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1.
Oecologia ; 189(4): 851-861, 2019 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-30382388

RESUMEN

Space and environment are fundamental in influencing the community structure. However, their relative influences vary according to species' biological characteristics. Here we test whether differences in life-history traits mainly linked to dispersal abilities influence bat, rodent and marsupial beta diversity along spatial and environmental gradients. We expect bat beta diversity to be weakly related with space in comparison to dispersal-limited rodents and marsupials. Using data from communities distributed along the Atlantic Forest of South America, we calculated the total beta diversity and its turnover and nestedness components for each group. We estimated the strength of correlation of beta diversity and its components along spatial and environmental gradients, comparing their importance within and between groups. Space had the higher influence on rodent and marsupial beta diversity. For bats, both gradients influenced similarly their community composition. Between taxa, the influence of these gradients did not differ for rodents and marsupials, while bats presented a stronger relationship with environment compared to non-volant small mammals. Also, all groups presented a similar influence of the spatial gradients on their community structure, despite their differences in dispersal abilities. Our results suggest that differences in biological characteristics partially influence the community structure of these mammals, with their responses along space likely reflecting similar biogeographical dynamics affecting their distribution. Overall, our results improve the understanding of the processes structuring these communities, highlighting the benefits of comparative analyses within a beta diversity perspective to better understand the influence of multiple processes on the community assembly along geographical gradients.


Asunto(s)
Quirópteros , Marsupiales , Animales , Biodiversidad , Bosques , Mamíferos , Roedores , América del Sur
2.
Acta amaz ; 47(1): 79-82, jan. -mar. 2017. ilus, map
Artículo en Inglés | LILACS, VETINDEX | ID: biblio-1455330

RESUMEN

Roosts are a key part of bat species' life stories. Information on roost use enables us to understand the biological processes underlying bat ecology and is crucial with regard to the natural-roost loss and environmental pressures related to habitat destruction that has been considered as a threat affecting bat conservation. The aim of this study was to collect new data on the diurnal artificial-roost use by bats in a landscape from the southern Amazon. We observed bat species roosting at an abandoned house in a highly fragmented ecotone between the Amazon and Cerrado biomes. We observed one Trachops cirrhosus individual roosting in physical contact with one Phyllostomus hastatus. One year later, we noticed a compositional change at this roost, in which we found a large colony of Pteronotus parnellii. These findings may shed light on the potential flexibility of the roosting requirements of these species in such landscapes. Moreover, this is one of the first records of the use of human constructions by P. parnelli in such fragmented landscapes, a bat species that until recently was thought of as being associated only with well-preserved natural roosts.


Abrigos desempenham um papel importante na história de vida dos morcegos. Informações sobre sua utilização possibilitam a compreensão dos processos biológicos associados à sua ecologia e são cruciais considerando que a perda de abrigos naturais e que as pressões ambientais relacionadas à descaracterização dos ecossistemas são ameaças para a conservação deste grupo. O objetivo desde estudo foi coletar novos dados sobre a utilização diurna de abrigos artificiais por espécies morcegos em uma região ao sul da Amazônia. Nós observamos espécies de morcegos abrigando uma casa abandonada em uma região ecotonal entre os biomas Amazônia e Cerrado. Neste local, observamos um indivíduo de Trachops cirrhosus em contato físico com um indivíduo de Phyllostomus hastatus. Após um ano, observamos uma mudança neste abrigo, no qual uma colônia de Pteronotus parnellii foi observada. Estes registros podem lançar luz sobre a possível plasticidade destas espécies com relação às suas necessidades para a utilização de abrigos nestas paisagens. O registro trazido aqui é um dos primeiros sobre a utilização de construções humanas por P. parnellii, uma espécie comumente associada a abrigos naturais e bem preservados.


Asunto(s)
Animales , Vivienda para Animales , Fenómenos Ecológicos y Ambientales , Quirópteros , Ecosistema Amazónico
3.
Biota Neotrop. (Online, Ed. ingl.) ; 16(4): e20160231, 2016.
Artículo en Inglés | LILACS-Express | LILACS | ID: biblio-1438213

RESUMEN

Bats of the Phyllostomidae family exhibit different reproductive patterns in Neotropical regions and the strategy adopted depends on the regional climate. Here we studied the reproductive biology of Artibeus fimbriatus at the southern limit of their distribution in Brazil. This region has no rainy season, and the climate is characterized by high temperatures and variable photoperiods. We examined 129 A. fimbriatus females over several months, and used histological procedures where necessary in order to determine whether bats were pregnant. Females exhibited a long reproductive period and were pregnant from June until February. The reproduction events were found to be dependent on the photoperiod, but independent of annual accumulated precipitation. Our results show that at the southern limit of their distribution, A. fimbriatus exhibit seasonal-dependent reproductive patterns, with parturition events occurring during spring and summer, in which the days are longer and temperature is warmer.


Os morcegos Phyllostomidae apresentam diferentes padrões reprodutivos no Neotropico e a estratégia adotada depende do clima regional. Neste trabalho nós estudamos a biologia reprodutiva de A. fimbriatus no Brasil, na região que determina o limite sul de sua distribuição geográfica, onde não há estação chuvosa e o clima é caracterizado por variações na temperatura e fotoperíodo. Nós examinamos 129 fêmeas de A. fimbriatus e utilizamos procedimentos histológicos, quando necessário, para classificar as fêmeas como prenhe ao longo dos meses. As fêmeas exibem um longo período reprodutivo e estão grávidas de junho até fevereiro. Nossos resultados mostram que as fêmeas de A. fimbriatus apresentam uma estratégia reprodutiva que é dependente da sazonalidade com os nascimentos ocorrendo quando os dias são mais longos e a temperatura é maior (primavera e verão), no limite sul de sua distribuição geográfica.

4.
Stud Health Technol Inform ; 216: 251-4, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26262049

RESUMEN

This is a methodological study and technological production that aims to describe the development of a computerized system of nursing care quality indicators for the Intensive Care Unit. The study population consisted of a systems analyst and fifteen critical care nurses. For the development of the system we adopted some of the best practices of the Unified Process methodology using the Unified Modeling Language and the programming language Java Enterprise Edition 7. The system consists of an access menu with the following functions: Home (presents general information), New Record (records the indicator), Record (record search), Census (add information and indicators of the patient), Report (generates report of the indicators) and Annex (accesses the Braden Scale). This information system allows for measurement of the quality of nursing care and to evaluate patient safety in intensive care unit by monitoring quality indicators in nursing.


Asunto(s)
Enfermería de Cuidados Críticos/normas , Unidades de Cuidados Intensivos/normas , Atención de Enfermería/normas , Registros de Enfermería/normas , Seguridad del Paciente/normas , Indicadores de Calidad de la Atención de Salud/organización & administración , Brasil , Enfermería de Cuidados Críticos/clasificación , Atención de Enfermería/clasificación , Informática Aplicada a la Enfermería/normas
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