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A Bio-Economic Assessment of the West Coast Deep-Sea Hake Fishery with Referede to the Optimal Utitlization and Management of the Resource. OceanDocs
Hutton, T.; Sumaila, U.R..
The cooperative versus non-cooperative management of the South African west coast hake stock is explored using game theoretic modelling in conjunction with an age-structured model. The age-structured model is used to produce a physical flow account for input into national resource accounts. Between 1989 and 1998, the average catch of hake on the west coast was 92000 tons, most of which was harvested by the demersal trawl sector. The physical flow account indicates that the conservative re-building management strategy pursued for the fishery over the same time period mentioned above, has resulted in a 29% increase in the demersal trawl catch over the last decade. We simulated the effects of alternative quota restrictions on two fishing sectors (the...
Tipo: Working Paper Palavras-chave: Hake fisheries; Economic analysis.
Ano: 2000 URL: http://hdl.handle.net/1834/873
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A BIOECONOMIC MODEL OF SPATIAL POLICY OPTIONS AgEcon
Smith, Martin D.; Wilen, James E..
This paper outlines an empirical bioeconomic model that is spatially explicit. It combines a metapopulation model of sea urchin biology with a discrete choice econometric analysis of harvester behavior. Discrete choice results are used to simulate short-term spatial closures in the fishery, and implications for long-term spatial management are discussed.
Tipo: Conference Paper or Presentation Palavras-chave: Environmental Economics and Policy.
Ano: 2000 URL: http://purl.umn.edu/21749
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A Brazilian Bacillus thuringiensis strain highly active to sugarcane borer Diatraea saccharalis (Lepidoptera: Crambidae). Repositório Alice
GITAHY, P. de M.; SOUZA, M. T. de; MONNERAT, R. G.; ARRIGONI, E. de B.; BALDANI, J. I..
Diatraea saccharalis é o inseto-praga que provoca os maiores danos a cultura da cana-de-açúcar, e seu controle é limitado pela localização do ataque no interior do colmo das plantas. Como parte de um projeto a longo prazo com o objetivo de desenvolver uma alternativa eficiente para o controle da broca da cana utilizando as proteínas Cry de Bacillus thuringiensis, o presente trabalho descreve a seleção e caracterização de uma estirpe desta bactéria com atividade larvicida para D. saccharalis. A estirpe brasileira S76, foi selecionada pela alta atividade letal contra larvas da broca, dez vezes maior do que a estirpe comercial HD-1 de B. thuringiensis, com resultados da CL50 de 13.06 µg/L e 143.88 µg/L, respectivamente. Foram observados cristais bipiramidais...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Controle biológico; Bacillus thuringiensis; Diatraea saccharalis; Cana-de-açúcar; Biological control; Sugarcane.
Ano: 2000 URL: http://www.alice.cnptia.embrapa.br/handle/doc/597034
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A broca dos frutos do cupuaçuzeiro, Conotrachelus hueropictus FIEDLER. Infoteca-e
THOMAZINI, M. J..
O cupuaçuzeiro, Theobroma grandflorum (Wild. ex Spreng.) Schum., é plantado na Região Norte, em monocultivo ou como componente de sistemas agroflorestais. Nos dosi sistemas de produção ele é atacado por insetos-praga, dentre os quais a broca dos frutos se destaca devido aos danos causados, provocando perdas na produção com diferentes graus de intensidade, dependendo da região.
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Cupuaçuzeiro; Theobroma grandflorum; Praga; Broca; Conotrachelus humeropictus; Projeto RECA; Nova Califórnia (RO); Rondônia.
Ano: 2000 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/495884
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A cadeia produtiva do mel no Estado do Piaui. Repositório Alice
VILELA, S. L. de O..
A apicultura piauiense assume grande importância socioeconômica e ecológica, haja vista que milhares de famílias estão direta e indiretamente envolvidas nos elos da produção e do processamente na cadeia dos produtos apícolas, ao mesmo tempo em que, por ser uma atividade com características próprias de agricultores e familiares, com rentabilidade superior à maioria das atividades agropecuárias exercidas por esses mesmos agricultores, vem cumprindo papel importante na fixação dos homens e mulheres (especialmente dos jovens) no meio rural. Portanto, atividade apícola desenvolvida no Piauí apresenta-se como um bom exemplo no contexto da multiplicidade de formas de geração de dinâmicas econômicas no meio rural.
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Piauí; Brasil; Cadeia Produtiva; Mel.
