Results 21 to 30 of about 83,425 (187)

Gyne and drone production in bombus atratus (Hymenoptera: Apidae) [PDF]

open access: yes, 2017
For over a decade, our research group has studied the biology of the native bumblebee, Bombus atratus, to investigate the feasibility of using it to pollinate crops such as tomato, strawberry, blackberry and peppers.
Cure, JR   +5 more
core   +1 more source

Cupule aud acorn basic morpbological differences between Quercus ithaburensis Decne. subsp. ithaburensis and Quercus ithaburensis subsp. macrolepis (Kotschy) Hedge & Yalt [PDF]

open access: yes, 2002
Estructura del glande y de la cúpula de Quercus ithaburensis Decne. subsp. ithaburensis y de Quercus ithaburensis subsp. inacrolepis (Kotschy) Hedge & Yalt.: Diferencias esenciales.Key words. Quercus ithaburensis, taxonomy, morphology, acorn, cupule,
Dufour-Dror, Jean-Marc, Ertas, Aytekin
core   +3 more sources

Population biology of the sea star Anasterias minuta (Forcipulatida: Asteriidae) threatened by anthropogenic activities in rocky intertidal shores of San Matías Gulf, Patagonia, Argentina [PDF]

open access: yes, 2017
In Patagonian coastal areas, intertidal benthic communities are exposed to extreme physical conditions. The interaction between harsh environment and anthropogenic pressure can generate changes in population biology of marine invertebrates, like density ...
Arribas, Lorena Pilar   +3 more
core   +1 more source

Hipótesis de Fisher y cambio de régimen en Colombia: 1990 – 2010

open access: yesRevista Finanzas y Política Económica, 2011
La mayor parte de la evidencia empírica sobre el efecto de Fisher o la hipótesis de Fisher sostiene que la relación entre la tasa de inflación y la tasa de interés nominal debe ser igual a uno.
Madeleine Gil Ángel   +1 more
doaj   +2 more sources

Mixed‐methods systematic review exploring the associations underpinning active outdoor play with connection to nature and environmental stewardship

open access: yesPeople and Nature, EarlyView.
Abstract Active outdoor play has been positioned in the literature as an opportunity to address concerns over climate (in)action and the rising trend of disconnection from the outdoors and nature. The objective of this systematic review was to examine associations between active outdoor play and people's connection to nature and/or environmental ...
Louise de Lannoy   +10 more
wiley   +1 more source

Efecto del pretratamiento térmico de residuos de alimentos sobre la producción de metano

open access: yesRevista U.D.C.A Actualidad & Divulgación Científica, 2019
Los residuos de alimentos son el componente principal de los residuos sólidos municipales y dado su elevado contenido de materia orgánica tienen alto potencial de producción de metano, mediante la digestión anaerobia; sin embargo, la predominancia de ...
Brayan Alexis Parra-Orobio   +4 more
doaj   +1 more source

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

Coping with change: Interactive effects of anthropogenic change influence the breeding success and survival of a desert‐dwelling cooperative breeder

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Habitat modification and climate change are major threats to biodiversity. Using 38 years of data (1985–2023), we examined their combined influence on a desert‐dwelling cooperative breeder's reproductive success and projected the likely magnitude of future effects of ...
Alejandro Alaman   +4 more
wiley   +1 more source

Un modelo macroeconómico estático con ilusión monetaria de la oferta de trabajo. Una presentación matemática

open access: yesLecturas de Economía, 2011
Resumen En este artículo se hace una presentación matemática de un modelo macroeconómico "típico" (similar al de un texto de estudio) que incluye la formalización explícita del aspecto de "ilusión monetaria" que afecta la función de oferta de trabajo ...
Carlos Eduardo Vélez Echavarria
doaj   +1 more source

GESTIÓN DE CASOS PARA PERSONAS CON ACCIDENTE CEREBROVASCULAR: ESTUDIO CUASIEXPERIMENTAL

open access: yesCogitare Enfermagem, 2022
Objetivo: comparar el efecto de la intervención de la enfermera gestora de casos sobre los factores de riesgo y la presión arterial en personas que han sufrido un accidente cerebrovascular.
Pollyanna Bahls de Souza   +5 more
doaj   +1 more source

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