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| Registros recuperados: 22 | |
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| ORTIZ-MORENO,Martha Lucia; ROJAS,Nathaly; AGUILAR,Lina; LOPES,Luciano Elsinor; FERREIRA,Patricia A.; CARRETERO-PINZÓN,Xyomara; PIRES,José Salatiel R.. |
| ABSTRACT Plecturocebus ornatus is an endemic vulnerable species due to its population decline and its restricted range within the Eastern Plains of Colombia. This region is affected by deforestation as a result of legal and illegal economic activities. The aim of this work was to analyze the presence and abundance of P. ornatus during a period of urban and livestock production expansion (1986-2019) in Villavicencio, Colombia. This municipality is the most affected by land-use changes associated with regional economic development and represents 3.4 % of P. ornatus distribution's area. The analysis was performed using satellite images Landsat 4 and 8, with V-Late in ArcGIS 10.5 to describe landscape structure, and P. ornatus occurrence records, obtained... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Environmental management; Landscape ecology; Orinoquia; Plecturocebus ornatus; Primates. |
| Ano: 2022 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2022000200269 |
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| Oliveira,Carolina C. C.; Pereira,Lya C. S. M.; Lima,André; Shimabukuro,Yosio E.; Torezan,José Marcelo D.. |
| Hedgerows are linear structures found in agricultural landscapes that may facilitate dispersal of plants and animals and also serve as habitat. The aim of this study was to investigate the relationships among diversity and ecological traits of woody plants, hedgerow characteristics (size, age, and origin), and the structure of the surrounding Atlantic Forest landscape. Field data were collected from 14 hedgerows, and landscape metrics from 1000-m buffers surrounding hedgerows were recorded from a thematic map. In all sampled hedgerows, arboreal species were predominantly zoochoric and early-succession species, and hedgerow width was an important factor explaining the richness and abundance of this group of species. Connection with forest vegetation did not... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic Forest; Ecological corridors; Forest fragmentation; Hedgerows; Landscape ecology; Rural landscape; Seed dispersal; Woody plants. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000200239 |
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| Rocha,Ednaldo Cândido; Brito,Daniel; Silva,Paulo Machado e; Silva,Jhefferson; Bernardo,Paulo Vitor dos Santos; Juen,Leandro. |
| Abstract: Habitat loss and fragmentation are the main threats to the conservation of Cerrado biodiversity. The objective of this study was to evaluate the implications of habitat loss on the persistence of medium and large mammal species, considering the spatial and temporal changes (years 1985, 2000 and 2014) to the evaluated fragments. The study was carried out in 14 fragments (10.5 - 618 ha), located in Southeastern Goiás, Brazil. Records for 24 mammal species were obtained and revealed the two sites with the largest habitat amount in the landscape contained higher species richness than the remaining sites. The three mammal groups based on body mass (weight < 5 kg; weight between 5 and 20 kg; and weight > 20 kg) analyzed in this study showed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiversity conservation; Landscape ecology; Mammal fauna; Species richness. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000300208 |
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| Faria,Luiz Roberto Ribeiro; Silveira,Fernando Amaral da. |
| The composition of local orchid-bee faunas (Hymenoptera, Apidae, Euglossina) in open-vegetation domains is poorly known, making the ecology and biogeography of the group difficult to understand. The aim of this work was to answer the following questions: i) Is the orchid-bee fauna composition, species richness and abundance in the cerrado (Brazilian savanna) sensu stricto similar to that of riparian forests immersed in that domain? ii) Do species from neighboring forest domains use riparian forests as mesic corridors into the Cerrado? Two sites in cerrado s.s. and two in riparian forests were sampled monthly, one day per month, during one year (Nov/2003-Oct/2004) in northwestern Minas Gerais state, Brazil. Six aromatic compounds (β-ionone, 1,8-cineole,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Euglossina; Riparian forest; Gallery forest; Savanna; Landscape ecology. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000400009 |
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| Barbosa,João Paulo Rodrigues Alves Delfino; Rambal,Serge; Soares,Angela Maria; Mouillot,Florent; Nogueira,Joana Messias Pereira; Martins,Giordane Augusto. |
