2 edition of Survey of anthropogenic vegetation changes in west Africa during the last century found in the catalog.
Survey of anthropogenic vegetation changes in west Africa during the last century
Written in English
Taken from Climate change, vol.7, 1985, pp.285-325.
|Series||Climate change -- v.7|
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 . Anthropogenic Vegetation the aggregate of phy-tocoenoses created by man or altered by his activity. Human influence on vegetation may be direct (for example, in mowing hay, grazing cattle, or cutting forests) or indirect (for example, in fertilizing meadows, draining swamps, or polluting the water and air). Other indirect influences are seen in flooding.
Analysis - Over the last decade many countries in the Sahel region - the semi-arid southern edge of the Sahara that stretches from Senegal to Ethiopia - have been embroiled in conflict. Nights can be cool and frosty, even during the summer. The coldest regions of Africa lie in the eastern highlands and southern Africa. Most of Africa is divided into wet and dry seasons. Near the equator there are two very wet seasons, as the sun passes overhead in spring and fall. During this time heavy rain falls every day in the afternoon.
The classification of natural and anthropogenic vegetation in Madagascar. Pp. in: S. M. Goodman and B. D. Patterson (eds.), Natural change and human impact in Madagascar. Before the arrival of man, the original woody vegetation types in the drier west (forest, woodland, bushland, etc.) were in a fragile equilibrium and could quickly. During the last century, the Earth's surface temperature increased by °C, reaching the highest levels in the last millennium rapid temperature change is attributed to a shift of less Cited by:
The Oxford encyclopedia of American literature
Treasure Hunters Club
Books and writers
Premises of Energy Forestry in Sweden.
Million-dollar markets for American leather ...
university and the press in fifteenth-century Bologna.
Take a stitch
Literacy, values and non-literary texts
Glaciers of North America
The decline and fall of the Roman Empire.
Action on Donovan
Abstract. The extent of albedo change resulting from anthropogenic modification of the vegetation cover over the last century has been investigated in West Africa. The climatic implications of these changes are briefly discussed.
West Africa spans a suite of vegetation zones ranging latitudinally northward from tropical rainforest to desert scrub, Cited by: A survey of anthropogenic vegetation changes in West Africa during the last century.
climatic implications Gornitz, V. Abstract. Not Available. Publication: Climatic Change. Pub Date: September DOI: /BF Bibcode: ClChG full text sources.
Publisher Cited by: Gorniz Gorniz, V., A survey of anthropogenic vegetation changes in West Africa during the last century — Climatic implications. Gornitz, V. A survey of anthropogenic vegetation changes in West Africa during the last century—climatic implications.
Clim. Change 7, – (). Article; Google ScholarCited by: A survey of anthropogenic vegetation changes in West Africa during the last century. climatic implications.
Climatic Change, Vol. 7, Issue. 3, p. Report on the Land Use Survey of the Oyo-Shaki Area, W. Nigeria. A survey of anthropogenic vegetation changes in West Africa during the last century. climatic implications. Climatic Cited by: Publications. Allison, M., V., A survey of anthropogenic vegetation changes in West Africa during the last century — Climatic implications.
Climatic Change, 7,doi and D. Peteet, Terrestrial conditions at the last glacial maximum and CLIMAP sea-surface temperature estimates: Are they consistent. Quat. This study assesses the succession of vegetation-types over Central Africa during the last two glacial/interglacial cycles.
Analysis of core K which contains pollen from the Zaire River watershed (latitudes 9°N–13°S), allows the investigation of long-term patterns of plant ecosystem development and their climatic by: west Africa expanded during an aridification period starting at around Ma.
Furthermore an extreme fire regime from until Ma favoured the C4 grasses, which nowadays dominate tropical grasslands. As aridification continued shrubland and desert vegetation expanded and the grasslands became sparser during the Pliocene.
Few changes in temperature have been demonstrated. These have occurred on a much smaller scale and are of considerably lower magnitude than those over the continents. The rainfall conditions over Africa during the last 2 to 3 decades are not unprecedented.
A similar dry episode prevailed during most of the first half of the 19th by: Start studying Global Environment Second Exam. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Changing vegetation patterns as you travel from West (California) to East (New Jersey) across the United States.
The fertility rate in Africa in the middle of the 20th century, the present day, and the. A survey of anthropogenic vegetation changes in West Africa during the last century - climatic implications. Clim. Change, 7: Gros, C. Mission forestière a la Côte d'Ivoire ().
Bulletin de la Société de Géographie commerciale de Paris, p. Guillaumet, J. & Adjanohoun, E La végétation de la Côte d'Ivoire. People group in Nigeria BC - AD. Earliest known culture in West Africa. First to smelt iron. Also traded. A survey of anthropogenic vegetation changes in West Africa during the last century - climatic implications’.
African Traditional Religions and the Promotion of Community-Living in Africa’, ().Author: Paul Sarfo-Mensah and William Oduro.
The West African section of the Sahel zone located at the southernmost edge of the Sahara, which extends from the Atlantic to the Red Sea, has been the source of reason for a wide variety of prognoses over the recent years.
Extreme periods of drought during the s and s were considered as indices of growing desert regions across the globe. According to earlier studies, s is the driest decade of the century in the West African region 10] [ -. However, a rainfall recovery in the s was reported in many regions 36]-[.
This recovery was limited in the decade s over some regions, such as southern Guinea and Cote d’Ivoire.
However, the degree to which prehistoric societies influenced vegetation cover in the tropical forests of West and Central Africa remains largely unknown and hotly debated among scholars from a.
forest (an area almost equivalent in size to South Africa) have been lost sinceaccording to FAO (). Numerous studies used global remote sensing data to highlight the fact that during the last decade, forests in the et al., ).
Recent estimates indicate a decline of m hectare of. Environmental and anthropogenic determinants of vegetation distribution across Africa.
Aim To assess the influence of natural environmental factors and historic and current anthropogenic processes as determinants of vegetation distributions at a continental scale.
In the 20th century, a shift in forest species was also observed in the West African Sahel (Gonzales, ). Here, we use a dynamic vegetation model, forced with AOGCM output, to examine the impact of climate change on vegetation in Central and West by: Little evidence of southern African climatic change is available for the Holocene.
Deacon et al. () suggest that in southern Africa climatic shifts during the l years were not as marked as those of the late Pleistocene, but the warmest temperatures occurred be tween about and yr BP when it was generally. This research project documents vegetation change in the arid lands of the southwestern United States.
The project compiles data on past and present plant distributions. These plant distributions are combined with data on past, present, and future climates to predict future plant distributions. The project requires four major research efforts: Macrobotanical digital library, Digitized range.
Gornitz, V., & NASA. (). A survey of anthropogenic vegetation change in West Africa during the last century: Climatic implications.
Climatic Change, 7, – Google ScholarAuthor: William M. Adams.West African countries are portrayed as having undergone recent and rapid forest loss.1 In an influential survey of anthropogenic vegetation change Gornitz/NASA () suggest that Liberia has lost 69% ( million ha) of its forest cover; Cote.