1. Ralph W. Tingley III 1, Richard MacKenzie 2, Dana M. Infante 1, Ayron M. Strauch 3 1 Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI 2 Institute of Pacific Island Forestry, Pacific Southwest Research Station, Hilo, HI 3 University of Hawaii, Manoa, HI

2. Climate change may lead to decreased flow in Hawaiis freshwater streams Increase in air temperature, amplified at high elevations (Giambelluca 2008) Changes or shifts in annual precipitation Expansion of strawberry guava USGS has shown a 10% decrease in stream flow over the last 30 years (Oki 2003) How might these changes impact stream biota? How can we study this impact?

3. Unique and extreme gradient in precipitation Similar landscape and land cover characteristics

4. Why focus on shrimp? Keystone species Culturally important Opportunity to gain knowledge on life history Does variation in annual precipitation alter life history characteristics, abundance and habitat selection? Growth rate Secondary production Fecundity Habitat selection Abundance hawaii.edu/hsrc/home/timbolsv.htm

5. 1. Production and growth rate Capture-mark-recapture 2. Fecundity # gravid females and weight 3. Abundance/habitat selection Random 1 m 2 visual estimates Stratified by habitat type hbs.bishopmuseum.org/waipio/Critter%20pages/ atyoida.html

6. Growth rate Secondary production Gravid females Individual fecundity In streams with less precipitation (i.e. flow): Pool occupancy Density hawaii.gov/dlnr/dar/streams_native_anim als.html

7. Immediate applications Better understanding of life history characteristics Insight into habitat selection of freshwater shrimp throughout the tropics Define in-stream flow thresholds Web-based management tool Future directions Use results and climate change projections to predict distribution and abundance changes Explore relationships between abundance and land cover

8. Dr. Christian Giardina, Dr. Gordon Smith, Dr. Robert Nishimoto, Dr. Greg Bruland Tara Holitzki USDA Forest Service Division of Aquatic Resources HFHP Partnership University of Hawaii at Manoa Kamehameha Schools Michigan Sate University USGS

9. Mahalo!