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Effects of watershed and estuarine characteristics on the abundance of submerged aquatic vegetation in Chesapeake Bay subestuaries

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dc.contributor.author Li, Xuyong en
dc.contributor.author Weller, Donald E. en
dc.contributor.author Gallegos, Charles L. en
dc.contributor.author Jordan, Thomas E. en
dc.contributor.author Kim, Hae-Cheol en
dc.date.accessioned 2012-02-21T13:49:45Z
dc.date.available 2012-02-21T13:49:45Z
dc.date.issued 2007
dc.identifier.citation Li, Xuyong, Weller, Donald E., Gallegos, Charles L., Jordan, Thomas E., and Kim, Hae-Cheol. 2007. "<a href="https://repository.si.edu/handle/10088/17938">Effects of watershed and estuarine characteristics on the abundance of submerged aquatic vegetation in Chesapeake Bay subestuaries</a>." <em>Estuaries and Coasts</em>. 30:840&ndash;854. <a href="https://doi.org/10.1007/BF02841338">https://doi.org/10.1007/BF02841338</a> en
dc.identifier.issn 1559-2723
dc.identifier.uri http://hdl.handle.net/10088/17938
dc.description.abstract Watershed land use can affect submerged aquatic vegetation (SAV) by elevating nutrient and sediment loading to estuaries. We analyzed the effects of watershed use and estuarine characteristics on the spatial variation of SAV abundance among 101 shallow subestuaries of Chesapeake Bay during 1984-2003. Areas of these subestuaries range from 0.1 to 101 km<SUP>2</SUP>, and their associated local watershed areas range from 6 to 1664 km<SUP>2</SUP>. Watershed land cover ranges from 6% to 81% forest, 1% to 64% cropland, 2% to 38% grassland, and 0.3% to 89% developed land. Landscape analyses were applied to develop a number of subestuary metrics (such as subestuary area, mouth width, elongation ratio, fractal dimension of shoreline, and the ratio of local watershed area to subestuary area) and watershed metrics (such as watershed area). Using mapped data from aerial SAV surveys, we calculated SAV coverage for each subestuary in each year during 1984-2003 as a proportion of potential SAV habitat (the area mixedagricultural &gt; agricultural &gt; developed. Change-point analyses indicated strong threshold responses of SAV abundance to point source total nitrogen and phosphorus inputs, the ratio of local watershed area to subestuary area, and septic system density in the local watershed. en
dc.relation.ispartof Estuaries and Coasts en
dc.title Effects of watershed and estuarine characteristics on the abundance of submerged aquatic vegetation in Chesapeake Bay subestuaries en
dc.type Journal Article en
dc.identifier.srbnumber 55282
dc.identifier.doi 10.1007/BF02841338
rft.jtitle Estuaries and Coasts
rft.volume 30
rft.spage 840
rft.epage 854
dc.description.SIUnit SERC en
dc.citation.spage 840
dc.citation.epage 854


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