Results 31 to 40 of about 345,033 (264)

Threats to and management of Natura 2000 protected areas relative to agricultural practices

open access: yesConservation Biology, EarlyView.
Abstract The Natura 2000 (N2K) network combines biodiversity protection and socioeconomic targets. Human activities, such as agricultural practices, can affect biodiversity in N2K sites in diverse ways. Limiting activities with negative impacts while enforcing land management that supports biodiversity is crucial for effective conservation.
Giorgio Zavattoni   +7 more
wiley   +1 more source

Implantación de algunas prácticas del manejo sostenible de tierras en una finca agropecuaria en Cienfuegos, Cuba

open access: yesAgroecosistemas, 2021
Durante cinco años se desarrollaron trabajos de campo contenidos dentro del Manejo Sostenible de Tierras (MST) en una finca ganadera de la zona pre montañosa de la provincia de Cienfuegos, la cual está ubicada sobre suelos Pardos Grisáceos.
Arteaga Rodríguez, Osvaldo   +3 more
doaj  

Anthropic pressure on drainage basins in fragile ecosystems: variations in the organic carbon stock associated to fluvial morphological changes

open access: yesCuadernos de Investigación Geográfica, 2019
Cambios antrópicos en el área de drenaje de cuencas hidrológicas determinan los procesos de erosión dominante y las fuentes de sedimento, movilizando ciertos reservorios (pools) de carbono.
A. Halifa-Marín   +3 more
doaj   +1 more source

Geographic risks to functional groups of mammals and birds from habitat loss in Mexico

open access: yesConservation Biology, EarlyView.
Abstract There is a need to quantify the impact of habitat loss due to anthropogenic factors on different aspects of biodiversity, such as functional trait diversity represented by functional groups (FGs). We developed a metric to assess the weighted risk of loss of habitat for 33 FGs of mammals and 36 FGs of birds in Mexico based on potential ...
Fernando Mayani‐Parás   +4 more
wiley   +1 more source

Development and application of a multi-factorial sediment connectivity index at the catchment scale

open access: yesCuadernos de Investigación Geográfica, 2013
This paper presents a new methodology to assess sediment connectivity at the catchment scale. The proposed index CCI (Catchment Connectivity Index) is based on a combination of factors in a GIS environment that determine the connectivity of sediment in ...
J.M. Quiñonero-Rubio   +2 more
doaj   +1 more source

Glyphosate and AMPA concentrations in wind-blown material under field conditions [PDF]

open access: yes, 2018
Agricultural intensification in fragile arid and semiarid environments has led to an increase in soil degradation, mainly through wind erosion. Argentina is an agricultural and cattle-farming country, which has increased its productivity in the last few ...
Aimar, Silvia Beatriz   +4 more
core   +1 more source

Role of freshwater availability and terrestrial land‐cover change in the distribution of a declining, terrestrial, insectivorous bird

open access: yesConservation Biology, EarlyView.
Abstract Insectivorous, Afro‐Palearctic migrant birds provide cross‐border ecosystem services, but many are declining rapidly. The complex life cycle of migrant birds makes their conservation difficult, but understanding where they spend time during the breeding season can help indicate where those actions will be most effective.
Catrin F. Eden   +5 more
wiley   +1 more source

Distribución de especies de matorral en suelo ácidos y básicos de la Sierra de Grazalema, sur de España [PDF]

open access: yes, 2002
Se ha estudiado la presencia de especies leñosas de matorral mediterráneo en suelos de pH ácido y básico en la Sierra de Grazalema. Se han muestreado 137 transectos de vegetación de diferentes comunidades de matorral mediterráneo, donde se han ...
Gallego Fernández, Juan Bautista
core  

Height and phytotelm size affect the invertebrate communities of epiphytic bromeliads in the Amazon rainforest

open access: yesEcological Entomology, EarlyView.
The height at which epiphytic bromeliads are found affects the invertebrate community composition within them. The size of epiphytic bromeliads is positively correlated with species richness of both aquatic and terrestrial invertebrates. Whether bromeliads were found in primary or secondary forest did not have a significant effect on the community of ...
Xaali O'Reilly‐Berkeley   +6 more
wiley   +1 more source

Nuestros suelos : al mar [PDF]

open access: yes, 2019
Gustavo A. Tirado (biografía): Nació en Valverde, República Dominicana. Es ingeniero agrónomo y tiene una maestría en suelos y recursos naturales. Fue director del Departamento de Recursos Naturales de la Universidad Nacional Pedro Henríquez Ureña (UNPHU)
Tirado F., Gustavo A.
core  

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