Sagehen Creek Field Station

29 Jul, 05 AM - 29 Jul, 11 AM

Climate change in California is predicted to increase regional air temperatures and shift hydrologic regimes, resulting in increased stream water temperature and altered stream flow (Cayan et al. 2009). Stream temperature affects benthic macroinvertebrate growth, timing of phenological events, and emergence (Hannaford 1998, Bayoh and Lindsay 2003). In addition, temperature thresholds and may limit survival of certain taxa in extended periods of increased stream temperature (Lamberti and Resh 1985). Benthic macroinvertebrates have been used extensively as indicators of disturbance in aquatic ecosystems, including the effects of climate change (Barbour et al. 1999, Bonada et al. 2006, Lawerence et al. 2010). The caddisfly Dicosmoecus gilvipes (Limnephilidae), is a well-studied grazer found California streams, providing important ecosystem functions at the base of aquatic food webs (Lamberti et al. 1995, Hannaford et al. 1998), and may play an important role in the resiliency of aquatic food webs to climate change. This project will compare genetic structure of populations from coastal California streams to (1) determine the degree of genetic variability between California watersheds, and (2) assess the use of changes in population genetic structure as indicators of climate change, which will aid in making predictions as to the resilience of these macroinvertebrate populations in response to climate change scenarios.

Visit #29318 @Sagehen Creek Field Station

Approved

Under Project # 25447 | Research

Genetic Structure of California Aquatic Insects

graduate_student - University of California, Berkeley

Reservation Members(s)

Group of 2 Graduate Student Jul 29, 2012 (1 days)

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Day Use 2 Jul 29 (6 hours)