Role of nutrient recycling in upwelling ecosystems

Conference · Mon Jan 01 00:00:00 EST 1979

OSTI ID:5505495

Whitledge, T E

The regeneration of nitrogen is an important process that increases the efficiency of the upwelling ecosystem by enlarging their spatial scales. Ammonium regeneration was considered to contribute 42 to 72 percent of phytoplankton nitrogen requirements in the northwest Africa, Peru, and Baja California upwelling systems. Zooplankton are responsible for the largest portion of regenerated nitrogen; however, fish and benthic sediments may be nearly as large. Comparisons of the importance of ammonium regeneration in upwelling areas with coastal and open ocean regions indicate that the percentage contributions are similar. Future nutrient regeneration studies are needed to assess the recycling of benthic sediments, microzooplankton, gelatinous zooplankton, demersal fish, bacterioplankton, and mollusks.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• Sponsoring Organization: USDOE
• DOE Contract Number: EY-76-C-02-0016
• OSTI ID: 5505495
• Report Number(s): BNL-27333; CONF-7910131-1
• Resource Relation: Conference: Conference on the bioproductivity of upwelling ecosystems, Moscow, USSR, 9 Oct 1979
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AQUATIC ECOSYSTEMS
UPWELLING
NUTRIENTS
RECYCLING
BIOLOGICAL EFFECTS
AMMONIA
AMMONIUM COMPOUNDS
AUFWUCHS
COASTAL REGIONS
FISHES
GRAPHS
NITROGEN
OXYGEN
PHYTOPLANKTON
SEAS
SEDIMENTS
TABLES
UREA
ZOOPLANKTON
AMIDES
ANIMALS
AQUATIC ORGANISMS
CARBONIC ACID DERIVATIVES
CRYOGENIC FLUIDS
DATA FORMS
ECOSYSTEMS
ELEMENTS
FLUIDS
HYDRIDES
HYDROGEN COMPOUNDS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PLANKTON
SURFACE WATERS
VERTEBRATES
520100* - Environment
Aquatic- Basic Studies- (-1989)
560300 - Chemicals Metabolism & Toxicology