Consulta: subjectFacets:"Fire"
Registros recuperados: 41
Data/hora: 16/06/2024 11:23:53

Comments on "Cross-cultural Conflicts in Fire Management in Northern Australia: Not so Black and White" by Alan Andersen
Provedor de dados: 7
Autores: Elmqvist, Thomas; Stockholm University; thomase@system.ecology.su.se.
Tipo: Peer-Reviewed Reports
Palavras-chave: Cultural conflicts; Ecosystem management; Fire; Natural resources.
Ano: 2000

Expert and Generalist Local Knowledge about Land-cover Change on South Africa&amp;#8217;s Wild Coast: Can Local Ecological Knowledge Add Value to Science?
Provedor de dados: 7
Autores: Chalmers, Nigel; Rhodes University, South Africa;; Fabricius, Christo; Rhodes University, South Africa; c.fabricius@ru.ac.za.
Local ecological knowledge (LEK) can shed light on ecosystem change, especially in under-researched areas such as South Africa&amp;#8217;s Wild Coast. However, for ecosystem planning purposes, it is necessary to assess the accuracy and validity of LEK, and determine where such knowledge is situated in a community, and how evenly it is spread. Furthermore, it is relevant to ask: does LEK add value to science, and how do science and local knowledge complement one another? We assessed change in woodland and forest cover in the Nqabara Administrative Area on South Africa&amp;#8217;s Wild Coast between 1974 and 2001. The inhabitants of Nqabara are &amp;#8220;traditional&amp;#8221; Xhosa-speaking people who are highly dependent on natural resources for their...
Tipo: Peer-Reviewed Reports
Palavras-chave: Cultivation; Fire; GIS; Land-cover change; Landscape ecology; Local ecological knowledge; Politics; Scientific knowledge; Vegetation.
Ano: 2007

Managing for Old Growth in Frequent-fire Landscapes
Provedor de dados: 7
Autores: Fiedler, Carl E.; College of Forestry and Conservation, University of Montana; carl.fiedler@umontana.edu; Friederici, Peter; School of Communication, Northern Arizona University; peter.friederici@nau.edu; Petruncio, Mark; Forestry Program, Yakama Nation; petruncio@yakama.com; Denton, Charles; Ecological Restoration Institute; Charles.Denton@nau.edu; Hacker, W. David; Forestry Department, New Mexico Highlands University; david_hacker@nmhu.edu.
There is no one-size-fits-all approach to managing frequent-fire, old-growth forests. However, there are general guidelines to follow: 1) set objectives for both structure (tree density, diameter distribution, tree species composition, spatial arrangement, amount of coarse woody debris) and function (nutrient cycling, desired tree species regeneration); 2) prioritize treatments according to ecological, economic, and social needs and risks; 3) identify the potential treatments (natural fire, prescribed fire, silvicultural cutting) that best meet the objectives and scale of the project; and 4) implement the treatment(s). We discuss each of these guidelines in this article.
Tipo: Peer-Reviewed article
Palavras-chave: Fire; Forest management; Function; Silvicultural treatments; Structure; Thinning.
Ano: 2007

Invasion of Matrix Species in Small Habitat Patches
Provedor de dados: 7
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

Tropical Forest Reorganization after Cyclone and Fire Disturbance in Samoa: Remnant Trees as Biological Legacies
Provedor de dados: 7
Autores: Elmqvist, Thomas; Stockholm University; thomase@system.ecology.su.se; Wall, Maria; Stockholm University; fredwall@club-internet.fr; Berggren, Anna-Lena; Stockholm University; Anna-Lena.Berggren@o.lst.se; Blix, Lisa; Stockholm University; lisa.blix@lrf.se; Rinman, Ulrika; Stockholm University; ulrika.rinman@sjv.se.
In disturbed rain forests, large, living remnant trees may be of significant importance for  postdisturbance reorganization either directly, by producing large quantities of seeds, or indirectly, by attracting vertebrate seed dispersers. In addition, remnant trees may also be important in providing a favorable microhabitat for seedlings of late-successional species. This study focused on the role of large remnant trees (&amp;gt; 40 cm dbh) in patterns of regeneration after cyclone and fire damage in the Tafua and Falealupo Rain Forest Preserves, Savai&amp;iacute;, Samoa. At Tafua, 10 large trees at each of two sites (one site burned in 1990) were investigated with regard to numbers of species and densities of plants from three different size classes at...
Tipo: Peer-Reviewed Reports
Palavras-chave: Biological legacies; Cyclone; Fire; Rain forest; Remnant trees; Reorganization; Vertebrate dispersal.
Ano: 2001

Aspectos motivacionais para o uso do fogo na agricultura no Distrito Federal e Entorno.
Provedor de dados: 14
Autores: RODRIGUES, M. F.; ROCHA, F. E. de C.; CORTE, J. L. D.; SALVIATI, M. E.; OLIVEIRA FILHO, E. C. de.
bitstream/item/145019/1/bolpd-328.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Sustentabilidade; Produtor rural; Crença; Método qualitativo; Uso do fogo; Fire; Burned; Believes; Qualitative method; Use of fire.; Queimada; Agricultura; Fogo; Agriculture; Farmers.
Ano: 2016
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1046623

