Zooplankton abundance in relation to state and type of intrusions onto the southeastern United States shelf during summer
The vertical distribution of zooplankton on the continental shelf of northeastern Florida was determined in and around upwelling events and related to concentrations of particulate matter. Doliolida and the cladoceran Penilia avirostris were significantly more abundant in upwelled water < 22/sup 0/C and the cyclopoid genus Oncaea more abundant at warmer temperatures. The abundance of doliolida, Oithona and Oncaea in intrusions and the thermocline was significantly higher in older than in recently upwelled waters. The vertical sequences of the abundance of zooplankton and particulate matter (2-114 ..mu..m ESD) were identical. Zooplankton maxima co-occurred primarily with maxima in phytoplankton biomass (chlorophyll a) and only partly with primary productivity. 27 references, 16 figures, 6 tables.
- Research Organization:
- Skidaway Institute of Oceanography, Savannah, GA
- DOE Contract Number:
- AS09-76EV00936; AS09-76EV00889
- OSTI ID:
- 5944880
- Journal Information:
- J. Mar. Res.; (United States), Vol. 42:4
- Country of Publication:
- United States
- Language:
- English
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Effect of summertime shelf break upwelling on nutrient flux in southeastern United States continental shelf waters
Effect of summertime shelf break upwelling on nutrient flux in southeastern United States continental shelf waters
Related Subjects
PARTICULATES
ECOLOGICAL CONCENTRATION
ZOOPLANKTON
POPULATION DENSITY
CHLOROPHYLL
CONTINENTAL SHELF
PHYTOPLANKTON
UPWELLING
AQUATIC ORGANISMS
CARBOXYLIC ACIDS
CONTINENTAL MARGIN
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PARTICLES
PHYTOCHROMES
PIGMENTS
PLANKTON
PORPHYRINS
PROTEINS
520200* - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)