Results 21 to 30 of about 660,321 (207)

Contribuciones al muestreo sucesivo: estimador producto multivariante [PDF]

open access: yes, 2001
Se considera el problema de estimar la media de una población finita para la ocasión actual, basándonos en las muestras seleccionadas en dos ocasiones.
Artés Rodríguez, E. M.
core   +3 more sources

ESTUDIO DE LA ENTOMOFAUNA DE GENOTIPOS DE FRIJOL POR MEDIO DE ANÁLISIS MULTIVARIADO

open access: yesActa Biológica Colombiana, 2021
En el cultivo del frijol existen diversas especies de insectos que pueden ocasionar perjuicios a la productividad y enemigos naturales que pueden ayudar a regular sus poblaciones.
Nahara Gabriela Piñeyro Ferreira   +4 more
doaj  

Knee height is often right: evaluating device height effects on camera trapping rate

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Camera trap deployment height can introduce systematic biases in detection trapping rates across species of different body sizes. Combining 172 paired sampling points in five experiments across Europe, North America and Africa, our results show that low cameras significantly increase detections of small‐ and medium‐sized species, whereas high cameras ...
Jorge Sereno‐Cadierno   +6 more
wiley   +1 more source

Effects of landscape context on avian specialist response to increased surface temperature in protected areas

open access: yesConservation Biology, EarlyView.
Abstract Human development is a driver of global change and a major threat to biodiversity. Protected areas maintain and support biodiversity, but outside stressors, such as climate change and land use change, can negatively influence natural resources within protected areas.
Leah J. Rudge   +2 more
wiley   +1 more source

Diagnóstico de satisfacción de infraestructura y equipamiento en las Facultades de la Universidad Autónoma de Chihuahua

open access: yesRevista Biológico Agropecuaria Tuxpan
La presente investigación tiene como objetivo identificar la influencia de los programas presupuestarios dirigidos a la comunidad universitaria de la Universidad Autónoma de Chihuahua en las áreas de infraestructura y equipamiento.
Anabel Ortega-Rodríguez   +4 more
doaj   +1 more source

Cuestionario de distribuciones en el muestreo [PDF]

open access: yes, 2015
Parcialmente financiado por el PIE13 ...
Cruces-Pastor, Eugenia   +2 more
core   +1 more source

Structured machine learning modeling to support conservation of deep‐sea benthic biodiversity

open access: yesConservation Biology, EarlyView.
Abstract Biodiversity monitoring programs need to deliver accurate, timely, and actionable predictions. To establish a predictive monitoring program for deep‐sea benthos of the Santos Basin, Brazil, we developed a two‐stage structured model that allowed comparison of biodiversity predictions obtained from environmental simulations (2M‐Sim).
Gustavo Fonseca   +23 more
wiley   +1 more source

La investigación cualitativa

open access: yesInnova Research Journal, 2016
La investigación cualitativa es uno de los tipos de investigación mas usado. Este estudio analiza las bases de la investigación cualitativa, sus enfoques, planeamiento y herramientas necesaria para su buena implementación.
Maria Auxiliadora Guerrero Bejarano
doaj   +1 more source

Diseño de Muestreo

open access: yes, 2021
Fil: Pereyra, Laura Cecilia. Universidad Nacional de Jujuy. Instituto de Ecorregiones Andinas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta.
Pereyra, Laura Cecilia, Vaira, Marcos
openaire   +1 more source

Linking eBird data with high spatiotemporal remote sensing products to estimate occupancy of bird populations across the island of Ireland

open access: yesIbis, EarlyView.
The vast increase in biodiversity data generated through citizen science initiatives, alongside a growing suite of remote sensing products and advanced modelling tools, has opened new avenues for rapidly, accurately and efficiently monitoring species trends to inform conservation, management and policy.
Ramiro D. Crego   +7 more
wiley   +1 more source

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