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Pools in Peril: Impacts of elevated nutrient inputs on anchialine ecology Troy Sakihara 1,3, Richard Mackenzie 2, Bruce Dudley 1,2, James Beets 1, Robert Nishimoto 3 1 University of Hawaii at Hilo, TCBES; 2 US Forest Service; 3 DLNR, Division of Aquatic Resources March 21, 2011

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Drawing By: Michael Furuya Hawaiian Anchialine Habitat

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Drawing By: Michael Furuya Coastal Development Upland Development Pollution Elevated Nutrient Input Exotic Species

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Photo by: Nelson Hairston Jr. et al. 2011

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Driving Questions Do excess nutrients (nitrogen, phosphorus) affect primary productivity? Terra-cotta algal samplers (Chl a, AFDM, %C, %N, C:N) How do pae ula and other herbivores affect algal production? -Grazer exclusion treatments Is it nitrogen or phosphorus that causes excess algal growth? Both? Are pools nutrient- limited? -Nutrient diffusion media .Stay tuned.

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MAHALO