Production characteristics of the population of the red algaAhnfeltia tobuchiensis in Baklan Bight (Peter the Great Bay, Sea of Japan)

Production characteristics of the population of the red algaAhnfeltia tobuchiensis in Baklan... Spatial distribution and production characteristics of the population of the unattached red algaAhnfeltia tobuchiensis (Kanno and Matsubara) Mak were studied in Baklan Bight (Sea of Japan) in September 1990 and June 1991. The following environmental factors were determined: the level of photosynthetically active radiation (PAR) penetrating the water column; the water temperature; and the content of oxygen, nitrogen, phosphorus, and dissolved organic substance. the main factor limiting the net primary production (NPP) of theA. tobuchiensis population in Baklan Bight appears to be PAR intensity at the surface of the stratum. In June and September, respectively it constituted about 10% and 0.2% of the PAR on the sea surface. By means of regression analysis, the following equations were obtained to describe the relationship between NPP at the surface of the stratum and the environmental factors studied, PAR intensity being the principal variable: NPP=0.02+0.81 PAR (in June) and NPP=0.02+0.23PAR (in September). In June and September, the NPP of theA. tobuchiensis stratum amounted to 17.2 and 1.3 g/(m2 day), and the biomass to 21 and 31 thousand tons, respectively. During the eight months, its distribution changed considerably. In June and September, the daily biomass growth equaled 140.7 and 8.5 t, respectively. A 10-cm-thick layer displayed the highest production characteristics. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Marine Biology Springer Journals

Production characteristics of the population of the red algaAhnfeltia tobuchiensis in Baklan Bight (Peter the Great Bay, Sea of Japan)

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Publisher
Nauka/Interperiodica
Copyright
Copyright © 2000 by MAIK “Nauka/Interperiodica”
Subject
Life Sciences; Freshwater & Marine Ecology
ISSN
1063-0740
eISSN
1608-3377
D.O.I.
10.1007/BF02759507
Publisher site
See Article on Publisher Site

Abstract

Spatial distribution and production characteristics of the population of the unattached red algaAhnfeltia tobuchiensis (Kanno and Matsubara) Mak were studied in Baklan Bight (Sea of Japan) in September 1990 and June 1991. The following environmental factors were determined: the level of photosynthetically active radiation (PAR) penetrating the water column; the water temperature; and the content of oxygen, nitrogen, phosphorus, and dissolved organic substance. the main factor limiting the net primary production (NPP) of theA. tobuchiensis population in Baklan Bight appears to be PAR intensity at the surface of the stratum. In June and September, respectively it constituted about 10% and 0.2% of the PAR on the sea surface. By means of regression analysis, the following equations were obtained to describe the relationship between NPP at the surface of the stratum and the environmental factors studied, PAR intensity being the principal variable: NPP=0.02+0.81 PAR (in June) and NPP=0.02+0.23PAR (in September). In June and September, the NPP of theA. tobuchiensis stratum amounted to 17.2 and 1.3 g/(m2 day), and the biomass to 21 and 31 thousand tons, respectively. During the eight months, its distribution changed considerably. In June and September, the daily biomass growth equaled 140.7 and 8.5 t, respectively. A 10-cm-thick layer displayed the highest production characteristics.

Journal

Russian Journal of Marine BiologySpringer Journals

Published: Nov 18, 2007

References

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