Ano: 2000 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/59525
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A cápsula da espermateca dos Eumolpinae (Coleoptera: Chrysomelidae) associados a Theobroma cacao L. (Sterculiaceae) do Sul da Bahia Anais da SEB
Ferronato,Edna M. O..
Este estudo descreve a forma e as dimensões da cápsula da espermateca em Antytipona epiphania, Bechyné, 1955, Antytipona sp., Cayetunya sp., Colaspis aenea (Fabricius, 1801), Colaspis calcalifera (Bechyné, 1954), Coytiera (Campylochira) pertusa (Lèfevre, 1884), Hermesilla sp., Hylax bahiensis Bechyné, 1950, Leprocolapis adducta (Clavaereau, 1914),Leprocolapis sulcata Lèfevre, 1877, Nycterodina (Nycterodinella) immetalllica Bechyné & Bechyné, 1961,Percolaspis ornata, (Germar, 1824), Plaumannita sp., Podoxenus sp. e Taimbezinhia theobromae (Bryant, 1924) com o objetivo de auxiliar na identificação das espécies associadas às plantações de Theobroma cacao L. na Bahia.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Insecta; Morfologia; Caracterização; Cacaueiro.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80592000000100007
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A case study of ship track formation in a polluted marine boundary layer OMA
Noone, K.J.; Johnson, D.W.; Taylor, J.P.; Ferek, R.J.; Garrett, T.; Hobbs, P.V.; Durkee, P.A.; Nielsen, K.; Öström, E.; O'Dowd, C.; Smith, M.H.; Russell, L.M.; Flagan, R.C.; Seinfeld, J.H.; De Bock, L.; Van Grieken, R.; Hudson, J.G.; Brooks, I.; Gasparovic, R.F.; Pockalny, R.A..
A case study of the effects of ship emissions on the microphysical, radiative, and chemical properties of polluted marine boundary layer clouds is presented. Two ship tracks are discussed in detail. <i>In situ</i> measurements of cloud drop size distributions, liquid water content, and cloud radiative properties, as well as aerosol size distributions (outside-cloud, interstitial, and cloud droplet residual particles) and aerosol chemistry, are presented. These are related to remotely sensed measurements of cloud radiative properties. The authors examine the processes behind ship track formation in a polluted marine boundary layer as an example of the effects of anthropogenic particulate pollution on the albedo of marine stratiform clouds.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aerosols; Air pollution; Albedo; Atmosphere; Atmosphere; Atmospheric boundary layer; Boundary layers; Cloud cover; Clouds; Man-induced effects; Marine environment; Marine pollution; Particulates; Remote sensing; Ships.
Ano: 2000 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=8839
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A case study of ships forming and not forming tracks in moderately polluted clouds OMA
Noone, K.J.; Öström, E.; Ferek, R.J.; Garrett, T.; Hobbs, P.V.; Johnson, D.W.; Taylor, J.P.; Russell, L.M.; Flagan, R.C.; Seinfeld, J.H.; O'Dowd, C.D.; Smith, M.H.; Durkee, P.A.; Nielsen, K.; Hudson, J.G.; Pockalny, R.A.; De Bock, L.; Van Grieken, R.E.; Gasparovic, R.F.; Brooks, I..
The effects of anthropogenic particulate emissions from ships on the radiative, microphysical, and chemical properties of m(oderately polluted marine stratiform clouds are examined. A case study of two ships in the same air mass is presented where one of the vessels caused a discernible ship track while the other did not. <i>In situ</i> measurements of cloud droplet size distributions, liquid water content, and cloud radiative properties, as well as aerosol size distributions (outside cloud, interstitial, and cloud droplet residual particles) and aerosol chemistry, are presented. These are related to measurements of cloud radiative properties. The differences between the aerosol in the two ship plumes are discussed; these indicate that...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aerosols; Air pollution; Albedo; Anthropogenic factors; Atmospheric boundary layer; Atmospheric particulates; Chemical plumes; Cloud physics; Clouds; Droplets; Fuels; Ocean-atmosphere system; Pollution effects; Radiative transfer; Ships; Size distribution.
Ano: 2000 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=8840
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A Classification of Collaborative Management Methods Ecology and Society
Blumenthal, Dana M; University of Minnesota; dblumenthal@npa.ars.usda.gov; Jannink, Jean-Luc; University of Minnesota; jjannink@iastate.edu.
Collaboration among multiple stakeholders can be crucial to the success of natural resource management. In recent years, a wide variety of methods have been developed to facilitate such collaboration. Because these methods are relatively new and come from different disciplines, little attention has been paid to drawing comparisons among them. Thus, it is very difficult for potential users to sort through the increasingly large literature regarding such methods. We suggest the use of a consistent framework for comparing collaborative management methods, and develop such a framework based on five criteria: participation, institutional analysis, simplification of the natural resource, spatial scale, and stages in the process of natural resource management. We...
