Effects of preferential primary consumer fishing on lower trophic level herbivores in the Line Islands

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Abstract/Contents

Abstract: In this study we document the biomass of Parrotfish and Surgeonfish in Christmas Island, Fanning Island, and Palmyra Atoll. The three islands exhibit a gradient of fishing pressure, which results in varying levels of apex predators affecting the biomass of herbivores. At three sites with comparable conditions between the islands, we identified species’ and estimated fish size in order to determine a biomass density. We also observed the feeding rates of the most common herbivore fish species at each island to establish the grazing rate. We observed very high herbivore biomass at Palmyra and correspondingly high grazing rates which bring about questions of what exactly is the connection between these herbivores and the health of the reef. This question, in turn, must be considered for future management of reefs.

Type of resource	text
Date created	June 9, 2005

Author	Egan, Logan Zane
Author	Téllez, Jesús Javier

Subject	Stanford@SEA
Subject	S-199
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	Parrotfish
Subject	Surgeonfish
Subject	Christmas Island
Subject	Kiribati Island
Subject	Fanning Island
Subject	Palmyra Atoll
Subject	Palmyra
Subject	Kiribati
Subject	Fanning
Subject	fishing pressure
Subject	apex predator
Subject	herbivore
Subject	fish size
Subject	biomass density
Subject	feeding rate
Subject	grazing rate
Subject	reef
Genre	Student project report

Location	https://purl.stanford.edu/dk711xt5587

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: Egan, Logan Zane; Téllez, Jesús Javier. 2005. Effects of preferential primary consumer fishing on lower trophic level herbivores in the Line Islands. Unpublished Student Work, S-199, Stanford@SEA, Stanford Digital Repository. https://purl.stanford.edu/dk711xt5587.

Stanford@SEA -- Student papers

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