| The global changes are marked by alteration on the normal patterns of important biochemical and biophysical processes of the Earth. However, the real effects as well as the feedbacks of the global changes over vegetation are still unclear. Part of this uncertainty can be attributed to the inattention of stakeholders and scientists towards vegetation and its complex interrelations with the environment, which drive plant physiological processes in different space-time scales. Notwithstanding, some key subjects of the global changes could be better elucidated with a more plant physiological ecology approach. We discuss some issues related to this topic, going through some limitations of approaching vegetation as a static component of the biosphere as the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Landscape ecology; Vegetation modeling; Remote sensing; Scaling problems; Vulnerability. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542012000300001 |
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| Riitters, Kurt; U.S. Forest Service; kriitters@fs.fed.us; Wickham, James D; U.S. Environmental Protection Agency, National Exposure Research Laboratory; wickham.james@epa.gov; O'Neill, Robert; ; eoneill@attglobal.net; Jones, K. Bruce; U.S. Environmental Protection Agency, National Exposure Research Laboratory; jones.bruce@epa.gov; Smith, Elizabeth; U.S. Environmental Protection Agency, National Exposure Research Laboratory; smith.betsy@epa.gov. |
| We report an analysis of forest fragmentation based on 1-km resolution land-cover maps for the globe. Measurements in analysis windows from 81 km 2 (9 x 9 pixels, “small” scale) to 59,049 km 2 (243 x 243 pixels, “large” scale) were used to characterize the fragmentation around each forested pixel. We identified six categories of fragmentation (interior, perforated, edge, transitional, patch, and undetermined) from the amount of forest and its occurrence as adjacent forest pixels. Interior forest exists only at relatively small scales; at larger scales, forests are dominated by edge and patch conditions. At the smallest scale, there were significant differences in fragmentation among continents; within continents,... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Biogeography; Edge effect; Forest fragmentation; Geographic information systems; Global patterns; Land-cover map; Landscape ecology; Modeling; Perforated forest; Remote sensing; Satellite imagery; Spatial pattern. |
| Ano: 2000 |
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| Opdam, Paul; Alterra Landscape Centre, Wageningen University and Research; Department of Land Use Planning, Wageningen University; paul.opdam@wur.nl; Pouwels, Rogier; Alterra Landscape Centre, Wageningen University and Research; rogier.pouwels@wur.nl; Rooij, Sabine van; Alterra Landscape Centre, Wageningen University and Research; sabine.vanrooij@wur.nl; Vos, Claire C; Alterra Landscape Centre, Wageningen University and Research; claire.vos@wur.nl. |
| In highly developed regions, ecosystems are often severely fragmented, whereas the conservation of biodiversity is highly rated. Regional and local actor groups are often involved in the regional planning, but when making decisions they make insufficient use of scientific knowledge of the ecological system that is being changed. The ecological basis of regional landscape change would be improved if knowledge-based systems tailored to the cyclic process of planning and negotiation and to the expertise of planners, designers and local interest groups were available. If regional development is to be sustainable, goals for biodiversity must be set in relation to the actual and demanded patterns of ecosystems. We infer a set of prerequisites for the effective... |
| Tipo: Peer-Reviewed Synthesis |
Palavras-chave: Biodiversity targets; Ecosystem networks; Landscape ecology; Metapopulation persistence; Multifunctional landscapes; Multi-stakeholder decision making; Regional planning; Sustainable development. |
| Ano: 2008 |
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| Newton, Adrian C; Centre for Conservation Ecology and Environmental Change, Bournemouth University; anewton@bournemouth.ac.uk; Golicher, Duncan; El Colegio de la Frontera Sur; dgoliche@sclc.ecosur.mx; Gonzalez-Espinosa, Mario; ECOSUR; mgonzale@ecosur.mx; Huth, Andreas; UFZ; andreas.huth@ufz.de; Premoli, Andrea; Universidad Nacional del Comahue; andrea.premoli@gmail.com. |
| Although sustainable forest management (SFM) has been widely adopted as a policy and management goal, high rates of forest loss and degradation are still occurring in many areas. Human activities such as logging, livestock husbandry, crop cultivation, infrastructural development, and use of fire are causing widespread loss of biodiversity, restricting progress toward SFM. In such situations, there is an urgent need for tools that can provide an integrated assessment of human impacts on forest biodiversity and that can support decision making related to forest use. This paper summarizes the experience gained by an international collaborative research effort spanning more than a decade, focusing on the tropical montane forests of Mexico and the temperate... |
