Publication Date:
2023-07-09
Description:
An analysis was made of composition and content of nutrients, salts, particulate and dissolved organic matter, and various plankton groups in a series of samples collected by a 140-liter sampling bottle to depth up to 150 m at 4 equatorial stations between 97° and 154°W. Large and small phytoplankton, bacteria (aggregated and dispersed), heterotrophic flagellates, infusorians, radiolarians, foraminifers, fine filter-feeders, small and large, mostly herbivorous copepods, cyclopoids, predatory calanoids, and other predators were investigated separately. Trophic relations between these elements are established from personal and published data, and rate of their metabolism and some other physiological parameters are determined. Such functional characteristics as extent of satisfaction of food requirements of organisms belonging to various trophic groups, intensity of trophic relations, balance between production and consumption by individual elements of the community, ecological efficiency, and net and specific production of the groups distinguished, of individual trophic levels, of total zooplankton, and of the community as a whole are calculated. Variations of these characteristics along the equator with decreasing upwelling intensity are examined and their possible causes and mechanisms are discussed.
Keywords:
AK17-1454; AK17-1456; AK17-1458; AK17-1461; Archive of Ocean Data; ARCOD; Bacteria, biomass per area, as energy; Calanoides, biomass per area, as energy; Calculated; Carnivorous animals, biomass per area, as energy; Copepoda, biomass per area, as energy; Cyclopoida, biomass per area, as energy; Date/Time of event; Depth, bottom/max; Depth, top/min; DEPTH, water; Equatorial Pacific; Event label; Filter feeder, biomass per area, as energy; Flagellates, biomass per area, as energy; Infusorians, biomass per area, as energy; Latitude of event; Longitude of event; Nonpredatory animals, biomass per area, as energy; Phytoplankton, biomass per area, as energy; PLA; Plankton, biomass per area, as energy; Plankton net; Predators, biomass per area, as energy; Protozoa; Protozoa, biomass per area, as energy; Radiolarians, biomass per area, as energy; Zooplankton, biomass per area, as energy
Type:
Dataset
Format:
text/tab-separated-values, 84 data points
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