Relationships between trophic organization of benthic communities and organic matter content in Tyrrhenian Sea sediments |
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Authors: | Silvia Cocito Sandra Fanucci Ilaria Niccolai Carla Morri Carlo Nike Bianchi |
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Affiliation: | (1) ENEA-CREA S. Teresa, CP 316, I-19100 La Spezia, Italia;(2) Istituto Zoologia, Univ., via Balbi 5, I-16126 Genova, Italy |
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Abstract: | The organic content of sediments, often considered as an important trophic source for the benthos, can be used as a measurement of the trophic status of marine ecosystems. Soft-bottom communities were studied between Leghorn and Elba Island, from 5 to 500 m depth. Total biomass and trophic structure (percent dominance of trophic guilds) were related to organic carbon content and C/N ratio of sediments. Sediment organic matter, depending on its quantity and quality, could act as a food source or a stress source for the community. |
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Keywords: | soft-bottom communities benthic biomass sediment organic matter C/N ratio trophic guilds |
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