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Accepted (AM)Open Access (License Unspecified), Open
Journal article
Cultural Eutrophication Is Reflected in the Stable Isotopic Composition of the Eastern Mudsnail, Nassarius obsoletus
Journal of environmental quality, v 47(1)
01 Jan 2018
PMID: 29415115
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
In aquatic ecosystems, biological indicators are used in concert with nutrient concentration data to identify habitat impairments related to cultural eutrophication. This approach has been less commonly implemented in coastal areas due to the dominance of physical conditions in structuring biological assemblage data. Here, we describe the use of the stable isotopic composition of Nassarius obsoletus (Say), the eastern mudsnail, as an indicator of cultural eutrophication for 40 locations in coastal estuaries in New York. We found N-15 enrichment in mudsnail tissue where watersheds had high population densities, land use patterns were more urbanized, and when sampling sites were adjacent to wastewater treatment plant discharges. Stable carbon isotopes were responsive to salinity and watershed forest cover, with more saline sites reflecting a predominantly C-4 or algal carbon isotopic signature and more forested sites a lighter isotopic signature reflecting greater inputs of C-3 terrestrial detrital carbon. Mudsnail nitrogen isotopic composition had a high level of separation between more affected and pristine watersheds (from 6.6 to 14.1%), highlighting its utility as an indicator. We thus propose that stable isotope values of estuarine biota, such as the eastern mudsnail, can be used in concert with water quality data to identify areas where improvements in water quality are needed and can also be used to identify sources of detrital carbon to estuarine environments.
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Details
- Title
- Cultural Eutrophication Is Reflected in the Stable Isotopic Composition of the Eastern Mudsnail, Nassarius obsoletus
- Creators
- Elizabeth Burke Watson - Academy of Natural Sciences of Drexel UniversityKatelyn Szura - University of Rhode IslandElisabeth Powell - Academy of Natural Sciences of Drexel UniversityNicole Maher - The Nature ConservancyCathleen Wigand - Environmental Protection Agency
- Publication Details
- Journal of environmental quality, v 47(1)
- Publisher
- Amer Soc Agronomy
- Number of pages
- 8
- Grant note
- EPA999999 / Intramural EPA
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Biodiversity, Earth, and Environmental Science (BEES)
- Web of Science ID
- WOS:000422777100020
- Scopus ID
- 2-s2.0-85040469120
- Other Identifier
- 991019182652204721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Environmental Sciences