131,369 individual organisms were recorded across 322 benthic samples collected from the Brazilian continental shelf and slope. The REVIZEE Program's South Score/Benthos sub-program conducted this survey to assess biodiversity and sustainable resource potential from December 1997 to April 1998. Data includes 28 higher taxa, with Bryozoa being the most abundant group at 30,501 records.
Use Cases
- Modeling bathymetric distribution of higher taxa like Polychaeta or Ophiuroidea against substrate type and depth (60-810m).
- Analyzing abundance and frequency of groups like Bryozoa, Crustacea, and Bivalvia across 322 sampling stations.
- Identifying associations between organism abundance and environmental factors such as sandy/muddy substrata with low calcium carbonate.
- Studying taxonomic composition and richness from the 1,012 identified taxa, including new species occurrences.
Strengths
- Large-scale sampling with 322 benthic samples from van Veen, Box-corer, and dredge collections.
- Comprehensive taxonomic coverage with 131,369 individuals recorded across 28 higher invertebrate taxa.
- Detailed abundance data for major groups, e.g., 30,501 Bryozoa records and 22,412 Polychaeta individuals.
Limitations
- Temporal staleness; data is from a single cruise in 1997-1998, limiting analysis of temporal trends.
- Geographic bias restricted to the southeastern and southern Brazilian exclusive economic zone.
- Sample data and specific column structures (e.g., precise coordinates, measurement units) are unavailable.
Provenance
- Source
- REVIZEE Program, South Score/Benthos sub-program, collected via the Oceanographic Vessel Prof. W. Besnard (IO-USP).
- Collection Method
- Benthic sampling using van Veen and Box-corer samplers and rectangular dredge; organisms also scrapped from hard substrates.
- Time Range
- December 13, 1997 to April 20, –1998
- Freshness
- null
- Geography
- Continental shelf and slope of southeastern and southern Brazil, from Cabo de São Tomé, RJ to Arroio Chuí, RS (60-810 m depth).