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Registros recuperados: 196
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Sustainability of rice in the global food system International Rice Research Institute
Dowling, N.G.; Greenfield, S.M.; Fischer, K.S.; International Rice Research Institute.
v, 404 p. : ill.
Tipo: Book Palavras-chave: Research; Sustainability; Food security; Production; Biodiversity; Ecosystems; Asia.
Ano: 1998 URL: http://hdl.handle.net/10269/256
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Sustainability of the Benguela: ex Africa semper aliquid novi OceanDocs
Shannon, L.V.; O’Toole, M.J..
The Benguela Current ecosystem is situated along the coast of south western Africa, stretching from east of the Cape of Good Hope, in the south, northwards into Angola waters and encompassing the full extent of Namibia’s marine environment. It is one of the four major coastal upwelling ecosystems of the world which lie at the eastern boundaries of the oceans. Like the Humboldt, California and Canary systems, the Benguela is an important centre of marine biodiversity and marine food production. Its distinctive bathymetry, hydrography, chemistry and trophodynamics combine to make it one of the most productive ocean areas in the world, with a mean annual primary productivity of 1.25 kilograms of carbon per square metre per year—about six times higher than the...
Tipo: Book Section Palavras-chave: Ecosystems; Sustainability.
Ano: 2003 URL: http://hdl.handle.net/1834/396
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Sustainable community-based management and conservation of mangrove ecosystems in Cameroon. OceanDocs
Mangrove ecosystems on the coast of Cameroon are valuable both for their contributions to local livelihoods and the globally important biodiversity that they contain. However, these areas are threatened by a number of development pressures as well as unsustainable management and harvesting practices of the local communities living there. This project aims to strengthen protection and reduce degradation in these areas by supporting inter-sectoral co-ordination and collaboration (within an agreed national framework) and by helping local communities to redirect local economic activities towards activities that both improve their livelihoods as well as assist with the conservation of globally important biodiversity found in these areas. At the national level,...
Tipo: Report Palavras-chave: Mangroves; Biodiversity; Ecosystems.
Ano: 2011 URL: http://hdl.handle.net/1834/5478
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Sustentabilidade em ecossitemas de pastagem para a produçao de caprinos e ovinos. Infoteca-e
CAVALCANTE, A. C. R..
bitstream/item/86467/1/Midia-Sustentabilidade-em-ecossitemas.pdf
Tipo: Artigo de divulgação na mídia (INFOTECA-E) Palavras-chave: Brasil; Sustainability.; Caprino; Ecossistema; Manejo; Pastagem Cultivada; Ovino; Sistema de Produção.; Sheep; Goats; Pastures; Ecosystems; Brazil..
Ano: 2009 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/578240
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Terrestrial ecosystem modelling studies on the energy, water and carbonbalance of a seasonal semi-deciduous dry neotropical forest in Brazil. Repositório Alice
NÓBREGA, R.; VERHOEF, A.; MOURA, M. S. B. de; SOUZA, R.; PRENTICE, I. C..
We aim to develop a transferable terrestrial ecosystem model that could be applied as a scientific and management tool for Caatinga and other dry forests.
Tipo: Artigo de periódico Palavras-chave: Floresta neotropical seca; Caatinga; Vegetação Nativa; Degradação Ambiental; Ecossistema; Ecosystems.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1114352
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The EMSO-ERIC Pan-European Consortium: Data Benefits and Lessons Learned as the Legal Entity Forms ArchiMer
Best, Mairi M. R.; Favali, Paolo; Beranzoli, Laura; Blandin, Jerome; Cagatay, Namik M.; Cannat, Mathilde; Jose Danobeitia, Juan; Delory, Eric; De Miranda, Jorge M. A.; Del Rio Fernandez, Joaquin; De Stigter, Henko; Gillooly, Mick; Grant, Fiona; Hall, Per O. J.; Hartman, Susan; Hernandez-brito, Joaquin; Lanteri, Nadine; Mienert, Juergen; Oaie, Gheorge; Piera, Jaume; Radulescu, Vlad; Rolin, Jean-francois; Ruhl, Henry A.; Waldmann, Christoph.