Uso do fogo no controle de pragas das pastagens.
Provedor de dados: 14
Autores: SILVA, A. de B.; SERRÃO, E. A. S.
bitstream/item/59277/1/CPATU-ComTec50.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Controle; Pasture; Pest; Control; Fire; Spittleburgs.; Cigarrinha; Fogo; Pastagem; Praga.
Ano: 1983
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383296

Efeitos da queima na produção e valor nutritivo da matéria seca em área de Andropogon bicornis.
Provedor de dados: 14
Autores: CARDOSO, E. L.; CRISPIM, S. M. A.; BARIONI JÚNIOR, W.
O trabalho foi conduzido em um campo nativo do Pantanal predominado pela espécie Andropogon bicornis. O objetivo deste trabalho foi avaliar os efeitos da queima na dinâmica da biomassa aérea do estrato herbáceo e sobre os teores de proteína bruta (PB), fibra em detergente ácido (FDA), fibra em detergente neutro (FDN) e lignina na matéria seca das espécies de interesse forrageiro. A área de estudo foi submetida aos tratamentos sem queima e com queima, ambos sem pastejo. Os dados de biomassa aérea e valor nutritivo da matéria seca foram analisados nos onze meses subseqüentes à queima. A biomassa aérea da área com queima apresentou pequeno incremento linear de matéria seca, tornando sua biomassa significativamente menor que a obtida na área sem queima....
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Andropogon bicornis; Native pasture; Grassland management; Fire; Dry matter.; Digestibilidade; Fogo; Matéria Seca; Manejo; Pastagem Nativa; Valor Nutritivo.; Digestibility; Nutritive value.
Ano: 2003
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/811100

Les travaux du groupement national materiaux composites en technologie navale
Provedor de dados: 5
Autores: Baudin, M.
This communication presents a research programme concerned with the behaviour of composite materials used in marine structures, including properties, calculation methods, fire behaviour, and fabrication. Conclusions from this project will be presented in the form of recommendation cards which will help French manufacturers to obtain gains in productivity, competitiveness and quality.
Tipo: Text
Palavras-chave: Tests; Materials testing; Fire; Methodology; Mathematical models; Ship design; Ship technology; Composite materials.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/1992/acte-1048.pdf

Le comportement en fluage, en fatigue et la tenue au feu de composites sandwichs
Provedor de dados: 5
Autores: Chevalier, J.
Baltek Corp. is currently in the process of introducing 3 new products: density select material, AL-600/10 and DecoLite panels, that reduce weight and cost. Creep results on typical core materials have shown that only end-grain balsa (EGB) and 9.0 lb. Nomex honeycomb were capable of continuous operation at 160 F (71 degree C). In reverse bending fatigue studies, EGB has a fatigue limit 2-2.4 times that of the PVC foams. Finally, while EGB by itself is a ASTM E-84 Class 2 material, with the proper skins and resin system, it can easily meet Class 1 requirements.
Tipo: Text
Palavras-chave: Fatigue (materials); Creep; Fire; Ship technology; Ship design; Composite materials; Feu; Nid d'abeille; PVC; Ame balsa; Sandwich; Composite.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/1992/acte-1065.pdf

Materiaux composites courants: Tenue au feu
Provedor de dados: 5
Autores: Croquette, Jean; Baudin, M.
In the national naval composites project, several series of fire tests have been carried out on epoxy glass pipes and different structural materials commonly used in naval construction. This paper describes the materials tested and the procedures chosen to evaluate the fire reaction properties: flammability (M classification), smoke emission (F classification), and the fire resistance (IMO A 517(13)). The conclusions are given for both the testing procedures and the performance of the composite materials.
Tipo: Text
Palavras-chave: Pipes; Fire; Tests; Materials testing; Ship technology; Composite materials; Tuyauteries; Sandwich; Tenue au feu; Matériau composite.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/1992/acte-1047.pdf

Terrestrial plant microfossils in palaeoenvironmental studies, pollen, microcharcoal and phytolith. Towards a comprehensive understanding of vegetation, fire and climate changes over the past one million years
Provedor de dados: 5
Autores: Daniau, Anne-laure; Desprat, Stéphanie; Aleman, Julie C.; Bremond, Laurent; Davis, Basil; Fletcher, William; Marlon, Jennifer R.; Marquer, Laurent; Montade, Vincent; Morales-molino, César; Naughton, Filipa; Rius, Damien; Urrego, Dunia H.
The Earth has experienced large changes in global and regional climates over the past one million years. Understanding processes and feedbacks that control those past environmental changes is of great interest for better understanding the nature, direction and magnitude of current climate change, its effect on life, and on the physical, biological and chemical processes and ecosystem services important for human well-being. Microfossils from terrestrial plants – pollen, microcharcoal and phytoliths – preserved in terrestrial and marine sedimentary archives are particularly useful tools to document changes in vegetation, fire and land climate. They are well-preserved in a variety of depositional environments and provide quantitative reconstructions of past...
Tipo: Text
Palavras-chave: Pollen; Microcharcoal; Phytolith; Terrestrial and marine sedimentary archives; Vegetation; Fire; Middle Pleistocene; Last glacial period; Holocene.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00485/59705/83610.pdf

