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Registros recuperados: 31.147
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Resultados del monitoreo de la tortuga carey (Eretmochelys imbricata) en los dos sitios de captura comercial: Cocodrilo (Isla de la Juventud) y Nuevitas, Cuba OceanDocs
Moncada, F.; Medina, Y.; Nodarse, G..
Se presentan los resultados obtenidos para la tortuga carey (Eretmochelys imbricata) en la plataforma cubana, a partir de los monitoreos en los dos sitios de captura comercial: Cocodrilo (Isla de la Juventud) y Nuevitas; entre 1995 y 2006. Se analizan algunos indicadores poblacionales como el comportamiento de la composición por talla, la talla media anual y la proporción sexual de los careyes capturados, así como el comportamiento de la captura comercial anual en los dos sitios. Se concluye que la talla media de los careyes capturados en la Isla de la Juventud y Nuevitas, se ha mantenido estable a lo largo del tiempo, con un predominio de las tallas menores en la Isla de la Juventud; y que la proporción por sexos favorable a las hembras muestra un...
Tipo: Journal Contribution Palavras-chave: Monitoring; Catch/effort; Marine turtles.
Ano: 2011 URL: http://hdl.handle.net/1834/4628
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A New Methodology for Assessing the Effectiveness of Marine Protected Areas OceanDocs
Angulo-Valdés, J.A.; Hatcher, B.G..
La efectividad de manejo se entiende como el grado en que los objetivos de manejo de un área protegida han sido cumplidos. Antes del 1993 no existían en la literatura trabajos sobre este tema, y solo se encontraban artículos que trataban sobre los objetivos y beneficios de las áreas protegidas vistos desde una perspectiva biológica solamente. En el presente trabajo se desarrolla una nueva metodología para evaluar la efectividad de manejo de un área marina protegida y la misma se aplica a un estudio de caso real. La metodología propuesta constituye una herramienta interdisciplinaria que pudiera mejorar el manejo de las áreas marinas protegidas. Esta metodología constituye un paso adelante que se nutre de las contribuciones anteriores y provee un nuevo...
Tipo: Journal Contribution Palavras-chave: Management; Marine sciences; Protected areas.
Ano: 2013 URL: http://hdl.handle.net/1834/4926
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Notas acerca del fitoplancton de la Laguna Guanaroca, Cienfuegos, Cuba OceanDocs
Moreira González, A.; Betancourt, C.; Toledo, L.; Barcia, S.; Comas, A..
La Laguna Guanaroca es parte de la única Área Protegida de la provincia de Cienfuegos, Cuba. Se estudió el fitoplancton y algunos parámetros físico-químicos en seis estaciones de este ecosistema, en el mes de noviembre de 2004. Las muestras se preservaron con lugol ácido. La abundancia expresada como densidad fue determinada usando la técnica de sedimentación para concentrar el fitoplancton. Todos los organismos fueron contados con un microscopio binocular usando una cámara de conteo celular Sedgewick-Rafter. En general, se registraron valores altos de salinidad, conductividad eléctrica, sólidos disueltos, cloruros y sulfatos. Los valores de oxígeno disuelto estuvieron en el rango de 4,75 a 7,66 mg/l y los valores de DBO5 \ estuvieron entre 7,0 y...
Tipo: Journal Contribution Palavras-chave: Phytoplankton.
Ano: 2013 URL: http://hdl.handle.net/1834/4922
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XRF analysis of sediments from Nuevitas Bay (Cuba): assessment of current heavy metal contamination OceanDocs
Díaz Rizo, O.; Rudnikas, A. G.; Lavin Pérez, R. D.; Arencibia Carballo, G.; D´Alessandro Rodríguez, K..