The European Multidisciplinary Seafloor and water-column Observatory (EMSO) European Research Infrastructure Consortium (ERIC) provides power, communications, sensors, and data infrastructure for continuous, high-resolution, (near-)real-time, interactive ocean observations across a multidisciplinary and interdisciplinary range of research areas including biology, geology, chemistry, physics, engineering, and computer science, from polar to subtropical environments, through the water column down to the abyss. Eleven deep-sea and four shallow nodes span from the Arctic through the Atlantic and Mediterranean, to the Black Sea. Coordination among the consortium nodes is being strengthened through the EMSOdev project (H2020), which will produce the EMSO Generic...
Tipo: Text Palavras-chave: Ocean Observatory Consortium; Europe; Geohazards; Climate change; Ecosystems.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00343/45442/45806.pdf
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The European Landing Obligation. Reducing Discards in Complex, Multi-Species and Multi-Jurisdictional Fisheries ArchiMer
Uhlmann, Sven Sebastian; Ulrich, Clara; Kennelly, Steven J.
This open access book provides a comprehensive examination of the European Landing Obligation policy from many relevant perspectives. It includes evaluations of its impacts at economical, socio-cultural, ecological and institutional levels. It also discusses the feasibility and benefits of several potential mitigation strategies. The book was timely published, exactly at the time where the Landing Obligation was planned to be fully implemented. This book is of significant interest to all stakeholders involved, but also to the general public of Europe and to other jurisdictions throughout the world that are also searching for ways to deal with by-catch and discard issues.
Tipo: Text Palavras-chave: Discard; Fish By-catch; Marine spatial planning; European waters; Landing obligation; Ecosystems; Fish stocks; NGO; Fisheries policy; MINOUW; DiscardLess; Open Access.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00589/70084/68066.pdf
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The ICES North Sea Benthos Project 2000: aims, outcomes and recommendations ArchiMer
Rees, Hubert; Eggleton, Jacqueline D.; Vanden Berghe, Edward; Aldridge, John; Bergman, Magda J. N.; Boalm,; Cochrane, Sabine; Craeymeersch, Johan A.; Degraer, Steven; Desroy, Nicolas; Dewarumez, Jean-marie; Duineveld, Gca; Essink, Karel; Goethals,; Hillewaert, Hans; Irion,; Kershaw, Peter; Kroncke, Ingrid; Lavayele, Marc; Mason, Claire; Nehring, Stefan; Newell, Richard; Oug, Eivind; Pohlman, Thomas; Reiss, Henning; Robertson, Mike; Rumorh, Heye; Schratzberger, Michaela; Smith,; Van Dalfsen, Jan; Van Hoey, Gert; Vincx, Magda; Willems, Wouter.
The ICES Study Group on the North Sea Benthos Project 2000 undertook to integrate recent (1999–2002) macrobenthic infaunal and environmental data from various national sources. The main aim was to compare the outcome with that of the ICES North Sea Benthos Survey conducted in 1986, to identify any significant changes and their likely causes. In the process, the exercise yielded valuable lessons for the conduct of international collaborative programmes, as well as insights into the utility of a range of interpretational tools. These are timely in view of increasing requirements for periodic sea-wide assessments of quality status to meet international obligations, such as those under OSPAR, ICES, HELCOM, and EU auspices for European waters. This paper...
Tipo: Text Palavras-chave: Macrobenthos; Infauna; Sediments; Communities; Ecosystems; North Sea.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/00158/26893/25024.pdf
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The lower Krishna Basin trajectory: relationships between basin development and downstream environmental degradation AgEcon
Venot, Jean-Philippe; Sharma, Bharat R.; Rao, Kamineni V.G.K..
Basin water development and rural dynamics in the Krishna Basin have led to a degradation of downstream ecosystems manifesting itself by salinizing soil and groundwater, increasing pollution, disappearing mangroves and desiccating wetlands. Reversing this evolution requires the formal recognition of the environment as a water user in its own right and the implementation of an environmental water provision. This provision should be based on a two-tier allocation system with assured discharges in the irrigation canals of the delta and to the ocean. This will lead to further commitment of water resources but this is needed to reconcile the social, economic and environmental objectives of a sustainable development. Other measures facilitating integrated...
