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Terrain variables extracted from bathymetry were used in combination with stable isotope datasets to construct geospatially-explicit isoscapes that predicted variation in carbon and nitrogen isotopes across the canyon-slope seascape, providing insights into the distribution and flow of energy resources, relevant to understanding whole community function.
Categories: Data;
Tags: Aquatic Biology,
Atlantic Ocean,
Baltimore Canyon,
Ecology,
Norfolk Canyon, All tags...
USGS Science Data Catalog (SDC),
Virginia,
biota,
deep sea,
environment,
food web,
isoscapes,
oceans,
stable isotope analysis,
submarine canyon, Fewer tags
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The primary objective of this study was to assess deepsea food web structure and trophic niches in Baltimore and Norfolk canyons, the adjacent slopes, and chemosynthetic seeps along the mid-Atlantic margin using stable isotope analyses (SIA) and isotope niche width analysis. We hypothesized that the isotopic compositions of canyon versus slope fauna would be distinct, given differences in the physics and chemistry of the canyons and slopes and resulting quality and quantity of the organic matter available to the benthos. These differences should be evident across taxa and among and within feeding groups. We also used SIA to estimate trophic positions of invertebrates and fishes and to examine changes in trophic...
Categories: Data;
Tags: Atlantic ocean,
Baltimore canyon,
USGS Science Data Catalog (SDC),
biota,
ecological competition, All tags...
ecology,
environment,
food web,
oceans,
stable isotope analysis,
submarine canyon, Fewer tags
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Data on the abundance, density, habitat placement and behaviors of Eumunida picta observed from analyzed videos recorded during submersible dives from 2000-2009 in the western Atlantic off the southern U.S. coastline.
Categories: Data;
Tags: Aquatic Biology,
Atlantic Ocean,
Ecology,
Eumunida picta,
Florida, All tags...
Georgia,
Lophelia pertusa,
North Carolina,
South Carolina,
USGS Science Data Catalog (SDC),
boundaries,
cold-water corals,
feeding behavior,
squat lobster,
video analysis, Fewer tags
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