Controls on the diversity–productivity relationship in a marine ecosystem model

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Controls on the diversity–productivity relationship in a marine ecosystem model. / Prowe, A.E. Friederike; Pahlow, Markus; Oschlies, Andreas.

In: Ecological Modelling, Vol. 225, 2012, p. 167-176.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Prowe, A.E. Friederike; Pahlow, Markus; Oschlies, Andreas / Controls on the diversity–productivity relationship in a marine ecosystem model.

In: Ecological Modelling, Vol. 225, 2012, p. 167-176.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Bibtex

@article{12681ea01d26492586bbb53296dbdc9c,
title = "Controls on the diversity–productivity relationship in a marine ecosystem model",
publisher = "Elsevier BV",
author = "Prowe, {A.E. Friederike} and Markus Pahlow and Andreas Oschlies",
year = "2012",
doi = "10.1016/j.ecolmodel.2011.11.018",
volume = "225",
pages = "167--176",
journal = "Ecological Modelling",
issn = "0304-3800",

}

RIS

TY - JOUR

T1 - Controls on the diversity–productivity relationship in a marine ecosystem model

A1 - Prowe,A.E. Friederike

A1 - Pahlow,Markus

A1 - Oschlies,Andreas

AU - Prowe,A.E. Friederike

AU - Pahlow,Markus

AU - Oschlies,Andreas

PB - Elsevier BV

PY - 2012

Y1 - 2012

N2 - Species diversity influences the productivity of ecosystems across habitats, and may influence their susceptibility to environmental changes. More diverse communities are often found to be more productive because selection and complementarity effects allow more efficient use of available resources. However, which principles promote coexistence in pelagic model ecosystems is only beginning to be understood as are controls on the diversity–productivity relationship. Here we show that the diversity–productivity relationship of phytoplankton in a global self-assembling ocean ecosystem model depends on the simulated nutrient supply. Increasing productivity with increasing diversity can be found in regions with high nutrient supply. Using a simple idealized model we show that a more diverse community can be more productive if different phytoplankton types utilize complementary niches, here created by preferential zooplankton grazing, thereby increasing resource use. In our model context, total nutrient supply determines a maximum diversity sustained by the ecosystem. Systems with a low nutrient supply cannot sustain high productivity of more diverse communities and produce a neutral or even negative diversity–productivity relationship. Our model results suggest links between diversity, productivity and export production in marine pelagic ecosystems, with the potential for feedbacks of diversity on productivity in response to expected future environmental changes.

AB - Species diversity influences the productivity of ecosystems across habitats, and may influence their susceptibility to environmental changes. More diverse communities are often found to be more productive because selection and complementarity effects allow more efficient use of available resources. However, which principles promote coexistence in pelagic model ecosystems is only beginning to be understood as are controls on the diversity–productivity relationship. Here we show that the diversity–productivity relationship of phytoplankton in a global self-assembling ocean ecosystem model depends on the simulated nutrient supply. Increasing productivity with increasing diversity can be found in regions with high nutrient supply. Using a simple idealized model we show that a more diverse community can be more productive if different phytoplankton types utilize complementary niches, here created by preferential zooplankton grazing, thereby increasing resource use. In our model context, total nutrient supply determines a maximum diversity sustained by the ecosystem. Systems with a low nutrient supply cannot sustain high productivity of more diverse communities and produce a neutral or even negative diversity–productivity relationship. Our model results suggest links between diversity, productivity and export production in marine pelagic ecosystems, with the potential for feedbacks of diversity on productivity in response to expected future environmental changes.

U2 - 10.1016/j.ecolmodel.2011.11.018

DO - 10.1016/j.ecolmodel.2011.11.018

JO - Ecological Modelling

JF - Ecological Modelling

SN - 0304-3800

VL - 225

SP - 167

EP - 176

ER -