Ecology of small terrestrial mammals in an isolated Cerrado patch, eastern Paraguay: communities, species, and effects of enso, precipitation, and fire
Provedor de dados: 81
Autores: Owen,Robert D.
The Cerrado extends as islands or patches into the Upper Paraná Atlantic Forest (UPAF) of Brazil and Paraguay. This study evaluates the temporal dynamics of a marginal terrestrial small-mammal community in an isolated Cerrado patch within the UPAF, at the southwestern distributional limit of the Cerrado and near the western limit of the UPAF in eastern Paraguay. Because the faunal members of marginal communities are living near the limits of their capabilities in terms of their abiotic and biotic environment, the communities in such areas are likely to be a mixture of Cerrado and UPAF species, sensitive to extrinsic variables such as climate change and anthropogenic changes in land use. In this 23-month study, temporal dynamics of a terrestrial...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cricetidae; Didelphidae; Echimyidae; Fire; ENSO; Precipitation.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832013000100007

Nepenthes minima (Nepenthaceae), a new pyrophytic grassland species from Sulawesi, Indonesia
Provedor de dados: 16
Autores: Cheek, M.; Jebb, M.H.P.
Nepenthes minima is the first known pyrophytic grassland Nepenthes species from outside Indochina and the Philippines. A member of the sect. Regiae (Borneo, Wallacea, New Guinea) it is restricted to the highland grasslands of Central Sulawesi (Celebes) and has close affinities with Nepenthes maxima. The existence of Nepenthes minima, unique to these grasslands, suggests that they may be natural and predate the human influences that expanded them beginning 2000–3000 BP.
Tipo: Article / Letter to the editor
Palavras-chave: Carnivorous plants; Fire; Nepenthes; Pyrophyte; Regiae; Sulawesi grasslands.
Ano: 2016
URL: http://www.repository.naturalis.nl/record/617907

Temporal and spatial variation of Stenoma cathosiota Meyrick (Lepidoptera: Elachistidae) caterpillar abundance in the cerrado of Brasilia, Brazil
Provedor de dados: 82
Autores: Morais,Helena C.; Cabral,Bérites C.; Mangabeira,Jacimary A.; Diniz,Ivone R.
The caterpillars of Stenoma cathosiota Meyrick feed on Roupala montana Aubl. (Proteaceae) in the cerrado of the Distrito Federal, Brazil. They construct shelters by joining leaves of the plant where they feed and pupate. The caterpillars are parasitized by a wasp (Hymenoptera: Brachonidae), which emerges from the pupae. Caterpillar abundance and parasitism frequency were associated in an area of frequently burned cerrado (biennial fire) and in another area that burns sporadically (1987 and 1994). For S. cathosiota, the variation among years in a single area, with sporadic fires, was greater than the variation among areas with different fire regimes. Caterpillar abundance among years was significantly different in the area that burns sporadically (chi² =...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Braconidae; Stenomatinae; Fire; Host plant; Parasitism.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2007000600004

Effect of prescribed fre on forage production and nutritive value of the perennial grass Saccharum griffithii
Provedor de dados: 85
Autores: Gul,B; Islam,M; Ahmad,S; Gul,S.
The effect of fre on growth and nutritive value of Saccharum griffithii Munro ex Boiss-ravennae (Linn.) Murr. hybrid, a low palatable perennial grass in the semi-arid region of the highlands of Balochistan, Pakistan, was evaluated during 2008 and 2009. Prescribed fire treatments were applied in February 2008 and 2009 at the dormant stage of vegetation. Different growth parameters (tiller height, tiller number/plant), forage production (fresh, dry) and nutritive value (crude protein, ash) were compared with control (unburnt) plots. Fire increased the number of tillers, and the fresh and dry forage production in both years. Fire also improved the crude protein contents. Prescribed fire at the dormant stage of vegetation can be used as a vegetation tool to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tiller growth; Fire; Biomass.
Ano: 2014
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572014000200025

Seed Longevity of Spotted Spurge and Wild Poinsettia Under Diverse Environmental Conditions
Provedor de dados: 87
Autores: ASGARPOUR,R.; GHORBANI,R.; KHAJEH-HOSSEINI,M.; GOLZARDI,F.; ILKAEE,M.N.
ABSTRACT: Seed longevity under different environmental conditions is considered as one of the most important factors in the spread and persistence of an exotic species. The Experiments were conducted to determine seed persistence in soil, effects of submergence in water, flooding of the soil, and high temperatures on germination and viability of spotted spurge (Chamaesyce maculata) and wild poinsettia (Euphorbia heterophylla) as two exotic species in different regions of Golestan province. Spotted spurge seeds buried at depth of 10 cm maintained their viability above 95% after a year, while wild poinsettia seeds were destroyed completely after exhuming the soil. Seeds of both species were unable to germinate under submergence, but 92% of the spotted spurge...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chamaesyce maculata; Euphorbia heterophylla; Fire; Flooding; Seedbank; Seed persistence.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100202