Tipo: Report Palavras-chave: River basin development; Lakes; Environmental degradation; Ecosystems; Mangroves; Water allocation; Groundwater; Water quality; Salinity; Irrigated farming; Institutions; Irrigation canals; Rural development; Agribusiness; Crop Production/Industries; Environmental Economics and Policy; Land Economics/Use; Risk and Uncertainty.
Ano: 2008 URL: http://purl.umn.edu/44515
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The problems of application of radiocarbon method for estimation of primary production in oligotrophic waters ArchiMer
Krupatkina, D; Berland, B; Maestrini, S.
The errors in primary production estimation by the radiocarbon method may differ from one trophic region to another. Such supposition is based on unequal phytoplanktonic structural characteristics of these regions. These errors are likely to appear rather significant in oligotrophic waters predominated by nano- and ultranano-plankton (the so-called picoplankton). The organic substance of oligotrophic waters is obviously produced by picoplankton for the most part, the need for clarifying possible errors when estimating primary production by the radiocarbon method, which is the purpose of the present work is urgent. For these topics in oligotrophic waters, measurements were carried out in two ways: (1) according to the generally accepted pattern (Sorokin,...
Tipo: Text Palavras-chave: Methodology; Community composition; Nutrient cycles; Phytoplankton; Ecosystems; Carbon 14; Primary production; Analytical techniques.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-1522.pdf
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The Tropical Atlantic Observing System ArchiMer
Foltz, G. R.; Brandt, P.; Richter, I.; Rodríguez-fonseca, B.; Hernandez, F.; Dengler, M.; Rodrigues, R. R.; Schmidt, J. O.; Yu, L.; Lefevre, N.; Da Cunha, L. Cotrim; Mcphaden, M. J.; Araujo, M.; Karstensen, J.; Hahn, J.; Martín-rey, M.; Patricola, C. M.; Poli, P.; Zuidema, P.; Hummels, R.; Perez, Rc; Hatje, V.; Lübbecke, J. F.; Polo, I.; Lumpkin, R.; Bourlès, Bernard; Asuquo, F. E.; Lehodey, P.; Conchon, A.; Chang, P.; Dandin, P.; Schmid, C.; Sutton, A.; Giordani, H.; Xue, Y.; Illig, S.; Losada, T.; Grodsky, S. A.; Gasparin, F.; Lee, T.; Mohino, E.; Nobre, P.; Wanninkhof, R.; Keenlyside, N.; Garcon, V.; Sánchez-gómez, E.; Nnamchi, H. C.; Drévillon, M.; Storto, A.; Remy, E.; Lazar, A.; Speich, S.; Goes, M.; Dorrington, T.; Johns, W. E.; Moum, J. N.; Robinson, C.; Perruche, Coralie; De Souza, R. B.; Gaye, A. T.; López-parages, J.; Monerie, P.-a.; Castellanos, P.; Benson, N. U.; Hounkonnou, M. N.; Duhá, J. Trotte; Laxenaire, R.; Reul, Nicolas.
The tropical Atlantic is home to multiple coupled climate variations covering a wide range of timescales and impacting societally relevant phenomena such as continental rainfall, Atlantic hurricane activity, oceanic biological productivity, and atmospheric circulation in the equatorial Pacific. The tropical Atlantic also connects the southern and northern branches of the Atlantic meridional overturning circulation and receives freshwater input from some of the world’s largest rivers. To address these diverse, unique, and interconnected research challenges, a rich network of ocean observations has developed, building on the backbone of the Prediction and Research Moored Array in the Tropical Atlantic (PIRATA). This network has evolved naturally over time...
Tipo: Text Palavras-chave: Tropical Atlantic Ocean; Observing system; Weather; Climate; Hurricanes; Biogeochemistry; Ecosystems; Coupled model bias.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00494/60612/64096.pdf
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Tides, tidal currents and their effects on the intertidal ecosystem ofthe southern bay, lnhaca Island, Mozambique OceanDocs
Rydberg, L.; de Boer, W.F.; Saide, V..
Sediment characteristics and tidal currents were studied in the 1500 ha intertidal area south of Inhaca Island, Mozambique. Thetide is semi-diurnal with a range at spring of about 3 m. The area connects directly to the ocean through the Ponta Torres Straitand (indirectly) through several narrow tidal channels ending up in Maputo Bay. Velocities of up to 0.75 m s-1 were measured in the Ponta Tones strait. After Low Water, Indian ocean water starts entering the tidal flats, while entrance from the MaputoBay side is delayed by one to several hours. With only one tide gauge and one current meter at hand, we found indications of ahigher mean sea level on the oceanic side (probably due to ocean wave set up) and a mean flow in the Ponta Torres Straitdirected...