Tipo: Peer-Reviewed Reports Palavras-chave: Adaptive management; Agriculture; Agroecosystem analysis; Collaboration; Ecosystem management; Natural resource management; Participatory rural appraisal; Rapid rural appraisal; Soft systems analysis.
Ano: 2000
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A cobertura vegetal de inverno e a adubação orgânica e, ou, mineral influenciando a sucessão feijão/milho Rev. Bras. Ciênc. Solo
Andreola,F.; Costa,L. M.; Olszevski,N.; Jucksch,I..
O presente trabalho teve por objetivo avaliar a influência da cobertura vegetal de inverno, constituída de uma associação de aveia preta (Avena strigosa Schreb) com nabo forrageiro (Raphanus sativus L.), da adubação orgânica com esterco de aves e da adubação mineral sobre o rendimento de grãos da sucessão feijão/milho numa Terra Roxa Estruturada do estado de Santa Catarina. A cobertura do solo influenciou o rendimento de grãos de feijão, mas não o de milho. Isto pode ser atribuído à produção de uma safra de feijão antes do estabelecimento da cultura do milho e ao fato de a associação de aveia preta com nabo forrageiro apresentar uma relação C/N mais estreita que a da aveia. Independentemente do uso da cobertura vegetal, a prática da adubação promoveu...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cobertura do solo; Culturas; Adubação.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832000000400018
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A cochonilha negra da oliveira, Saissetia oleae (Oliv.) em Trás-os-Montes. IPB - Escola Superior Agrária
Pereira, J.A.; Torres, L.; Bento, Albino; Cabanas, J.E..
Tipo: ConferenceObject
Ano: 2000 URL: http://hdl.handle.net/10198/5571
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A Cointegration Analysis of Wool Prices AgEcon
Chang, Hui-Shung (Christie).
Based on cointegration analysis and monthly data from 1976.8 to 1999.10, a long-run equilibrium relationship was found to exist between prices for wools of 19 to 23 microns, despite the wool Reserve Price Scheme operated until February 1991. Furthermore, the prices for 19, 20 and 21 micron wools were found to be weakly exogenous. The latter result suggested that, although co-integrated, prices for finer wools tended to be less volatile than coarser wools. The implications are that wool producers would enjoy more stable prices by producing finer wools and that cross-hedging is possible given co-movements of prices.
Tipo: Working or Discussion Paper Palavras-chave: Cointegration; Error correction model; Reserve price scheme; Wool marketing.; Demand and Price Analysis; Livestock Production/Industries; Marketing.
Ano: 2000 URL: http://purl.umn.edu/12929
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A combined electrochemical quartz-crystal microbalance probe beam deflection(EQCM-PBD) study of solvent and ion transfers at a poly[Ni(saltMe)]: modified elecrode during redox switching IPB - Escola Superior Agrária
Vilas-Boas, Miguel; Henderson, M.J.; Freire, C.; Hillman, A.R.; Vieil, E..
The oxidative polymerization of the complex2,3-dimelhyl-N,N-bis( salicylidene)butane-2,3-diaminatonickel( n), [Ni(saltMe)], was monitored by the electrochemical quartz microbalance (EQCM) and crystal impedance techniques. Polymerisation efficiency was maintained throughout deposition of a film, which behaved rigidly, on the electrode.
Tipo: Article
Ano: 2000 URL: http://hdl.handle.net/10198/5889
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A common protocol to assemble a coherent database from distributed heterogeneous data sets: The MEDATLAS database experience ArchiMer
Fichaut, Michele; Balopoulos, Efstathios; Dooley, Harry; Garcia-fernandez, Maria; Iona, Athanasia; Jourdan, Didier; Baudet, Laurent; Maillard, Catherine.
The MEDATLAS hydrological data base, has been created by a consortium of several data centers, including HNODC (Greece), IEO (Spain), EPSHOM/CMO (French navy), IFREMERJSISMER the coordinating center (France) and ICES (Denmark) as the supervisor of the quality control procedure, in the frame of the MEDATLAS project. This project is a MAST supporting initiative for ocean data and information management. Its objectives were to assemble a comprehensive data base of temperature and salinity profiles collected in the Mediterranean sea by t he scientific laboratories and the navies, to check them for quality and to revise the climatological statistics by using this updated date set. An important part of the work has been devoted to define a common protocol to...