WEED COMPETITION WITH SOYBEAN IN NO-TILLAGE AGROFORESTRY AND SOLE-CROP SYSTEMS IN SUBTROPICAL BRAZIL
Provedor de dados: 87
Autores: DEISS,L.; MORAES,A.; PELISSARI,A.; FRANZLUEBBERS,A.J.; NETO,F.S.; PONTES,L.S.; BARRO,R.S.; SZYMCZAK,L.S.
ABSTRACT Weed competition on soybean (Glycine max) growth and yield was expected to be different when managed in an agroforestry system as compared with sole-cropping without trees. Therefore agronomic practices to control weeds might need to be modified in agroforestry systems. We analyzed weed competition effects on soybean growth, grain yield, and yield components at different distances from 4year-old eucalyptus (Eucalyptus benthamii) in an alley cropping system, as well as in a sole-crop system in southern Brazil. Above-ground soybean biomass was collected throughout the growing season and a logistic function was used to model crop growth. Weed above-ground biomass sampled during the soybean cycle, and grain yield and yield components at the end of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eucalyptus benthamii; Fire; Glycine max; Growth analysis; Interference; Integrated crop-livestock system.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100268

Community structure of vascular plants in treefall gaps and fire-disturbed habitats in the Atlantic rainforest, southern Bahia, Brazil
Provedor de dados: 88
Autores: Martini,Adriana Maria Zanforlin; Santos,Flavio Antonio Maës dos; Prado,Paulo Inácio; Jardim,Jomar Gomes.
The effects of disturbances on plant community structure in tropical forests have been widely investigated. However, a majority of these studies examined only woody species, principally trees, whereas the effects of disturbances on the whole assemblage of vascular plants remain largely unexplored. At the present study, all vascular plants &lt; 5m tall were surveyed in four habitats: natural treefall gaps, burned forest, and their adjacent understorey. The burned area differed from the other habitats in terms of species composition. However, species richness and plant density did not differ between burned area and the adjacent understorey, which is in accordance to the succession model that predict a rapid recovery of species richness, but with a different...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic forest; Fire; Growth habits; Natural treefall gaps; Species richness.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042007000200014

Estudo fenológico de Stryphnodendron adstringens (Mart.) Coville no cerrado sensu stricto da Fazenda Água Limpa no Distrito Federal, Brasil
Provedor de dados: 88
Autores: FELFILI,JEANINE MARIA; SILVA JUNIOR,MANOEL CLAUDIO DA; DIAS,BENEDITO JOSÉ; REZENDE,ALBA VALÉRIA.
Stryphnodendron adstringens, conhecida como barbatimão, é uma espécie de distribuição geográfica ampla no bioma cerrado, ocorrendo desde o Pará, pelo planalto central, até Minas Gerais e São Paulo. Sua casca e frutos contêm tanino e apresentam propriedades medicinais. É uma espécie de baixa exigência nutricional e não acumuladora de alumínio. É hermafrodita e polinizada por pequenos insetos, especialmente abelhas. Está entre as principais espécies lenhosas encontradas na área de estudo. O objetivo deste estudo foi avaliar os eventos fenológicos desta espécie, numa área de cerrado sensu stricto na Fazenda Água Limpa (15°56'S e 47°46'W), durante cinco anos (1987-1991). Dez árvores foram selecionadas e observadas de 18/01/1987 até 07/11/1991 a intervalos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phenology; Savanna; Cerrado; Fire; Stryphnodendron adstringens; Brazil.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041999000100011

Floristic and vegetation structure of a granitic grassland in Southern Brazil
Provedor de dados: 88
Autores: Ferreira,Pedro Maria de Abreu; Müller,Sandra Cristina; Boldrini,Ilsi Iob; Eggers,Lilian.
A floristic and structural survey of a natural grassland community was conducted on Morro do Osso, a granitic hill in Porto Alegre, RS, Brazil. Structural data were surveyed in 39 one square meter plots placed over two major grassland areas. An accidental fire has occurred in one of the areas approximately one year prior to our survey, leading to further analysis of parameters differences between sites. The floristic list contains 282 species, whereas the structural survey has found 161 species. Families with highest accumulated importance values were Poaceae, Asteraceae and Fabaceae. The diversity and evenness indexes were 4.51 nats ind-1 and 0.86, respectively. Cluster analysis denoted two groups coinciding with the areas distinguished by the fire...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Campos; Diversity; Fire; Relict vegetation; Similarity; Threatened species.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042010000100004

