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Nitrogen‐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…
Stable isotope ratios as tracers in marine aquatic food webs
- R. Michener
- Environmental Science
Natural abundance-level measurement of the nitrogen isotopic composition of oceanic nitrate: an adaptation of the ammonia diffusion method
Stable isotopes in ecology and environmental science
Contributors. Abbreviations. Introduction. 1. Stable isotope chemistry and measurement: a primer. Elizabeth W. Sulzman. Introduction. What isotopes are, what makes them distinct. Properties of…
Stable Isotope Ratios as Tracers in Marine Food Webs: An Update
Isotopic evidence for chemosynthesis‐based nutrition of macrobenthos: The lightness of being at Pacific methane seeps
The importance of chemosynthetic nutritional pathways was examined for macrofaunal invertebrates (≫300 µm) from methane seeps in the Gulf of Alaska (4,413–4,443 m), on the Oregon margin (590 m), and…
Trophic relations of brown and black bears in several western North American Ecosystems
Adult male brown bears were more carnivorous than any other age or sex class within these ecosystems, and long-dead bears can be compared to living bears to evaluate historical changes in ecosystems.
Low turnover rates of carbon isotopes in tissues of two nectar-feeding bat species
- C. Voigt, F. Matt, R. Michener, T. Kunz
- Environmental ScienceJournal of Experimental Biology
- 15 April 2003
The findings of low turnover rates in hair was low in L. curasoae and undetectable in G. soricina, which may be explained by the seasonal growth of the hair in these two species.
Effects of sample preparation on stable isotope ratios of carbon and nitrogen in marine invertebrates: implications for food web studies using stable isotopes
Guidelines for the standardization of sample preparation protocols for isotopic analysis are proposed both for large and small marine invertebrates and recommend avoiding both acid washing and DWR, and performing lipid extraction and gut evacuation in most cases.
The role and contribution of the seagrass Posidonia oceanica (L.) Delile organic matter for secondary consumers as revealed by carbon and nitrogen stable isotope analysis