The effects of dredge material disposal on marine benthic habitats of the Santa Cruz Bight, California

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Watt, S., & Greene, H. G. (2007). The effects of dredge material disposal on marine benthic habitats of the Santa Cruz Bight, California. Special Paper - Geological Association of Canada, (47), 427-437.
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TitleThe effects of dredge material disposal on marine benthic habitats of the Santa Cruz Bight, California
AuthorsS. Watt, H. Greene
AbstractIn March, 2001, the Santa Cruz Small Craft Harbor was permitted to dredge some mixed sand and mud (silt and clay) from the upper harbour onto the surf zone at Twin Lakes Beach. A monitoring program was conducted to determine if any sedimentary changes occurred in nearshore benthic habitats of the Santa Cruz Bight during the experimental dredging period. To map the spatial distribution of benthic habitats at risk, and to determine if sedimentary changes occurred due to harbour dredging, multibeam bathymetry surveys and sediment sample data were collected before, during and after the dredging. These data were analyzed and interpreted into two benthic habitat maps and compared using a new GIS mapping technique to quantify areas of sediment erosion and deposition on the Santa Cruz Bight seafloor. The integration and analyses of the data collected over the monitoring period indicates that the muddy upper harbour sediment did not significantly disturb or change the grainsize characteristics of nearshore marine benthic habitats in the Santa Cruz Bight.
JournalSpecial Paper - Geological Association of Canada
Date2007
Issue47
Start page427
End page437
ISSN00721042
Subjectsbathymetric survey, benthic environment, deposition, dredging, environmental monitoring, GIS, habitat type, marine sediment, seafloor mapping, siltation, California, North America, Santa Cruz [California], United States
NoteCited By (since 1996):1, Rocks & Cores

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