Soil Biological, Chemical, and Physical Properties After a Wildfire Event in a Eucalyptus Forest in the Pampa Biome
Provedor de dados: 90
Autores: Santana,Natielo Almeida; Morales,Cedinara Arruda Santana; Silva,Diego Armando Amaro da; Antoniolli,Zaida Inês; Jacques,Rodrigo Josemar Seminoti.
ABSTRACT Wildfire events cause considerable environmental disturbance but few studies have examined changes in soil properties due to fire. This study aimed to assess the effect of a wildfire event on chemical, physical, and biological properties of the soil in a eucalyptus forest in the Pampa biome. Part of a seven-year-old eucalyptus forest was affected by a wildfire event that lasted for two days. Soil and plant litter sampling was performed in three areas: in the forest that was not affected by the fire, in the forest affected by it, and in an adjacent natural pasture area (the original vegetation). Seven samples were collected from the 0.00-0.05 and 0.05-0.20 m layers of each plot for biological analysis, and three samples were collected for chemical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fire; Environmental disturbance; Soil quality; Soil diversity.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100417

Fire regimen and spread of plants naturalized in central Chile
Provedor de dados: 97
Autores: CONTRERAS,TOMÁS E; FIGUEROA,JAVIER A; ABARCA,LUIS; CASTRO,SERGIO A.
Setting fires is an old practice of land management in the Mediterranean region of central Chile. Fire in the region is currently of predominantly human origin and previously published material suggests that the scheduling of these activities is associated with the spread of naturalized exotic species. Research into the effects of fire on both native and exotic Mediterranean vegetation in central Chile has increased notably over recent years. The objective of our review is to highlight new knowledge in this area of research from the last 30 years and to contribute to systematization and an explicit conceptual model which takes into account the effect of a fire regimen on the spread of exotic plants and the mechanisms involved. We begin with analyses of the...
Tipo: Journal article
Palavras-chave: Central Chile; Exotic plant; Fire; Germination; Naturalized plant.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2011000300001

Fire effects on a Spartina densiflora salt marsh in the floodplain of the Paraná River, Argentina
Provedor de dados: 97
Autores: MADANES,NORA; FISCHER,SYLVIA; VICARI,RICARDO.
We studied the effects of fire on the structural attributes of a Spartina densiflora salt marsh. The study was carried out from November 1995, spring (N95S) to December 1996, late spring (D96LS). In November 1995, we installed 37 permanent plots. In January 1996, 32 of the plots were accidentally burned (B) and the remaining were not burned (NB). Vegetation on each plot was sampled seasonally, plant species were identified and cover-abundance was estimated. We analyzed and compared seasonal variations in plant species richness, diversity, composition and cover-abundance in burned and non-burned plots. In addition, we analyzed variations in biological types (forbs, graminoids) and types of life cycles (annuals, perennials) in B and NB plots before and after...
Tipo: Journal article
Palavras-chave: Spartina densiflora; Salt-marsh; Fire; Community.
Ano: 2007
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2007000200005

The effect of heat and smoke on the emergence of exotic and native seedlings in a Mediterranean fire-free matorral of central Chile
Provedor de dados: 97
Autores: FIGUEROA,JAVIER A; CAVIERES,LOHENGRIN A.
We studied the effect of heat shock and wood-fueled smoke on the emergence of native and exotic plant species in soil samples obtained in an evergreen matorral of central Chile that has been free of fire for decades. It is located on the eastern foothills of the Andes Range in San Carlos de Apoquindo. Immediately after collection samples were dried and stored under laboratory conditions. For each two transect, ten samples were randomly chosen, and one of the following treatments was applied: (1) heat-shock treatment, (2) plant-produced smoke treatment, (3) combined heat-and-smoke treatment, and (4) control, corresponding to samples not subjected to treatment. Twenty-seven species, representing 13 families, emerged from the soil samples. The most abundant...
Tipo: Journal article
Palavras-chave: Central Chile; Exotic herb; Fire; Heat-shock; Smoke.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2012000100008

ผลกระทบของไฟป่าต่อดินและพืช ณ ท้องที่ดอยอ่างขาง: ผลในปีแรก
Provedor de dados: 106
Autores: Sirirat Boonplian.
Thesis (M.Sc. in Forestry)
Tipo: PhysicalObject
Palavras-chave: Plant; Soil; Fire; Doi Angkhang; พืช; ดิน; ไฟป่า; ผลกระทบ; ดอยอ่างขาง.
Ano: 1985
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5465

Changes in soil organic carbon after burning in a forest-savanna edge
Provedor de dados: 109
Autores: Sánchez Ojeda,Federico; Armenteras Pascual,Dolors.
Abstract Soils are one of the largest terrestrial pools of carbon, yet there is still little understanding of spatial variability for ecosystems in the tropics. Fire plays an important role in Neotropical savannas ecosystems and significantly contribute to global greenhouse gas (GHG) fluxes. Nevertheless, the impacts of burning on soil carbon is still uncertain in Latin America. We compared soil organic carbon (SOC) in the first 20 cm depth in savannas in pre and post fire conditions along a forests-savanna edge typically present in these landscapes of the northern South America. We established 8 transects of 20 m longitude along the border with 1m2 plots sampled every 4 m. SOC pre-disturbance was on average 1.794 (±SE 0.043) and the minimum value found...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: SOC; Fire; Edge influence; Disturbance; Carbon cycl; Colombia.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122017000400519