Concentrations of chromium, nickel, copper, zinc and lead in surface sediments from six sta- tions located in Nuevitas Bay (Cuba) were estimated by X-ray fuorescence analysis. The Cr content in sediments shows a strong variation across the studied stations (89-513 mg.kg-1 ), in contrast with the other elements studied. The application of modifed degree of contamina- tion (mCd) classifes as moderate the contamination of Nuevitas Bay. The comparison with Se- diment Quality Guidelines and toxicity mean quotients shows that 100 % of the Sediments are associated with the occasional presence of possible adverse effects to human health.
Tipo: Journal Contribution Palavras-chave: Pollution control; X-ray fluorescence analysis; Heavy metals.
Ano: 2014 URL: http://hdl.handle.net/1834/5763
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Resultados del monitoreo de la tortuga carey (Eretmochelys imbricata) en los dos sitios de captura comercial: Cocodrilo (Isla de la Juventud) y Nuevitas, Cuba OceanDocs
Medina, Y.; Moncada, F.; Nodarse, G..
Se presentan los resultados obtenidos para la tortuga carey (Eretmochelys imbricata) en la plataforma cubana, a partir de los monitoreos en los dos sitios de captura comercial: Cocodrilo (Isla de la Juventud) y Nuevitas; entre 1995 y 2006. Se analizan algunos indicadores poblacionales como el comportamiento de la composición por talla, la talla media anual y la proporción sexual de los careyes capturados, así como el comportamiento de la captura comercial anual en los dos sitios. Se concluye que la talla media de los careyes capturados en la Isla de la Juventud y Nuevitas, se ha mantenido estable a lo largo del tiempo, con un predominio de las tallas menores en la Isla de la Juventud; y que la proporción por sexos favorable a las hembras muestra un...
Tipo: Journal Contribution Palavras-chave: Monitoring; Catch/effort.
Ano: 2011 URL: http://hdl.handle.net/1834/4145
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Composición y calidad de la fracción lipídica de los ensilajes de residuos de tilapias OceanDocs
Llanes Iglesias, J.; Toledo Pérez, J..
El objetivo del presente trabajo fue determinar la composición y los índices de identificación y calidad de la fracción lipídica de los ensilajes (químico y biológico) de residuos del fileteado de tilapias. El ensilaje químico se preparó con 2 % de ácido sulfúrico 98 % y 1 % de ácido fórmico (p/v) y el biológico con 15 % de miel de caña y 3 % de yogurt (Lactobacillus acidophillus) (p/p) y se almacenaron por 30 días. Los resultados mostraron que ambos ensilajes poseen todos los ácidos grasos presentes en la materia prima y el 60 % fueron insaturados. El oleico (18:1ω9) fue el de mayor concentración (30,2 %) seguido del palmitico (18:0) (27,4 %) y linoleico (18:2ω6) (16,8 %). Los índices de iodo (878 mg/g), saponificación (194,5 mg KOH/g) y ácidos grasos...
Tipo: Journal Contribution Palavras-chave: Fatty acids; Fish silage; Lipids.
Ano: 2012 URL: http://hdl.handle.net/1834/5706
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Sustaining the supply of White Gold: The case of SysCom innovation platforms in India Organic Eprints
Andres, C.; Mandloi, L.S.; Bhullar, G.S..
Increasing concerns about global food security, depleting fossil reserves and diminishing natural resources question the continuation of energy-intensive conventional agriculture and emphasize the importance of sustainable alternatives such as organic agriculture. Even though organic farming is more ecologically sustainable and often economically advantageous, widespread adoption is limited as farmers making adoption-decisions are faced with challenging trade-offs (e.g. lower yields in the short term, limited options for crop nutrition and pest control and non-existence of markets for organic produce). This highlights the importance of innovation platforms involving relevant stakeholders (farmers, researchers, extensionists, etc.) in decision-making...
Tipo: Book chapter Palavras-chave: Education; Extension and communication India.
Ano: 2016 URL: http://orgprints.org/29772/1/andres-etal-2016-InnovationPlattforms-chapter8-p133-150.pdf
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Evaluierung und Optimierung biologischer Verfahren zur Regulierung des Pflaumenwicklers (Cydia funebrana) und der Monilia-Krankheit im ökologischen Steinobstanbau (Verbundvorhaben) Organic Eprints
Das hier beschriebene Projekt ist Teil eines Verbundvorhabens, das folgende Teilprojekte umfasst: FKZ 06OE198, FKZ 06OE057, FKZ 06OE348. Alle in Organic Eprints archivierten Projektbeschreibungen und Veröffentlichungen zu diesem Verbundvorhaben finden Sie unter folgendem Link: http://orgprints.org/id/saved_search/1482. 1. Geplante Arbeitsschritte 1.1 Optimierung der Pflaumenwicklerbekämpfung - Freilandversuche In Abhängigkeit des Verlaufs und der Resultate der Laborversuche mit Bacillus thuringiensis-, NeemAzal-T/S(r)- (während der Blüte) und Beauveria bassiana-Präparaten, sowie entomopathogenen Viren und Nematoden, sollen diese Verfahren auch unter Freilandbedingungen geprüft werden. Weiterhin soll untersucht werden, wie die in der Schweiz...
Tipo: Project description Palavras-chave: Crop health; Quality; Protection Fruit and berries.
Ano: 2023
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Integration neuester Forschungsergebnisse zu einem Gesamtkonzept für die Regulierung von Falschem Mehltau an Zwiebeln im ökologischen Landbau: Sortenwahl und Anbauverfahren (Verbundvorhaben) Organic Eprints
Das hier beschriebene Projekt ist Teil eines Verbundvorhabens, das folgende Teilprojekte umfasst: FKZ 06OE034, FKZ 06OE073. Alle in Organic Eprints archivierten Projektbeschreibungen und Veröffentlichungen zu diesem Verbundvorhaben finden Sie unter folgendem Link: http://orgprints.org/cgi/saved_search?savedsearchid=1316. Teilversuch 1 Säzwiebeln: Vergleich mehltauresistenter Sorten mit norddeutschen Standardsorten auf zwei Praxisflächen Auf zwei Praxisbetrieben im Landkreis Nienburg wurden vom Ökoring e.V. acht verschiedene Zwiebelsorten untersucht, darunter waren die drei neuen mehltauresistenten Sorten sowie fünf weitere Sorten, sowie die norddeutschen Standardsorten im ökologischen Anbau ‚Profit’, ‚Summit’ und ‚Hector’. Zur Aussaat war die Witterung...
Tipo: Project description Palavras-chave: Crop health; Quality; Protection Breeding; Genetics and propagation Vegetables.
Ano: 2023
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Market Conditions for Organic Aquaculture - Market and Price Analysis. RobustFish work package 6.2 report. Organic Eprints
Ankamah-Yeboah, Isaac; Nielsen, Max; Nielsen, Rasmus.
Organic aquaculture production is attaining impressive growth and demand is strongest in Europe. Countries like Germany, France and Switzerland particularly have stronger consumption markets. In 2010, the European Union implemented a harmonized system of organic aquaculture production principles for all member states. The regulation requires that fish production should exclusively be based on organic fry from 2016. Given that antibiotic use is only allowed in very strict limits, robustness of the fry to diseases is very crucial, particularly for countries like Denmark where serious trout fry diseases are a major concern. In spite of this, Denmark is making headway in organic aquaculture production, currently being the...
Tipo: Report Palavras-chave: Farm economics; Social aspects; Aquaculture.
Ano: 2017 URL: http://orgprints.org/31474/1/IFRO_Report_259.pdf
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Nitrogen and Energy Utilization on Conventional and Organic Dairy Farms in Norway Organic Eprints
Koesling, Matthias.
To improve environmental sustainability it is important that all sectors in a society contribute to improving the utilization of inputs as energy and nutrients. In Norway, dairy farming contributes with an important share to the added value from the agricultural sector, although there is little information available about utilization of energy and nitrogen (N). Many results on sustainability have been published on dairy farming. However, due to Norway’s Nordic climatic conditions, mountainous and rugged topography and an agricultural policy that can design its own prices and subsidies, results from other countries are hardly representative for Norwegian conditions. To bridge this gap, the objective of this study was to analyse if the utilisation of...
Tipo: Thesis Palavras-chave: Dairy cattle; Pasture and forage crops; Production systems; Farm economics; Buildings and machinery; Farm nutrient management.
Ano: 2017 URL: http://orgprints.org/34270/1/DissertationMatthiasKoesling_incl_http_ref.pdf
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Substratos renováveis na produção de mudas de Ficus enormis proveniente de jardim clonal PFB - Pesquisa Florestal Brasileira
de Oliveira Fragoso, Rosimeri; Stuepp, Carlos André; Carpanezzi, Antonio Aparecido; Wendling, Ivar; Zuffellato-Ribas, Katia Christina; Soares Koehler, Henrique.
Objetivou-se avaliar substratos renováveis à base de casca de arroz carbonizada (CAC) e fibra de coco (FC) sobre o enraizamento e qualidade final de mudas de Ficus enormis Mart. ex Miq. via estaquia caulinar de plantas provenientes de jardim clonal. Foram avaliados seis substratos: comercial (controle), composto por casca de arroz carbonizada (CAC), fibra de coco (FC) e vermiculita (S1); 100% FC (S2); 100% CAC (S3); 50% FC e 50% CAC (S4); 30% (FC) e 70% CAC (S5); 70% FC e 30% CAC (S6). O substrato comercial (S1) e as composições com maior proporção de FC apresentam qualificação superior para a produção de mudas de F. enormis.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Engenharia Florestal; Silvicultura clonal; Qualidade de mudas Brotação; Epicórmicos; Espécie florestal nativa Shoots; Epicormics; Native forest species.
Ano: 2016 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1246
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Resistência natural da madeira de Tachigali vulgaris ao fungo xilófago Postia placenta PFB - Pesquisa Florestal Brasileira
Stallbaun, Patricia Hellenn; Baraúna, Edy Eime Pereira; Monteiro, Thiago Campos; Vieira, Renato Silva; Sales, Nilza De Lima Pereira; Oliveira, Leandro Silva.
O trabalho teve como objetivo analisar a resistência natural da madeira de Tachigali vulgaris L. G. Silva & H. C. Lima ao fungo Postia placenta (Fr.) M. J. Lars. & Lomb., causador da podridão parda. Foram coletadas nove árvores e, da tora basal, confeccionadas seis amostras de cada indivíduo, com dimensões de 25 mm x 25 mm x 9 mm (radial, tangencial e axial) no sentido base ao topo. As amostras foram mantidas em contato com o fungo durante 14 semanas, em sala climatizada, sendo posteriormente secas e a perda de massa avaliada. A madeira de T. vulgaris se mostrou altamente resistente a P. placenta, pois o maior valor de perda de massa foi de 12,13%. Foi observada correlação indireta de 82,9% entre a densidade básica e a durabilidade da madeira,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Engenharia Florestal; Tecnologia da madeira Podridão da madeira; Preservação da madeira; Ensaio biológico Wood decay; Wood preservation; Biological assay.
Ano: 2016 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1231
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Can Conventional Crop Producers Also Benefit From Bt Technology? AgEcon
Dun, Zhe; Mitchell, Paul D..
Transgenic plants producing insecticidal protein derived from Bacillus thuringiensis (Bt) have been widely adopted since their commercial introduction in 1996. In 2009, 25 countries planted 134 million ha of transgenic crops. The widespread adoption of such plants has reduced use of conventional insecticides while attaining yield gains, thus providing economic, environmental and human health benefits. Because of Bt crops’ high pest control efficacy, there is concern that pests will develop resistance to Bt toxins so that Bt crops are less or no longer effective. To delay the evolution of resistance, the U.S. Environmental Protection Agency (EPA) currently requires Bt crop growers to also plant non-Bt (conventional) crops on a minimum percentage of their...
Tipo: Conference Paper or Presentation Palavras-chave: Welfare; Bt; Pest suppression; Agricultural and Food Policy; Crop Production/Industries.
Ano: 2011 URL: http://purl.umn.edu/103584
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Estimating the Fair Insurance Premium for Dungeness Crab Yields in the Western U.S. Coast AgEcon
Liu, Chia-Lan; Richardson, James W.; Leatham, David J..
The Dungeness is a popular food and the most commercially important crab in the western states in the U.S. Like all agricultural production, the crab fisherman face yield risks and must manage these risks. In addition to weather risk, crab fisherman may experience low yields if the crabs are over fished in previous years. Farmers for many traditional agricultural crops can purchase crop insurance to insure against low yields. However, crab fishermen at this time do not have this option. The purpose of this paper is to estimate a fair insurance premium based on the historical yields of the Dungeness crab. This information can then be used in risk/return models for crab fishing to determine if it would be optimal for fisherman to purchase crop insurance. An...
Tipo: Conference Paper or Presentation Palavras-chave: Dungeness Crab; Fair Insurance Premium; Simulation; Agricultural and Food Policy; Agricultural Finance; Risk and Uncertainty.
Ano: 2011 URL: http://purl.umn.edu/103424
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Widespread Adoption of Organic Agriculture in the US: Are Market-Driven Policies Enough? AgEcon
Klonsky, Karen; Greene, Catherine R..
Organic food production has rapidly growing consumer demand in the U.S. and other industrialized countries, along with a worldwide regulatory framework and rapidly developing support infrastructure, making it a premier technology in the efforts of many public and private organizations that advocate more sustainable farming practices. The use of organic farming systems for crop production in the U.S. has grown rapidly during the last decade, but is still under 0.5 percent of total U.S. farmland-substantially less than in many countries in Europe and elsewhere. Within the U.S., conversion to organic farming systems has been more extensive in particular commodity sectors and regions. In California, for example, about two percent of the state's crop...
Tipo: Conference Paper or Presentation Palavras-chave: Organic agriculture; Farm policy; Consumer demand; Marketing.
Ano: 2005 URL: http://purl.umn.edu/19382
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The Effect of Information on Consumer Preferences of Indoor Plants AgEcon
Solano, Alexis; House, Lisa; Gao, Zhifeng.
This study primarily focuses on the effect of information on consumers’ purchasing behavior. If consumers are provided with information about a specific product they may change their beliefs about that product. This distribution of information may lead the consumer to make the decision either to purchase or not purchase, or the consumer may increase or decrease the amount he or she is willing to pay. Here, the impact of information about indoor plants’ ability to reduce indoor air pollution on participants is analyzed. This research will add to the literature on consumer behavior and will also benefit the floriculture industry within the state of Florida. Florida’s floriculture sales have fluctuated during the last ten years. From 2000 to 2003 the...
Tipo: Presentation Palavras-chave: Effect of information; Willingness to pay; Conditional logits; Volatile organic compounds; Indoor plants; Floriculture; Agribusiness; Marketing; Research Methods/ Statistical Methods.
Ano: 2012 URL: http://purl.umn.edu/124419
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Efeito in vitro de bioterápico sobre larvas de Cochliomyia hominivorax (Diptera: Calliphoridae) MV&Z
Barros, G. P.; Seugling, J.; Pereira, A.; Guimarães, M. L. P.; Bricarello, P. A..
Miíases são lesões ocasionadas pelo parasitismo da forma larval da mosca Cochliomyia hominivorax nos tecidos vivos de animais de sangue quente. Essas afecções são demasiadamente cruentas e geram severos prejuízos ao bem-estar animal e aos criadores, de forma que seu tratamento é realizado imediatamente após o diagnóstico. O tratamento é quase sempre realizado com o emprego de produtos à base de compostos sintéticos diretamente sobre as larvas, ou uso de endectocidas(CARVALHO, 2010). O uso em demasia desses produtos está provocando o surgimento de dípteros resistentes à sua ação, a deterioração dos agroecossistemas, além de acumular resíduos tóxicos no ambiente e nos produtos de origem animal (VERÍSSIMO, 2003). A...
Tipo: Info:eu-repo/semantics/article
Ano: 2018 URL: http://www.revistamvez-crmvsp.com.br/index.php/recmvz/article/view/37785
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ข้าวหอมสายพันธุ์ดีเด่น PSL04106-28-1-2-1-1-1 Thai Agricultural
Pongsa Sukserm; Apichart Noenplab; Acharaporn Na Lampang Noenplab; Supattra Suwanthada; Sa-ang Chairinte; Duangorn Ariyapruek; Phamorn Pattawatang; Cawaphon Pumchoei; Anakapon Boonchuay; Duangporn Withoonchit; Duangkamon Boonchuay; Chairat Channoo; Jaturong Pipatpiriyanon; Preamkamon Munnintha; Wipavadee Chamnan; Naiyakhon Sangoenkaew; Supawinee Suangtho; Bang-on Thammasamisorn; Chairat Petchalanuwat; Phakobkhit Dungthaisong; Opas Worawat; Supaporn Janbuathong; Sumalee Suttayot; Jittichai Anawong; Jet Kotcharoek; Pornsuree Kanjana; Wantana Srirattanasak; Nalinee Chiengwattana; Somphong Choeyphan.
The major rainfed rice growing area in the Lower North region of Thailand has good soil fertility. It has high potential to produce good rice varieties including aromatic rice. However, at present, Nahng Mon S-4 is the only aromatic, intermediate amylose content rice variety being officially released. Therefore, a selection for an aromatic, intermediate amylose content, high yield and resistant to major disease and insect pest is needed to provide the alternative for farmers. The promising line designated PSL04106-28-1-2-1-1-1 was obtained the double cross being HPSL1/Mudgo//HSRN/SPR90116-15-2-2-1-1///SPR90116-15-2-2-1-1 during 2002-2004. F1 and F2 were massively sown in 2005-2006, respectively. F3 and F4 were tested against brown plant hopper (BPH)...
Tipo: PhysicalObject Palavras-chave: Intermediate rainfed rice; Aromatic rice; Lower northern; ข้าวนาน้ำฝนอายุปานกลาง; ข้าวหอม; ลักษณะประจำพันธุ์; ภาคเหนือตอนล่าง.
Ano: 2013 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5527
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Mechanisms of change in human behaviour ArchiMer
Marchal, Paul; Bartelings, Heleen; Bastardie, François; Batsleer, Jurgen; Delaney, Alyne; Girardin, Raphael; Gloaguen, Pierre; Hamon, Katell; Hoefnagel, Ellen; Jouanneau, Charlène; Mahevas, Stephanie; Nielsen, Rasmus; Piwowarczyk, Joanna; Poos, Jan-jaap; Schulze, Torsten; Rivot, Etienne; Simons, Sarah; Tidd, Alex; Vermard, Youen; Woillez, Mathieu.
The scope of this report is to present the science developed within the VECTORS project to improve the understanding of the key processes driving the behaviour of human agents utilising a variety of EU maritime domains. While particular attention has been paid to the spatial interactions between fishing activities and other human uses (e.g., maritime traffic, offshore wind parks, aggregate extractions), the behaviour of non-fishing sectors of activity has also been considered. Various quantitative and semi-qualitative approaches have been pursued to gain better insight into behavioural drivers based on past data, and also forecast how human agents would react if access was constrained by either management (e.g. Marine Protected Areas – MPA), or the...
Tipo: Text
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00223/33377/31802.pdf
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