quinta-feira, 31 de julho de 2014
Acta Theriologica vai virar Mammal Research
O periódico Acta Theriologica vai mudar de nome. O novo nome será Mammal Research (coincidentemente muito parecido com o nome do blog - mas antes que alguém pergunte, não foi de propósito). A proposta é publicar boas revisões no primeiro fascículo, em 2015, já com o novo nome, por isso a comissão editorial e os editores associados estão buscando artigos dessa linha para publicação. Para quem tem algo de revisão, ou mesmo trabalhos práticos, é uma boa opção no momento.
quarta-feira, 30 de julho de 2014
Journals: Revista de Biología Tropical
Revista de Biología Tropical
- Qualis
CAPES: B1 (Biodiversidade), B4 (Ciências Biológicas I), B5
(Ciências Biológicas II).
- Taxa
de Publicação: Não há.
-
Idiomas: Inglês, Espanhol.
-
Disponibilidade: Acesso gratuito a todos os artigos na home
page.
-
Submissão: Por e-mail direto ao corpo editorial.
Publicado pela Universidad de Costa Rica, a Revista
de Biología Tropical (International
Journal of Tropical Biology and Conservation) considera para publicação
manuscritos em todos os campos teóricos e aplicados da biologia tropical e
conservação, com uma preferência por estudos aprofundados de interesse geral,
baseado em amostras significativas, um sólido desenho experimental e uma
análise quantitativa moderna.
Publica estudos nos campos de Biomedicina,
Microbiologia, Ecologia, Invertebrados Aquáticos, Invertebrados Terrestres,
Vertebrados Aquáticos, Vertebrados Terrestres, Botânica, entre outros.
sábado, 26 de julho de 2014
Tafonomía de restos de micromamíferos recuperados del sitio arqueológico Agua de La Mula (Mendoza, Argentina) y su implicancia en la subsistencia humana
FERNÁNDEZ, F.J.; DE SANTIS, L.J.M. 2013. Tafonomía de restos de micromamíferos recuperados del sitio arqueológico Agua de La Mula (Mendoza, Argentina) y su implicancia en la subsistencia humana. Cuadernos del Instituto Nacional de Antropología y Pensamiento Latinoamericano - Series Especiales 1(1):181-195.
Abstract. Micromammal remains from the archaeological sequence of Agua de La Mula (35º22'24,9''S, 68º15'04,2''W, south-central Mendoza, Argentina) are taphonomically studied. The remains (NISP=1026, MNE=1,026, MNI=491) were recovered from the Late Holocene layers (1,600-1,000 years C14 BP). The micromammal assemblages are composed by 10 taxa of rodents, one chiropteran and two marsupials, associated to transitional mosaic of Patagonian steppe and Monte desert environments. The absence of cut marks and the presence of few burned remains recovered from the site would indicate no human consumption. Moreover, the presence of pellets preserved in stratigraphy and light digestive corrosion on some teeth, indicate that the main accumulator agents were probably avian strigiforms. The absence of weathering, rodent marks, hydraulic transport, root action, and diagenesis, suggest a good preservation and a rapid incorporation of the material in the stratigraphic context. However, trampling, sedimentary corrosion and manganese oxide evidences were seen on the micromammal remains, indicating some episodes of humidity inside the cave. Finally, this information provided here would help us to explain the scope of the resource intensification process, proposed for the region in previous researches. In this sense, possibly this process could not have been so pronounced for that hunter-gatherers exploit the micromammals.
Abstract. Micromammal remains from the archaeological sequence of Agua de La Mula (35º22'24,9''S, 68º15'04,2''W, south-central Mendoza, Argentina) are taphonomically studied. The remains (NISP=1026, MNE=1,026, MNI=491) were recovered from the Late Holocene layers (1,600-1,000 years C14 BP). The micromammal assemblages are composed by 10 taxa of rodents, one chiropteran and two marsupials, associated to transitional mosaic of Patagonian steppe and Monte desert environments. The absence of cut marks and the presence of few burned remains recovered from the site would indicate no human consumption. Moreover, the presence of pellets preserved in stratigraphy and light digestive corrosion on some teeth, indicate that the main accumulator agents were probably avian strigiforms. The absence of weathering, rodent marks, hydraulic transport, root action, and diagenesis, suggest a good preservation and a rapid incorporation of the material in the stratigraphic context. However, trampling, sedimentary corrosion and manganese oxide evidences were seen on the micromammal remains, indicating some episodes of humidity inside the cave. Finally, this information provided here would help us to explain the scope of the resource intensification process, proposed for the region in previous researches. In this sense, possibly this process could not have been so pronounced for that hunter-gatherers exploit the micromammals.
