29 research outputs found

    Variação geogråfica no período de nidificação do jacaré-paguå, Paleosuchus palpebrosus, no Brasil.

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    O objetivo deste estudo Ă© divulgar os avanços de conhecimento da biologia da reprodução de jacarĂ©-paguĂĄ, Paleosuchus palpebrosus, nos diferentes ambientes da floresta alagada da AmazĂŽnia e nos riachos do entorno do Pantanal. Os resultados apresentados encontram-se alinhados ao Objetivo de Desenvolvimento SustentĂĄvel das NaçÔes Unidas n° 15 - Vida Terrestre, no que diz respeito Ă  sua Meta 15.1.- assegurar a conservação, recuperação e uso sustentĂĄvel de ecossistemas terrestres e de ĂĄgua doce interiores e seus serviços, em especial florestas, zonas Ășmidas, montanhas e terras ĂĄridas, em conformidade com as obrigaçÔes decorrentes dos acordos internacionais (NaçÔes Unidas Brasil, 2022)

    Vegetação e flora.

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    O processo de redução e isolamento da vegetação natural, conhecido como fragmentação de habitat tem consequĂȘncias sobre a estrutura e os processos das comunidades vegetais, que podem ser naturais ou geralmente causados pela ação antrĂłpica e, apesar das implicaçÔes da fragmentação de habitat na manutenção da biodiversidade, muito de seus efeitos de curto, mĂ©dio e longo prazo ainda nĂŁo sĂŁo entendidos. Resultados de estudos em diversos ecossistemas tĂȘm demonstrado que a compreensĂŁo de somente uma ou de poucas caracterĂ­sticas dos fragmentos, nĂŁo Ă© suficiente para entender ou prever como a biodiversidade serĂĄ afetada. É, portanto, essencial a compreensĂŁo dos diversos fatores que podem estar simultaneamente ou em sinergismo sobre a vegetação dos fragmentos tais como o tamanho, a forma, a idade, o uso e a matriz, entre outros

    First report on dung beetles in intra-Amazonian savannahs in Roraima, Brazil

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    This is the first study to address the dung beetle (Coleoptera: Scarabaeidae: Scarabaeinae) diversity in intra-Amazonian savannahs in the state of Roraima, Brazil. Our aim was to survey the dung beetle fauna associated with these savannahs (regionally called 'lavrado'), since little is known about the dung beetles from this environment. We conducted three field samples using pitfall traps baited with human dung in savannah areas near the city of Boa Vista during the rainy seasons of 1996, 1997, and 2008. We collected 383 individuals from ten species, wherein six have no previous record in intra-Amazonian savannahs. The most abundant species were Ontherus appendiculatus (Mannerheim, 1829), Canthidium aff. humerale (Germar, 1813), Dichotomius nisus (Olivier, 1789), and Pseudocanthon aff. xanthurus (Blanchard, 1846). We believe that knowing the dung beetles diversity associated with the intra-Amazonian savannahs is ideal for understanding the occurrence and distribution of these organisms in a highly threatened environment, it thus being the first step towards conservation strategy development

    Amazonia Camtrap: a data set of mammal, bird, and reptile species recorded with camera traps in the Amazon forest.

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    Abstract : The Amazon forest has the highest biodiversity on Earth. However, information on Amazonian vertebrate diversity is still deficient and scatteredacross the published, peer-reviewed, and gray literature and in unpublishedraw data. Camera traps are an effective non-invasive method of surveying vertebrates, applicable to different scales of time and space. In this study, we organized and standardized camera trap records from different Amazonregions to compile the most extensive data set of inventories of mammal,bird, and reptile species ever assembled for the area. The complete data setcomprises 154,123 records of 317 species (185 birds, 119 mammals, and13 reptiles) gathered from surveys from the Amazonian portion of eightcountries (Brazil, Bolivia, Colombia, Ecuador, French Guiana, Peru,Suriname, and Venezuela). The most frequently recorded species per taxawere: mammals:Cuniculus paca (11,907 records); birds: Pauxi tuberosa (3713 records); and reptiles:Tupinambis teguixin(716 records). The infor-mation detailed in this data paper opens up opportunities for new ecological studies at different spatial and temporal scales, allowing for a moreaccurate evaluation of the effects of habitat loss, fragmentation, climatechange, and other human-mediated defaunation processes in one of themost important and threatened tropical environments in the world. The data set is not copyright restricted; please cite this data paper when usingits data in publications and we also request that researchers and educator sinform us of how they are using these data

    Byrsonima crassifolia

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    Angiosperm

    Byrsonima crassifolia

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    Angiosperm

    Byrsonima crassifolia

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    Angiosperm

    Byrsonima crassifolia

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    Angiosperm
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