Zooplankton abundance in relation to state and type of intrusions onto the southeastern United States shelf during summer

Journal Article · Sun Jan 01 04:00:00 EST 1984 · J. Mar. Res.; (United States)

DOI:https://doi.org/10.1357/002224084788520819· OSTI ID:5944880

Paffenhoefer, G A; Wester, B T; Nicholas, W D

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), Journal Name: J. Mar. Res.; (United States) Vol. 42:4; ISSN JMMRA
• Country of Publication: United States
• Language: English

Related Subjects

520200* -- Environment
Aquatic-- Chemicals Monitoring &amp; Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AQUATIC ORGANISMS
CARBOXYLIC ACIDS
CHLOROPHYLL
CONTINENTAL MARGIN
CONTINENTAL SHELF
ECOLOGICAL CONCENTRATION
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PARTICLES
PARTICULATES
PHYTOCHROMES
PHYTOPLANKTON
PIGMENTS
PLANKTON
POPULATION DENSITY
PORPHYRINS
PROTEINS
UPWELLING
ZOOPLANKTON