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- W2221065341 abstract "Threats to marine ecosystems include habitat destruction and degradation of water quality, resulting from land- and ocean-based human activities. Anthropogenic input causing modification of water quality, can affect primary productivity and thus food availability and quality for higher trophic levels. This is especially important for sedentary benthic intertidal communities, which rely on local food availability. We investigated the effect of urbanization on the dietary regime of four species of intertidal filter feeders (three barnacles and one mussel) at sites close to high-density cities and at sites far from heavily urbanized areas using fatty acid and stable isotope techniques. δ15N was significantly higher at urbanized sites compared to their corresponding control sites for all species with few exceptions, while no effect on δ13C was recorded. Barnacle fatty acid profiles were not affected by cities, while mussels from sites close to cities had fatty acid signatures with a higher proportion of polyunsaturated fatty acids (PUFA). We suggest that the enrichment in δ15N at urbanised sites reflects the influence of anthropogenically derived nitrogen directly linked to wastewater input from domestic and industrial sewage. Linked to this, the high proportion of PUFA in mussels at urbanized sites may reflect the influence of increased nitrogen concentrations on primary production and enhanced growth of large phytoplankton cells. The results indicate that anthropogenic effects can strongly influence the diets of benthic organisms, but these effects differ among taxa. Changes in the diet of such habitat forming species can affect their fitness and survival with potential effects on the populations associated with them." @default.
- W2221065341 created "2016-06-24" @default.
- W2221065341 creator A5016547046 @default.
- W2221065341 creator A5030404268 @default.
- W2221065341 creator A5036648949 @default.
- W2221065341 date "2016-02-01" @default.
- W2221065341 modified "2023-10-17" @default.
- W2221065341 title "Does proximity to urban centres affect the dietary regime of marine benthic filter feeders?" @default.
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- W2221065341 doi "https://doi.org/10.1016/j.ecss.2015.12.017" @default.
- W2221065341 hasPublicationYear "2016" @default.