Accession Number:

ADA629149

Title:

Ocean Response Coastal Analysis System (ORCAS)

Descriptive Note:

Corporate Author:

NATIONAL HEALTH AND ENVIRONMENTAL RESEARCH LAB GULF BREEZE FL

Personal Author(s):

Report Date:

2002-09-30

Pagination or Media Count:

5.0

Abstract:

Phytoplankton populations and communities respond to nutrient inputs on time scales from days to weeks. This short-term variability is superimposed on the long-term seasonal, annual and interannual variability in estuarine biogeochemical cycling that together regulate food web dynamics and ecosystem responses to nutrient loadings. Quantifying this short-term variability within the context of long-term changes in phytoplankton community structure including harmful algal blooms, growth and production, relationships to physico-chemical factors, food web efficiency and ecosystem ascendancy will provide critical information to assess nutrient thresholds for hypoxia and food web shifts. One of the long-term goals of the Gulf Ecology Division is to support EPA s efforts under the Clean Water Action Plan by establishing the scientific basis developing nutrient criteria for the Nation s coastal receiving waters.

Subject Categories:

  • Biology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE