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• W2104114238 abstract "MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 257:275-289 (2003) - doi:10.3354/meps257275 What constitutes essential nursery habitat for a marine species? A case study of habitat form and function for queen conch Allan W. Stoner* Fisheries Behavioral Ecology Program, Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, 2030 S. Marine Science Drive, Newport, Oregon 97365, USA *Email: al.stoner@noaa.gov ABSTRACT: There is increasing recognition that habitats should be managed as part of fisheries management. It is generally assumed that amount of suitable habitat is linked to production of demersal species and that maps of bottom type will provide the information needed to conserve essential habitats. In this review, a synthesis of nursery habitat is made for Strombus gigas (queen conch), a large, economically important gastropod in the Caribbean region. Juveniles occur on a variety of bottom types over their geographic range. In the Bahamas, nurseries occur in specific locations within large, beds of seagrass, while obvious characteristics of the benthic environment such as seagrass density, depth and sediment type are not good predictors of suitable habitat. Rather, nurseries persist where competent larvae are concentrated by tidal circulation and where settlement occurs selectively. Nursery locations provide for high juvenile growth resulting from macroalgal production not evident in maps of algal biomass, and they provide for low mortality compared with seemingly similar surroundings. Therefore, critical habitats for queen conch juveniles are determined by the intersection of habitat features and ecological processes that combine to yield high rates of recruitment and survivorship. While maps of bottom type are a good beginning for habitat management, they can be traps without good knowledge of ecological processes. A demersal species can occupy different substrata over its geographic range, different life stages often depend upon different bottom types, and specific locations can be more important than particular habitat forms. Habitat management must be designed to conserve habitat function and not just form. Implicit in the concept of Œessential habitat¹ is the fact that expendable habitat exists, and we need to prevent losses of working habitat because of inadequate protection, restoration or mitigation. Key nurseries may represent distinctive or even anomalous conditions. KEY WORDS: Essential fish habitat · Habitat mapping · Habitat management · Seagrass · Recruitment · Strombus gigas Full text in pdf format PreviousNextExport citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 257. Online publication date: August 07, 2003 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2003 Inter-Research." @default.
• W2104114238 created "2016-06-24" @default.
• W2104114238 creator A5056590682 @default.
• W2104114238 date "2003-01-01" @default.
• W2104114238 modified "2023-10-05" @default.
• W2104114238 title "What constitutes essential nursery habitat for a marine species? A case study of habitat form and function for queen conch" @default.
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