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| Forys, Elizabeth A; Eckerd College; forysea@eckerd.edu; Allen, Craig R; University of Nebraska; allencr@unl.edu. |
| Sprawling development can affect species composition by increasing the rate of invasion by non-native species, and decreasing the persistence of native species. This paper briefly reviews the scientific literature on the impacts of sprawl on biological diversity, with specific emphasis on the influence of sprawl on non-native species richness. We then explore the relationship between sprawl and biodiversity using a data set of ant species collected from 46 habitat patches located in the increasingly suburbanized Florida Keys, USA. We quantified sprawl as the proximity of roads and amount of development surrounding a habitat patch. Using bait transects, we identified 24 native and 18 non-native species of ants. Neither the overall number of native species... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Extinctions; Exurban development; Florida; Invasions; Nestedness; Sprawl. |
| Ano: 2005 |
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| Serrano, J.M.; Berlanga-Robles, C.A.; Ruiz-Luna, A.. |
| Amphibian diversity and distribution patterns in Sinaloa state (north-western Mexico) were assessed from the Global Amphibian Assessment database (GAA-2010). A geographic information system (GIS) was used to evaluate diversity based on distribution maps of 41 species, associated with environmental data. The highest α and γ-diversities were identified in the south-eastern portion of the state, in mountain zones with a warm sub-humid climate, whereas the greatest β-diversity (multiplicative formulation) was aggregated in patches in the western portion of the state in mountains with temperate climates. A cluster analysis and Mantel test showed a strong association of Sorensen’s dissimilarity (additive formulation of β-diversity) with climate and soil moisture... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Α-diversity; Β-diversity; Γ-diversity; Distribution maps; Nestedness; Turnover; 42.82. |
| Ano: 2014 |
URL: http://www.repository.naturalis.nl/record/475290 |
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| Winemiller,Kirk O.; Taphorn,Donald C.; Kelso-Winemiller,Leslie C.; López-Delgado,Edwin O.; Keppeler,Friedrich W.; Montaña,Carmen G.. |
| ABSTRACT We investigated spatial and seasonal variation of fish assemblages of Caño Maraca, a creek in Venezuela’s Western Llanos, a region with strong wet-dry seasonality. Fishes were surveyed over a 19-year period at three sites along the longitudinal gradient: a headwater site with a narrow channel, a middle site with shallow channels traversing a seasonal wetland, and a lower site where the channel has higher banks. Assemblage composition and presence of species with juveniles and various life history strategies were compared during wet and dry seasons. Overall, fish species richness was lowest at the headwater site and highest at the downstream site. During the wet season, however, species richness is greatest at the middle site, a pattern associated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dispersal; Fluvial gradient; Freshwater fish; Neotropics; Nestedness. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000400217 |
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| Sarmento,Raissa; Alves-Costa,Cecília P.; Ayub,Adriana; Mello,Marco A.R.. |
| Community-level network studies suggest that seed dispersal networks may share some universal properties with other complex systems. However, most of the datasets used so far in those studies have been strongly biased towards temperate birds, including not only dispersers, but also seed predators. Recent evidence from multi-taxon networks suggests that seed dispersal networks are not all alike and may be more complex than previously thought. Here, we used network theory to evaluate seed dispersal in a strongly impacted Atlantic Forest fragment in northeastern Brazil, where bats and birds are the only extant dispersers. We hypothesized that the seed dispersal network should be more modular then nested, and that the dispersers should segregate their services... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diet overlap; Frugivory; Modularity; Nestedness; Networks. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702014000300006 |
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| Soares,Caio J. R. S.; Sampaio,Mauricio B.; Santos-Filho,Francisco S.; Martins,Fernando R.; Santos,Flavio A. M. dos. |
| ABSTRACT Patterns of species diversity are essential to understand community structure. We aimed to determine species diversity and patterns of beta diversity in different spatial scales. We sampled three thousand individuals between the coordinates 22°10'S to 22°16'S and 47°47'W to 48°00'W to assess species diversity in three spatial scales (maximum distances of 80 m, 1,400 m, and 12,000 m), using the point-centered-quarter method. We partitioned gamma diversity into alpha and beta components. Beta diversity was partitioned into dissimilarities produced by spatial species turnover and nestedness. The contribution of beta diversity to gamma diversity was greater than that of alpha diversity in all scales, although the patterns of species diversity were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Beta diversity; Biogeography; Disturbance; Diversity partition; Local spatial scale; Nestedness; Phytogeography; Spatial species turnover. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000100009 |
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| Petsch, Danielle Katharine; Ragonha, Flávio Henrique; Gimenez, Bárbara Carolina Garcia; Barboza, Luís Gabriel Antão; Takeda, Alice Michiyo. |
| We tested the hypothesis that the contribution of the nestedness component is higher in environments with more similar features (lentic or lotic), whereas the contribution of the turnover component is higher in environments with more dissimilar features (lotic vs. lentic). To this end, we partitioned beta diversity of the Oligochaeta community into 12 environments of the Upper Paraná River floodplain. We recorded 986 individuals of 17 taxa. Through Redundancy Analysis, we observed a differentiation between lentic and lotic habitats both by environmental features as species composition. Our hypothesis was partially supported, because in environments with more similar hydrological characteristics, we observed a greater contribution of the nestedness... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ciências Biológicas turnover; Nestedness; Lentic; Lotic; Richness Ecologia. |
| Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/21738 |
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