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| Registros recuperados: 68 | |
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| Rice, Jake; Rochet, Marie-joelle. |
| We develop a framework for the objective selection of a suite of indicators for use in fisheries management. The framework encompasses eight steps, and provides guidance on pitfalls to be avoided at each step. Step I identifies user groups and their needs, featuring the setting of operational objectives, and Step 2 identifies a corresponding list of candidate indicators. Step 3 assigns weights to nine screening criteria for the candidate indicators: concreteness, theoretical basis, public awareness, cost, measurement, historic data, sensitivity, responsiveness, and specificity. Step 4 scores the indicators against the criteria, and Step 5 summarizes the results. Steps 3-5 offer technical aspects on which guidance is provided, including scoring standards... |
| Tipo: Text |
Palavras-chave: Scoring; Objectives; Indicators; Guidelines; Framework; Ecosystem; Criteria. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-484.pdf |
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| Calvo,Jorge O.; Porfiri,Juan D.; González-Riga,Bernardo J.; Kellner,Alexander W.A.. |
| A unique site at the northern area of Patagonia (Neuquén, Argentina) reveals a terrestrial ecosystem preserved in a detail never reported before in a Late Cretaceous deposit. An extraordinary diversity and abundance of fossils was found concentrated in a 0.5 m horizon in the same quarry, including a new titanosaur sauropod, Futalognkosaurus dukei n.gen., n.sp, which is the most complete giant dinosaur known so far. Several plant leaves, showing a predominance of angiosperms over gymnosperms that likely constituted the diet of F. dukei were found too. Other dinosaurs (sauropods, theropods, ornithopods), crocodylomorphs, pterosaurs, and fishes were also discovered, allowing a partial reconstruction of this Gondwanan continental ecosystem. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dinosauria; Titanosauria; Ecosystem; Taphonomy; Upper Cretaceous; Gondwana; Patagonia; Argentina. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652007000300013 |
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| Goulletquer, Philippe. |
| On estime à l'heure actuelle que la consommation de poisson par habitant devrait doubler d'ici à 2030, comme elle l'a fait entre 1973 et 2003. Que devons-nous faire pour mieux préserver (voire accroître) les réserves de poisson, qui sont en diminution constante ? Qu'en est-il de l'aquaculture ? Peut-elle répondre à cette demande croissante, et si oui quel en sera l'impact environnemental ? Comment les pays pauvres peuvent-ils en particulier exiger des sociétés qui la pratiquent de prendre en charge les frais supplémentaires liés à une production d'aquaculture durable ? |
| Tipo: Text |
Palavras-chave: Biodiversiy; Ecosystem; Aquaculture; Fisheries. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/acte-6210.pdf |
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| Henley, Sian F.; Cavan, Emma L.; Fawcett, Sarah E.; Kerr, Rodrigo; Monteiro, Thiago; Sherrell, Robert M.; Bowie, Andrew R.; Boyd, Philip W.; Barnes, David K. A.; Schloss, Irene R.; Marshall, Tanya; Flynn, Raquel; Smith, Shantelle. |
| The Southern Ocean plays a critical role in regulating global climate as a major sink for atmospheric carbon dioxide (CO2), and in global ocean biogeochemistry by supplying nutrients to the global thermocline, thereby influencing global primary production and carbon export. Biogeochemical processes within the Southern Ocean regulate regional primary production and biological carbon uptake, primarily through iron supply, and support ecosystem functioning over a range of spatial and temporal scales. Here, we assimilate existing knowledge and present new data to examine the biogeochemical cycles of iron, carbon and major nutrients, their key drivers and their responses to, and roles in, contemporary climate and environmental change. Projected increases in... |
| Tipo: Text |
Palavras-chave: Southern Ocean; Biogeochemistry; Primary production; Iron; Nutrients; Carbon; Ecosystem; Ocean acidification. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00676/78831/81113.pdf |
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| Food and Agriculture Organization of the United Nations (FAO),World Conservation Monitoring Centre (WCMC),Center for International Earth Science Information Network (CIESIN),World Resources Institute,International Food Policy Research Institute,Global Maritime Boundaries Database (GMBD),The International Society for Mangrove Ecosystems (ISME), |
| Tipo: Journal Contribution |
Palavras-chave: Country profile; Angola; Ecosystem; Ecosystems. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/570 |
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| Wallace, Rodrick; ; wallace@pi.cpmc.columbia.edu. |
| Ecosystem resilience theory permits novel exploration of developmental psychiatric and chronic physical disorders. Structured psychosocial stress, and similar noxious exposures, can write distorted images of themselves onto child growth, and, if sufficiently powerful, adult development as well, initiating a punctuated life course trajectory to characteristic forms of comorbid mind/body dysfunction. For an individual, within the linked network of broadly cognitive psysiological and mental subsystems, this occurs in a manner almost exactly similar to resilience domain shifts affecting a stressed ecosystem, suggesting that reversal or palliation may often be exceedingly difficult. Thus resilience theory may contribute significant new perspectives to the... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Chronic disease; Cognition; Comorbidity; Developmental disorder; Ecosystem; Resilience. |
| Ano: 2008 |
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| FALESI, I. C.. |
