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Spatial stoichiometry: cross-ecosystem material flows and their impact on recipient ecosystems and organisms
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences. Plant Biology and Nature Management, Vrije Univ. Brussel, Brussels, Belgium.
Dept of Ecology and Evolutionary Biology, Cornell Univ., Ithaca, USA; Dept of Biological Sciences, Univ. of Alabama, Tuscaloosa, USA.
Dept of Geography and Environment, Mount Allison Univ., Sackville, New Brunswick, Canada.
Dept of Biological Sciences, Univ. of Notre Dame, Notre Dame, USA.
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2015 (English)In: OIKOS, Vol. 124, no 7, 920-930 p.Article in journal (Refereed) Published
Abstract [en]

Cross-ecosystem material flows, in the form of inorganic nutrients, detritus and organisms, spatially connect ecosystems and impact food web dynamics. To date research on material flows has focused on the impact of the quantity of these flows and largely ignored their elemental composition, or quality. However, the ratios of elements like carbon, nitrogen and phosphorus can influence the impact material flows have on food web interactions through stoichiometric mismatches between resources and consumers. The type and movement of materials likely vary in their ability to change stoichiometric constraints within the recipient ecosystem and materials may undergo changes in their own stoichiometry during transport. In this literature review we evaluate the importance of cross-ecosystem material flows within the framework of ecological stoichiometry. We explore how movement in space and time impacts the stoichiometry of material flow, as these transformations are essential to consider when assessing the ability of these flows to impact food web productivity and ecosystem functioning. Our review suggests that stoichiometry of cross-ecosystem material flows are highly dynamic and undergo changes during transport across the landscape or from human influence. These material flows can impact recipient organisms if they change stoichiometry of the abiotic medium, or provide resources that have a different stoichiometry to in situ resources. They might also alter consumer excretion rates, in turn altering the availability of nutrients in the recipient ecosystem. These alterations in stoichiometric constraints of recipient organisms can have cascading trophic effects and shape food web dynamics. We highlight significant gaps in the literature and suggest new avenues for research that explore how cross-ecosystem material flows impact recipient ecosystems when considering differences in stoichiometric quality, their movement through the landscape and across ecosystem boundaries, and the nutritional constraints of the recipient organisms.

Place, publisher, year, edition, pages
John Wiley & Sons, 2015. Vol. 124, no 7, 920-930 p.
National Category
Ecology Earth and Related Environmental Sciences
URN: urn:nbn:se:umu:diva-106788DOI: 10.1111/oik.02392ISI: 000357824900013OAI: diva2:847560
Available from: 2015-08-20 Created: 2015-08-07 Last updated: 2015-08-20Bibliographically approved

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Sitters, Judith
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