Abstract/Details

Agent -based simulation of a recreational coral reef fishery: Linking ecological and social dynamics


2007 2007

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Abstract (summary)

In this agent-based simulation, the ecological dynamics of a simple coral reef ecosystem are linked to the social dynamics of a recreational fisher community. Simulations capture the interaction and dynamic feedback between the two systems and how these affect fish stocks and fisher compliance under centralized and decentralized management approaches. The analysis reveals the complex nature of how system-level dynamics emerge from localized individual-level behaviors. The energetics and ecology of the reefs three trophic levels are modeled: photosynthetic turf algae grows; herbivorous fish graze while schooling and avoiding predation; and roaming piscivores hunt herbivores and patrol the reef edge. With the functional reef system in place, the dynamics of recreational fishermen on the reef are modeled under various personal, environmental, regulatory and social constraints. Simple individual behaviors give rise to the more complex ecological phenomena of fish schooling, carrying capacity, and population cycles, and the sociological phenomena of resource depletion, diffusion of information and cooperation. In an open access fishery, the decline in fish populations creates negative feedback on fishing effort by damping enthusiasm and the number of fishing trips to the reef, thereby regulating fishing effort. In a recreational fishery with centralized management where enforcement agents arrest illegal fishers, the regulatory cost burden of enforcement can be leveraged by enhancing communication (and in turn compliance) among fishers, especially if news of enforcement actions is publicized. In a recreational fishery with community-based management where fishers have the choice to form self-organized coalitions to establish and enforce catch restrictions, the resource dilemma associated with overfishing can be overcome under certain conditions.

Indexing (details)


Subject
Ecology;
Geography;
Oceanography;
Aquaculture;
Fish production;
Recreation
Classification
0329: Ecology
0366: Geography
0416: Oceanography
0792: Aquaculture
0792: Fish production
0814: Recreation
Identifier / keyword
Social sciences; Biological sciences; ABM; Agent-based simulation; Compliance; Cooperation; Coral reef fishery; Coral reefs; Ecological; Fisheries; Recreational fishery; Social dynamics
Title
Agent -based simulation of a recreational coral reef fishery: Linking ecological and social dynamics
Author
Shafer, Jennifer L.
Number of pages
198
Publication year
2007
Degree date
2007
School code
0085
Source
DAI-A 68/11, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9780549324331
Advisor
Ridgley, Mark
University/institution
University of Hawai'i at Manoa
University location
United States -- Hawaii
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
3288298
ProQuest document ID
304849590
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/304849590
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