sábado, 19 de julho de 2014
An ecology-based method for defining priorities for large mammal conservation: the tiger as case study
WIKRAMANAYAKE, E.D.; DINERSTEIN, E.; ROBINSON, J.G.; KARANTH, U.; RABINOWITZ, A.; OLSON, D.; MATHEW, T.; HEADAO, P.; CONNER, M.; HEMLEY, G.; BOLZE, D. 1998. An ecology-based method for defining priorities for large mammal conservation: the tiger as case study. Conservation Biology 12(4):865-878.
Abstract. The disappearance of large vertebrates in the tropical belt may be the next biological insult of the global extinction crisis. Large predators and their prey are at particular risk in Asia, where they are threatened by poaching and habitat loss. To facilitate the best use of limited conservation recources, we created and objective, ecology-based method for identifying priority areas for conservation that incorporates both habitat representation and landscape-level features. Using tigers as an example, our method captures the range of ecological habitats where they occur, accounting for ecological, demographic, genetic, and behavioural differences. Our analysis is hierarchical. We divided the tiger range into distinct bioregions and identified tiger habitat types within each. we then delineated tiger conservation units throughout the bioregions and ranked the units based on habitat integrity, poaching pressure, and tiger population trends. To maintain representation of tiger populations and their ecology in the different tiger habitats, we made comparisons only among tiger conservation units from the same tiger habitat types nested within the same bioregion. We identified 159 tiger conservation units in three bioregions - the Indian subcontinent, Indochina, and Southeastern Asia. We ranked the units in three categories that reflect the probability of long-term persistence of tiger populations (highest in level I units). Twenty-five tiger conservation units were classified as level I, 21 as level II, and 97 as level III. An additional 16 tiger conservation units for which little information is available were identified for immediate surveys. Levels I, II and those identified for immediate surveys are the priority areas for immediate funding and for a regional tiger conservation strategy. One feature emerging from the study showed that protected areas cover only small areas of tiger conservation units; If the long-term prospects for tiger conservation are to improve, poaching must be stopped and protected areas increased in number, linked, and buffered by natural habitats. To enhance landscape integrity, the priority tiger conservation units that straddle international borders should be managed as transboundary reserves, giving tiger conservation a stronger regional structure. Like tigers, populations of other wide-ranging mammalian carnivores and large herbivores also are declining due to poaching and loss of habitat. The method we present for tigers can be adapted readly to improve conservation strategies for these species as well.
Abstract. The disappearance of large vertebrates in the tropical belt may be the next biological insult of the global extinction crisis. Large predators and their prey are at particular risk in Asia, where they are threatened by poaching and habitat loss. To facilitate the best use of limited conservation recources, we created and objective, ecology-based method for identifying priority areas for conservation that incorporates both habitat representation and landscape-level features. Using tigers as an example, our method captures the range of ecological habitats where they occur, accounting for ecological, demographic, genetic, and behavioural differences. Our analysis is hierarchical. We divided the tiger range into distinct bioregions and identified tiger habitat types within each. we then delineated tiger conservation units throughout the bioregions and ranked the units based on habitat integrity, poaching pressure, and tiger population trends. To maintain representation of tiger populations and their ecology in the different tiger habitats, we made comparisons only among tiger conservation units from the same tiger habitat types nested within the same bioregion. We identified 159 tiger conservation units in three bioregions - the Indian subcontinent, Indochina, and Southeastern Asia. We ranked the units in three categories that reflect the probability of long-term persistence of tiger populations (highest in level I units). Twenty-five tiger conservation units were classified as level I, 21 as level II, and 97 as level III. An additional 16 tiger conservation units for which little information is available were identified for immediate surveys. Levels I, II and those identified for immediate surveys are the priority areas for immediate funding and for a regional tiger conservation strategy. One feature emerging from the study showed that protected areas cover only small areas of tiger conservation units; If the long-term prospects for tiger conservation are to improve, poaching must be stopped and protected areas increased in number, linked, and buffered by natural habitats. To enhance landscape integrity, the priority tiger conservation units that straddle international borders should be managed as transboundary reserves, giving tiger conservation a stronger regional structure. Like tigers, populations of other wide-ranging mammalian carnivores and large herbivores also are declining due to poaching and loss of habitat. The method we present for tigers can be adapted readly to improve conservation strategies for these species as well.
