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Determining the Influence of Kiawe and Milo on Nutrient Loads of Anchialine Ponds Kehau Nelson-Kaula TCBES Water Resources Meeting Hilo, HI March 21, 2011.

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Presentation on theme: "Determining the Influence of Kiawe and Milo on Nutrient Loads of Anchialine Ponds Kehau Nelson-Kaula TCBES Water Resources Meeting Hilo, HI March 21, 2011."— Presentation transcript:

1 Determining the Influence of Kiawe and Milo on Nutrient Loads of Anchialine Ponds Kehau Nelson-Kaula TCBES Water Resources Meeting Hilo, HI March 21, 2011

2 Litterfall Nutrients in litter correlated w/ availability in ecosystem Nutrient source – Particularly N Ecological subsidy – May affect food webs Photo: Troy Sakihara

3 Kiawe vs. Milo Kiawe (Prosopis pallida) Invasive species N-fixer Milo (Thespesia populnea) Indigenous species Non N-fixer luirig.altervista.org Photos: Troy Sakihara

4 Hypothesis Kiawe will have a greater influence on the nutrient load of the anchialine ponds compared to milo. Kiawe : Nutrients Quantity

5 Study Sites

6 Methods 1.Quantifying potential nutrient inputs Leaf litter: 1.Quantity (g/m 2 /yr) 2.Quality (nutrient concentrations) 2.Determine potential nutrient loads from soil - Quantify N mineralization

7 Importance Water quality Impacts to native and non-native biota Photos: Troy Sakihara

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