Filters: Tags: desertification (X)
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A battery of questions was developed and applied to different stakeholders immersed in knowledge of the condition and the use of grazing of grasslands. One hundred people were surveyed amongst livestock producers (both from private ranches and from communal ejidos), and students and researchers at regional institutions involved in agricultural sciences in different states of Mexico: Coahuila, Durango, San Luis Potosí, and Jalisco. The objective of the survey was to determine aspects of stakeholders’ interpretation of the condition of grasslands in their region under conditions of extensive grazing, such as soil condition, harvest efficiency, vegetation condition, openness to community organizing of grazing, capacity...
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Mexico,
Spanish,
cultural,
desertification,
economic,
Categories: Publication;
Types: Citation;
Tags: Argentina,
Arid environments,
Biosphere reserves,
D 04700 Management,
Desertification,
Categories: Publication;
Types: Citation;
Tags: D 04692 Environmental perception,
Desertification,
Ecology Abstracts,
Environmental perception
Categories: Publication;
Types: Citation;
Tags: Arid environments,
Burkina Faso,
Climatic conditions,
Conferences,
Environmental changes,
Categories: Publication;
Types: Citation;
Tags: Agricultural Practices,
Agriculture,
Compaction,
Degradation,
Desertification,
Categories: Publication;
Types: Citation;
Tags: Air pollution,
Arid environments,
Climatic changes,
Desertification,
Environmental degradation,
Categories: Publication;
Types: Citation;
Tags: Arid environments,
Botswana, Kalaharih,
Botswana, Kalaharih,
Environmental changes,
Environmental degradation,
1. Soil disturbance by animals affects the availability of water, nutrients, sediment and seeds, which are critical for the maintenance of functional ecosystems. We examined long-lived faunal structures across six vegetation communities in the northern Chihuahuan desert of New Mexico, USA, testing the proposition that disturbances in undesertified grassland differ in magnitude and effect from those in desertified grassland. 2. Vertebrate and invertebrate disturbances totalled 18.9 structures ha−1 across 18 sites. The most common were pits and mounds of American badgers (Taxidea taxus, 32%), nests of the ant Aphaenogaster cockerelli (18.8%) and mounds of kangaroo rats (Dipodomys spectabilis, 31%). 3. Desertification...
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Chihuahuan desert,
Journal of Ecology,
animal activity,
biopedturbation,
desertification,
Categories: Publication;
Types: Citation;
Tags: Arid regions,
Decision making,
Desertification,
Digital terrain model,
EE 731.1 Control Systems; EE 444.1 Surface Water; EE 732.2 C,
Grasslands comprise a small part of the Chihuahuan Desert but are vital to the biological diversity of the ecoregion. Characteristic grasses of the Chihuahuan Desert are tobosa (Pleuraphis mutica) and black grama (Bouteloua eriopoda) but other common species include alakali sacaton (Sporobolus airoides), big alkali sacaton (S. wrightii), mesa dropseed (S. flexuosus), blue grama (B. gracilis), sideoats grama (B. curtipendula ), hairy grama (B. hirsuta), slender grama (B. filiformis), chino grama (B. brevista), spruce top grama (B. chondrosioides), bush muhly (Muhlenbergia porteri), several three awns (Aristida spp.), and fluff grass (Dasyochloa pulchela) (Johnson 1974, Dinerstein et al. 2000). Many of the sites discussed...
Categories: Publication;
Types: Citation,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: English,
Madrean,
Spanish,
agriculture,
assessment,
Medium-sized kangaroo rats (Dipodomys spp. Gray) function as keystone species in the dynamics of desert bunchgrasses. We tested the hypothesis that kangaroo rat graminivory leads to reduced grass growth and inflorescence production, and that kangaroo rat grass consumption reflects their preferences for open microhabitats. We excluded kangaroo rats from grasses, and measured tiller loss, leaf and tiller growth and inflorescence production. We recorded the extent of tiller loss in grasses varying in tussock size or the extent of surrounding cover. Consumption of tillers by kangaroo rats was extensive, peaking in late summer. Grasses protected from kangaroo rat graminivory showed elevated leaf and tiller growth and...
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Journal of Arid Environments,
desert bunch grasses,
desertification,
dipodomys merriami,
dipodomys ordii,
Categories: Publication;
Types: Citation;
Tags: Africa, North,
Arid environments,
Asia,
Biodiversity,
Biological diversity,
Categories: Publication;
Types: Citation;
Tags: Arid Lands,
Comparison Studies,
Desertification,
Grasslands,
Habitats,
Categories: Publication;
Types: Citation;
Tags: Arid Lands,
China, People's Rep.,
Climatic Changes,
Cores,
Desertification,
Categories: Publication;
Types: Citation;
Tags: Climatic Changes,
Degradation,
Desertification,
Erosion,
Hydrology,
Categories: Publication;
Types: Citation;
Tags: China, People's Rep.,
China, People's Rep., Xinjiang,
Desertification,
Drought and floods,
Droughts,
Categories: Publication;
Types: Citation;
Tags: Aves,
Birds,
D 04130 Arid zones,
Ecology Abstracts,
Mammalia,
Categories: Publication;
Types: Citation;
Tags: Dendochronology,
Desertification,
Drought,
EE 444 Water Resources; EE 443.3 Precipitation; EE 445.2 Wat,
Environmental Engineering Abstracts,
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