terça-feira, 15 de julho de 2014
Journals: Ciência Florestal
Ciência
Florestal
- Qualis
CAPES: B2 (Biodiversidade), B5 (Ciências Biológicas I).
- Taxa
de Publicação: Sim; há também taxa de submissão.
-
Idiomas: Português, Inglês, Espanhol.
-
Disponibilidade: Acesso gratuito a todos os artigos na home
page.
-
Submissão: On-line, por um sistema próprio, com acesso na home
page.
O periódico Ciência Florestal foi criado em 1991 com o objetivo de ser um
veículo de divulgação onde são publicados trabalhos técnico-científicos
relacionados à área florestal. O periódico publica artigos científicos, notas
técnicas e revisões bibliográficas relacionadas à área das ciências florestais.
sábado, 12 de julho de 2014
Impacts of the Cretaceous terrestrial revolution and KPg extinction on mammal diversification
MEREDITH, R.W.; JANEčKA, J.E.; GATESY, J.; RYDER, O.A.; FISCHER, C.A.; TEELING, E.C.; GOODBLA, A.; EIZIRIK, E.; SIMÃO, T.L.L.; STADLER, T.; RABOSKY, D.L.; HONEYCUTT, R.L.; John J. FLYNN, J.J.; INGRAM, C.M.; STEINER, C.; WILLIAMS, T.L.; ROBINSON, T.J.; BURK-HERRICK, A.; WESTERMAN, M.; AYOUB, N.A.; SPRINGER, M.S.; William J. MURPHY, W.J. 2011. Impacts of the Cretaceous terrestrial revolution and KPg extinction on mammal diversification. Science 28(334):521-524.
Abstract. Previous analyses of relations, divergence times, and diversification patterns among extant mammalian families have relied on supertree methods and local molecular clocks. We constructed a molecular supermatrix for mammalian families and analyzed these data with likelihood-based methods and relaxed molecular clocks. Phylogenetic analyses resulted in a robust phylogeny with better resolution than phylogenies from supertree methods. Relaxed clock analyses support the long-fuse model of diversification and highlight the importance of including multiple fossil calibrations that are spread across the tree. Molecular time trees and diversification analyses suggest important roles for the Cretaceous Terrestrial Revolution and Cretaceous-Paleogene (KPg) mass extinction in opening up ecospace that promoted interordinal and intraordinal diversification, respectively. By contrast, diversification analyses provide no support for the hypothesis concerning the delayed rise of present-day mammals during the Eocene Period.
Abstract. Previous analyses of relations, divergence times, and diversification patterns among extant mammalian families have relied on supertree methods and local molecular clocks. We constructed a molecular supermatrix for mammalian families and analyzed these data with likelihood-based methods and relaxed molecular clocks. Phylogenetic analyses resulted in a robust phylogeny with better resolution than phylogenies from supertree methods. Relaxed clock analyses support the long-fuse model of diversification and highlight the importance of including multiple fossil calibrations that are spread across the tree. Molecular time trees and diversification analyses suggest important roles for the Cretaceous Terrestrial Revolution and Cretaceous-Paleogene (KPg) mass extinction in opening up ecospace that promoted interordinal and intraordinal diversification, respectively. By contrast, diversification analyses provide no support for the hypothesis concerning the delayed rise of present-day mammals during the Eocene Period.
quarta-feira, 9 de julho de 2014
sábado, 5 de julho de 2014
Use of arboreal and terrestrial space by a small mammal community in a tropical rain forest in Borneo, Malaysia
WELLS, K. PFEIFFER, M.; LAKIM, M.B.; LINSENMAIR, K.E. 2004. Use of arboreal and terrestrial space by a small mammal community in a tropical rain forest in Borneo, Malaysia. Journal of Biogeography 31:641-652.
