Unsaturated fatty acid content in seston and tropho-dynamic coupling in lakes

Müller-Navarra, Dörthe C.; Brett, Michael T.; Park, Sang-Kyu; Chandra, Sudeep; Ballantyne, Ashley P.; Zorita, Eduardo; Goldman, Charles R.

doi:10.1038/nature02210

Cited by 271 publications

(255 citation statements)

References 25 publications

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“…In marine fauna, the focus of EFA work has often been on EPA (eicosapentaenoic acid, 20:5 3) and DHA (docosahexaenoic acid, 22:6 3) which have very important functions at various trophic levels [27][28][29]. For example, the physical properties of EPA in wax esters are thought to be a key factor in buoyancy control in diapausing calanoid copepods [25].…”

Section: Lipid Nutritionmentioning

confidence: 99%

Lipids in Marine Ecosystems

2013

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Lipids provide the densest form of energy in marine ecosystems. They are also a solvent and absorption carrier for organic contaminants and thus can be drivers of pollutant bioaccumulation. Among the lipids, certain essential fatty acids and sterols are considered to be important determinants of ecosystem health and stability. Fatty acids and sterols are also susceptible to oxidative damage leading to cytotoxicity and a decrease in membrane fluidity. The physical characteristics of biological membranes can be defended from the influence of changing temperature, pressure, or lipid peroxidation by altering the fatty acid and sterol composition of the lipid bilayer. Marine lipids are also a valuable tool to measure inputs, cycling, and loss of materials. Their heterogeneous nature makes them versatile biomarkers that are widely used in marine trophic studies, often with the help of multivariate statistics, to delineate carbon cycling and transfer of materials. Principal components analysis has a strong following as it permits data reduction and an objective interpretation of results, but several more sophisticated multivariate analyses which are more quantitative are emerging too. Integrating stable isotope and lipid data can facilitate the interpretation of both data sets and can provide a quantitative estimate of transfer across trophic levels.

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Section: Lipid Nutritionmentioning

confidence: 99%

Lipids in Marine Ecosystems

2013

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“…Mar Ecol Prog Ser 465: [53][54][55][56][57][58][59][60][61][62][63][64][65][66][67] 2012 been identified as key factors modulating the efficiency of energy transfer at this plant -animal interface (Müller-Navarra et al 2004), and it is thus of paramount importance to clarify how consumers assimilate and modify dietary FA.…”

Section: Resale or Republication Not Permitted Without Written Consenmentioning

confidence: 99%

Bioconversion of fatty acids at the basis of marine food webs: insights from a compound-specific stable isotope analysis

Troch

Boeckx²,

Cnudde³

et al. 2012

Mar. Ecol. Prog. Ser.

129

100

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“…Micron-sized picoplankton are not directly accessible to most metazoan consumers (Tamigneaux et al 1995), so their energy content is routed through the microbial loop, with large respiratory losses. Some algal taxa synthesize biochemicals that are essential dietary components for animal consumers (Müller-Navarra et al 2004), while others produce potent toxins to disrupt animal growth or reproduction (Cembella 2003). The pathways and efficiencies of energy transfer from primary producers to aquatic food webs, including those sustaining upper trophic levels, are therefore determined by phytoplankton community composition.…”

Section: Introductionmentioning

confidence: 99%

Phytoplankton community ecology: principles applied in San Francisco Bay

Cloern¹,

Dufford²

2005

Mar. Ecol. Prog. Ser.

269

175

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In his seminal 1961 paper 'The paradox of the plankton' Am Nat 95:137-147, G. E. Hutchinson asked why many species of phytoplankton can coexist while competing for a small number of limiting resources in an unstructured habitat. Hutchinson anticipated the resolution of his paradox, recognizing that communities are organized by processes beyond resource competition including species interactions, habitat variability and dispersal. Since 1961 we have made fundamental discoveries that have revolutionized our conceptual understanding of pelagic ecology, including (1) habitat heterogeneity at all scales relevant to plankton population dynamics, (2) community shifts in response to global climate cycles, (3) fast and selective predation as a powerful top-down force to shape phytoplankton communities, (4) turbulent mixing as a physical process that selects species on the basis of their size and form, (5) mixotrophy that allows some algal species to tap organic nutrient pools and function at multiple trophic levels, (6) taxon-specific life cycles including alternating vegetative and resting stages, and (7) the pelagic as an open system where communities are continually reshaped by species immigration. Here we synthesize these discoveries to show how they validate and amplify Hutchinson's hypothesis that phytoplankton communities are assembled by many processes. Our synthesis is built around observations of phytoplankton species composition from a decade of study in San Francisco Bay, used as a case study to illustrate the contemporary principles of phytoplankton community ecology. We apply these principles to address 2 central questions:

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Unsaturated fatty acid content in seston and tropho-dynamic coupling in lakes

Cited by 271 publications

References 25 publications

Lipids in Marine Ecosystems

Lipids in Marine Ecosystems

Bioconversion of fatty acids at the basis of marine food webs: insights from a compound-specific stable isotope analysis

Phytoplankton community ecology: principles applied in San Francisco Bay

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