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	Provedor de dados AgEcon (2) ArchiMer (1) Neotropical Ichthyology (1) Autor Bergstrom, John C. (2) Bhat, Gajanan (2) Bowker, James Michael (2) Agostinho,Ângelo Antonio (1) Bockel, Thomas (1) Carpentier, Liliane (1) Cordell, H. Ken (1) Garcia, Jessica (1) Júlio Júnior,Horácio Ferreira (1) Pavanelli,Carla Simone (1) Pelletier, Dominique (1) Roman, William (1) Tós,Claudenice Dei (1) Mais... Palavra-chave Ecoregion (4) Resource /Energy Economics and Policy (2) Benefit Transfer (1) Biodiversity (1) Gradient forest (1) Invasive species (1) Marine biodiversity (1) New Caledonia (1) Recreation (1) Reservoir Impacts (1) Scale-dependency (1) Sete Quedas Falls (1) Species turnover (1) Travel Cost Method (1) Travel cost method (1) Truncated poisson model (1) Underwater video (1) Β‐diversity (1) Mais... Tipo do documento Working or Discussion Paper (2) Info:eu-repo/semantics/article (1) Text (1) Ano 2018 (1) 2009 (1) 1997 (1) 1996 (1) País United States (2) Brazil (1) France (1) Idioma Inglês (4)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última A massive invasion of fish species after eliminating a natural barrier in the upper rio Paraná basin Neotropical Ichthyology Júlio Júnior,Horácio Ferreira; Tós,Claudenice Dei; Agostinho,Ângelo Antonio; Pavanelli,Carla Simone. Based on long-term studies in the upper rio Paraná basin, in addition to a broad review of literature and other information, we were able to identify 33 species of native fishes in the lower rio Paraná basin that successfully colonized the upper rio Paraná after Itaipu impoundment, that flooded the natural geographic barrier constituted by the Sete Quedas Falls. These species belong to six Orders, encompassing two of Myliobatiformes, six of Characiformes, 17 of Siluriformes, six of Gymnotiformes, one of Perciformes, and one of Pleuronectiformes. Extensive remarks regarding each species, including their influence upon the native assemblage, in addition to comments on other non-indigenous species, are also provided. We conclude that, in spite of its... Tipo: Info:eu-repo/semantics/article Palavras-chave: Invasive species; Biodiversity; Reservoir Impacts; Ecoregion; Sete Quedas Falls. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000400021 A PROPOSED METHODOLOGY FOR ESTIMATING ECOREGIONAL VALUES FOR OUTDOOR RECREATION IN THE UNITED STATES AgEcon Bhat, Gajanan; Bergstrom, John C.; Bowker, James Michael; Cordell, H. Ken. This paper provides a methodology for the estimation of recreational demand functions and values using an ecoregional approach. Ten ecoregions in the continental US were defined based on similarly functioning ecosystem characters. The individual travel cost method was employed to estimate the recreational demand functions for activities such as motorboating and waterskiing, developed and primative camping, coldwater fishing, sightseeing and pleasure driving, and big game hunting for each ecoregions. Estimates of per trip net income value range from $12.93 to $218.38 while per day estimates range from $4.31 to $109.19. While our ecoregional approach differs conceptually from previous work, our results appear consistent with the previous travel cost... Tipo: Working or Discussion Paper Palavras-chave: Recreation; Ecoregion; Travel cost method; Truncated poisson model; Resource /Energy Economics and Policy. Ano: 1996 URL: http://purl.umn.edu/16686 AN ECOREGIONAL APPROACH TO BENEFIT TRANSFER AgEcon Bhat, Gajanan; Bergstrom, John C.; Bowker, James Michael. This study has examined the transferability of consumer's surplus estimates (fixed value transfer) and transferability of benefit functions from the Southern Appalachian Mountain ecoregion to a local site within the ecoregional level. Given data used in this study, it is found that transferability of benefit estimated are possible in 50% of the activities, whereas benefit functions can be transferred in all of the activities considered in this study. The results are compared to previous studies. Different problems in testing benefit estimates transfer are discussed. Tipo: Working or Discussion Paper Palavras-chave: Benefit Transfer; Ecoregion; Travel Cost Method; Resource /Energy Economics and Policy. Ano: 1997 URL: http://purl.umn.edu/16647 Scale-dependency of the environmental influence on fish β-diversity: Implications for ecoregionalization and conservation ArchiMer Garcia, Jessica; Pelletier, Dominique; Carpentier, Liliane; Roman, William; Bockel, Thomas. Aim To determine the ecoregions (spatial marine areas with similar environmental and physical conditions associated with relatively homogeneous fish assemblages) for shallow reef fish assemblages based on predictive models of beta diversity (β‐diversity) that account for both large‐scale environmental factors and local habitat characteristics. We assessed the influence of a spatial scale to rank the importance of these factors. Location New Caledonian (south‐west Pacific Ocean, 17–24° S, 158–172° W) Exclusive Economic Zone, Coral Sea Marine Park. Taxon Fish. Methods Fish and habitat data that were collected at 13 sites around New Caledonia using unbaited rotating underwater video (285 sampling stations) were analysed. Gradient forest modelling was used to... Tipo: Text Palavras-chave: Β‐diversity; Ecoregion; Gradient forest; Marine biodiversity; New Caledonia; Scale-dependency; Species turnover; Underwater video. Ano: 2018 URL: https://archimer.ifremer.fr/doc/00455/56668/58629.pdf Registros recuperados: 4 Primeira ... 1 ... Última

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