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Late Quaternary paleoenvironmental changes in East Africa: a
late Quaternary based on evidence from pollen, diatoms, microscopic charcoal, ... This was followed by a change to cold dry conditions ... 21,000 and 12,500 14C yr BP East Africa's environment .... about 20–30° north and south of the equator ... tropical convergence zone (ITCZ), dashed lines, the Congo Air Boundary (CAB).
[ kiage.pdf - Read/Download File

Late quaternary paleoenvironments of the Sahara region
LATE QUATERNARY PALAEOENVI RONMENTS OF THE SAHARA .... from 60 O00 to 14 O00 BP replaced by dry open steppe in which Kochia ... ranging from tropical in the south to mediterranean temperate in the north. ... West African coastal waters between the latitudes of 22 and 15" N ...... Climate from 8000 to O BC.
[ 29101.pdf - Read/Download File

Late Quaternary Environmental Changes and Human Interference in
Feb 3, 2012 ... Humans have been altering the environment since ... in the semi-arid tropical and subtropical zones of Africa, soil-erosion processes are .... In southern Africa, the wet to dry conditions are related to tropical .... the area of Africa north of the equator is potentially endangered by soil ...... Areola, O., 1999. Soils.
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Late Quaternary environmental change in central southern Africa
Until the early 1990s, chronologies of late Quaternary environmental and climatic changes developed ... The northern Kalahari (north of latitude 191S) has, by.
[ QSR2002.pdf - Read/Download File

Print awra_iitf_1998_scatena001 (6).tif (6 pages) - US Forest Service
ago Puerto Rico had coastal, brackish water, upland tropical to subtropical , and an arboreal ... dry pattern has been reported for other parts of the tropics and may reflect ... Dominican Republic Late Schubert & Late Pleistocene snowline at ... related to North African droughts and anthropogenic inputs from the Northern.
[ awra_iitf_1998_scatena001 (6).pdf - Read/Download File

A Review on Late Quaternary Environmental Change in the Namibia
Apr 30, 2016 ... Keywords: Late Quaternary; Climate change; SH insolation; Oceanic circulation ... Quaternary. One of the reasons for the Quaternary environment research is that it is ... precipitation from low-latitude tropical climate systems in the north ..... dry conditions in the South Africa, including the Namibia. However ...
[ a-review-on-late-quaternary-environmental-change-in-the-namibiasouthwestern-africa-2157-7617-1000348.pdf - Read/Download File

14.8 Marine Sediment Records of African Climate Change - Lamont
Summary of North African Climate Evolution Since the Last Glacial Maximum. 105. ... accumulating in offshore basins and marginal environments off ... matic changes in continental climate of the late Pleistocene. ... volume or dry), ' intermediate' (lake is within 15–70% of its ..... In the tropics and subtropics, δD.
[ deMenocal.2013.pdf - Read/Download File

Late quaternary climatic changes in western tropical africa deduced
climatic fluctuations during the Late Quaternary. œ. The dilution ... to 13 000 (+ 600) years BP while the tirne intervals in between were as dry as today. ... benthic environment which cannot easily be compared with the ... large parts of the tropical and subtropical oceans have .... and North-( eiitral lJnited States by Lemke rr a/.
[ publication-5227.pdf - Read/Download File

Hydrological changes in the African tropics since the Last Glacial
Paleohydrological data from the African tropics and subtropics, including lake, ... to show how environments and climates from both hemispheres are ... In particular, major dry spells occurred around 8.4}8 ka and ... during the Late Quaternary represent a impressive mani- ... with El Nin o-Southern Oscillation ( ENSO) years.
[ Gasse_2000_Quaternary_Sciences_Rev.pdf - Read/Download File

Dynamics of Green Sahara Periods and Their Role in - Plos
because most East African hominin sites back to the late Miocene have been ... Present-day vegetation in tropical North Africa is influenced by ... and dry desert lies the savannah, which includes three main belts ...... (2004) A reconstruction of Quaternary pluvial environments and human ... In: Bar-Yosef O, Kra R, eds.
[ 2013-Larrasoana-PLOSONE.pdf - Read/Download File

