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Ecosystem Impacts of Consumer Evolution: Intraspecific Variation in the Elemental Phenotype of Aquatic Consumers


Abstract Primary production in aquatic ecosystems is often limited by the availability of nitrogen (N) and/or phosphorus (P). Animals can substantially alter the relative availability of these nutrients by storing and recycling them in differential ratios. Variation in these stoichiometric traits, i.e., the elemental phenotype, within a species can link organismal evolution to ecosystem function. I examined the drivers of intraspecific variation in the elemental phenotype of aquatic consumers to test for the generality of these effects. Over a thermal gradient in Panamá, I found that average specific growth grate and body P content of the mayfly Thraulodes increased with environmental temperature, but that these patterns were due to site-specific di... (more)
Created Date 2017
Contributor Moody, Eric Kellan (Author) / Elser, James J (Advisor) / Sabo, John L (Advisor) / Angilletta, Michael J (Committee member) / Capps, Krista A (Committee member) / Collins, James P (Committee member) / Arizona State University (Publisher)
Subject Ecology / Evolution & development / Ecological Stoichiometry / Evolutionary Ecology / Gambusia / Nutrient Cycling / Phosphorus
Type Doctoral Dissertation
Extent 159 pages
Language English
Copyright
Reuse Permissions All Rights Reserved
Note Doctoral Dissertation Biology 2017
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis