Use of simulated annealing for identifying essential fish habitat in a multispecies context

被引:40
作者
Cook, RR [1 ]
Auster, PJ [1 ]
机构
[1] Univ Connecticut, Natl Undersea Res Ctr, Groton, CT 06340 USA
关键词
continental shelf; marine fish conservation; species representation;
D O I
10.1111/j.1523-1739.2005.00613.x
中图分类号
X176 [生物多样性保护];
学科分类号
090705 ;
摘要
Essential fish habitat (EFH) is defined under US. federal law, which mandates its protection. Current single-species approaches to identifying EFH for suites of managed species have resulted in areas designated for protection that are so large that protecting fish habitat has been difficult in the context of fishery management. We evaluated the potential for simulated annealing, a type of mathematical optimization, as a tool for simultaneously identifying EFH for multiple species in four ecological regions of the eastern continental shelf of the United States. Data were obtained from a shelf-wide trawl survey with site-specific abundance information spanning 37 years. The data were averaged within units of a sampling grid with 10-minute squares. We used computer software with an objective function, that includes a term, for weighting the boundary length of selected sampling units and thereby identifies solutions that meet specific targets for representation under varying degrees of spatial aggregation. We defined representation as a percentage of the cumulative sampled abundance of individual species and examined the effects of these target values and spatial constraints on total (sea-surface) area and boundary length of solution sets. We also evaluated the algorithm for its ability to select areas where juveniles occurred at high densities as a proxy for habitat value. Annealing solutions covered less total area than would the combined habitats of individual species that capture the same proportion of population abundance. For most species in most solutions, high-density areas were selected in higher proportions to their relative abundance in a region and solutions contained less total habitat area and smaller boundary lengths. Additionally, sampling units were distributed among two or snore discrete localities versus a single location for the same target level of representation. We suggest that simulated annealing is a viable tool for EFH planning with the potential for identifying more spatially conservative habitat areas for protection than a single-species approach.
引用
收藏
页码:876 / 886
页数:11
相关论文
共 42 条
  • [1] Airamé S, 2003, ECOL APPL, V13, pS170
  • [2] [Anonymous], 1993, Large marine ecosystems: Stress, mitigation, and sustainability
  • [3] [Anonymous], PRIORITY AREAS ANAL
  • [4] Distribution changes and abundance of northern cod (Gadus morhua), 1981-1993
    Atkinson, D. B.
    Rose, G. A.
    Murphy, E. F.
    Bishop, C. A.
    [J]. CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES, 1997, 54 : 132 - 138
  • [5] Auster Peter J., 1996, Reviews in Fisheries Science, V4, P185
  • [6] Auster Peter J., 2000, Northeastern Naturalist, V7, P419, DOI 10.2307/3858522
  • [7] PATTERNS OF MICROHABITAT UTILIZATION BY MOBILE MEGAFAUNA ON THE SOUTHERN NEW-ENGLAND (USA) CONTINENTAL-SHELF AND SLOPE
    AUSTER, PJ
    MALATESTA, RJ
    LAROSA, SC
    [J]. MARINE ECOLOGY PROGRESS SERIES, 1995, 127 (1-3) : 77 - 85
  • [8] Variation in habitat use by juvenile Acadian redfish, Sebastes fasciatus
    Auster, PJ
    Lindholm, J
    Valentine, PC
    [J]. ENVIRONMENTAL BIOLOGY OF FISHES, 2003, 68 (04) : 381 - 389
  • [9] Fish species and community distributions as proxies for seafloor habitat distributions: the Stellwagen Bank National Marine Sanctuary example (Northwest Atlantic, Gulf of Maine)
    Auster, PJ
    Joy, K
    Valentine, PC
    [J]. ENVIRONMENTAL BIOLOGY OF FISHES, 2001, 60 (04) : 331 - 346
  • [10] Auster PJ, 1998, AM FISH S S, V22, P150