Showing papers in "Journal of Arid Environments in 1986"

TL;DR: Eight dominating grasses from two arid to semi-arid areas in the Kalahari, Botswana, were studied over 3 years regarding in vitro dry matter digestibility and content of crude protein, phosphorus, calcium and moisture.

TL;DR: A detailed statistical study of the Gran Desierto showed that seasonality does not vary within the area, but that both the expected amount of rainfall and the frequency of rainy periods are lower towards the west.

TL;DR: Possibilites d'exploitation d'especes fruitieres and legumieres endemiques de la zone sahelienne pour une mise en valeur agricole, ecologique and economique de cette region africaine.

TL;DR: Lunettes are mounds of aeolian sediment that occur on the lee sides of pans (closed depressions) in Bostwana and South Africa.

TL;DR: Botswana's climate is semi-arid with vast areas lacking surface water, its rolling sands support mosaics of grass and savanna, which support some 75 species of wild food and methods of usage.

TL;DR: The burrowing biology and spatial distribution of the desert scorpion Paruroctonus mesaensis was investigated and light and temperature were found to act as environmental burrowing cues; there was no evidence of endogenous burrowing rhythms.

TL;DR: In this article, the erosion and subaerial deposition of fine textured particles caused by wind erosion from playas was sampled over a 5-year period using a system of particle gauges.

TL;DR: A land image-based resource information system (LIBRIS) has been developed to support rangeland resource management on both regional and local scales as discussed by the authors, which is a geographic information system developed to integrate Landsat spectral data with other relevant spatial data sets.

TL;DR: Ant species richness across the Namib Desert was strongly correlated with mean annual rainfall, an index of primary productivity, and the majority of Namib desert ants were either granivorous or honeydew-nectar feeders, the remainder being either insectivores or omnivores as discussed by the authors.

TL;DR: It is hypothesized that the likely mechanism of these spacing patterns is differential compatibility of root systems, although specificity of germination sites may also play a role; this mechanism is hypothesized to be of importance in the maintenance of diversity in desert shrubs.

TL;DR: There are many species of fruit trees and vegetables which grow very well in the arid and semi-arid areas of north-west China and their values, usages and potential usages are given.

TL;DR: The vegetation types in north-central Saudi Arabia are dominated by Mediterranean flora, except on the Arabian Shield peneplains, where the vegetation is typical of the saharo-sindian deserts as mentioned in this paper.

TL;DR: Parabolic dune fields are described at several sites in the Jafurah desert, Eastern Province, Saudi Arabia as discussed by the authors, where they are developed both in sandsheets and the downwind plumes of barchan horns.

TL;DR: In this article, textural parameters, such as mean grain size and sorting, were used to characterize past depositional processes within Skull Creek Dunes in the Catlow Valley, Oregon.

TL;DR: It is suggested that the density of scorpions is primarily influenced by soil characteristics as they relate to the burrowing behaviour of Paruroctonus utahensis, and only secondarily related to vegetation through the latter's covariation with soil texture.

TL;DR: In this paper, surface soil samples from beneath perennial plants and the nonvegetated areas between plants along a permanent transect in southern New Mexico were evaluated for total nitrogen, soluble salts, cation exchange capacity, particle size distribution, pH and moisture retention.

TL;DR: The above-groundnet primary production (ANPP) and below-ground net production (BNP) was estimated for a grassland community dominated by Stipa tenuis and Piptochaetium napostaense.

TL;DR: Overcrowding, temperature and the skin microclimate were found to be important factors in the epizootiology of the disease.

TL;DR: The conceptual basis of this work has evolved in accordance with the development of Israeli agriculture as mentioned in this paper, and progress achieved in eight projects is reviewed in this paper, including perennial fodder plants for improvement of dryland pasture, selection and cultivation of halophytes with seawater irrigation, industrial crops (jojoba, buffalo gourd, evening primrose, senna), drought-and salinity-resistant ornamentals and new ornamental products for export (cut flowers, cut branches and potted plants).

TL;DR: There is a need for more field work and tests, to ascertain the food value content of the plants whose roots are used for food, as obtained from various published and unpublished sources.

TL;DR: The Forest and Range Organization of Iran has applied different improvement practices on the rangelands, depending on local climatic and edaphic conditions, to stabilize the sand dunes and establish adapted species to complete stabilization.

TL;DR: It is surmized that dilution of milk, when drinking water is scarce, is a physiological phenomenon for the survival of the young in arid areas and there is an endocrine regulation system for the dilutions of milk.