Abstract. The xtent ofalbedo change resulting from anthropogenic modification of the vegetation cover over the last century hasbeen investigated in West Africa. The climatic implications ofthese changes are briefly discussed. West Africa sp a ns suite ofvegetation zones ranging latitudinally northward from tropical rainforest tod ert scrub, and …
Planned changes to land use in West Africa have been proposed to both combat desertification and to preserve biodiversity in the region, however, there is an urgent need for tools to assess the effects of these proposed …
Plant observations from West Africa. The region is defined here following the UN definition, but excluding the islands of St. Helena, Tristan da Cunha and Ascension. This is roughly …
Title. Africa vegetation map. Abstract. The UNESCO/AETFAT/UNSO (White's) Vegetation Map of Africa was published in 1983 after more than 15 years of collaboration between UNESCO and AETFAT (Association pour l'Etude Taxonomique de la Flore De l'Afrique Tropicale). The original product comprises three map sheets at a scale …
SEVIRI data at 15 min temporal resolution were used to derive the Temperature and Vegetation Dryness Index (TVDI) that served as SM proxy within the disaggregation process. West Africa (3°N 26°W; 28°N 26°E) was selected as a case study as it presents both an important North-South climate gradient and a diverse range of …
Reduction of natural vegetation cover in the savannah of West Africa constitutes a pressing environmental concern that may lead to soil degradation.
We assess 32 years of vegetation change in the West African Sudano-Sahelian region following the drought events of the 1970s and 1980s. Change in decadal mean rain use efficiency is used to …
Proxy records have shown that the Mid-Holocene was a period of humid conditions across West Africa, with an enhanced West African Monsoon (WAM) and vegetated conditions in areas currently characterized by desert, often referred to as the Green Sahara. However, General Circulation Models regularly struggle with recreating …
Plant observations from West Africa. The region is defined here following the UN definition, but excluding the islands of St. Helena, Tristan da Cunha and Ascension. This is roughly the same as the area covered by the Flora of West Tropical Africa, except for the northern boundary and western parts of Cameroon.
Based on pollen analysis of a sediment core from the Atlantic Ocean off Liberia the West African vegetation history for the last 400 ka is reconstruct…
PDF | On Jan 1, 2010, Karen Hahn-Hadjali and others published Vegetation of West Africa | Find, read and cite all the research you need on ResearchGate
A high sensitivity of climate projection to dynamic vegetation feedback was found mainly in semiarid areas of West Africa, with little signal in the wet tropics.
The rain forests of West Africa have been designated as one of the world's hotspots of biodiversity. They extend from Ghana to Senegal and are referred to as the …
This is a database for vegetation data from West Africa, i.e. phytosociological and dendrometric relevés as well as floristic inventories. You need to create a free account to access the full functionality of the database. However, guests may search for data and view public datasets. Registered users are provided with a private working ...
The vegetation in West Africa is distributed in zones that generally correlate with rainfall patterns. From south to north these include: 1) A coastal forest zone near the coast with higher rainfall. 2) Inland from the forest is a broad savanna zone divided into Guinea, Sudan, and Sahel subzones with decreasing tree cover and rainfall further north. 3) The …
The West African Vegetation Database has been developed in the framework of the projects "Sustainable Use of Natural Vegetation in West Africa" (SUN, …
Semantic Scholar extracted view of "MODIS NDVI trends and fractional land cover change for improved assessments of vegetation degradation in Burkina Faso, West Africa" by B. J. Zoungrana et al.
Abundant archaeological evidence of the occurrence of the endocarp of the oil palm,Elaeis guineensis, in the rain forest and woodland savanna zones of west and central Africa from about 5000 B.P. has shown the tree to be an important element in the subsistence economy of the region; its pollen also has been recorded in most of the regional terrestrial …
This interactive photographic guide shall help you to identify higher plants from West African ecosystems. It contains images of ferns and seed plants taken in the field and a search function on character data.
I CONCLUSION The monitoring of Normalized Difference Vegetation Index and Surface Temperature in the "Sudanian" and "Guinean" zones in West Africa leads to some interesting conclusions re- garding the interpretation of NOAA data for vegetation studies.
A summary is not available for this content so a preview has been provided. Please use the Get access link above for information on how to access this content. Flowering Plants in West Africa - June 1988
Africa - Mangrove Ecosystems, Ecology, Biodiversity: Mangroves include a variety of species of broad-leaved, shrubby trees (10–40 feet high) that fringe muddy creeks and tidal estuaries. They require warm saline water—hence their distribution along tropical coastlines. Often they form nearly impenetrable stands, for which the easiest access is …
Vegetation changes in Sahelian West Africa have been increasingly investigated since 1970 due to the catastrophic droughts in the early 1970s and 1980s and the following decades with below average precipitation. In most cases this was done by remote sensing and vegetation studies. In recent years, local knowledge of farmers and …
This is a database for vegetation data from West Africa, i.e. phytosociological and dendrometric relevés as well as floristic inventories.
Non-cereal plant foods in the Western Sahel of Africa contribute significantly to the diets of local residents, especially during periods of grain shortages. In this paper, we analyze four such plant foods including diyan kwakwa (nut of coconut palm, Cocos nucifera L.), muricin giginya (young shoot …
Climbing plants, including lianas, represent a fascinating component of the ecology of tropical forests. This book focuses on the climbing plants of West African forests. Based on original ...
Reduction of natural vegetation cover in the savannah of West Africa constitutes a pressing environmental concern that may lead to soil degradation. With the aim to assess the degradation of natural vegetation in the savannah of Burkina Faso, this study combined NDVI trends and fractional Land Use/Cover Change (LULCC).
This interactive photographic guide shall help you to identify higher plants from West African ecosystems. It contains images of ferns and seed plants taken in the field. You can browse through a taxonomic hierarchy and / or search according to selected characters you observe on your plant.
Here, we use a dynamic vegetation model, forced with AOGCM output, to examine the impact of climate change on vegetation in Central and West Africa. We run our dynamic vegetation model with the results of two different AOGCMs and two different scenarios giving contrasting climate results over Central and West Africa.
We investigated the SSB density in three microhabitats (under canopy, eroded soil and bare soil) in five vegetation types (abandoned farm, dense woodland, gallery forest, grassland and open woodland) at varying soil depths (0–5, 5–10 and 10–15 cm) in a savanna-woodland in Burkina Faso, West Africa.
The essential characteristics of the vegetation dynamics of tropical Africa remain only partially known. This study assesses the succession of vegetation-types over Central Africa during the last two glacial/interglacial cycles.
Africa - Mediterranean Vegetation: This zone is determined chiefly by its climate, which is characterized by very dry summers and mild, rainy winters, but it has long been much differentiated by its inhabitants. Large tracts have been degraded into maquis (macchie), garigue, or dry semidesert (steppe) vegetation. Maquis consists of dense …
The natural vegetation zones in West Africa (Gulf of Guinea to the Mediterranean) are described as they were before man, but under …
In 1975, natural habitats of the Sahelian and Sudanian Regions such as steppe, sahelian short grass savanna, and sudanian savanna were still the dominant land cover classes across West Africa, representing 18.5, 15, and 32.2 percent of the mapped area, respectively. From north to south, vegetation of the semiarid regions gradually …
This study investigates the impact of climate-vegetation interaction on future climate changes over West Africa using a regional climate model with synchronous coupling between climate and natural vegetation, the RegCM4.3.4-CLM-CN-DV. Based on the lateral boundary conditions supplied by MIROC-ESM and CESM under the …
