A study was conducted on the Assa Range Management Research Area in the semi-arid rangeland of northwestern Libya in 1976 to obtain quantitative data on the composition and structure of the vegetation types, obtain information on the soil associated with the major vegetation typ…
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In arid regions, water is not only a limiting factor for forage production hut the effectiveness of range improvement practices (e.g., brush control and seeding) also depend upon soil moisture conditions. Improved rainwater harvesting systems compatible, with the hydrological ph…
During the past decade, there has been a clear recognition of the relationship between environment and development, and that it is through the process of development that environment is often negatively affected. Therefore, to minimize the destructive effect of development, plan…
Recent developments in the eastern Arabian Peninsula, climatic changes, and changes in the social and economic status of nomadism have been considered prime factors leading to land degradation, soil erosion and eventual desertification in the region. This thesis is based on long…
The purpose of this study is to evaluate an alternative approach to pastoral development planning which stipulates that technical interventions be based on existing management in order to address real problems in ways which are acceptable to recipient pastoralists. If the approa…
The primary purpose of this study was to develop state-of-the-art farming methodologies, including technology for increasing food production in Nigeria. The study was directed toward finding methods for improving farm production of staple food crops (yam, cassava, potatoes, corn…
The main objective of this research was to assess the nutritional status of sheep and goats grazing two rangeland types in Baluchistan, Pakistan. These types were Artemisia maritima/Haloxylon griffithii association represented by the Zarchi Field Station and Cymbopogon shoenanth…
A defoliation study on napier and buffel grass was conducted at the National Agricultural Research Centre, Islamabad, Pakistan. The grasses were established during spring 1983 and the clipping treatments were applied in August 1986. Four harvesting intervals; control, 3, 6, and …
The objectives of this dissertation were to identify soil and vegetation changes due to grazing by livestock and to develop guidelines for monitoring the impact of livestock in the Sahelian zone of Africa. The study was conducted in eastern Senegal during 1983 to 1985. The basic…
Advanced Very High Resolution Radiometer (AVHRR) Local Area Coverage (LAC) Normalized Difference Vegetation Index (NDVI) was calibrated to herbaceous biomass (kg/ha) for the central pastoral zone of the Sahelian country of Niger in 1986-1988. Ground truth sites (GTS's) were samp…
Livestock grazing affects various hydrologic processes such as infiltration, and sediment production. Overgrazing affects the range site productivity, water quality, and siltation of reservoirs. Range scientists are concerned about regulating livestock grazing which can assure a…
Differences in seasonal habitat use by female Rio Grande wild turkeys (Meleagris gallopavo intermedia) were evaluated on two study sites (Encino and Laureles Divisions of the King Ranch) in south Texas. Wild turkeys have been important components of the Rio Grande Plains and Low…
This research was conducted on 52 ecotypes of eight native grass species of Iran at Homand Range Experiment Station, near Damavand, Iran, to assess: (a) the differences in morphological and phenological characteristics, (b) to evaluate differences in herbage yield, and (c) deter…
Wild turkeys (Meleagris gallopavo ) occur intermittently throughout Trans-Pecos, Texas. In the lower desert of the Trans-Pecos, turkeys are strongly associated with the limited amount of riparian habitat. Turkey populations in the region are thought to be on the increase, howeve…
Detailed studies of the Gould's turkey (Meleagris gallopavo mexicana) in its original range in Mexico are lacking. I investigated the distribution, habitat use, diet and biology, and limiting factors of Gould's turkey in the state of Chihuahua, Mexico. The study was conducted fr…