| A pesquisa foi realizada em áreas com pastos de idades diferentes, desde meses de idade (formação) ate 11 anos, tomando-se a área com floresta natural como elemento de comparação (testemunha). Foram coletadas amostras de solos de 0-20 cm em cada uma dessas áreas, alem da coleta de perfis pedagógicos ate a uma profundidade de 1,50 m. Apos a obtenção das analises no laboratório, constatou-se que vários nutrientes e índices ou valores, sofreram acréscimos quando o solo foi cultivado com pastagem, melhorando portanto, as suas propriedades químicas. Os elementos que mais se evidenciaram, foram: cálcio, magnésio, fosforo, alumínio, e os índices de pH, V (saturação de bases), S (soma de bases) e saturação de alumínio. Os quadros de analises e gráficos constantes... |
| Tipo: Séries anteriores (INFOTECA-E) |
Palavras-chave: Brasil; Sown pasture; Ecosystem; Fertility.; Clima; Ecologia; Ecossistema; Fertilidade; Geologia; Pastagem Cultivada; Topografia; Solo; Vegetação.; Amazonia; Ecology; Geology; Climate; Topography; Soil; Vegetation.. |
| Ano: 1976 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/385693 |
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| Fromentin, Jean-marc; Fonteneau, Alain; Restrepo, Victor. |
| During the last SCRS plenary meeting, the sub-committee on environment suggested to present a document on the ‘Ecosystem Approach to Fisheries’ (EAF). This document firstly recalls the general scientific and institutional background of EAF, then we propose a synoptic view of EAF, including four main domains: governance, exploitation, resources and impacts on ecosystems. The way that EAF is tackled within the various tuna commissions is then summarised. Finally, we rapidly examine the way the SCRS could cope with EAF issues and we suggest to merge the sub-committee on environment with this on by-catch into a single subcommittee on ecosystem. |
| Tipo: Text |
Palavras-chave: Ecosystem; Resources; Exploitation; Governance; Environment; By-catch. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/00192/30334/28809.pdf |
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| Richardson, Robert B.. |
| Food security in developing countries depends in part on the sustainable use of natural resources. Food security is usually examined through three dimensions, namely the availability, access, and utilization of food. Ecosystems directly and indirectly support each of these dimensions through the provision of critical ecosystem services that facilitate agricultural production, create income- generating opportunities, and provide energy for cooking. However, in some cases, household uses of natural resources undermine particular elements of food security, hindering national poverty reduction strategies and threatening the sustainability of critical ecosystem functions. I examine the role of ecosystem services in rural food security through the lens of its... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Environmental sustainability; Ecosystem; Food security; Environmental Economics and Policy; Food Security and Poverty. |
| Ano: 2011 |
URL: http://purl.umn.edu/98782 |
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| Casazza, Michael L; U.S. Geological Survey; mike_casazza@usgs.gov; Overton, Cory T; U.S. Geological Survey; coverton@usgs.gov; Bui, Thuy-Vy D; U.S. Geological Survey; tbui@usgs.gov; Hull, Joshua M; U.S. Fish and Wildlife Service; University of California, Davis; josh_hull@fws.gov; Albertson, Joy D; U.S. Fish and Wildlife Service; Joy_Albertson@fws.gov; Bloom, Valary K; U.S. Fish and Wildlife Service, Recovery Branch; valary_bloom@fws.gov; Bobzien, Steven; East Bay Regional Park District; sbobzien@ebparks.org; McBroom, Jennifer; Invasive Spartina Project; jtmcbroom@spartina.org; Latta, Marilyn; California State Coastal Conservancy; marilyn.latta@scc.ca.gov; Olofson, Peggy; San Francisco Estuary Invasive Spartina Project; prolofson@spartina.org; Rohmer, Tobias M; Invasive Spartina Project; Olofson Environmental Inc.; toby@spartina.org; Schwarzbach, Steven; U.S. Geological Survey; steven_schwarzbach@usgs.gov; Strong, Donald R; Department of Evolution and Ecology, University of California, Davis; drstrong@ucdavis.edu; Grijalva, Erik; University of California, Davis; ekgrijalva@ucdavis.edu; Wood, Julian K; Point Blue Conservation Science; jwood@pointblue.org; Skalos, Shannon M; U.S. Geological Survey; sskalos@usgs.gov; Takekawa, John; National Audubon Society; jtakekawa@audubon.org. |
| Management actions to protect endangered species and conserve ecosystem function may not always be in precise alignment. Efforts to recover the California Ridgway’s Rail (Rallus obsoletus obsoletus; hereafter, California rail), a federally and state-listed species, and restoration of tidal marsh ecosystems in the San Francisco Bay estuary provide a prime example of habitat restoration that has conflicted with species conservation. On the brink of extinction from habitat loss and degradation, and non-native predators in the 1990s, California rail populations responded positively to introduction of a non-native plant, Atlantic cordgrass (Spartina alterniflora). California rail populations were in substantial decline when the non-native Spartina... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Ecosystem; Endangered; Restoration; California Ridgway’ S Rail; Spartina. |
| Ano: 2016 |
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| MONTEIRO, J. de A.. |
| Este trabalho teve como objetivo, mais do que apontar impactos economicos, levantar pontos para reflexao. Aborda, em termos qualitativos, impactos economicos e sociais a partir de dois angulos, tendo como centro de origem o estresse ambiental. O primeiro angulo considera as consequencias das existencia de restricoes no ambiente a producao agropecuaria. O segundo angulo fala dos efeitos decorrentes da politica de modernizacao que tem por objetivo a superacao das restricoes, tendo como cenario o modelo de desenvolvimento agricola. Ensaia algumas timidas quantificacoes para mostrar essa realidade e, ao mesmo tempo, revelar dificuldades metodologicas e de quantificacao real de tais impactos. Nesse aspectos, a avaliacao economico-social apresenta serias... |
| Tipo: Parte de livro |
Palavras-chave: Estresse ambiental; Ecosistema; Maize; Ecosystem; Economic aspects.; Milho; Stress; Zea Mays.. |
| Ano: 1995 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/475999 |
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| Registros recuperados: 68 | |
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