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| Registros recuperados: 63 | |
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| Pereira,Pedro H.C.; Ferreira,Beatrice P.; Rezende,Sérgio M.. |
| Seagrass beds are used by juvenile fishes in different ways, generally as nursery sites, shelter from predators, reducing competition and increasing availability of food resources, thus establishing a relationship of connectivity with other ecosystems. In the present study, the community structure of the ichthyofauna associated with seagrass beds on the Formoso River (Pernambuco - Brazil) was evaluated during the winter of 2008. Twenty-seven manual trawls (15 daytime and 12 nighttime) were performed, and a total of 358 fishes belonging to 18 families, 21 genus and 25 species were collected. The Catch Per Unit Effort (CPUE) by trawling average was 13.5 and 4.95 individuals per species per trawl. The most abundant families were Scaridae (n = 111),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Connectivity; Seagrass beds; Reef fishes; Diversity. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000300009 |
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| Thiele,Sabrina Campos; Milcharek,Oscar; Santos,Fábio Luis dos; Kaminski,Lucas Augusto. |
| This paper presents a list of species of butterflies (Lepidoptera: Hesperioidea and Papilionoidea) sampled in Porto Mauá municipality (27°34’S, 28°40’W), Rio Grande do Sul State, Brazil. Sampling was carried out monthly between March 2008 and March 2009. After 204 net-hours of sampling effort, a total of 1,993 individuals from 253 species were recorded. With a single additional expedition, eight new species were added, reaching a total of 261 species recorded in the region of Porto Mauá. These new reports and the species accumulation curves may indicate a much richer fauna. The distribution of richness among butterfly families is compared with other inventories in seasonal semi-deciduous forest areas in the Atlantic Forest. We also discuss the importance... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic Forest; Connectivity; Conservation; Seasonal semi-deciduous forest; Species richness. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032014000200211 |
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| Rodrigues,Luzia Cleide; Train,Sueli; Roberto,Maria do Carmo; Pagioro,Thomaz Aurélio. |
| Temporal variations of some limnological variables in limnetic and littoral regions of Patos lagoon, a "várzea" lake on the floodplain of the Upper Paraná River (22(0) 43'12"S e 53(0) 17'37"W), were studied in relation to hydrological and climatological factors. Measurements of water temperature, euphotic zone, suspended material, electrical conductivity, total alkalinity, pH, dissolved oxygen, carbon dioxide, total nitrogen, total Kjeldahl nitrogen, total phosphorus, dissolved phosphorus, reactive soluble phosphorus and chlorophyll a were taken monthly between March 1993 and February 1994. Results lend evidence to the importance of the hydrological regime on the dynamic of limnological variables in floodplain lakes. A dilution of nutrients in the lagoon,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Limnological variables; Flood pulse; Floodplain; Paraná River; Connectivity; Nutrients. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000600014 |
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| Flores Barrera, César Iván. |
| El jaguar es el felino más grande del continente Americano, por lo que tiene demandas alimenticias de grandes presas y hábitats extensos, esto propicia conflictos con los humanos debido a la fragmentación de su hábitat. En México se encuentra enlistado como en peligro de extinción en la NOM-059-SEMARNAT-2010. Por lo que es importante determinar si hay parches de hábitat que sean utilizados por el jaguar como corredores dentro de la Sierra Madre Oriental; específicamente, en la región que hay entre la Sierra del Abra-Tanchipa y la Sierra de Cerro Alto. El objetivo de este estudio fue determinar la existencia de un corredor para jaguar (Panthera onca) entre las Sierras del Abra-Tanchipa y Cerro Alto, del municipio de Ciudad Valles, San Luis Potosí. El... |
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Palavras-chave: Jaguar; Corredores; Conectividad; Hábitat; Fragmentación; Corridors; Connectivity; Habitat; Fragmentation; Ganadería; Maestría. |
