Southeast US Estuarine Species Distribution and Abundance by Life Stage

NOAA's Estuarine Living Marine Resources (ELMR) Project Southeast component provides a standardized database for 40 ecologically and economically important fish and invertebrate species across 20 estuaries from North Carolina to Florida. For each species, relative abundance is ranked on a five-tier scale by month for up to five life stages within one to three salinity zones per estuary. This original regional dataset was created by NOAA NCEI, with the core study published in 1991.

Use Cases

• Analyzing seasonal abundance patterns for specific life stages (e.g., juvenile, spawning) using the monthly rank data.
• Modeling species habitat preferences by correlating distribution ranks with estuary salinity zones (Tidal Fresh, Mixing, Seawater).
• Comparing the ecological or commercial importance of 40 selected species across 20 southeastern US estuaries.
• Assessing long-term changes in estuarine communities by using this 1991 dataset as a historical baseline.

Strengths

• Provides a structured, multi-dimensional view of species presence covering 40 species, 20 estuaries, up to 5 life stages, and 3 salinity zones.
• Uses a consistent five-tier ranking system for relative abundance, allowing for standardized cross-species and cross-estuary comparisons.
• Cross-platform presence on NASA EarthData and Data.gov signals recognized importance and accessibility for the scientific community.

Limitations

• The dataset's temporal coverage is unclear; one source lists a last update of 2026-04 -01 (likely a metadata error), while another cites 1991-09-30 as the original study date.
• Specific column names and the total row count are not provided by any source, limiting understanding of the exact data structure.
• The license and precise data collection methodology are not specified in the provided metadata.

Provenance

Source

NOAA National Centers for Environmental Information (NCEI).

Collection Method

Species distribution and relative abundance ranked by experts on a five-tier scale by month for each life stage within defined estuary salinity zones, as detailed in Nelson et al. (1991).

Time Range

1991

Freshness

1991-09-30

Geography

20 estuaries in coastal North Carolina, South Carolina, Georgia, and the east coast of Florida.