Analysis of Large Predator Populations in the Line Islands

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Abstract/Contents

Abstract: Human disturbance and reef health are inextricably linked. Specifically, the biomass of predators in a marine ecosystem has been identified as an indicator of overall reef health. Less affected reefs have been shown to have a significantly high percentage of predator biomass relative to the biomass of other fish. Our research examines this trend, observing individual species of predators and accounting for their biomass, species diversity, and functional diversity. All research was conducted in the Pacific Line Islands along a gradient of human disturbance throughout the islands. By using both a line transect and a point count we were able to compile two independent data sets. Both data sets were comparable and indicated that more heavily impacted reefs have lower predator biomass, less predator species diversity, and fewer functional groups represented. With this data we are better able to determine which functional groups are threatened the most and therefore deduce which species face the highest risk of extinction in the respective regions. Furthermore, previous biomass research is reinforced by our findings.

Type of resource	text
Date created	June 11, 2007

Author	Rego, Delamon A.
Author	Hanson, Christopher M.

Subject	Stanford@SEA
Subject	S-211
Subject	Hopkins Marine Station
Subject	Department of Biology
Subject	Department of Earth System Science
Subject	BIOHOPK 182H
Subject	BIOHOPK 323H
Subject	EARTHSYS 323
Subject	ESS 323
Subject	human impact
Subject	human disturbance
Subject	reef
Subject	reef health
Subject	predator biomass
Subject	Line Islands
Subject	extinction
Genre	Student project report

Location	https://purl.stanford.edu/td603xj1523

Use and reproduction: User agrees that, where applicable, content will not be used to identify or to otherwise infringe the privacy or confidentiality rights of individuals. Content distributed via the Stanford Digital Repository may be subject to additional license and use restrictions applied by the depositor.
License: This work is licensed under a Creative Commons Attribution 3.0 Unported license (CC BY).

Preferred Citation: Rego, Delamon A.; Hanson, Christopher M.. 2007. Analysis of Large Predator Populations in the Line Islands. Unpublished Student Work, S-211, Stanford@SEA, Stanford Digital Repository. https://purl.stanford.edu/td603xj1523.

Stanford@SEA -- Student papers

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