2004 UC Proceedings Abstract
 Species-Specific Marine Habitat Maps From High-Resolution, Digital Hydrographic Data Track: Ocean, Coastal, and Marine Resources Author(s): Pat Iampietro, Rikk Kvitek, Erica Summers-Morris We used high-resolution multibeam bathymetry, together with precisely geolocated (± 5m) ROV observations of fish distribution, to produce species-specific and genus-specific habitat suitability models for eight rockfish (Sebastes) species in the Del Monte shale beds of Monterey Bay, CA., USA. A high-resolution (2m) multibeam bathymetry digital elevation model (DEM) was generated and used to produce derived habitat characteristic layers [slope, rugosity, and Topographic Position Index, (TPI)] using repeatable, non-subjective algorithmic methods. These data layers, together with the positions and counts by species from 229 rockfish observations (2,892 total fish) were then used to create predictive models of habitat suitability and fish distribution, as well as stock estimates for the study area. A second, independent fish observation data set was used to validate the models. Factors evaluated for incorporation in the models included depth, slope, rugosity, and TPI at various scales. Pat Iampietro CSUMB 100 Campus Center Seaside , CA 93955 US Phone: 831.582.4214 E-mail: pat_iampietro@csumb.edu Rikk Kvitek CSU, Monterey Bay Seafloor Mapping Lab 100 Campus Center Seaside , CA 93955 US Phone: 831.582.3529 E-mail: rikk_kvitek@csumb.edu Erica Summers-Morris CSU, Monterey bay Seafloor Mapping Lab 100 Campus Center Seaside , CA 93955 US Phone: 831.582.3075 E-mail: erica_summers@csumb.edu |
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