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Displaying 1551 - 1555 of 1605Hanfets, a barley and wheat mixture in Eritrea: Yield, stability and farmer preferences
Hanfets is a popular mixture of wheat and barley grown in the highlands of Eritrea and Tigray (Northern Ethiopia). In this study, we tested 16 experimental hanfets constituting all possible combinations of four barley landraces and four wheat (two landraces and two varieties) at three locations in Eritrea for 3 years during which farmers (both men and women) made selections of suitable hanfets. Across locations and years, the grain yield of hanfets on average was similar to that of the pure barley but significantly higher than that of wheat.
Time lags in provision of habitat resources through revegetation
Broadscale land use changes are occurring rapidly in rural landscapes worldwide, within which revegetation with native plant species to increase the area of suitable habitat is a key activity. Current models for planning revegetation are based solely on the spatial arrangement of new and remnant vegetation. Making wise decisions about revegetation requires projective models of ecological responses to revegetation, but there are few appropriate data.
Where to put things? Spatial land management to sustain biodiversity and economic returns
Expanding human population and economic growth have led to large-scale conversion of natural habitat to human-dominated landscapes with consequent large-scale declines in biodiversity. Conserving biodiversity, while at the same time meeting expanding human needs, is an issue of utmost importance. In this paper we develop a spatially explicit landscape-level model for analyzing the biological and economic consequences of alternative land-use patterns.
Distribution and interaction of white-tailed deer and cattle in a semi-arid grazing system
In order to optimize production, range managers need to understand and manage the spatial distribution of free-ranging herbivores, although this task becomes increasingly difficult as ranching operations diversify to include management of wildlife for recreational hunting. White-tailed deer are sympatric with cattle throughout much of their range and are a valuable commodity in southern rangelands. The spatial distribution of deer and cattle was monitored over 1 year during four trials each lasting 12 days.
What factors influence obtaining forest certification in the U.S. Pacific Northwest
This study explores the factors that influence obtaining forest certification in the U.S. Pacific Northwest (PNW). A mail survey sent to certified and non-certified forest managing entities (public agencies, forest industry and non-industrial private forest owners) was conducted. The study hypothesized the importance of sixteen biogeographical and socio-economic factors in facilitating the adoption of forest certification. Three of these factors (market pressure, land ownership pattern and water-body abundance) were found to influence the decision to obtain forest certification in the U.S.