3.8 times higher than in BCP (194 shoots m−2), and average seed bank density was similar in both wetlands (17,442 seeds m−2 vs. 17,000 seeds m−2). Opportunistic seagrass Ruppia maritima was observed in both wetlands, with higher abundance in summer when Z. marina disappears due to high water temperatures. Eelgrass coverage was three orders of magnitude greater in the CIF (9725 ha) than in BCP (3 ha). The striking difference between these wetlands is the lack of environmental protection for BCP and the protection of the CIF by the Seri indigenous community, which increases human pressure in the former, putting it at high risk of disappearing. Conservation of eelgrass meadows is not only necessary to preserve their ecosystem services but to insure the survival of migratory populations (Pacific brant goose, Branta bernicla), endangered species (Black turtle, Chelonia mydas), and fisheries-related species.
dc.language en
dc.publisher Springer Nature
dc.relation.ispartof Biodiversity and Conservation
dc.relation.isversionof 10.1007/s10531-016-1045-6
dc.subject Science & Technology
dc.subject Life Sciences & Biomedicine
dc.subject Biodiversity Conservation
dc.subject Ecology
dc.subject Environmental Sciences
dc.subject Biodiversity & Conservation
dc.subject Environmental Sciences & Ecology
dc.subject Seagrass meadows
dc.subject Northwest Mexico
dc.subject Thematic classification
dc.subject Landsat images
dc.subject Ecosystem services
dc.subject COASTAL ECOSYSTEMS
dc.subject EELGRASS
dc.subject BRANT
dc.subject TEMPERATURE
dc.subject POPULATIONS
dc.subject ABUNDANCE
dc.subject SALINITY
dc.subject CLIMATE
dc.subject MEXICO
dc.subject MODEL
dc.title Zostera marina meadows from the Gulf of California: conservation status
dc.type Journal article
dc.date.updated 2019-06-01T15:36:28Z
pubs.begin-page 261
pubs.end-page 273
pubs.issue 2
pubs.organisational-group Nicholas School of the Environment
pubs.organisational-group Duke
pubs.organisational-group Marine Science and Conservation
pubs.publication-status Published
pubs.volume 25


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