Consulta: subjectFacets:"Biomes"
Registros recuperados: 5
Data/hora: 01/06/2024 10:40:00

An Overview of the Implications of Global Change for Natural and Managed Terrestrial Ecosystems
Provedor de dados: 7
Autores: Walker, Brian; CSIRO Sustainable Ecosystems; Brian.Walker@csiro.au; Steffen, Will; ; Will.Steffen@dwe.csiro.au.
Global change is the net effect of individual and interactive effects of changes in land use, atmospheric composition, biological diversity, and climate.  A synthesis of the past six years' activities of the Global Change and Terrestrial Ecosystems project of the IGBP (International Geosphere-Biosphere Programme) deals with global change effects as ecosystem responses and living with global change. Ecosystem responses are considered in terms of changes in function and vegetation composition/structure. Field experiments of elevated CO2 effects on aboveground biomass show, on average, a positive effect on biomass, ranging from -20% to +80%. Some early predictions of CO2 effects (C3 vs. C4 plants, N-fixers, C:N in litter) are not generally supported, and it...
Tipo: Peer-Reviewed Reports
Palavras-chave: Agriculture; Biomes; Carbon dioxide; Climate; Dynamics; Ecosystem functioning; Global change; Impacts; Land use; Terrestrial biosphere; Vegetation changes.
Ano: 1997

Knowledge gaps regarding frugivorous ecological networks between birds and plants in Brazil
Provedor de dados: 84
Autores: Baldiviezo,Cristian Daniel Veliz; Passos,Marcela Fortes de Oliveira; Azevedo,Cristiano Schetini de.
Abstract Vegetation stability, resilience and regeneration can be achieved by various ecological processes, the most important of which is seed dispersion. Among animal groups, birds have the largest number of frugivorous species in the Neotropics. The aim of this study was to conduct a bibliometric analysis to detect general patterns and discover knowledge gaps in order to identify future directions for research into bird frugivory in Brazil. A gap analysis was carried out by obtaining 77 articles published online and evaluating their data in different ways. The results revealed that research on bird frugivory in Brazil was published in 33 scientific journals and financed by 18 national and international funding agencies. The number of publications...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Frugivory; Seed dispersion; Bird-plant interactions; Biomes; Bibliometric analysis.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492019000100254

Two new species of Trichomyia Haliday 1839 (Diptera, Psychodidae, Trichomyiinae) from the Pantanal of Mato Grosso, Brazil
Provedor de dados: 92
Autores: Araújo,Maíra Xavier; Bravo,Freddy; Carvalho,Claudio José Barros de.
Abstract Two new species in the Trichomyiinae (Psychodidae), Trichomyia pantanensis sp. nov. and Trichomyia lamasi sp. nov., are described and illustrated. New records are given for the two additional species Trichomyia spinicauda Araújo &amp; Bravo, 2016 and Trichomyia hispida Araújo &amp; Bravo, 2016. These four species comprise the first records of the genus in the Pantanal region.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomes; Moth flies; New records; Psychodid.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262017000300203

An overview of Brazilian mammalogy: trends, biases and future directions
Provedor de dados: 103
Autores: Brito,Daniel; Oliveira,Leonardo C.; Oprea,Monik; Mello,Marco A. R.
Mammals are among the most charismatic and well-studied organisms, and Brazil harbors the largest mammal diversity of the world. The Brazilian Society of Mammalogy was established in 1985, and since 2001 it organizes the Brazilian Congress of Mammalogy. We used the proceedings of all three editions of this congress together with papers indexed in Web of Science and Scielo to evaluate trends in Brazilian mammalogy. All contributions were categorized according to mammalian order, biome, topic of research and state of authors' affiliation. Our results show that mammalian orders with higher species richness receive more attention, but the ranking is different between abstracts and papers. Higher species richness did not translate into more attention for more...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomes; Meta-analysis; Priorities; Scientometrics.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000100011

Climatically-mediated landcover change: impacts on Brazilian territory
Provedor de dados: 42
Autores: ZANIN,MARINA; TESSAROLO,GEIZIANE; MACHADO,NATHÁLIA; ALBERNAZ,ANA LUISA M.
ABSTRACT In the face of climate change threats, governments are drawing attention to policies for mitigating its effects on biodiversity. However, the lack of distribution data makes predictions at species level a difficult task, mainly in regions of higher biodiversity. To overcome this problem, we use native landcover as a surrogate biodiversity, because it can represent specialized habitat for species, and investigate the effects of future climate change on Brazilian biomes. We characterize the climatic niches of native landcover and use ecological niche modeling to predict the potential distribution under current and future climate scenarios. Our results highlight expansion of the distribution of open vegetation and the contraction of closed forests....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Climate change; Brazil; Ecological niche modeling; Native landcover; Biomes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000300939