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Environmental concentrations of boron, LAS, EDTA, NTA and Triclosan simulated with GREAT-ER in the river Itter.
A computer simulation of the environmental concentrations of some typical consumer-product ingredients was performed using the geo-referenced exposure model GREAT-ER (Geo-referenced RegionalExpand
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Factors controlling the morphology and volume (V)–length (L) relations of permanent gullies in the Northern Ethiopian Highlands
Small-scale aerial photographs and high-resolution satellite images, available for Ethiopia since the second half of the twentieth century as for most countries, allow only the length of gullies toExpand
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Land degradation in the Ethiopian highlands
The high soil erosion rates in the Ethiopian highlands find their causes in the combination of erosive rains, steep slopes due to the rapid tectonic uplift during the Pliocene and Pleistocene, andExpand
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North Ethiopian Afro‐Alpine Tree Line Dynamics and Forest‐Cover Change Since the Early 20th Century
High-altitude forests are very important for local livelihood in the vulnerable environment of the densely populated tropical highlands. Humans need the ecosystem services of the forest and directlyExpand
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Land cover dynamics in the Simien Mountains (Ethiopia), half a century after establishment of the National Park
The Simien Mountains house several endangered and endemic wildlife species and provide important ecosystem services. Despite its regional environmental importance, the Simien Mountains are listed asExpand
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Dogu’a Tembien’s Tropical Mountain Climate
The Ethiopian highlands have a complex climate pattern due to its distinct physiography, which causes a large horizontal and lateral variability in climate conditions. In the northern Dogu’a TembienExpand
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Land Use and Cover Dynamics Since 1964 in the Afro-Alpine Vegetation Belt: Lib Amba Mountain in North Ethiopia
Human-induced land use and land cover (LUC) changes threaten the ecosystem services of the vulnerable tropical afro-alpine vegetation. Several LUC change studies are available for the EthiopianExpand
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Assessing spatio-temporal rainfall variability in a tropical mountain area (Ethiopia) using NOAA’s rainfall estimates
Seasonal and interannual variation in rainfall can cause massive economic loss for farmers and pastoralists, not only because of deficient total rainfall amounts but also because of long dry spellsExpand
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Tree line dynamics in the tropical African highlands – identifying drivers and dynamics
Questions What are the potential drivers of tree line change in the tropical African highlands? Are the temperature-sensitive tree lines in these highlands shifting as a result of climate change?Expand
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The effect of rainfall on spatio-temporal variability in cropping systems and duration of crop cover in the Northern Ethiopian Highlands
In the Northern Ethiopian Highlands, ca.33% of the land is cropland, which is mainly cultivated by smallholders who based on indigenous knowledge plan their cropping system on the basis ofExpand
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