| Ano: 2014 |
URL: http://hdl.handle.net/10521/2385 |
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| Kondolf, G. Mathias; University of California, Berkeley; kondolf@berkeley.edu; Boulton, Andrew J.; Ecosystem Management, University of New England; aboulton@une.edu.au; O'Daniel, Scott; University of California-Santa Barbara; sodaniel@icess.ucsb.edu; Poole, Geoffrey C; Eco-metrics, Inc. and University of Georgia; gpoole@eco-metrics.com; Rahel, Frank J.; University of Wyoming; frahel@uwyo.edu; Stanley, Emily H.; University of Wisconsin; ehstanley@wisc.edu; Wohl, Ellen; Colorado State University; ellenw@cnr.colostate.edu; Carlstrom, Julia; National Board of Fisheries; julia.carlstrom@fiskeriverket.se; Cristoni, Chiara; ; c.cristoni@tiscali.it; Huber, Harald; University of Munich; harry.nat@t-online.de; Louhi, Pauliina; Finnish Game and Fisheries Research Institute; pauliina.louhi@rktl.fi; Nakamura, Keigo; Public Works Research Institute, Japan; knakamu@pwri.go.jp. |
| Human impacts to aquatic ecosystems often involve changes in hydrologic connectivity and flow regime. Drawing upon examples in the literature and from our experience, we developed conceptual models and used simple bivariate plots to visualize human impacts and restoration efforts in terms of connectivity and flow dynamics. Human-induced changes in longitudinal, lateral, and vertical connectivity are often accompanied by changes in flow dynamics, but in our experience restoration efforts to date have more often restored connectivity than flow dynamics. Restoration actions have included removing dams to restore fish passage, reconnecting flow through artificially cut-off side channels, setting back or breaching levees, and removing fine sediment deposits... |
| Tipo: Peer-Reviewed Insight |
Palavras-chave: Connectivity; Flow dynamics; Hyporheic zone; River restoration.. |
| Ano: 2006 |
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| Johnson, Craig R; ; craig.johnson@utas.edu.au. |
| The characteristic, or natural, length scales of a spatially dynamic ecological landscape are the spatial scales at which the deterministic trends in the dynamic are most sharply in focus. Given recent development of techniques to determine the characteristic length scales (CLSs) of real ecological systems, I explore the potential for using CLSs to address three important and vexing issues in applied ecology, viz. (i) determining the optimum scales to monitor ecological systems, (ii) interpreting change in ecological communities, and (iii) ascertaining connectivity between species in complex ecologies. In summarizing the concept of characteristic length scales as system-level scaling thresholds, I emphasize that the primary CLS is, by definition, the... |
| Tipo: Peer-Reviewed article |
Palavras-chave: Attractor reconstruction; Characteristic length scale; Community change; Connectivity; Monitoring; Natural length scale; Scaling threshold. |
| Ano: 2009 |
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| Shine, Richard; University of Sydney; rics@bio.usyd.edu.au; Lemaster, Michael; ; lemasterm@mail.science.orst.edu; Wall, Michael; ; mwall@bio.usyd.edu.au; Langkilde, Tracy; ; langkild@bio.usyd.edu.au; Mason, Robert; ; masonr@science.oregonstate.edu. |
| If animals avoid road surfaces or are unable to follow conspecific trails across such surfaces, previously continuous populations may be fragmented. We gathered data on the effects of a small (4-m wide) gravel road on the behavior and trail-following abilities of garter snakes (Thamnophis sirtalis parietalis) in Manitoba, central Canada. As expected, the road surface had less vegetation cover, a more open canopy and, thus, higher incident radiation than did the surrounding grassland. Contrary to expectations, however, substrate temperatures were lower on the road than in its surrounds, because of the higher reflectivity of the road's surface. On a nearby asphalt road, substrate temperatures were relatively high on the road surface only in the evening, as... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Behavior; Connectivity; Habitat fragmentation; Pheromones; Reproduction; Reptile. |
| Ano: 2004 |
