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Habitats of ten demersal species in the Gulf of Lions and potential implications for spatial management ArchiMer
Morfin, Marie; Bez, Nicolas; Fromentin, Jean-marc.
An improved knowledge of habitat utilization by demersal species is a pre-requisite for their spatial management. Based on scientific survey data collected over the period 1994-2010, the present study investigates relationships between 4 environmental factors and 10 demersal species in the Gulf of Lions (northwestern Mediterranean Sea). Generalized linear models provided statistically satisfying results in terms of both model explanatory and predictive powers. The 'biological zone' factors, based on the percentage of light penetration to the sea bottom and bottom temperature, were the most important factors, while sediments and benthic macrofauna were only significant for a few species. The type of associations varied among species, resulting in different...
Tipo: Text Palavras-chave: Fish habitat; Marine living resources; Mediterranean; Generalized linear models; Model selection; Marine Protected Area; MARXAN.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00334/44502/45846.pdf
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Policy Research Using Agent-Based Modeling to Assess Future Impacts of Urban Expansion into Farmlands and Forests Ecology and Society
Guzy, Michael R; Oregon State University, Department of Biological and Ecological Engineering; michael.guzy@oregonstate.edu; Smith, Courtland L; Oregon State University, Department of Anthropology; csmith@oregonstate.edu; Bolte, John P; Oregon State University, Department of Biological and Ecological Engineering; boltej@engr.orst.edu; Hulse, David W; University of Oregon, Department of Landscape Architecture; dhulse@uoregon.edu; Gregory, Stanley V; Oregon State University, Department of Fisheries and Wildlife; stanley.gregory@oregonstate.edu.
The expansion of urban land uses into farmlands and forests requires an assessment of future ecological impacts. Spatially explicit agent-based models can represent the changes in resilience and ecological services that result from different land-use policies. When modeling complex adaptive systems, both the methods used to interpret results and the standards of rigor used to judge adequacy are complicated and require additional research. Recent studies suggest that it would be appropriate to use these models as an extension of exploratory analysis. This type of analysis generates ensembles of alternate plausible representations of future system conditions. User expertise steers interactive, stepwise system exploration toward inductive reasoning about...
Tipo: Peer-Reviewed Reports Palavras-chave: Social-ecological systems; Agricultural-urban interface; Fish habitat; Ecosystem health; Urban containment policies; Agent-based models.
Ano: 2008
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Spatial Complexity, Resilience, and Policy Diversity: Fishing on Lake-rich Landscapes Ecology and Society
Carpenter, Stephen R; University of Wisconsin-Madison; srcarpen@wisc.edu; Brock, William A; University of Wisconsin-Madison; wbrock@ssc.wisc.edu.
The dynamics of and policies governing spatially coupled social-ecological mosaics are considered for the case of fisheries in a lake district. A microeconomic model of households addresses agent decisions at three hierarchic levels: (1) selection of the lake district from among a larger set of alternative places to live or visit, (2) selection of a base location within the lake district, and (3) selection of a portfolio of ecosystem services to use. Ecosystem services are represented by dynamics of fish production subject to multiple stable domains and trophic cascades. Policy calculations show that optimal policies will be highly heterogeneous in space and fluid in time. The diversity of possible outcomes is illustrated by simulations for a hypothetical...
Tipo: Peer-Reviewed Reports Palavras-chave: Angler dynamics; Fish habitat; Inclusive value; Lake; Lake management; Landscape ecology; Multiple attractors; Natural resource policy; Resilience; Social-ecological system; Spatial dynamics; Sport fishery; Sport fishery; Sport fishery management.
Ano: 2004
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