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| Format: | Artículo científico |
| Language: | en |
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Universidad Autónoma de Baja California
2004
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| Online Access: | https://www.redalyc.org/articulo.oa?id=48030103 |
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Table of Contents:
- Use of digital multispectral videography to assess seagrass distribution in San Quintín Bay, Baja California, Mexico T. Lee Tibbitts Alexandra Morton Eduardo Carrera González Richard Kempka David H. Ward Ciencias de la Tierra Zostera marina San Quintín Bay Ruppia maritima seagrass distribution airborne digital multispectral videography Apparent threats to the spatial distribution of seagrass in San Quintín Bay prompted us to make a detailed assessment ofhabitats in the bay. Six coastal habitats and three seagrass subclasses were delineated using airborne digital multispectralvideography (DMSV). Eelgrass, Zostera marina, was the predominant seagrass and covered 40% (1949 ha) of the areal extent ofthe bay in 1999. Eelgrass grew over a wide range of tidal depths from about 3.0 m mean lower low water (MLLW) to about1.0 m MLLW, but greatest spatial extent occurred in intertidal areas 0.6 m to 1.0 m MLLW. Exposed-continuous (i.e., highdensity) eelgrass was the most abundant habitat in the bay. Widgeongrass, Ruppia maritima, was the only other seagrass presentand covered 3% (136 ha) of the areal extent of the entire bay. Widgeongrass grew in single species stands in the upper intertidal(≥ 0.4 MLLW) and intermixed with eelgrass at lower tidal depths. Overall accuracy of the six habitat classes and three subclassesin the DMSV map was relatively high at 84%. Our detailed map of San Quintín Bay can be used in future change detectionanalyses to monitor the health of seagrasses in the bay. 2004 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48030103 en http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.1A Vol.30