Abstract:
Aim: Small mammals were live-trapped in a primary rain forest to evaluate the relative distribution of species to each other and to microhabitat properties on the ground and in the canopy.
Location: Kinabalu National Park in Borneo, Sabah, Malaysia.
Methods: Seven trapping sessions were conducted along two grids with 31 trap points at distances of 20 m on the ground and in the lower canopy at an average height of 13.5 m.
Results: Species diversity and abundance of small mammals proved to be high: 20 species of the families Muridae, Sciuridae, Tupaiidae, Hystricidae, Viverridae and Lorisidae were trapped, with murids being dominant in both habitat layers. The terrestrial community was significantly more diverse with 16 captured species (Shannon–Wiener’s diversity index H'terr = 2.47), while 11 species were trapped in the canopy (H'arb = 1.59). The Whitehead’s rat, Maxomys whiteheadi, and the red spiny rat, Maxomys surifer, dominated the terrestrial community whereas the large pencil-tailed tree mouse, Chiropodomys major, was by far the most abundant species in the canopy. Other abundant species of the canopy community, the dark-tailed tree rat, Niviventer cremoriventer, and the lesser treeshrew, Tupaia minor, were also abundant on the ground, and there was no clear boundary between arboreal and terrestrial species occurrences.
Main Conclusions: As most species were not confined to specific microhabitats or habitat layers, species seemed to rely on resources not necessarily restricted to certain microhabitats or habitat layers, and separation of species probably resulted mainly from a species’ concentrated activity in a preferred microhabitat rather than from principal adaptations to certain habitats. Ecological segregation was stronger in the more diverse terrestrial community, though microhabitat selection was generally not sufficient to explain the co-occurrences of species and the variability between local species assemblages. Constraints on small mammal foraging efficiency in the three-dimensional more complex canopy may be responsible for the similarity of microhabitat use of all common arboreal species. Community composition was characterized by mobile species with low persistence rates, resulting in a high degree of variability in local species assemblages with similar turnover rates in both habitats.
Abstract:
Aim: Small mammals were live-trapped in a primary rain forest to evaluate the relative distribution of species to each other and to microhabitat properties on the ground and in the canopy.
Location: Kinabalu National Park in Borneo, Sabah, Malaysia.
Methods: Seven trapping sessions were conducted along two grids with 31 trap points at distances of 20 m on the ground and in the lower canopy at an average height of 13.5 m.
Results: Species diversity and abundance of small mammals proved to be high: 20 species of the families Muridae, Sciuridae, Tupaiidae, Hystricidae, Viverridae and Lorisidae were trapped, with murids being dominant in both habitat layers. The terrestrial community was significantly more diverse with 16 captured species (Shannon–Wiener’s diversity index H'terr = 2.47), while 11 species were trapped in the canopy (H'arb = 1.59). The Whitehead’s rat, Maxomys whiteheadi, and the red spiny rat, Maxomys surifer, dominated the terrestrial community whereas the large pencil-tailed tree mouse, Chiropodomys major, was by far the most abundant species in the canopy. Other abundant species of the canopy community, the dark-tailed tree rat, Niviventer cremoriventer, and the lesser treeshrew, Tupaia minor, were also abundant on the ground, and there was no clear boundary between arboreal and terrestrial species occurrences.
Main Conclusions: As most species were not confined to specific microhabitats or habitat layers, species seemed to rely on resources not necessarily restricted to certain microhabitats or habitat layers, and separation of species probably resulted mainly from a species’ concentrated activity in a preferred microhabitat rather than from principal adaptations to certain habitats. Ecological segregation was stronger in the more diverse terrestrial community, though microhabitat selection was generally not sufficient to explain the co-occurrences of species and the variability between local species assemblages. Constraints on small mammal foraging efficiency in the three-dimensional more complex canopy may be responsible for the similarity of microhabitat use of all common arboreal species. Community composition was characterized by mobile species with low persistence rates, resulting in a high degree of variability in local species assemblages with similar turnover rates in both habitats.
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