publication . Article . 2013

Hydrogen isotope variability in prairie wetland systems: implications for studies of migratory connectivity

Lauren Bortolotti; Clark, R. G.; Wassenaar, L. I.;
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  • Published: 01 Jan 2013 Journal: Ecological Applications, volume 23, pages 110-121 (issn: 1051-0761, Copyright policy)
  • Publisher: Wiley
Abstract
Hydrogen isotopes (δ2H) are often used to infer the origins of migratory animals based on the strong correlation between deuterium content of tissues and long-term patterns of precipitation. However, the extreme flood and drought dynamics of surface waters in prairie wetland systems could mask these expected correlations. We investigated H isotopic variability in an aquatic food web associated with Tree Swallows (Tachycineta bicolor) that rely heavily on wetland-derived aerial insects for food. We evaluated isotopic turnover and incorporation of environmental water into tissue, processes that could affect H isotopic composition. Wetland water and aquatic inverte...
Subjects
Medical Subject Headings: food and beverages
free text keywords: Ecology, Stable isotope ratio, Biology, Animal migration, Algae, biology.organism_classification, Wetland, geography.geographical_feature_category, geography, Food web, Tachycineta bicolor, Invertebrate, Precipitation
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