Predicting marine phytoplankton community size structure from empirical relationships with remotely sensed variables
Carolyn Barnes,Xabier Irigoien,José A. A. De Oliveira,David Maxwell,Simon Jennings,Simon Jennings +5 more
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In this article, the authors describe relationships between the environment and the size composition of phytoplankton communities, using a collation of empirical measurements of size composition from sites that include polar, tropical and upwelling environments.Abstract:
The size composition of primary producers has a potential influence on the length of marine food chains and carbon sinking rates, thus on the proportion of primary production (PP) that is removed from the upper layers and available to higher trophic levels. While total rates of PP are widely reported, it is also necessary to account for the size composition of primary producers when developing food web models that predict consumer biomass and production. Empirical measurement of size composition over large space and time scales is not feasible, so one approach is to predict size composition from environmental variables that are measured and reported on relevant scales. Here, we describe relationships between the environment and the size composition of phytoplankton communities, using a collation of empirical measurements of size composition from sites that include polar, tropical and upwelling environments. The size composition of the phytoplankton communities can be predicted using two remotely sensed variables, chlorophyll-a concentration and sea surface temperature. Applying such relationships in combination allows prediction of the slope and location of phytoplankton size spectra and estimation of the percentage of different sized phytoplankton groups in communities.read more
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Can marine fisheries and aquaculture meet fish demand from a growing human population in a changing climate
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Overview of Integrative Assessment of Marine Systems: The Ecosystem Approach in Practice
Ángel Borja,Michael Elliott,Jesper H. Andersen,Torsten Berg,Jacob Carstensen,Benjamin S. Halpern,Benjamin S. Halpern,Anna-Stiina Heiskanen,Samuli Korpinen,Julia S. Stewart Lowndes,Georg Martin,Naiara Rodríguez-Ezpeleta +11 more
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Does warming enhance the effect of microzooplankton grazing on marine phytoplankton in the ocean
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Modelling the effects of climate change on the distribution and production of marine fishes: accounting for trophic interactions in a dynamic bioclimate envelope model.
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TL;DR: Predicted latitudinal shifts are, on average, reduced by 20% when species interactions are incorporated, compared to DBEM predictions, with pelagic species showing the greatest reductions.
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Locations of marine animals revealed by carbon isotopes
Kirsteen M. MacKenzie,Martin R. Palmer,A. Moore,Anton T. Ibbotson,William R. C. Beaumont,David Poulter,Clive N. Trueman +6 more
TL;DR: It is shown that marine location can be inferred from animal tissues, and carbon isotope ratios can be used to identify the location of open ocean feeding grounds for any pelagic animals for which tissue archives and matching records of sea surface temperature are available.
References
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Some aspects of the analysis of size spectra in aquatic ecology
TL;DR: The distributional basis of the established approach to model seston size distributions is examined and a connection between the biomass size spectrum and the Pareto distribution is drawn, a model widely used in other disciplines dealing with size-structured systems.
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Scaling of phytoplankton photosynthesis and cell size in the ocean
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Latitudinal variation in plankton size spectra in the Atlantic Ocean
TL;DR: A “dome-shaped” pattern in the slopes of community size spectra was observed in the Atlantic, indicating a decrease in the trophic transfer efficiency of energy with increasing latitude and phytoplankton biomass.
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Relationships between phytoplankton growth and cell size in surface oceans: Interactive effects of temperature, nutrients, and grazing
Bingzhang Chen,Hongbin Liu +1 more
TL;DR: It is concluded that inherently low maximal growth rates of picophytoplankton, not ambient nutrient effects, play the major role in determining the positive relationships over the size range where phytoplANKton size is below the modal size.