| Tipo: Peer-Reviewed Synthesis |
Palavras-chave: Biodiversity conservation; Environmental modeling; Landscape ecology; Latin America; Spatial analysis; Sustainable forest management. |
| Ano: 2009 |
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| 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’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’s Wild Coast between 1974 and 2001. The inhabitants of Nqabara are “traditional” 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 |
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| Interdisciplinary research frameworks can be useful in providing answers to the environmental challenges facing rural environments, but concrete implementation of them remains empirical and requires better control. We present our practical experience of an interdisciplinary research project dealing with non-industrial private forestry in rural landscapes. The theoretical background, management, and methodological aspects, as well as results of the project, are presented in order to identify practical key factors that may influence its outcomes. Landscape ecology plays a central role in organizing the project. The efforts allocated for communication between scientists from different disciplines must be clearly stated in order to earn reciprocal trust.... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Fragmented forest; Interdisciplinary research; Landscape ecology. |
| Ano: 2007 |
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| Cumming, Graeme S.; Percy FitzPatrick Institute, DST/NRF Center of Excellence, University of Cape Town, Rondebosch, 7701, South Africa; graeme.cumming@uct.ac.za; Hockey, Philip A. R.; Percy FitzPatrick Institute, DST/NRF Center of Excellence, University of Cape Town, Rondebosch, 7701, South Africa; phil.hockey@uct.ac.za; Bruinzeel, Leo W.; Percy FitzPatrick Institute, DST/NRF Center of Excellence, University of Cape Town, Rondebosch, 7701, South Africa; lbruinze@adu.uct.ac.za; Du Plessis, Morne A.; Percy FitzPatrick Institute, DST/NRF Center of Excellence, University of Cape Town, Rondebosch, 7701, South Africa; mornedup@vodamail.co.za. |
| Global analyses of the potential for avian influenza transmission by wild birds have ignored key characteristics of the southern African avifauna. Although southern Africa hosts a variety of migratory, Holarctic-breeding wading birds and shorebirds, the documented prevalence of avian influenza in these species is low. The primary natural carriers of influenza viruses in the northern hemisphere are the anatids, i.e., ducks. In contrast to Palearctic-breeding species, most southern African anatids do not undertake predictable annual migrations and do not follow migratory flyways. Here we present a simple, spatially explicit risk analysis for avian influenza transmission by wild ducks in southern Africa. We developed a risk value for each of 16 southern... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Anatidae; Avian influenza; Botswana; Ducks; Influenza; Landscape ecology; Namibia; Pathogen; South Africa; Virus; Waterfowl; Zimbabwe.. |
| Ano: 2008 |
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| Angeler, David G; Swedish University of Agricultural Sciences, Department of Aquatic Sciences and Assessment; david.angeler@slu.se; Allen, Craig R; U.S. Geological Survey, Nebraska Cooperative Fish and Wildlife Research Unit; School of Natural Resources, University of Nebraska, Lincoln; allencr@unl.edu; Johnson, Richard K; Swedish University of Agricultural Sciences, Department of Aquatic Sciences and Assessment; richard.johnson@slu.se. |
| Understanding the social and ecological consequences of species invasions is complicated by nonlinearities in processes, and differences in process and structure as scale is changed. Here we use discontinuity analyses to investigate nonlinear patterns in the distribution of biomass of an invasive nuisance species that could indicate scale-specific organization. We analyze biomass patterns in the flagellate Gonyostomum semen (Raphidophyta) in 75 boreal lakes during an 11-year period (1997-2007). With simulations using a unimodal null model and cluster analysis, we identified regional groupings of lakes based on their biomass patterns. We evaluated the variability of membership of individual lakes in regional biomass groups. Temporal trends in local and... |
| Tipo: Peer-Reviewed Insight |
Palavras-chave: Algal blooms; Alternative states; Biological invasions; Boreal lakes; Complex adaptive systems; Discontinuities; Landscape ecology; Panarchy; Resilience. |
| Ano: 2012 |
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| Registros recuperados: 22 | |
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