Tipo: Journal Contribution Palavras-chave: Tidal currents; Ecosystems.
Ano: 2000 URL: http://hdl.handle.net/1834/701
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Towards the development of environmental indices for the Namibian shelf, with particular reference to fisheries management. OceanDocs
Bartholomae, Ch.; Van der Plas, A..
The Namibian Ministry of Fisheries and Marine Resources has the task of collecting and providing relevant oceanographic information for management of their fisheries. However, quality information is difficult to provide because of the complexity of the processes involved in the Namibian marine ecosystem. Nonetheless, there are oceanographic data available that can contribute to fisheries management by improving the general understanding of important oceanographic processes related to fisheries. The focus of this paper is on the development of simple environmental indices that can serve as a measurement or proxy of the state or intensity of certain important oceanographic processes or variables for temporal comparison. These indices relate to oceanographic...
Tipo: Journal Contribution Palavras-chave: Fisheries management; Marine resources; Oceanographic data; Chlorophylls; Upwelling; Spatial variations; Sardine fisheries; Water temperature; El Nino phenomena; Ecosystems; Fish stocks; Surface temperature; Oxygen; Phytoplankton; Biomass; Seasonal variations; Fronts; Perturbations; Commercial fisheries; Catchability; Remote sensing; Chlorophylls; Dissolved oxygen; Environmental impact.
Ano: 2007 URL: http://hdl.handle.net/1834/4971
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TRAJETORIA DO DESENVOLVIMENTO:REVISITANDO O PASSADO PARA REPENSAR O FUTURO AgEcon
Cazella, Ademir Antonio; Goncalves, Diogo Alvim; Cerdan, Claire.
Este artigo tem como objetivo analisar em que medida os problemas da pobreza e da degradação ambiental da região de São Joaquim, em Santa Catarina, vêm sendo historicamente gerenciados pelos agentes de planejamento e gestão do desenvolvimento regional. Para tanto, recuperamos a trajetória do desenvolvimento desde a colonização até hoje. A partir desta trajetória, investigamos os recursos (naturais e humanos) mobilizados para impulsionar as estratégias de desenvolvimento adotadas ao longo do tempo. As reflexões sobre o histórico e cenário atual da região levaram à conclusão de que os problemas destacados não representam uma prioridade nas agendas de planejamento do desenvolvimento regional. As conseqüências socioambientais do desenvolvimento regional são...
Tipo: Conference Paper or Presentation Palavras-chave: Desenvolvimento; Gestão; Ecossistemas; Socioambiental; Development; Management; Ecosystems; Nature-society; Food Security and Poverty; International Development.
Ano: 2008 URL: http://purl.umn.edu/109800
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Transfer of seston to zooplankton in marine ecosystems OMA
Tackx, M..
When considering zooplankton feeding as one of the pathways involved in the transfer of substances in marine ecosystems, it is important to study the composition and size distribution of the seston: firstly, the elements in which one is interested may be associated with different types and sizes of particles; secondly, particle size and composition are important factors in relation t o the feeding process of the zooplankton itself. High speed cinematographic studies have recently revealed that copepods use two different mechanisms for feeding. Small particles (< 12 pm) are collected by continuous low amplitude movements of the second maxillae and combing of the appendages. Larger particles are detected and collected individually by means of a specific...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ecosystems; Seston; Zooplankton.
Ano: 1984 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3273
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Trends in the distribution of macroalgae in a bleached Kenyan reef ecosystem OceanDocs
Ndirangu, S.; Uku, J.; Muthama, C..
In May 1999, two sites were selected within the Mombasa Marine Park and Reserve for the study of macroalgal succession due to bleaching. One of the sites was Starfish, which lies within the Mombasa Marine Park and is protected from fishing and the other site was Ras Iwatine, which lies in the Reserve area and is Subjected to fishing activities. The study revealed that the Starfish site had a significantly higher hard coral cover, which did not change over the study period. A comparison of the density of macroalgae revealed that a higher proportion of the substrate in Ras Iwatine was dominated by macroalgae. Settlement tiles, used to study algal recruitment, indicated that the succession process in the Starfish site passes through more stages compared to...
