Journal ArticleDOI
Microbial food web structure in the Arabian Sea: a US JGOFS study
David L. Garrison,Marcia M. Gowing,Margaret P. Hughes,Lisa Campbell,David A. Caron,Mark R. Dennett,Alexi Shalapyonok,Robert J. Olson,Michael R. Landry,Susan L Brown,Hongbin Liu,Farooq Azam,Grieg F. Steward,Hugh W. Ducklow,David C. Smith +14 more
TLDR
In this article, the biomass of planktonic organisms, ranging from heterotrophic bacteria through microplankton-sized organisms, was estimated using a variety of methods including #ow cytometry and microscopy.Abstract:
One of the main objectives of the Joint Global Ocean Flux Studies (JGOFS) program is to develop an understanding of the factors controlling organic carbon production in the ocean and the time-varying vertical #ux of carbon from surface waters (US JGOFS (1990) US JGOFS Planning Report Number 11; Sarmiento and Armstrong (1997) US JGOFS Synthesis and Modeling Project Implementation Plan). A considerable amount of evidence suggests that carbon cycling and the potential for exporting carbon from ocean systems is a function of food web structure. As part of the US JGOFS Arabian Sea Studies, the biomass of planktonic organisms, ranging from heterotrophic bacteria through microplankton-sized organisms, was estimated using a variety of methods including #ow cytometry and microscopy. This is a "rst attempt to combine biomass data from a number of sources, evaluate the structure of the foodread more
Citations
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Journal ArticleDOI
Empirical and mechanistic models for the particle export ratio
TL;DR: In this paper, the authors present new empirical and mechanistic models for predicting the export of organic carbon out of the surface ocean by sinking particles, using sea surface temperature and chlorophyll concentrations as predictor variables.
Journal ArticleDOI
The trophic roles of microzooplankton in marine systems
TL;DR: Calbet et al. as mentioned in this paper identified the main protists responsible for most of the grazing impact on phytoplankton in two contrasting marine ecosystems: oligotrophic waters and productive waters, such as upwelling systems, spring blooms, and other blooms in nearshore and estuarine systems.
Journal ArticleDOI
Monsoon-Driven Biogeochemical Processes in the Arabian Sea
TL;DR: In this paper, the authors present an overview of the dynamical response to seasonal monsoonal forcing and the characteristics of the physical environment that fundamentally drive regional biogeochemical variability.
Journal ArticleDOI
Distribution of Membrane Lipids of Planktonic Crenarchaeota in the Arabian Sea
Jaap S. Sinninghe Damsté,W. Irene C. Rijpstra,Ellen C. Hopmans,Fredrick G. Prahl,Stuart G. Wakeham,Stefan Schouten +5 more
TL;DR: Intact core tetraether membrane lipids of marine planktonic Crenarchaeota were quantified in water column-suspended particulate matter obtained from four depth intervals at seven stations in the northwestern Arabian Sea to investigate the distribution of the organisms at various depths.
Journal ArticleDOI
Global-scale carbon and energy flows through the marine planktonic food web: An analysis with a coupled physical–biological model
TL;DR: A global ocean-ice-ecosystem model was assessed against a suite of observation-based planktonic food web flux estimates, many of which were not considered in previous modeling studies, and it was suggested that shortened food webs, elevated growth efficiencies, and tight consumer-resource coupling enable oceanic upwelling systems to support 45% of pelagic mesozooplankton production despite accounting for only 22% of ocean area and 34% of NPP.
References
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Journal ArticleDOI
The Ecological Role of Water-Column Microbes in the Sea*
TL;DR: Evidence is presented to suggest that numbers of free bacteria are controlled by nanoplankton~c heterotrophic flagellates which are ubiquitous in the marine water column, thus providing the means for returning some energy from the 'microbial loop' to the conventional planktonic food chain.
Journal ArticleDOI
A practical strategy for analysing multispecies distribution patterns
TL;DR: A strategy is presented for analysing marine biological survey data and relating the biotic patterns to environmental data to avoid circular argument, and the 4 major station groups and species groups are related to one another in terms of morphological adaptation to the habitat.
BookDOI
HANDBOOK Of Methods in Aquatic Microbial Ecology
TL;DR: This work focuses on the isolation and culture of Marine Protists from Estuarine, Littoral, Psammolittoral and Sublittoral Waters and the identification, Enumeration, and Diversity of Anaerobic and Microaerobic Protists.
Journal ArticleDOI
Photosynthesis and Fish Production in the Sea
TL;DR: The two sets of variables primary production and the associated food chain dynamics may act additively to produce differences in fish production which are far more pronounced and dramatic than the observed variability of the individual causative factors.
Journal ArticleDOI
Characteristics, dynamics and significance of marine snow
TL;DR: Diatom flocculation is a poorly understood source of marine snow of potential global significance and rates of snow production and breakdown are critical to predicting flux and to understanding biological community structure and transformations of matter and energy in the water column.