East African climate pulses and early human evolution - ScienceDirect
Oct 1, 2014 ... Open Access funded by Natural Environment Research Council: Under a ... with mixed tropical forest, to a varied and heterogeneous environment, with ..... uplift and rifting has caused East Africa to dry, we do not know precisely when, ..... Studies of late Quaternary palaeovegetation records indicate that ...
[ 1-s2.0-S0277379114002418-main.pdf?_tid=68264ffa-1e96-11e4-896f-00000aab0f02&acdnat=1407459387_5ad4a75cafd1f5e1d961410c23800ad3 - Read/Download File

Holocene vegetation change and the mammal faunas of South - DPI
Museu de Zoologia, Universidade de Sa˜o ... vegetation physiognomy would have occurred under the late Pleistocene last ... formerly steppic or desertic areas in subtropical Africa, north and south of the .... Throughout the Tertiary and Quaternary, South America .... of the Andes, dry and very dry climates prevail in tropical.
[ 5.mariodevivo.pdf - Read/Download File

MidÔ•'Holocene landÔ•'surface conditions in northern Africa and the
6000 years B.P. on a 1 o x 1 o grid across northern Africa and the Arabian Peninsula has ... and biomes of Africa during the Late Quaternary: Com- parison with ... Holocene extension of subtropical wetland vegetation has ... Sahara/ Sahel boundary was at least as far north as 23°N in ...... conjunction with tropical dry forest.
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5 Late Cretaceous and Tertiary vegetation history of Africa - Springer
plate tectonics, which clarifies certain aspects of African environments since the ... from data in North Africa, and also from fossil sites on land areas which were ...... wet tropics, dry-adapted (or preadapted) taxa could then spread as regional ... southern Africa in the late Quaternary have been well discussed by Van Zinderen.
[ 978-94-009-9951-0_5.pdf - Read/Download File

History of climate and forests in tropical Africa during the last 8
Oct 16, 1989 ... History of climate and forests in tropical Africa during the last 8 million ... The last glacial period as a whole (12000–70000 B.P.) was dry in tropical Africa and so ... 'Late Quaternary Lake-Level Fluctuations and Environments of the .... over the Eastern Subtropical Atlantic and North-West Africa', Nature, Lond.
[ h54288875n78352w.pdf - Read/Download File

The time-transgressive termination of the African Humid Period
Oct 10, 2013 ... occupying a meteorite impact crater in the tropical forest zone of ... influenced by hot, dry northeasterly monsoon winds, which inhibit .... To better understand spatiotemporal variations in North African .... Late Quaternary sedimentological and climate changes at .... environment and Holocene evolution.
[ shanahan12nat_si_221104.pdf - Read/Download File
periods of dry conditions in northwest Africa during the Holocene. The terrigenous record from the subtropical North Atlantic reflects generally humid ... mid- and late Holocene. ... hydrological cycle, particularly in the African tropics and .... the hinterland environment. ..... climate and biomes of Africa during the late quaternary:.
[ Holz_et_al_2007.pdf - Read/Download File

Determining the response of African biota to climate change: using
5School of Geography and the Environment, University of Oxford, South ... casted climatic changes on the African tropical and subtropical biota which .... North and south of this region, climate is dominated by the ... The Sahara is expected to stay dry or become drier ...... Y, Verschuren D. 2011 Late quaternary behavior of.
[ 20120491.full.pdf - Read/Download File

18 Orbital controls on seasonality
Seasonality in tropical and subtropical Africa (and globally in general) ... (obliqu ity, eccentricity of orbit, rela tive position o f the solstices and equin ox es aro und the ..... north. Africa in bo real. (no rthern hemisphere) sum mer and a dry monsoo nal ..... Earth's precession cycle and Quaternary climatic change in tropical.
[ Seasonality05.pdf - Read/Download File

Full Text (PDF)
Feb 13, 2012 ... southern extratropics (79%), indicating that the climate records have more in ..... dry stadial from approximately 17.5 to 14.7 ka (i.e., during the Old- est Dryas) when ... North Africa during the Oldest and Younger Dryas (114, 116) ex- ..... climatic change in eastern North America during the Late Quaternary.
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