Size structure of phytoplankton biomass and photosynthesis in subtropical Hawaiian waters

1983 ◽  
Vol 76 (2) ◽  
pp. 203-211 ◽  
Author(s):  
M. Takahashi ◽  
P. K. Bienfang
Keyword(s):  
Phytoplankton Biomass ◽  
Size Structure

Global patterns in phytoplankton biomass and community size structure in relation to macronutrients in the open ocean

2018 ◽  
Vol 63 (3) ◽  
pp. 1298-1312 ◽  
Author(s):  
Erik Askov Mousing ◽  
Katherine Richardson ◽  
Marianne Ellegaard
Keyword(s):  
Phytoplankton Biomass ◽  
Size Structure ◽  
Open Ocean ◽  
Community Size ◽  
Global Patterns

Phytoplankton biomass size structure and its regulation in the Southern Yellow Sea (China): Seasonal variability

2009 ◽  
Vol 29 (18) ◽  
pp. 2178-2194 ◽  
Author(s):  
Mingzhu Fu ◽  
Zongling Wang ◽  
Yan Li ◽  
Ruixiang Li ◽  
Ping Sun ◽  
...  
Keyword(s):  
Yellow Sea ◽  
Seasonal Variability ◽  
Phytoplankton Biomass ◽  
Size Structure ◽  
Southern Yellow Sea ◽  
The Southern Yellow Sea

scholarly journals Spatial and seasonal variability of fractionated phytoplankton biomass and primary production in the frontal region of the Northern Adriatic Sea

2005 ◽  
Vol 6 (1) ◽  
pp. 5 ◽  
Author(s):  
M.R. VADRUCCI ◽  
G. CATALANO ◽  
A. BASSET
Keyword(s):  
Primary Production ◽  
Phytoplankton Biomass ◽  
Adriatic Sea ◽  
Size Structure ◽  
Nutrient Concentrations ◽  
Northern Adriatic Sea ◽  
Northern Adriatic ◽  
Frontal System ◽  
Dissolved Phosphorus ◽  
Point Total

Spatial and seasonal patterns of variation of fractionated phytoplankton biomass and primary production and their relationships with nutrient concentrations were analyzed along an inshore - offshore gradient and in relation to the presence of a frontal system in the Northern Adriatic Sea. Sampling was carried out in winter and summer during four oceanographic cruises (June 1996 and 1997, February 1997 and 1998) as part of the PRISMA II project. Water samples for determining nutrient concentrations, phytoplankton biomass (as Chla) and primary production (as 14 C assimilation) were collected at five optical depths. Sampling stations were located along 2 or 4 parallel transects arranged perpendicularly to the shoreline and the frontal system. The transects were located at such a distance from the coast that the frontal system crossed them at their halfway point. Total dissolved nitrogen (TDN) and total dissolved phosphorus concentrations (TDP) were 12.41 ± 3 .95 mM and 0.146 ± 0 .070 mM, respectively. The values in the two seasonal periods were similar, decreasing along the inshore-offshore gradient. Values for phytoplankton biomass and primary productionwere higher in the winter than the summer cruises, and decreased, in both seasonal periods, along the inshore / offshore gradient. Moreover, in both seasonal periods, picophytoplankton dominated both biomass and productivity, (56% and 44%, respectively) at stations beyond the frontal system, while microphytoplankton was more important at stations inside it (44% and 44%, respectively). Total phytoplankton biomass and primary production were directly related to nutrient concentrations. Regarding size classes, significant patterns of variation with nutrients were observed particularly for biomass. The results indicate that the size structure and function of phytoplankton guilds seem to be mediated by nutrient inflow, as well as by competitive interaction among size fractions.

Longitudinal patterns of spring-intermonsoon phytoplankton biomass, species compositions and size structure in the Bay of Bengal

2012 ◽  
Vol 31 (2) ◽  
pp. 121-128 ◽  
Author(s):  
Gang Li ◽  
Zhixin Ke ◽  
Qiang Lin ◽  
Guangyan Ni ◽  
Pingping Shen ◽  
...  
Keyword(s):  
Bay Of Bengal ◽  
Phytoplankton Biomass ◽  
Size Structure ◽  
Longitudinal Patterns

scholarly journals Size-structure of phytoplankton biomass and driving factors in east Lake Dongting

2020 ◽  
Vol 32 (5) ◽  
pp. 1508-1518
Author(s):  
LI Shengnan ◽  
◽  
XIONG Liping ◽  
PENG Hua ◽  
YU Li ◽  
...  
Keyword(s):  
Phytoplankton Biomass ◽  
Size Structure ◽  
Driving Factors ◽  
East Lake

Uncoupled changes in phytoplankton biomass and size structure in the western tropical Atlantic

2021 ◽  
pp. 103696
Author(s):  
Gabriel Bittencourt Farias ◽  
Juan-Carlos Molinero ◽  
Claire Carré ◽  
Arnaud Bertrand ◽  
Béatrice Bec ◽  
...  
Keyword(s):  
Phytoplankton Biomass ◽  
Size Structure ◽  
Tropical Atlantic

scholarly journals Zooplankton Structure and Potential Food Web Interactions in the Plankton of a Subtropical Chain-of-Lakes

2002 ◽  
Vol 2 ◽  
pp. 926-942 ◽  
Author(s):  
Karl E. Havens
Keyword(s):  
Food Web ◽  
Phytoplankton Biomass ◽  
Size Structure ◽  
Fish Predation ◽  
Average Concentration ◽  
Zooplankton Biomass ◽  
Lake Okeechobee ◽  
Zooplankton Species ◽  
High Concentration ◽  
Chl A

This study evaluates the taxonomic and size structure of macro-zooplankton and its potential role in controlling phytoplankton in the Kissimmee Chain-of-Lakes, six shallow interconnected lakes in Florida, U.S. Macro-zooplankton species biomass and standard limnological attributes (temperature, pH, total phosphorus [TP], chlorophyll a [Chl a], and Secchi transparency) were quantified on a bimonthly basis from April 1997 to February 1999. Concentrations of TP ranged from below 50 to over 150 μg l-1. Peak concentrations of particulate P coincided with maximal Chl a, and in one instance a high concentration of soluble reactive P followed. The cladoceran zooplankton was dominated by small species, including Eubosmina tubicen, Ceriodaphnia rigaudi, and Daphnia ambigua. The exotic daphnid, D. lumholtzii, periodically was abundant. The copepods were strongly dominated by Diaptomus dorsalis, a species previously shown to be highly resistant to fish predation. These results, and findings of controlled experiments on a nearby lake with a nearly identical zooplankton species complement, suggest that fish predation may be a major factor structuring the macro-zooplankton assemblage. Zooplankton biomass, on the other hand, may be affected by resource availability. There was a significant positive relationship between average biomass of macro-zooplankton and the average concentration of TP among the six lakes. No such relationship existed between zooplankton biomass and Chl a, suggesting that the predominant food web in these systems may be based on bacteria-plankton, as has been documented in nearby Lake Okeechobee. All of the zooplankton taxa encountered in the Kissimmee Chain-of-Lakes (exceptMesocyclops edax) are known bacteria grazers in Florida lakes. Phytoplankton biomass, measured as Chl a, was strongly associated with TP, both within and across lakes. Phytoplankton biomass was not associated with the biomass of zooplankton. These results, when considered in the context of nutrient-addition, zooplankton-exclosure studies on Lake Okeechobee, support the hypothesis that phytoplankton biomass in subtropical lakes is regulated by —bottom-up,“ rather than —top-down“ forces.

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