Sökning: WFRF:(Lewandowska Aleksandra M.) >
Linking Resource Qu...
Linking Resource Quality and Biodiversity to Benthic Ecosystem Functions Across a Land-to-Sea Gradient
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Mäkelin, Saara (författare)
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Lewandowska, Aleksandra M. (författare)
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Rodil, Ivan F. (författare)
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- Karlson, Agnes M. L., 1981- (författare)
- Stockholms universitet,Institutionen för ekologi, miljö och botanik,Stockholms universitets Östersjöcentrum
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- Humborg, Christoph, 1963- (författare)
- Stockholms universitet,Stockholms universitets Östersjöcentrum,University of Helsinki, Finland
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- Villnäs, Anna (författare)
- Stockholms universitet,Stockholms universitets Östersjöcentrum,University of Helsinki, Finland
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(creator_code:org_t)
- 2024
- 2024
- Engelska.
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Ingår i: Ecosystems. - 1432-9840 .- 1435-0629. ; 27:2, s. 329-345
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Benthic macrofauna modifies carbon and nutrient retention and recycling processes in coastal habitats. However, the contribution of benthic consumers to carbon and nutrient storage and recycling shows variation over spatial scales, as the benthic community composition changes in response to differences in environmental conditions. By sampling both shallow sandy and deep muddy sediments across a land-to-sea gradient in the northern Baltic Sea, we explored if benthic community composition, stoichiometry and process rates change in response to alterations in environmental conditions and food sources. Our results show that benthic faunal biomass, C, N, and P stocks, respiration rate and secondary production increase across the land-to-sea gradient in response to higher resource quality towards the open sea. The seston δ13C indicated terrestrial runoff and δ15N sewage input at the innermost study sites, whereas more fresh marine organic matter towards the open sea boosted benthic faunal carbon storage, respiration rate, and secondary production, that is, the generation of consumer biomass, which are essential processes for carbon turnover in this coastal ecosystem. Also, biological factors such as increasing species richness and decreasing biomass dominance of the clam Macoma balthica were significant in predicting benthic faunal C, N, and P stocks and process rates, especially at sandy sites. Interestingly, despite the variation in food sources, the benthic faunal C:N:P ratios remained stable across the gradient. Our results prove that human activities in the coastal area can influence the important links between biodiversity, structure, and process rates of benthic communities by modifying the balance of available resources, therefore hampering the functioning of coastal ecosystems.
Ämnesord
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Nyckelord
- Macrofauna
- Stoichiometry
- Biodiversity
- Ecosystem function
- Carbon cycling
- Respiration
- Secondary production
- Stable isotopes
- Dominance
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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