Laguna madre: Seagrass changes continue decades after salinity reduction

Estuaries
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Abstract

Vegetation maps of the lower Laguna Madre prepared from surveys conducted in 1965–1967, 1974–1976, and 1988 document a >330 km2 decrease in cover byHalodule wrightii, an increase of almost 190 km2 in other seagrass species, and an increase of 140 km2 in bare bottom. Loss in seagrass cover is confined to deeper parts of the laguna; turbidity caused by maintenance dredging is the suspected cause. The species shifts are consistent with observed reductions in salinity maxima. Although the hydrological alterations and climatic shift responsible for moderating the salinity regime occurred between 1948 and 1965, the biological changes continue. Establishment of patches away from source meadows appears to be the process for displacing species that limits their rate of expansion into suitable habitat in this elongate embayment.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Laguna madre: Seagrass changes continue decades after salinity reduction
Series title Estuaries
DOI 10.2307/1352503
Volume 16
Issue 2
Year Published 1993
Language English
Publisher Springer
Contributing office(s) National Wetlands Research Center, Wetland and Aquatic Research Center
Description 9 p.
First page 302
Last page 310
Country United States
State Texas
Other Geospatial Laguna Madre
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