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.

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Presentation transcript:

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 Hawai‘i at Hilo, TCBES; 2 US Forest Service; 3 DLNR, Division of Aquatic Resources March 21, 2011

Drawing By: Michael Furuya Hawaiian Anchialine Habitat

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

Photo by: Nelson Hairston Jr. et al. 2011

Driving Questions Do excess nutrients (nitrogen, phosphorus) affect primary productivity? –Terra-cotta algal samplers (Chl a, AFDM, %C, %N, C:N) How do ‘ōpae ‘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.

MAHALO