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Registros recuperados: 6
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Invasion of Matrix Species in Small Habitat Patches Ecology and Society
The diversity, expressed as species richness in equal-sized samples, of wood-living beetles in successional stages of deciduous forest after forest fires approximately 100 years ago did not differ between patch sizes in this study. Thus, the crucial question for conservation is whether the lack of reduction in diversity in small patches means that a number of small patches can elevate the regional diversity as efficiently as can one larger area. In the present study, the smaller patches did not differ from larger patches in substrate availability, quality, or heterogeneity. The frequency of a group of species was measured as the number of occurrences, viz. the number of trees on which a species was found, summed over all species in the group. The number of...
Tipo: Peer-Reviewed Reports Palavras-chave: Alpha (local) diversity; Beta (between-habitats) diversity; Deciduous forest; Disturbance; Diversity; Fire; Gamma (regional) diversity; Invasion; Matrix habitat; Patch size; Species-richness..
Ano: 1999
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Seed germination of three species of Fabaceae typical of seasonally dry forest PFB - Pesquisa Florestal Brasileira
Arruda, Daniel Meira; Brandão, Diego Oliveira; Veloso, Maria das Dores Magalhães; Nunes, Yule Roberta Ferreira.
This study evaluates seeds germination of Anadenanthera colubrina, Acacia polyphylla and Bauhinia cheilantha, typical species of deciduous forests. Seeds were submitted to pre-germination treatments and attack of native insects. The seeds of each species were grouped in: seeds scarified with sandpaper; seeds immersed in water heated to 70 °C, seeds with signs of attack by herbivore insects and the control group. The largest proportion of germinated seeds occurred in the first week of incubation and germination peak, ranged from first to third day. All groups of A. polyphylla and B.cheilantha showed high germination rate (> 90%), being reduced only when seeds were attacked by insects (< 25%). Mechanic scarification was efficient in A. polyphylla by...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Seed dormancy; Deciduous forest; Tropical dry forest; Seed predation; Propagation; Restoration Recursos Florestais Dormência de sementes; Floresta decídua; Mata seca; Predação de sementes; Propagação; Restauração.
Ano: 2015 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/672
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Mammals of the Bodoquena Mountains, southwestern Brazil: an ecological and conservation analysis Zoologia
Cáceres,Nilton C.; Bornschein,Marcos R.; Lopes,Wellington H.; Percequillo,Alexandre R..
We carried out a mammalian survey in the neighborhoods of the Serra da Bodoquena National Park, Mato Grosso do Sul state, a region poorly known in southwestern Brazil. During the months of April, May and July 2002 we used wire live trap, direct observation, indirect evidence (e.g. tracks), carcasses, and interviews with local residents to record mammalian species. Fifty six mammal species were recorded, including threatened species (14%). These records were discussed regarding species abundance, distribution, range extension, habitat, and conservation. The geographic distribution and ecology of the poorly known marsupials Thylamys macrurus and Micoureus constantiae in Brazil are emphasized.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazilian savanna; Deciduous forest; Distribution; Mammalia; Species richness.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000200021
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Phenology and dispersal syndromes of woody species in deciduous forest fragments of the Pantanal in Mato Grosso do Sul State, Brazil Acta Botanica
Lima,Michele Soares de; Damasceno-Junior,Geraldo Alves.
ABSTRACT We analyzed the phenological responses of shrub-tree species of lowland deciduous (LDF) and submontane deciduous (SFD) forests in the Pantanal, and assessed their relationships with climatic factors at the community level and with strategies for seed dispersal. Vegetative and reproductive phenophases of 50 tree-shrub species were monitored monthly (12 months), and their relationship with climatic variables was tested using multiple linear regression. Time of leaf budding differed between areas for autochoric species and between autochoric and anemochoric species at LDF. Leaf fall in communities and functional groups was seasonal and highly synchronous during the dry season (95 % of species). Leaf budding peaked at the end of the dry season with...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Deciduous forest; Functional groups; Pantanal; Reproductive phenology; Seed dispersion; Vegetative phenology.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000200312
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Soil and leaf nutrient content of tree species support deciduous forests on limestone outcrops as a eutrophic ecosystem Acta Botanica
Rossatto,Davi Rodrigo; Carvalho,Fabrício Alvim; Haridasan,Mundayatan.
The leaf and soil nutrient status of plants has been used to infer structural and functional aspects at the ecosystem level. Such data are available for tropical and savanna systems growing on poor and acidic soils; however, information for species growing on eutrophic and basic soils is lacking. Deciduous tropical forest is one of the most endangered types of tropical forest, and despite the high level of attention aimed at it, little is known about the nutritional composition of its leaves. Here, we provided information on leaf nutrient content ratios and relationships for deciduous tree species growing on a limestone outcrop in Central Brazil. We compared our data on soil and leaf macronutrient concentration with previously published data from savannas...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Calcium; Deciduous forest; Leaf nutrient; Limestone outcrops; Nitrogen.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000200231
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Angiosperm flora used by meliponine guilds (Apidae, Meliponina) occurring at rainforest edges in the state of Ceará, Brazil Anais da ABC (AABC)
LIMA-VERDE,LUIZ W.; LOIOLA,MARIA I.B.; FREITAS,BRENO M..
Information about the use of floristic resources of the immediate edges of ombrophilous forest (Atlantic rainforest) fragments by stingless bees is not readily available in the scientific literature. Considering the importance of these plant species for local guilds of stingless bees, this study aimed to identify and characterize the flora of the immediate borders of four Atlantic rainforest fragments situated in Baturité massif, state of Ceará, used as food resource by stingless bees. We studied the growth-form of the plants, the floristic similarity between edges and the effect of rainfall on the flowering, and suggested simple techniques for handling these areas. We compiled a total of 82 plant species with a predominance of tree and shrub form. There...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Deciduous forest; Floristics; Fragmented habitat; Stingless bee; Trophic resource.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000301395
Registros recuperados: 6
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