Results 1 to 10 of about 948 (134)

Analyzing the relative importance of habitat quantity and quality for boosting pollinator populations in agricultural landscapes. [PDF]

Conserv Biol
Abstract To increase pollinator populations, international policy targets minimum levels of seminatural habitat cover, but it is unknown whether improving the quality of existing habitats could bring similar benefits without the need of reducing cropland area. Using data we collected in 26 Italian agricultural landscapes during the entire flying season,
Fijen TPM, Bishop GA, Ganuza C, Scheper J, Kleijn D.   +4 more
europepmc   +2 more sources

ABUNDANCIA DE Ucides occidentalis (OCYPODIDAE) EN UN ÁREA DE MANGLAR DEL GOLFO DE GUAYAQUIL, ECUADOR

Acta Biológica Colombiana, 2023
Ucides occidentalis es un cangrejo de importancia pesquera en Ecuador. El objetivo del presente trabajo fue estimar su abundancia en un área de uso y custodia de manglar, en el Golfo de Guayaquil, Ecuador.
Mercy Troya-Castro, René Zambrano
doaj   +1 more source

Índice delictivo y su relación con densidad poblacional y el Índice de Desarrollo Humano en el estado de Guanajuato [PDF]

Acta Universitaria, 2018
En este artículo se determinan factores que influyen en el Índice Delictivo (ID) de los municipios de Gua-najuato y se estudia su relación con la densidad poblacional y el Índice de Desarrollo Humano (IDH).
J.Refugio Vallejo Gutierrez, Norma Isela Villegas Barrientos   +1 more
doaj   +1 more source

Parámetros poblacionales de la rana dorada, Phyllobates terribilis (Myers et al., 1978) (Dendrobatidae), en una localidad de Buenaventura, Valle del Cauca, Colombia

Biota Colombiana, 2018
El objetivo de este estudio fue estimar el tamaño, densidad, probabilidad de supervivencia (φ), de detección (p), y describir las condiciones del hábitat de una población de la rana dorada (Phyllobates terribilis, Dendrobatidae) en bajos del río Naya ...
Stefhania Alzate-Lozano, Rodrigo Lozano-Osorio, Carlos Galvis   +2 more
doaj   +5 more sources

Coexistence across space and time: Social‐ecological patterns within a decade of human‐coyote interactions in San Francisco

People and Nature, Volume 5, Issue 6, Page 2158-2177, December 2023., 2023
Abstract Global change is increasing the frequency and severity of human‐wildlife interactions by pushing people and wildlife into increasingly resource‐limited shared spaces. To understand the dynamics of human‐wildlife interactions and what may constitute human‐wildlife coexistence in the Anthropocene, there is a critical need to explore the spatial,
Christine E. Wilkinson, Tal Caspi, Lauren A. Stanton, Deb Campbell, Christopher J. Schell   +4 more
wiley   +1 more source

Densidad poblacional y características del hábitat del chorlo llanero (Charadrius montanus) en sus sitios invernales en el noreste de México

Huitzil, 2023
El chorlo llanero (Charadrius montanus) habita principalmente los pastizales bajos de Norteamérica, donde cuyas poblaciones han disminuido debido a la pérdida de su hábitat.
Gabriel Ruiz Ayma, Amanda Cavazos Alvarez , Antonio Guzmán Velasco, Alina Olalla Kerstupp, Nadia Tamara Rubio Cisneros, José Gerardo Ham Dueñas, Jose Igancio González Rojas   +6 more
doaj   +1 more source

Berries and bullets: influence of food and mortality risk on grizzly bears in British Columbia Bayas y balas: influencia de la alimentación y el riesgo de mortalidad en los osos grizzly en la Columbia Británica Des baies et des balles: influence de l'alimentation et risques de mortalité chez les ours grizzlys de la Colombie‐Britannique

Wildlife Monographs, Volume 213, Issue 1, November 2023., 2023
We developed a spatialized surface for the primary food of grizzly bears in southeast British Columbia. After using this huckleberry patch layer to model habitat selection, fitness, and density, in a bottom‐up top‐down paradigm, we found that huckleberry patches near forestry roads contribute very little to fitness and density.
Michael F. Proctor, Clayton. T. Lamb, John Boulanger, A. Grant MacHutchon, Wayne F. Kasworm, David Paetkau, Cori L. Lausen, Eric C. Palm, Mark S. Boyce, Christopher Servheen   +9 more
wiley   +1 more source

Incorporating multidimensional behavior into a risk management tool for a critically endangered and migratory species

Conservation Biology, Volume 37, Issue 5, October 2023., 2023
Abstract Conservation of migratory species exhibiting wide‐ranging and multidimensional behaviors is challenged by management efforts that only utilize horizontal movements or produce static spatial–temporal products. For the deep‐diving, critically endangered eastern Pacific leatherback turtle, tools that predict where turtles have high risks of ...
Nicole Barbour, George L. Shillinger, Eliezer Gurarie, Aimee L. Hoover, Philippe Gaspar, Julien Temple‐Boyer, Tony Candela, William F. Fagan, Helen Bailey   +8 more
wiley   +1 more source

Causes of the recent decline of a Lesser Kestrel (Falco naumanni) population under an enhanced conservation scenario

Ibis, Volume 165, Issue 2, Page 388-402, April 2023., 2023
Lesser Kestrel Falco naumanni (Fleischer, 1818) populations have been one of the best monitored bird populations in Spain over the last 70 years. These populations suffered a sharp decline between the 1950s and 1990s. Since then, periodic censuses showed a population increase that lasted until the 2010s.
José Miguel Aparicio, Alberto Muñoz, Pedro J. Cordero, Raúl Bonal   +3 more
wiley   +1 more source

Population dynamics of recovering apex predators: Golden eagles in a Mediterranean landscape

Journal of Zoology, Volume 319, Issue 2, Page 99-111, February 2023., 2023
Density‐dependence, resource availability and human pressure at territorial level drive population dynamics in a recovering apex‐predator population. Abstract Apex predators play a critical role in shaping the biological and functional diversity of ecosystems.
A. Fernández‐Gil, J. A. Lamas, L. M. Ansola, J. Román, M. de Gabriel Hernando, E. Revilla   +5 more
wiley   +1 more source