Effect of Mau Forest Clear Cut on Temperature Distribution and Hydrology of Catchment of Lakes Nakuru and Naivasha: Preliminary Study

Hesslerová, Petra; Pokorný, Jan

doi:10.1007/978-90-481-9585-5_19

Cited by 11 publications

(13 citation statements)

References 14 publications

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“…Researchers from the Egerton University have confirmed extensive changes to local climate and hydrology in the last 10 years and attribute this to deforestation of the Mau Forest complex. These findings also confirm the drying up of the Great Lakes (Hesslerová and Pokorný, 2010). As seen from satellite images in 2009, Lake Elmentaita has almost disappeared.…”

Section: Discussionsupporting

confidence: 89%

Forest clearing, water loss, and land surface heating as development costs

Hesslerová

Pokorný²

2010

IJW

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This paper documents the effects of development in Kenya and its subsequent influence on surface temperatures. The assumption is that deforestation leads to a decrease in evapotranspiration, and causes an observed temperature increase. The study was realised in the Mau Forest of Central Kenya, where extensive deforestation over the past 20 years has caused changes in climate and hydrology. The analyses are based on processing of Landsat satellite images. Field observations during the 'dry' rainy season in October 2008, and testimonies of local people and scientists, confirm the decline of precipitation, low water level in lakes and discharge of rivers.

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Section: Discussionsupporting

confidence: 89%

Forest clearing, water loss, and land surface heating as development costs

Hesslerová

Pokorný²

2010

IJW

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“…In the Sahel inner Niger delta, Mali, vegetation influences climate through evapotranspiration of water and increases the amount of water stored (Mougin et al , 2009). The deforestation leads to lower water stored and drought manifestations in the Mau forest region, Africa (Hesslerová and Pokorný, 2010), and creates islands of instability in a generally stable climate of cloud forests in Amazonia (Wanga et al , 2009).…”

Section: Discussionmentioning

confidence: 99%

Comparison of long‐term monitoring of temperature and precipitation between wetland and other ecosystems

Kovářová

Pokorný²

2010

Ecohydrology

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. At Churáňov, a mountain forest station, this increase was from 14Ð7 to 15Ð8°C (1Ð1°C) and at Praha Ruzyně, a city station, the increase was from 20Ð0 to 20Ð7°C (0Ð7°C) during the same time. Mean number of precipitation days changed at Wet Meadows from 94Ð5 to 80Ð7 days per vegetation season, at Churáňov from 101Ð2 to 105Ð0 days per vegetation season and at Praha Ruzyně from 83Ð9 to 83Ð0 days per vegetation season during this time. We attribute the rise in temperature at Wet Meadows to a combined effect of climate change and a local change of the hydrological cycle. The disturbances in the short water cycle are attributed to the decrease in vegetation cover and the lack of water in the landscape. The consequent increase in the incoming direct solar radiation along with the rise in the heat coming into the area via precipitation as well as a decrease in and redistribution of precipitation events are considered major drivers of the meteorological changes that have resulted in the observed warming at Wet Meadows.

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“…Because of the sharp variations in altitude and geology, the Rift exhibits marked variations in climate, vegetation, and land use (Bergner et al, 2009;Hesslerová & Pokorný, 2010;Were, Dick & Singh, 2013). