Results 81 to 90 of about 724,132 (277)
Actividad 2. Mejoramiento de polblaciones compositas. Arroz de secano para el ecosistema de sabanas : Informe anual 2001. Septiembre 2000 - Septiembre 2001 [PDF]
, 2001 Desde 1996, acudiendo a las recomendaciones del CIAT, los proyectos arroz del CIAT y del CIAT/CIRAD, han disminuido las actividades de mejoramiento convencional por cruces entre "Japonica" Oryza sativa y "Japonica" Oryza sativa.
Châtel, Marc +3 more
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Using customs data to understand overlooked trade in non‐CITES birds between Africa and Asia
Conservation Biology, EarlyView.Abstract The international trade in live birds poses risks to animals, people, and biodiversity. To effectively mitigate these risks, decision‐makers require information on the volume, dynamics, and direction of trade. Despite Africa once being the largest exporter of birds by region, very little data exist on recent trade in live birds not listed on ...
Alisa Davies +4 more
wiley +1 more source
, 2015 La plasticidad fenotipica permite a las plantas lidiar con ambientes heterogeneos. Capsicum annuum silvestre es un valioso recurso genetico que habita en sitios que difieren en la disponibilidad de luz.
Sergio Hernández-Verdugo +6 more
semanticscholar +1 more source
Evaluating synthetic substitutes to reduce illegal harvesting and support species recovery
Conservation Biology, EarlyView.Abstract Providing synthetic substitutes is a widely promoted strategy to shift consumer demand away from wildlife products derived from threatened species. Yet, there is little evidence on whether product substitution prevents illegal or unsustainable harvesting and contributes to the recovery of threatened populations.
Aditya Shekhar Malgaonkar +17 more
wiley +1 more source
Environmental influence and species occurrence of yellowjacket drones in an invaded area
Scientific ReportsDuring the mating season, reproductive individuals of numerous insect species gather in rendezvous areas, which increases mating opportunities. Male hymenopterans often have to move considerable distances during a particular season, searching or waiting ...
Agustina P. Porrino +2 more
doaj +1 more source
Desde la experiencia y actualización permanente docente de los autores, el libro aborda los ejes temáticos fundamentales para la ecología de poblaciones teórica y aplicada: leyes y conceptos centrales; muestreo, distribución y abundancia; dinámica del cambio en longitud-biomasa de los individuos y numérico; ajustes al ambiente (evolución del nicho ...
Rumi Macchi Zubiaurre, Alejandra +1 more
openaire +2 more sources
Orientación de las flores de dos poblaciones norteñas de Pachycereus pecten-aboriginum (Cactaceae)
, 2015 Varios estudios previos han documentado que algunas cactaceas columnares muestran orientacion ecuatorial de sus flores. Sin embargo, se desconoce que tan general es este patron de orientacion entre las cactaceas que producen flores laterales. Pachycereus
Ileem Aguilar-Gastélum +1 more
semanticscholar +1 more source
Report of the Inter-American Tropical Tuna Commission for the year 2008 [PDF]
, 2010 ENGLISH: The Inter-American Tropical Tuna Commission (IATTC) operates under the authority and direction of a convention originally entered into by Costa Rica and the United States. The convention, which came into force in 1950, is open to adherence by
core
Estimating the total mortality of seabirds following a marine heat wave
Conservation Biology, EarlyView.Abstract Marine heat waves detrimentally affect a range of marine species, including seabirds, and are increasing in frequency and severity. When thousands of dead seabirds wash up on beaches, the public becomes concerned. However, the number of dead birds recorded on beaches is only a fraction of the total mortality; most birds perish at sea.
Jennifer L. Lavers +3 more
wiley +1 more source
Acta Agronómica, 1995 <p>This study was conducted at CIAT, in both the research station and fanners' plots, in the Darién area, of the Cauca Valley Department, between 1989 and 1991.
Beltrán Jorge Alonso +2 more
doaj