Resultados de búsqueda - "ecology"

Assessment of fine scale population genetic diversity and regeneration in Congo basin logged forests por Evrard, Q., Dainou, K., Hardy, O., Duminil, J., Lagoute, P., Bracke, C., Doucet, J.L.

“…In this study, we integrate ecological and genetic approaches to characterize the regeneration potential of a set of priority timber species by (i) estimating pollen dispersal distances at various tree population densities, and (ii) evaluating the impact of increasing spatial isolation on mating characteristics and tree fitness. …”
Enlace del recurso

Combining ability and heterosis of elite drought-tolerant maize inbred lines evaluated in diverse environments of lowland tropics por Adebayo, M.A., Menkir, A., Blay, E., Gracen, V., Danquah, E.Y.

“…The hybrids were evaluated together with four checks across six environments in the rainforest and savannah agro-ecologies of Nigeria between 2011 and 2012. The parental inbred lines were also evaluated in separate trial in each location. …”
Enlace del recurso

A new Bactrocera species in Benin among mango fruit fly (Diptera: Tephritidae) species por Vayssières, Jean-François, Goergen, Georg E., Lokossou, O., Dossa, P., Akponon, C.

“…Most of the tephritid species found on mangos during our experiments had already been observed previously in other West African countries except B. invadens, an invasive species lately described. Ecological and behavioral studies will be necessary in order to plan and to apply optimal methods for controlling this new pest of major economic importance in West Africa.…”
Enlace del recurso

Socioeconomic and environmental effects of China's Conversion of Cropland to Forest Program after 15 years: a systematic review protocol por Gutiérrez Rodríguez, L., Hogarth, N.J., Zhou, W., Putzel, L., Xie Chen, Zhang, Kun.

“…After these events, China’s forest policy underwent a significant reorientation towards ecological conservation and rural development, a process epitomized by the Conversion of Cropland to Forest Program (CCFP). …”
Enlace del recurso

Improved region-specific emission factors for enteric methane emissions from cattle in smallholder mixed crop: livestock systems of Nandi County, Kenya por Ndung’u, Phyllis, Butterbach-Bahl, Klaus, Merbold, Lutz, Goopy, John P., Bebe, B.O., Ondiek, J.O.

“…Using the data from measurements of liveweight and liveweight change, milk production and locomotion collected from 1143 cattle in 127 households across 36 villages over three major agro-ecological zones covering a full year, we estimated total metabolic energy requirements. …”
Enlace del recurso

Wind disrupts trail pheromone communication in the leaf-cutting ant Acromyrmex lobicornis por Alma, Andrea Marina, Buteler, Micaela, Martinez Von Ellrich, Andres, Corley, Juan Carlos

“…Although wind is a ubiquitous component of ecological systems and might affect pheromone communication, its effects have not been studied in depth. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

Family Vegetable Garden Manual

“…The main aim of this programme is therefore to improve food security, increasing availability, accessibility and production of food with an agro-ecological approach. It fosters the participation and organization of our communities to that aim so that they become protagonists in a gradual process of social and economic growth. …”
Enlace del recurso

Hunting and Habitat Destruction Drive Widespread Functional Declines of Top Predators in a Global Deforestation Hotspot por Romero Muñoz, Alfredo, Bleyhl, Benjamin, Benitez López, Ana, Camino, Micaela, Decarre, Julieta, Nanni, Ana Sofía, Noss, Andrew J., Giordano, Anthony J., Quiroga, Verónica, Torres, Ricardo, Thompson, Jeffrey J., Villalba, Laura, Nuñez Regueiro, Mauricio M., De Angelo, Carlos, Kuemmerle, Tobias

“…More generally, our research underscores the value of spatially detailed, mechanistic models for disentangling the complex dynamics of multiple threats on ecological functioning at broad scales.…”
Enlace del recurso
Enlace del recurso
Enlace del recurso

Does disjunct mean differentiated? Variability analysis of disjunct populations of the neotropical tree Anadenanthera colubrina var. cebil in phenotypic traits por Bruera, Camila Rocío, García, María Victoria, Pastorino, Mario Juan

