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Titolo:
Empirical validation of a method for umbrella species selection
Autore:
Fleishman, E; Blair, RB; Murphy, DD;
Indirizzi:
Stanford Univ, Dept Biol Sci, Ctr Conservat Biol, Stanford, CA 94305 USA Stanford Univ Stanford CA USA 94305 onservat Biol, Stanford, CA 94305 USA Miami Univ, Dept Zool, Oxford, OH 45056 USA Miami Univ Oxford OH USA 45056 iami Univ, Dept Zool, Oxford, OH 45056 USA Univ Nevada, Dept Biol 314, Reno, NV 89557 USA Univ Nevada Reno NV USA 89557 v Nevada, Dept Biol 314, Reno, NV 89557 USA
Titolo Testata:
ECOLOGICAL APPLICATIONS
fascicolo: 5, volume: 11, anno: 2001,
pagine: 1489 - 1501
SICI:
1051-0761(200110)11:5<1489:EVOAMF>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
URBAN GRADIENT; RAPID ASSESSMENT; GREAT-BASIN; LAND-USE; CONSERVATION; BIODIVERSITY; MANAGEMENT; BUTTERFLIES; DIVERSITY; RIPARIAN;
Keywords:
birds; broadleaf forest; butterflies; chaparral; ecosystem management; Great Basin; indicator species; land use planning; life history; surrogate taxa; umbrella index; umbrella species;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
74
Recensione:
Indirizzi per estratti:
Indirizzo: Fleishman, E Stanford Univ, Dept Biol Sci, Ctr Conservat Biol, 371 Serra Mall, Stanford, CA 94305 USA Stanford Univ 371 Serra Mall Stanford CA USA 94305 94305 USA
Citazione:
E. Fleishman et al., "Empirical validation of a method for umbrella species selection", ECOL APPL, 11(5), 2001, pp. 1489-1501

Abstract

Empirical validation that putative umbrella species protect many co-occurring species is rare. Using 10 sets of data, representing two taxonomic groups and three ecoregions, we tested the effectiveness of a recently developed index for selection of umbrella species. We also tested whether species identified with the index were more effective umbrellas than species selected at random, evaluated whether sample size and intensity affect selection of umbrella species, and examined whether the index could identify cross-taxonomic umbrellas in a single ecoregion. Conserving all locations with at least one umbrella species would protect the vast majority of each assemblage. A more realistic scenario, conservation of subsets of locations with relatively high numbers of umbrella species, generally would protect greater than or equal to0.75 of each assemblage. Randomly selected sets of species often required that more locations be designated for protection than did setsselected using the umbrella index. The umbrella index tended to identify fewer locations that offered an equivalent level of species protection. Sampling intensity affected which species were identified as umbrellas, but notthe proportion of species that would be protected. Umbrella species were no more effective than randomly selected species for cross-taxonomic applications; nonetheless, neither group was significantly less effective than same-taxon umbrellas. Particularly when selection of protected areas is not highly constrained, it may indeed be feasible to identify effective umbrella species. Unqualified utility of the umbrella index or umbrella species concept, however, is not supported by this study.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/01/21 alle ore 12:22:39