Post-fire resprouting strategies of woody vegetation in the Brazilian savanna
Provedor de dados: 39
Autores: Souchie,Fabiane Furlaneto; Pinto,Jose Roberto Rodrigues; Lenza,Eddie; Gomes,Letícia; Maracahipes-Santos,Leonardo; Silvério,Divino Vicente.
ABSTRACT Post-fire response by vegetation may reflect the severity of the damage suffered, but we still know little about the species-specific nature of responses to fire or their predictors. Here, we evaluated 26 woody species before and after a fire event in an Cerrado sensu stricto area (typical Brazilian savanna-type) in order to evaluate mortality rates and the type of resprouting (epigeal, hypogeal or epigeal + hypogeal). We evaluated the relative importance of stem diameter, height, and bark thickness as predictors of the type of post-fire resprouting, using a sequential logistic regression model (SLRM). Mortality was 4 %, while epigeal resprouting was recorded in 57 % of the individuals, hypogeal resprouting was recorded in 24 %, and epigeal +...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bark thickness; Cerrado sensu stricto; Disturbance; Fire; Resilience.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200260

Key factors affecting seed germination of Copaifera langsdorffii, a Neotropical tree
Provedor de dados: 39
Autores: Souza,Matheus Lopes; Silva,Dávila Regina Pacheco; Fantecelle,Laura Bubantz; Lemos Filho,José Pires de.
In natural conditions biotic and abiotic factors interact, synergistically affecting seed germination. In this study, we experimentally simulated natural conditions that occur during seed dispersal that can affect the germination of Copaifera langsdorffii. Specifically we evaluated the effect of aril removal by different dispersal agents (birds and ants) and fire on germination. The seeds were submitted to the following treatments: Control (seeds placed to germinate with aril intact); Acid (simulation of passage through the digestive tract of a bird); Aril removal (simulation of aril removed by ants); Fire (seeds exposed to fire). Germination percentage and time varied among treatments (X²=89.735, P&lt;0.001; X²=16.225, P&lt;0.001, respectively). None of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerrado; Copaifera langsdorffii; Fire; Plant-disperser interaction; Seed germination.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000400473

How does resprouting response differ among three species of savanna trees and in relation to plant size?
Provedor de dados: 39
Autores: Massi,Klécia Gili; Franco,Augusto César.
ABSTRACT Cerrado tree species can survive fire by resprouting. Generally, large and less damaged plants produce new branches and leaves from stem buds (aerial), whereas small and highly injured individuals would resprout from the stem base or from underground organs (basal). We compared the three most common Cerrado woody plant species in a savanna area of the IBGE Ecological Reserve, Brasília, Brazil, aiming to verify if the resprouting strategy (aerial or basal) differed between species and if that was related to plant size. Guapira noxia had small-sized plants, a higher percentage of trunk charred and more individuals with basal resprouting, while Eriotheca pubescens had large-sized plants with a greater intensity of aerial resprouting, Basal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerrado; Disturbance; Fire; Resprout; Size; Tree.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000400693

Structural assessment of a population of Anacardium humile subjected to fire during different periods of the year
Provedor de dados: 39
Autores: Sousa,Diego Guimarães de; Cunha,Hélida Ferreira da.
ABSTRACT Understanding how fire affects the plant biota of the Cerrado is essential for formulating conservational strategies. We evaluated the effects of fires during different periods of the year on the populational structure of Anacardium humile. The research was carried out in areas of typical cerrado stricto sensu in the territory of the Kalunga, state of Goiás, Brazil. These areas, which comprise the same population, were submitted to the following treatments: unburned (control), burned in May 2016 (early fire - EF), and burned in September 2016 (late fire - LF). In July 2018, we delimited two contiguous transects of 100 x 20 m, subdivided into 10 plots of 20 x 20 m, in each area. Fire stimulated the development of branches from basal regrowth in EF...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anacardiaceae; Burning; Cerrado; Fire; Impact; Regimes.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000200401

Variation in aboveground biomass and necromass of two invasive species in the Atlantic rainforest, southeast Brazil
Provedor de dados: 39
Autores: Portela,Rita Cássia Quitete; Matos,Dalva Maria Silva; Siqueira,Ludmila Pugliese de; Braz,Maria Isabel Guedes; Silva-Lima,Leonardo; Marrs,Robert Hunter.
This paper describes the variation of the above-ground biomass, necromass, and net above-ground primary production (NAGPP) of two weed species, Panicum maximum Jacquin (Poaceae) and Pteridium arachnoideum (Kaulf.) Maxon. (Dennstaedtiaceae), at two sites in the Poço das Antas Biological Reserve, southeast Brazil. Both species form mono-dominant stands in the matrix surrounding forest fragments. The organic matter was sampled monthly from each site, separated into biomass and necromass, and net above-ground primary production (NAGPP) was calculated. There was marked intra-seasonal fluctuation for both species; Pa. maximum generally had the largest values for necromass, total mass and NAGPP (NAGPP, Pa. maximum = 3953 g.m-2.y-1, Pt. arachnoideum = 2667...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fire; Panicum maximum; Plant invasion; Pteridium arachnoideum.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062009000200029

