Food sources of macrobenthos in an estuarine seagrass habitat (Zostera noltii) as revealed by dual stable isotope signatures
نویسندگان
چکیده
منابع مشابه
First Phytochemical Evidence of Chemotypes for the Seagrass Zostera noltii.
The variability of the flavonoid content of two populations of Z. noltii from different geographical zones, i.e., the Bay of Arcachon and the Bay of Cadiz, was evaluated. Samples were collected in spring and autumn at the two sites, and extracts were prepared by maceration in water. The phenolic content was fully characterized using Nuclear Magnetic Resonance (NMR), UV and Liquid Chromatography...
متن کاملNitrogen-stable isotope signatures in estuarine food webs: A record of increasing urbanization in coastal watersheds
Nutrient enrichment as a result of anthropogenic activity concentrated along the land-sea margin is increasing eutrophication of near-shore waters across the globe. Management of eutrophication in the coastal zone has been ’ hampered by the lack of a direct method to trace nitrogen sources from land into coastal food webs. Stable isotope data from a series of estuaries receiving nitrogen loads ...
متن کاملCauses of sulfur isotope variability in the seagrass, Zostera capricorni
Sulfur has been proposed as a useful element to employ in addition to carbon and nitrogen in stable isotope studies of marine food webs, but variability in dS of primary producers may prevent food web resolution. dS values in green leaves of the seagrass, Zostera capricorni, showed considerable variability (12.7–17.6x) in a survey in Moreton Bay, Australia. We demonstrated that dS values were c...
متن کاملThe impact of extreme weather events on the seagrass Zostera noltii and related Hydrobia ulvae population.
Coastal areas are typically subjected to a range of stressors, but they now face the additional stressor of climate change, manifested in part by an increased intensity and frequency of extreme weather events. Thus, the Mondego estuary (Portugal) has experienced organic enrichment (eutrophication) issues and these are potentially exacerbated by extreme weather events (floods, droughts and heat ...
متن کاملEffects of CO2 enrichment on photosynthesis, growth, and nitrogen metabolism of the seagrass Zostera noltii
Seagrass ecosystems are expected to benefit from the global increase in CO(2) in the ocean because the photosynthetic rate of these plants may be C(i)-limited at the current CO(2) level. As well, it is expected that lower external pH will facilitate the nitrate uptake of seagrasses if nitrate is cotransported with H(+) across the membrane as in terrestrial plants. Here, we investigate the effec...
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ژورنال
عنوان ژورنال: Marine Biology
سال: 2013
ISSN: 0025-3162,1432-1793
DOI: 10.1007/s00227-013-2238-0