Tipo: Working Paper Palavras-chave: Algal blooms; Coral reefs; Ecosystems.
Ano: 2002 URL: http://hdl.handle.net/1834/123
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Uber ein holozänes Korallen- und Mangrovenvorkommen nahe Santa Marta, Kolumbien OceanDocs
Erfa, A.v.; Geister, J..
En el mes de nov./1969 olas larga procedentes de un huracán en el NW del Mar Caribe causaron temporalmente la erosión de la "Punta la Loma", una punta de arena situada en la playa frente al aeropuerto Simón Bolívar de Santa Marta. Como resultado de este suceso afloró el sustrato de esta punta, el cual esta formado de una granodiorita encrustada por corales arrecifales y cubierta por una arena cementada. En la fauna coralina están presentadas solamente especies recientes conocidas de la costa colombiana del Caribe. También se encontraron algunos moluscos y abundantes restos litificados de raíces de mangles.
Tipo: Journal Contribution Palavras-chave: Coral; Geology; Stratigraphy; Sedimentation; Mangroves; Ecosystems; Geology; Stratigraphy; Ecosystems; Sedimentation; Mangroves; Http://aims.fao.org/aos/agrovoc/c_3232; Http://aims.fao.org/aos/agrovoc/c_7440; Http://aims.fao.org/aos/agrovoc/c_2482; Http://aims.fao.org/aos/agrovoc/c_6926; Http://aims.fao.org/aos/agrovoc/c_16190.
Ano: 1976 URL: http://hdl.handle.net/1834/3299
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Um método diferente para determinação de produtividade primária em capoeiras no Nordeste paraense. Repositório Alice
CATTANIO, J. H.; SÁ, T. D.; VIELHAVER, K..
Tipo: Parte de livro Palavras-chave: Índice de área foliar; Igarapé-Açu; Pará; Brasil; Tipitamba.; Capoeira; Ecossistema; Floresta Secundaria; Produtividade.; Amazonia; Ecosystems; Leaf area; Secondary forests..
Ano: 2000 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/395266
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Understanding Complex Human Ecosystems: The Case of Ecotourism on Bonaire Ecology and Society
Abel, Thomas; National Taipei University; tabel@mail.ntpu.edu.tw.
It is suggested that ecotourism development on the island of Bonaire can be productively understood as a perturbation of a complex human ecosystem. Inputs associated with ecotourism have fueled transformations of the island ecology and sociocultural system. The results of this study indicate that Bonaire's social and economic hierarchy is approaching a new, stable systems state following a 50-yr transition begun by government and industry that stabilized with the appearance of ecotourism development and population growth. Ecotourism can be understood to have "filled in" the middle of the production hierarchy of Bonaire. Interpreted from this perspective, population growth has completed the transformation by expanding into production niches at smaller...
Tipo: Peer-Reviewed Reports Palavras-chave: Bonaire; Complex systems; Cultural evolution; Ecological economics; Ecosystems; Emergy; Human demography; Political ecology; Social structure; Sociocultural systems; World systems.
Ano: 2003
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Use of environmental parameters to explain the variability in spawnerrecruitment OceanDocs
Kirchner, C. H.; Bartholomae, C. H.; Kreiner, A..
This study attempts to explain the variability in recruitment of sardine in the northern Benguela and to develop potential models by including environmental information to predict recruitment. Two different recruitment and spawner number datasets were available: a VPA-developed dataset, for the period 1952–1987, and data from a simple age-structured model for 1992–2007. In all, four environmental indices were used: the degree of the intrusion of the warm Angola Current into northern Namibia, termed the Angola–Benguela front index; the extent of the upwelling area off central Namibia; average sea surface temperature (SST) over the northern and central Namibian shelf; and wind stress anomalies at Lüderitz as an indicator of upwelling strength. Contrary to...
Tipo: Journal Contribution Palavras-chave: Currents (water); Upwelling; Sardine fisheries; Environments; Ecosystems; Anomalies; Biomass; Spawning; Recruitment.
Ano: 2009 URL: http://hdl.handle.net/1834/4671
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