Results 31 to 40 of about 535,209 (176)
Estimates of the rates of mortality of yellowfin tuna in the Eastern Pacific Ocean derived from tagging experiments [PDF]
, 1971 ENGLISH: Tag release and return data for the Baja California and Gulf of Guayaquil areas were selected for this study because substantial numbers of returns resulted from these releases and because the effects of emigration are small in these areas.
Bayliff, William H.
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Conservation Biology, EarlyView.Abstract Knowledge of species distributions is essential for informing policies on nature conservation and restoration. However, updating them on a regular basis and doing so in a harmonized manner at the international level is difficult. The European Bird Census Council integrated national monitoring data covering 5 years to update farmland bird ...
Sergi Herrando +54 more
wiley +1 more source
La definición del concepto estimación de medida de los maestros de primaria [PDF]
, 2015 En esta aportación presentamos un estudio sobre las definiciones del concepto de estimación de medida que poseen los maestros de primaria. Queremos saber cómo los maestros definen el concepto, que en la literatura de educación matemática no está ...
Albarracín, Lluís +2 more
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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
Length-frequency estimation for yellowfin tuna (Thunnus albacares) caught by commercial fishing gear in the Eastern Pacific Ocean [PDF]
, 1992 ENGLISH: Methods of collecting samples for the purpose of estimating the numbers and weights of fish caught, by length interval, are described. Several models for two-stage sampling are described, and the equations for the estimators and their variances ...
Calkins, Thomas P. +2 more
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A framework for maximizing the benefit from retaining regrowth on private land
Conservation Biology, EarlyView.Abstract Conservation interventions often have lower‐than‐desired positive impacts, as revealed by retrospective counterfactual‐based evaluations. To address this, a prospective counterfactual‐based approach can be used to estimate potential benefits and design conservation interventions to maximize outcomes. We developed a framework for estimating the
Hannah Thomas +4 more
wiley +1 more source
Industrial Data, 2005 El Modelo multivariado autoregresivo con medias móviles (VARMA) se emplea para identificar características dinámicas de un sistema estructural ante la presencia de ruido.
Roberto Amaro Baldeón +1 more
doaj +1 more source
Mejora a la estimación de la cobertura vegetal por línea intercepto o línea de Canfield [PDF]
, 2012 Una de las estimaciones de importancia en la obtención de un modelo de hábitat para fauna silvestre es la cobertura vegetal. El uso del método de línea intercepto o línea de Canfield se emplea para este fin. Sin embargo, se conoce una mejor estimación
González Uribe, Dino Ulises
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Improving the use of expert opinion in disease risk analysis for conservation translocations
Conservation Biology, EarlyView.Abstract Conservation translocations are subject to considerable uncertainty and risk, of which disease is one of the most recognized. To address disease risks, several protocols for qualitative disease risk analysis (qDRA) exist and are used for responsible conservation translocation planning.
John G. Ewen +13 more
wiley +1 more source
Pensamiento Americano, 2019 En este artículo se describe la figura de los estudios previos como etapa preliminar para los procesos de contratación estatal desde una óptica doctrinal y jurisprudencial que procure una caracterización que sirva de referente para comprender su ...
Leidy Viviana López Bedoya +1 more
doaj +1 more source