“…To determine the possible relationship between phenotypic variability of morphological traits and ecological environmental variables, a redundancy analysis (RDA) was performed considering climate data from the CHELSA database, the enhanced vegetation index, and main soil depth. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

Degradation of soil microbiome and carbon dynamics in response to overgrazing in Austral wetland ecosystems por Toledo, Santiago, Diaz, Boris Gaston, Duarte Guardia, Sandra, Peri, Pablo Luis

“…However, overgrazing threatens their ecological integrity, causing varying levels of degra­ dation that alter soil physical, chemical, and biological properties. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

A genetic approach to the species problem in wild potato por Camadro, Elsa Lucila, Erazzu, Luis Ernesto, Maune, Juan Federico, Bedogni, Maria Cecilia

“…Wild potatoes are native to the Americas, where they present very wide geographical and ecological distribution. Most are diploid, obligate out‐crossers due to a multiallelic gametophytic self‐incompatibility (S) locus that prevents self‐fertilisation and crossing between individuals carrying identical S‐alleles. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

Archetypal temporal dynamics of arid and semi-arid rangelands por Bruzzone, Octavio Augusto, Easdale, Marcos Horacio

“…The way in which temporal dynamics structure ecological systems under the influence of a changing environment has long interested ecologists. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

Growth patterns analysis of pomegranate fruits of 'Mollar de Elche' during the final phase of development and maturation por García-González, J. F., Intrigliolo, Diego S., Parra, J., Guerra, Diego, Ortiz, M., Bartual, Julián

“…The present study was carried out under the agro-ecological conditions of Elche (Alicante, Spain) Determinations were carried out during the late stages of fruit development and maturation (i.e., August 10th (at 92 days after full bloom (DAFB)) to October 26th (169 DAFB)). …”
Enlace del recurso
Enlace del recurso

Influence of scattered trees in grazing areas on soil properties in the Piedmont region of the Colombian Amazon por Álvarez, Faver, Casanoves, Fernando, Suárez, Juan C.

“…The interactions between trees and soil are ecological processes that allow the modification of the biology, fertility, and physics of the soil. …”
Enlace del recurso
Enlace del recurso

El suelo como factor ecológico en el desarrollo de la vegetación en el centro-oeste del Brasil por Alvim, P. de T., Araujo, W. A.

“…The authors conclude that the distribution of cerrado within its phytogeographic region is apparently controlled by the soil more than by any other ecological factors. The cerrado plants are apparently tolerant to soils low in calcium content and with low pH, where typical forest trees and good forage plants cannot grow. …”
Enlace del recurso

Evaluation of Phlebiopsis gigantea and Pseudomonas spp. for biocontrol of Heterobasidion spp. in Norway spruce por Gžibovska, Zelma

“…More consistent and effective genotypes of P. gigantea isolates would benefit the forest industry as well as reduce ecological risks connected with using just one isolate for treatment of conifer stumps locally. …”
Enlace del recurso

Performance of susceptible and tolerant juvenile Fraxinus excelsior infected by Hymenoscyphus fraxineus, the invasive pathogen causing ash dieback por Jonsson, Axelina

“…European ash (Fraxinus excelsior), a tree species with both economic and ecological importance, has experienced a steady population decline in Europe since the early 1990’s due to ash dieback, caused by the pathogen Hymenoscyphus fraxineus. …”

Mänsklig påverkan på mindre vattendrag i skogslandskapet por Bodegård, Gabriele

“…Furthermore, the model is easy to use for persons without aquatic – ecological competence.…”
Enlace del recurso

The Galapagos Islands - a conflict of interests por Arbin, Louise

“…This drastically changed the islands economy, as well as the socio-ecological relations. This has resulted in the current situation at Galapagos today, which is a conflict of interest between the conservation agenda wanting to conserve the nature and wildlife and keep it “un-touched”, the tourism that is now the backbone of the local economy, and the local people who has to live in relation to both the conservation regulation as well as the rapidly increasing tourism and development of the islands.…”
Enlace del recurso

Weed Seed Bank Assessment in Organic Crop Rotations : Comparing the weed suppression effect from intercropping field pea and spring barley, with sole cropping and black fallow por Helgesson, Harald

“…Consequently, other measures relying more on the ecological properties controlling weeds have been explored. …”