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| Registros recuperados: 253 | |
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| Perz, Stephen G.; Valho, Lucas Araujo Car; Passos, Veronica; Rocha, Karla; Silveira, Marcos. |
| Propomos aumentar o conhecimento sobre os impactos da construção e melhoramento em obras de infra-estrutura, nesse caso em particular das estradas, e nas relações entre as pessoas e a floresta. Este tema multifacetado será abordado por um complexo sistema de interações, com ênfase na dinâmica das redes ecológicas, sócio-econômicas e institucionais. Integraremos estes dados de pontos multi-temporais e espacialmente explícitos no sentido de compilar um banco de dados que promova um melhor entendimento da complexa dinâmica das mudanças trazidas por melhoria na infra-estrutura viária. Esta base de dados integrada permitirá modelagem espaço-temporal para comprovar várias expectativas sobre sistemas complexos, como por exemplo, impactos decorrentes de nova... |
| Tipo: Presentation |
Palavras-chave: Infra-estrutura; Resiliencia; Conectividade; Brasil; Amazonia; Infrastructure; Resilience; Connectivity; Brazil; Amazon; Community/Rural/Urban Development. |
| Ano: 2008 |
URL: http://purl.umn.edu/119004 |
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| Silva,Sâmala Glícia Carneiro; Silva,Álvaro Pires da; Giarola,Neyde Fabíola Balarezo; Tormena,Cássio Antônio; Sá,João Carlos de Moraes. |
| Mechanical chiseling has been used to alleviate the effects of compaction in soils under no-tillage (NT). However, its effect on the soil physical properties does not seem to have a defined duration period. The purpose of this study was to evaluate the behavior of the bulk density (BD) and degree of compaction (DC) at different soil depths, after chiseling in no-tillage, for one year. The experiment was performed in Ponta Grossa, Paraná State, Brazil, using an Oxisol (Rhodic Hapludox). Bulk density and DC were previously measured in an area under NT for 16 years, then immediately after chiseling (CHI) in May 2009, six months after chiseling (CHI6M) in October 2009 and one year after chiseling (CHI12M) in May 2010. In the layers 0.0-0.10, 0.10-0.20 and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil compaction; Structure; Soil quality; Resilience. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000200024 |
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| Plastow,Graham Stuart. |
| ABSTRACT The primary principle underlying the application of genomics is that it has the most value for difficult and expensive to measure traits. These traits will differ between species and probably also between markets. Maintenance of health will be one of the biggest challenges for efficient livestock production in the next few decades. This challenge will only increase in the face of demand for animal protein, resistance to existing drugs, and the pressure to reduce the use of antibiotics in agriculture. There is probably genetic variation in susceptibility for all diseases but little has been done to make use of this variation to date. In part this is because it is very difficult as well as expensive to measure this variation. This suggests that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Animal breeding; Disease; Genome analysis; Resilience. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016000600349 |
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| DO VALE,Igor; MIRANDA,Izildinha Souza; MITJA,Danielle; SANTOS,Alessio Moreira; SANTOS,Graciliano Galdino Alves dos; LEÃO,Fábio Miranda; OLIVEIRA,Mariana Gomes; COSTA,Luiz Gonzaga da Silva. |
| ABSTRACT Shade-tolerant forest species are among the most susceptible to habitat loss in agricultural mosaics, where a variety of croplands is connected to forests at different levels of anthropogenic disturbance. We aimed to evaluate the community similarity of shade-tolerant species among different land use types across agricultural mosaics with different levels of disturbance. The study was conducted in three municipalities in southern and southeastern Pará state, in eastern Amazonia. A multiple-community similarity measure based on the Horn similarity index was used to compare land use types and assess the resilience of shade-tolerant species towards forest loss and disturbance at the landscape level. High shade-tolerant species similarity was found... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Floristics; Land use; Pasture; Resilience; Similarity. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000200124 |
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| 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 |
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| ANDRADE,DÁRLISON F.C. DE; GAMA,JOÃO R.V.; RUSCHEL,ADEMIR R.; MELO,LIA O.; AVILA,ANGELA L. DE; CARVALHO,JOÃO O.P. DE. |
| Abstract: The fires that occur in the Amazon are as damaging as the deforestation is. There is a need for further long-term studies on dynamics of tree communities in forests affected by fires. In the present study we evaluated the dynamics of tree species, before and after an accidental fire that occurred in 1997 in an experimental area of terra firme forest in the Floresta Nacional do Tapajós, in western Pará State, Brazil. Approximately 3500 trees with diameter measured at 1.30 m above ground (DBH) ≥ 5 cm were botanically identified and measured in 12 permanent plots of 0.25 ha (50 m x 50 m), in 1983, 1987, 1989, 1995, 2008 and 2012. Analyses of survival, mortality and recruitment of trees were performed. The results showed that although the fire has... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Primary forest; Tree mortality; Post-fire dynamics; Tree recruitment; Resilience. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000300855 |
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| Uribe-Castañeda,Natalia; Satizabal,Carlos Andrés; Herrera Orozco,Leonardo; Cantera Kintz,Jaime Ricardo. |
| ABSTRACT Systems of Uramba Marine Protected Area (MPA), like marine and coastal systems worldwide, sustain a great variety of ecosystem services (ES) (i.e. coastal protection, climate regulation, or food provision, etc.). Anthropogenic and natural stressors (i.e. coastal erosion, sea level rise, or overfishing, etc.) can transform, degrade, or limit the supply of ecosystem services. This study explores the vulnerability of Uramba MPA ecosystem services to anthropogenic and natural stressors. Stressors and ecosystems services were characterized by a literature review, an expert’s workshop, fieldtrips for validation, and georeferencing. To calculate the vulnerability of ecosystem services, the magnitude of each stressor, their risks, and their resilience... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Stressors; Resilience; Risk; Colombian Pacific; Tropical Eastern Pacific. |
| Ano: 2020 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612020000300095 |
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| Marchioretto,Lucas De Ross; Rossi,Andrea De; Amaral,Leonardo Oliboni do; Ribeiro,Ana Maria Alves de Souza. |
| ABSTRACT: Until few years ago there were limited options of apple rootstocks commercially available for Brazilian growers; although, new series of Geneva® rootstocks introduced recently present desirable features such as vigor control and wider lateral branch angle. On the main apple producing regions of Brazil, intermittent rainfall eventually occurs and waterlogged condition is frequent especially in high clay oxisols; in addition, little is known about the tolerance of rootstocks M.9, Marubakaido/M.9 interstock, G.202, G.213 and G.814 to waterlogging. Thus, the objective of this experiment was to evaluate the tolerance of these rootstocks to short-term waterlogging on root and aerial parameters. Potted ‘Maxi Gala’ apple plants were kept under 48 hours... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Flood; Hypoxia; Resilience; Root system.. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000900201 |
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| Registros recuperados: 253 | |
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