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| Wlodarska-kowalczuk, Maria; Aune, Magnus; Michel, Loic; Zaborska, Agata; Legezynska, Joanna. |
| It is predicted that a diverse array of functional traits in species-rich assemblages can lead to strong resource partitioning among coexisting species and moderate a wider spectrum of resource use. We compared two benthic communities in an Arctic fjord: a species-rich community (in an outer basin) and an impoverished community (in a glacially impacted bay) and explored (1) if high species richness was translated into high functional trait richness and (2) if high taxonomic and functional diversity promoted high trophic diversity in terms of resource use (indicated by isotopic niche measures). We documented higher functional trait richness in the outer basin (computed based on traits describing feeding mode, mobility, food source, body size and life... |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00516/62774/67171.pdf |
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| Włodarska‐kowalczuk, Maria; Mazurkiewicz, Mikołaj; Górska, Barbara; Michel, Loic; Jankowska, Emilia; Zaborska, Agata. |
| Fjords have been recently recognized as hotspots of organic carbon (Corg) sequestration in marine sediments. This study aims to identify regional and local drivers of variability of Corg burial in north Atlantic and Arctic fjords. We provide a comparative quantification of Corg, δ13C, photosynthetic pigments content, benthic biomass, consumption, Corg accumulation and burial rates in sediments in six fjords (60 to 810N). Higher sediment Corg content in southern Norway reflected longer phytoplankton growth season and higher productivity. Higher contributions of terrestrial Corg were noted in temperate/southern Norway (dense land vegetation and high precipitation) and Arctic/Svalbard (glacial erosion) than in subarctic/northern Norway locations. Benthic... |
| Tipo: Text |
Palavras-chave: S; Organic matter preservation; Organic carbon sequestration; Benthic carbon mineralization; Sedimentary processes; Early diagenesis; Marine geochemistry. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00591/70318/68353.pdf |
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