Does fire determine distinct floristic composition of two Cerrado savanna communities on different substrates?
Provedor de dados: 39
Autores: Lenza,Eddie; Abadia,Ana Clara; Menegat,Hélio; Lúcio,Nadjarriny W.; Maracahipes-Santos,Leonardo; Mews,Henrique A.; Santos,Josias O. dos; Martins,Jhany.
ABSTRACT We surveyed two savanna sites, one on flat terrain with deep soil (DS), and the other on hilly terrain with rocky outcrops and shallow soil (RS), before and after an accidental fire. We found that the fire did not cause any significant changes in the species composition or diversity of either community, and did not result in floristic homogenization. However, we did record a reduction in the density of plants and in basal area in the DS savanna in comparison with the RS savanna, as well as a higher rate of basal sprouting, which indicates a trade-off between mortality and sprouting. We conclude that, whereas post-fire changes in vegetation structure were more pronounced in the DS savanna than in the RS, the difference in the underlying substrate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Fire; Fuel; Savanna; Species composition.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200250

Disturbance as a factor in breaking dormancy and enhancing invasiveness of African grasses in a Neotropical Savanna
Provedor de dados: 39
Autores: Gorgone-Barbosa,Elizabeth; Pivello,Vânia R.; Baeza,M. Jaime; Fidelis,Alessandra.
The Cerrado is threatened by wildfires and invasive species. We aimed to evaluate in laboratory conditions whether temperature fluctuation at the soil surface, resulting from the absence of vegetation due to fire, can affect the germination of Urochloa decumbens and U. brizantha, two invasive African grasses. Seeds of both species were submitted to simulations: 1) temperature during fire at 1cm belowground (F); 2) temperature fluctuation at 1cm belowground without vegetation cover for a month (TF); 3) (F) + (TF); 4) control at 25ºC. After treatments, seeds were put to germinate at 25ºC for 40 days. We had four replicates per treatment and three temporal replicates. We compared germination percentage and the mean germination time among treatments using...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerrado; Fire; Germination percentage; Invasive species; Physiological dormancy; Seed dormancy; Temperature fluctuation; Urochloa brizantha; Urochloa decumbens.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000100131

Management techniques for the control of Melinis minutiflora P. Beauv. (molasses grass): ten years of research on an invasive grass species in the Brazilian Cerrado
Provedor de dados: 39
Autores: Martins,Carlos Romero; Hay,John Du Vall; Scaléa,Marcio; Malaquias,Juaci Vitória.
ABSTRACT The invasion of exotic species is considered to be a major threat to the preservation of biodiversity. In the Parque Nacional de Brasília (National Park of Brasília), the invasive Melinis minutiflora (molasses grass) occupies more than 10 % of the area of the park. The present, long-term, study compared two treatments of exposure to molasses grass: 1) fire and 2) integrated management (fire + herbicide sprays + manual removal). The aerial biomass of molasses grass in the experimental area initially represented ca. 55 % of the total aerial biomass, a percentage that apparently did not influence native plant species richness at this site. Fire alone was not sufficient to control molasses grass, which attained its pre-treatment biomass values after...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fire; Glyphosate; Ground layer biomass and species richness; Protected areas; Recolonization.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400546

Woody vegetation dynamics in a floodplain campo de murundus in central Brazil
Provedor de dados: 39
Autores: Pinto,José Roberto Rodrigues; Mews,Henrique Augusto; Jancoski,Halina Soares; Marimon,Beatriz Schwantes; Bomfim,Bárbara de Oliveira.
Campos de murundus (grasslands dotted with knolls that are covered with savanna-like woody vegetation) are a common landscape in central Brazil. In this study, we assessed for the first time the dynamics of the vegetation in a floodplain campo de murundus, describing changes in composition and structure of the woody vegetation. In 2005, we established 16 permanent 25 × 25 m plots, where we identified and mapped individuals with a trunk diameter at the base ≥ 2.86 cm, as well as measuring the height of those individuals. In 2008 (after two fire events), we resampled the plots. In 2005, we had registered 4.54 m² ha-1 of basal area, 430 individuals, 42 species, 36 genera and 24 families. In 2008, we found an increase in basal area (to 4.65 m² ha-1) and a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Earth mounds; Fire; Mortality; Recruitment; Savanna.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000400005

