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Macroalgae fuels co...
Macroalgae fuels coastal soft-sediment macrofauna : A triple-isotope approach across spatial scales
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Kahma, T. I. (author)
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- Karlson, Agnes M. L. (author)
- Stockholms universitet,Stockholms universitets Östersjöcentrum,Institutionen för ekologi, miljö och botanik
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- Sun, Xiaole (author)
- Stockholms universitet,Stockholms universitets Östersjöcentrum
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- Mörth, Carl-Magnus (author)
- Stockholms universitet,Institutionen för geologiska vetenskaper
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- Humborg, Christoph (author)
- Stockholms universitet,Stockholms universitets Östersjöcentrum,University of Helsinki, Finland
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- Norkko, Alf (author)
- Stockholms universitet,Stockholms universitets Östersjöcentrum,University of Helsinki, Finland
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- Rodil, Ivan F. (author)
- Stockholms universitet,Stockholms universitets Östersjöcentrum,University of Helsinki, Finland
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(creator_code:org_t)
- Elsevier BV, 2020
- 2020
- English.
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In: Marine Environmental Research. - : Elsevier BV. - 0141-1136 .- 1879-0291. ; 162
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Shallow coastal zones may provide cross-habitat nutrient subsidies for benthic communities offshore, as macrophyte matter can drift to deeper sediments. To study the relative importance of carbon and nutrient flows derived from different primary food sources in a coastal ecosystem, the diets of clam Macoma balthica, polychaete Marenzelleria spp. and mussel Mytilus trossulus were examined across environmental gradients in the northern Baltic Sea using a triple-isotope approach (i.e. 13C, 15N and 34S) and Bayesian mixing models (MixSIAR). Our results suggest that in shallow habitats, production from Fucus vesiculosus is the primary energy source for M. balthica. The proportion of macroalgae-derived matter in the diet of M. balthica and Marenzelleria spp. decreased following a depth gradient. Our models for M. trossulus indicate that the pelagic POM dominates its diet. Our results indicate a trophic connectivity between shallow macrophyte-dominated and deeper habitats, which receive significant amounts of nutrient subsidies from shallower areas.
Subject headings
- NATURVETENSKAP -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)
Keyword
- Coastal ecosystem
- Benthic macrofauna
- Food sources
- Stable isotopes
- Spatial scale
- Macroalgae
- Fucus vesiculosus
Publication and Content Type
- ref (subject category)
- art (subject category)
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