Tipo: Text
Ano: 2000 URL: http://archimer.ifremer.fr/doc/00251/36211/34756.pdf
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A Comparative Analysis of Agricultural Transportation and Logistics Systems in the United States and Argentina AgEcon
Goldsby, Thomas J..
Interest is high in Argentina as an emerging economic power in the Americas. This paper analyzes issues pertinent to the relative advantages and disadvantages of transportation and logistics systems between the United States and Argentina in the context of distribution to significant global markets. Designed as a tool for agribusiness students and prospective investment and trade partners, it provides a side-by-side analysis of U.S. and Argentine rail, motor, and water transportation systems. Also from a comparative perspective, it examines grain storage capacities and systems.
Tipo: Working or Discussion Paper Palavras-chave: Global markets; Infrastructure; Logistics systems; Transportation systems; Privatization; Public Economics.
Ano: 2000 URL: http://purl.umn.edu/18694
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A COMPARATIVE ANALYSIS OF RISK PREFERENCE ELICITATION PROCEDURES USING MAIL SURVEY RESULTS AgEcon
Fausti, Scott W.; Gillespie, Jeffrey M..
Tipo: Conference Paper or Presentation Palavras-chave: Research Methods/ Statistical Methods; Risk and Uncertainty.
Ano: 2000 URL: http://purl.umn.edu/36469
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A Comparative Marketing Analysis of Major Agricultural Products in the United States and Argentina AgEcon
Lence, Sergio H..
Interest is high in Argentina as an emerging economic power in the Americas. This paper analyzes issues pertinent to the relative advantages and disadvantages between the United States and Argentina for producing, transporting, processing, and marketing major agricultural commodities in the context of distribution to significant global markets. Designed as a tool for agribusiness students and prospective investment and trade partners, it provides a side-by-side analysis of major U.S. and Argentine agricultural commodities. All facts and figures are in U.S. currency and common U.S. (avoirdupois) weights and measures. Also from a comparative perspective, it defines the differences in technologies between the countries and examines in detail the marketing...
Tipo: Working or Discussion Paper Palavras-chave: Agricultural commodities; Agricultural markets; Argentina versus United States; Commercialization; Comparative economic analysis; Grains; Livestock; Marketing channels; Production technology; Marketing.
Ano: 2000 URL: http://purl.umn.edu/18684
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A comparative study of aging of the elastic fiber system of the diaphragm and the rectus abdominis muscles in rats BJMBR
Rodrigues,C.J.; Rodrigues Junior,A.J..
In the present study the age-related changes of the striated muscle elastic fiber system were investigated in the diaphragm and rectus abdominis muscles of 1-, 4-, 8- and 18-month-old rats. The activation patterns of these muscles differ in that the diaphragm is regularly mobilized tens of times every minute during the entire life of the animal whereas the rectus abdominis, although mobilized in respiration, is much less and more irregularly activated. The elastic fibers were stained by the Verhoeff technique for mature elastic fibers. Weigert stain was used to stain mature and elaunin elastic fibers, and Weigert-oxone to stain mature, elaunin and oxytalan elastic fibers. The density of mature and elaunin elastic fibers showed a progressive increase with...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aging; Elastin; Extracellular matrix; Diaphragm; Rectus abdominis.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000001200008
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A comparative study of axonal sprouting from the vagus nerve in autologous nerve graft J. Venom. Anim. Toxins
REIS,F. A..
Tipo: Info:eu-repo/semantics/other
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79302000000100009
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A COMPARATIVE STUDY OF LAND TENURE, PROPERTY BOUNDARIES, AND DISPUTE RESOLUTION: EXAMPLES FROM BOLIVIA AND NORWAY AgEcon
Goodale, Mark R.G.; Sky, Per Kare.
This paper compares and contrasts patterns of land tenure, property boundaries, and dispute resolution regarding property using examples from two diverse social and economic regions: Bolivia and Norway. The goal of the paper is essentially a comparative one. By placing the examples of Bolivia and Norway side by side, the authors hope to shed light on common strategies while recognizing the diversity to be found in the ways that people relate to land. It is hoped that readers will be able to compare the material here with examples from other regions. By using data based on field research and related methods from two regions starkly distinguished from each other by language, socioeconomic levels, political histories, and extent of integration into world...
Tipo: Working or Discussion Paper Palavras-chave: Land tenure -- Bolivia; Land tenure -- Norway; Dispute resolution -- Bolivia; Dispute resolution -- Norway; Land conflicts -- Bolivia; Land conflicts -- Norway; Land Economics/Use.
Ano: 2000 URL: http://purl.umn.edu/12769
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