Spatial patterns of two co-occurring savanna and forest tree species in a dense fire-protected savanna fragment
Provedor de dados: 39
Autores: Costa,Rafael Carvalho da; Santos,Flavio Antonio Maës dos.
ABSTRACT Savanna-forest transition under fire-exclusion could be explained by differential competitive performance of savanna and forest species under shading/fire-exclusion. Aiming to understand strategies related to either habitat affinity, we investigated spatial patterns of a savanna and a forest species in a fire-protected savanna. We predicted that: savanna species would have lower abundance than the forest species due to a restriction in the number of open microsites; segregation of size classes and a trend from clumping to regularity with size for forest species due to absence of microsite limitation and intra-specifc competition; and spatial association and increasing clustering with size for savanna species due to microsite limitation. To test...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerrado; Competition; Fire; Microsite limitation; Recruitment; SADIE; Savanna; Spatial patterns.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000400577

Influência da queima no teor de pigmentos, proteína solúvel e carboidratos em gramíneas de pastagens naturais - doi: 10.4025/actascianimsci.v32i3.8400
Provedor de dados: 2
Autores: Mendes, Cristina Rodrigues; UFSM; Lima, Maria da Graça de Souza; UFPel; Quadros, Fernando Luiz Ferreira de; UFSM; Abreu, Claudete Miranda; FURG; Garagorry, Fábio Cervo; UFSM.
A importância do fogo na origem e na manutenção das áreas de pastagens é bastante discutida. O objetivo foi verificar a influência da queima no teor de pigmentos fotossintéticos, proteína solúvel e carboidratos em gramíneas nativas de pastagem sob pastoreio rotacionado. Foram avaliadas as lâminas foliares de oito gramíneas, de pastagem natural, representantes de quatro grupos funcionais. Foram quantificados teores de pigmentos, proteínas solúveis, carboidratos solúveis, amido e açúcares redutores. A maioria das espécies sem queima teve maior teor de pigmentos. De modo geral, não houve efeito do fogo sobre a proteína solúvel, porém as espécies D. sabulorum, A. affinis e A. laevis se destacaram como o grupo de maior teor proteico solúvel dentre as espécies...
Palavras-chave: Carotenóide; Clorofila; Fotossíntese; Fogo; Grupos funcionais Carotenoid; Chlorophyll; Photosynthesis; Fire; Functional groups.
Ano: 2010
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/8400

Effect of high temperature on germination of four legumes from a forest-grassland mosaic in Southern Brazil
Provedor de dados: 49
Autores: Silveira,Fernanda Schmidt; Overbeck,Gerhard Ernst.
Passage of a fire can break dormancy of the seeds of many plant species in fire-prone ecosystems. This response to fire is especially well known for the Fabaceae family, but has been poorly studied in Southern Brazil. We collected seeds of four Fabaceae species present in grasslands-forest mosaics of Southern Brazil: Mimosa bimucronata, Desmodium barbatum, Sesbania virgata and Collaea stenophylla. Seeds were exposed to different heat treatments (exposure to 60° and 80 °C for 5 minutes, to 100 °C for 2 minutes, control without heat treatment); not all species were tested in all treatments. After the treatment, the seeds were kept in a germination chamber with a light period of 12/12 hours and temperature of 25 °C. Germinated seeds were counted every 2 days....
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Campos Sulinos; Ecophysiology; Fabaceae; Fire; Grassland; Heat shock.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200331

The response of bats (Mammalia: Chiroptera) to an incidental fire on a gallery forest at a Neotropical savanna
Provedor de dados: 49
Autores: Oliveira,Hernani F. M. de; Aguiar,Ludmilla M.S.
Fire is a common and natural event in Cerrado that can influence the composition of trees and mammals and change the entire conditions of the environment. This study was developed in a gallery forest of Distrito Federal - Brazil. Bat samplings were conducted for a total of six nights after a fire that happened on the gallery forest. Three samplings were conducted: one day, three months and seven months after fire. A total of nine mist nets (12 m x 3 m) were opened from 7pm to 1am. Captured bats were measured and identified to species. Shannon index measured the species diversity of bats in the gallery forest over time. A rarefaction curve was made to assess the estimated bat richness in each of the samplings and a chi-square test was used to check whether...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Chiroptera; Cerrado; Fire; Impact; Recovery.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000400402

Tree species sprouting from root buds in a semideciduous forest affected by fires
Provedor de dados: 52
Autores: Rodrigues,Ricardo R.; Torres,Roseli B.; Matthes,Luis A. F.; Penha,Alessandra S.
Tree species which sprouted from root buds were identified in a 3.6ha area of a Semideciduous Seasonal Forest fragment in Campinas, São Paulo State (22° 55' S and 47° 05' W), affected by several fires. Connection between sprouts and main trunk root system was confirmed by digging and root exposure. Twenty seven tree species with root buds were identified, with a high proportion of Leguminosae species. The majority of identified species (45%) were characteristic of initial secondary succession stages. Distances between sprouts and main trunks varied from 0.6m (Guettarda viburnioides Cham. and Schltdl- Rubiaceae.) to 14.0m (Colubrina glandulosa Perkins- Rhamnaceae). These results lead discussions about natural and/or human-made disturbances influence on the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Disturbances; Forests; Fire; Root buds; Sprouting; Vegetative propagation.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000100017