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| Robins, Garry; Melbourne School of Psychological Sciences, University of Melbourne; garrylr@unimelb.edu.au; McAllister, Ryan R. J.; CSIRO; ryan.mcallister@csiro.au; Guerrero, Angela M.; Australian Research Council Centre of Excellence for Environmental Decisions, University of Queensland; School of Biological Sciences, University of Queensland; a.guerrero@uq.edu.au; Crona, Beatrice; Global Economic Dynamics and the Biosphere, Royal Swedish Academy of Sciences; Stockholm Resilience Centre, Stockholm University; beatrice.crona@su.se; Lubell, Mark; Department of Environmental Science and Policy, University of California at Davis; mnlubell@ucdavis.edu. |
| When environmental processes cut across socioeconomic boundaries, traditional top-down government approaches struggle to effectively manage and conserve ecosystems. In such cases, governance arrangements that foster multiactor collaboration are needed. The effectiveness of such arrangements, however, depends on how well any ecological interdependencies across governed ecosystems are aligned with patterns of collaboration. This inherent interdisciplinary and complex problem has impeded progress in developing a better understanding of how to govern ecosystems for conservation in an increasingly interconnected world. We argue for the development of empirically informed theories, which are not only able to transcend disciplinary boundaries, but are also... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Collaborative governance; Connectivity; Exponential random graph models (ERGM); Interdisciplinary; Networks; Social-ecological fit; Social-ecological networks; Social-ecological systems. |
| Ano: 2016 |
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| Biggs, Duan; ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville Australia; ancientantwren@gmail.com; Biggs, Reinette (Oonsie); Stockholm Resilience Centre, Stockholm University, Sweden; oonsie.biggs@stockholmresilience.su.se; Dakos, Vasilis; Department of Aquatic Ecology & Water Quality Management, Wageningen University; vasileios.dakos@wur.nl; Scholes, Robert J; CSIR Natural Resources and the Environment, Pretoria, South Africa; BScholes@csir.co.za; Schoon, Michael; School of Human Evolution and Social Change, Arizona State University; Michael.Schoon@asu.edu. |
| An increase in the frequency and intensity of environmental crises associated with accelerating human-induced global change is of substantial concern to policy makers. The potential impacts, especially on the poor, are exacerbated in an increasingly connected world that enables the emergence of crises that are coupled in time and space. We discuss two factors that can interact to contribute to such an increased concatenation of crises: (1) the increasing strength of global vs. local drivers of change, so that changes become increasingly synchronized; and (2) unprecedented potential for the propagation of crises, and an enhanced risk of management interventions in one region becoming drivers elsewhere, because of increased connectivity. We discuss the... |
| Tipo: Peer-Reviewed Insight |
Palavras-chave: Concatenation; Connectivity; Crisis; Disaster; Food price crisis; Governance; Learning; Thresholds. |
| Ano: 2011 |
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| Jordão,Juliana Costa; Bondioli,Ana Cristina Vigliar; Guebert,Flavia Maria; Thoisy,Benoit de; Toledo,Lurdes Foresti de Almeida. |
| Sea turtles are marine reptiles that undertake long migrations through their life, with limited information regarding juvenile stages. Feeding grounds (FGs), where they spend most of their lives, are composed by individuals from different natal origins, known as mixed stock populations. The aim of this study was to assess genetic composition, natal origins and demographic history of juvenile green turtles (Chelonia mydas) at the Paranaguá Estuarine Complex (PEC), Brazil, considered a Natural World Heritage site. Tissue samples of stranded animals were collected (n = 60), and 700 bp mitochondrial DNA sequences were generated and compared to shorter sequences from previously published studies. Global exact tests of differentiation revealed significant... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Chelonia mydas; MtDNA; Feeding grounds; Mixed stock analysis; Connectivity. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572015000300346 |
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| Registros recuperados: 63 | |
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