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  • 1
    In: Ecology, Wiley, Vol. 101, No. 11 ( 2020-11)
    Abstract: Biological invasion is one of the main threats to native biodiversity. For a species to become invasive, it must be voluntarily or involuntarily introduced by humans into a nonnative habitat. Mammals were among first taxa to be introduced worldwide for game, meat, and labor, yet the number of species introduced in the Neotropics remains unknown. In this data set, we make available occurrence and abundance data on mammal species that (1) transposed a geographical barrier and (2) were voluntarily or involuntarily introduced by humans into the Neotropics. Our data set is composed of 73,738 historical and current georeferenced records on alien mammal species of which around 96% correspond to occurrence data on 77 species belonging to eight orders and 26 families. Data cover 26 continental countries in the Neotropics, ranging from Mexico and its frontier regions (southern Florida and coastal‐central Florida in the southeast United States) to Argentina, Paraguay, Chile, and Uruguay, and the 13 countries of Caribbean islands. Our data set also includes neotropical species (e.g., Callithrix sp., Myocastor coypus , Nasua nasua) considered alien in particular areas of Neotropics. The most numerous species in terms of records are from Bos sp. ( n = 37,782), Sus scrofa ( n = 6,730), and Canis familiaris ( n = 10,084); 17 species were represented by only one record (e.g., S yncerus caffer, Cervus timorensis, Cervus unicolor, Canis latrans ). Primates have the highest number of species in the data set ( n = 20 species), partly because of uncertainties regarding taxonomic identification of the genera Callithrix, which includes the species Callithrix aurita, Callithrix flaviceps, Callithrix geoffroyi, Callithrix jacchus, Callithrix kuhlii, Callithrix penicillata , and their hybrids. This unique data set will be a valuable source of information on invasion risk assessments, biodiversity redistribution and conservation‐related research. There are no copyright restrictions. Please cite this data paper when using the data in publications. We also request that researchers and teachers inform us on how they are using the data.
    Type of Medium: Online Resource
    ISSN: 0012-9658 , 1939-9170
    URL: Issue
    RVK:
    Language: English
    Publisher: Wiley
    Publication Date: 2020
    detail.hit.zdb_id: 1797-8
    detail.hit.zdb_id: 2010140-5
    SSG: 12
    Location Call Number Limitation Availability
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  • 2
    In: Ecography, Wiley, Vol. 43, No. 10 ( 2020-10), p. 1560-1570
    Abstract: Sites with high environmental suitability for species’ occurrence, in terms of abiotic conditions, may hold populations with higher local abundances by increasing reproductive and survival rates and decreasing extinction rate. Interspecific competition, however, may affect this relationship. Here we tested the hypothesis that local abundance of the gray slender opossum Marmosops incanus is affected by the local richness of potential competitors and environmental suitability derived from ecological niche models (ENMs). We also discuss the ability of distinct modelling methods to predict species’ abundance. We compiled occurrence records and information about M. incanus ’ relative abundance from museums and published articles. Environmental suitability was derived from five algorithms using seven environmental predictors. To assess our hypothesis, we chose the best statistical models among generalised linear models and quantile regressions, and then tested whether the effects of richness of competitors on local abundance are stronger under highly suitable conditions. We found that environmental suitability given by presence‐only methods are positively related to the maximum abundance of M. incanus . That is, species’ local abundance is low when suitability is low but can be either low or high when suitability is high. The richness of competitors, in turn, explains the abundance variation within sites with high environmental suitability. We strongly recommend that the relationship between abundance and suitability must be carefully interpreted when using ENMs to predict species’ distribution because biotic interactions can be the main driver of local abundance within highly suitable environments.
    Type of Medium: Online Resource
    ISSN: 0906-7590 , 1600-0587
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2020
    detail.hit.zdb_id: 2024917-2
    detail.hit.zdb_id: 1112659-0
    SSG: 12
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  • 3
    In: Journal of Biogeography, Wiley, Vol. 50, No. 10 ( 2023-10), p. 1749-1762
    Abstract: A expansão da distribuição geográfica depende de processos ecológicos e evolutivos que podem dificultar adaptações locais nas populações periféricas. Este estudo investiga os padrões espaciais da variabilidade intraespecífica de características cranianas ao longo da distribuição de um marsupial da Mata Atlântica brasileira, tendo como objetivo responder se a distância da borda da distribuição e a adequabilidade ambiental explicam a variação geográfica da variabilidade morfológica nesta espécie. Localização Mata Atlântica, Brasil. Taxon Marmosops incanus (Didelphimorphia, Didelphidae). Métodos O estudo analisou espécimes adultos depositados nas principais coleções biológicas do sudeste do Brasil. A variabilidade morfológica dentro das populações foram caracterizadas por 13 medidas lineares do crânio, utilizando uma abordagem multivariada. A adequabilidade ambiental para a ocorrência da espécie foi estimada por Modelos de Nicho Ecológico utilizando variáveis climáticas e a produtividade local como preditoras e três diferentes métodos de modelagem. A distância da borda da distribuição foi calculada com base na distância linear mínima entre as populações e o limite da distribuição mais próximo. Os melhores modelos lineares que explicavam a variação da variabilidade morfológica foram selecionados com base no critério de informação de Akaike. Resultados A extensão da variabilidade morfológica de M. incanus está positivamente correlacionada com a integração morfológica e aumenta com a adequabilidade ambiental local e a distância da borda da distribuição. No entanto, a relação entre a variabilidade morfológica e a adequabilidade ambiental depende do método de modelagem de nicho. Conclusões As condições ambientais desfavoráveis restringem a variabilidade morfológica intraespecífica em M. incanus e podem dificultar a adaptação local das populações periféricas que vivem em ambientes pouco favoráveis para a sua ocorrência. Este estudo destaca o papel importante da localização geográfica das populações na variabilidade fenotípica local, discutindo os efeitos da borda da distribuição geográfica na adaptação local e suas possíveis consequências para a expansão da distribuição. Palavras‐chave adaptação local, Didelphidae, expansão da distribuição geográfica, integração fenotípica, Modelo de Distribuição de Espécies, Modelo de Nicho Ecológico, morfometria, mamíferos neotropicais, Mata Atlântica, variação intraespecífica
    Type of Medium: Online Resource
    ISSN: 0305-0270 , 1365-2699
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 2020428-0
    detail.hit.zdb_id: 188963-1
    SSG: 12
    Location Call Number Limitation Availability
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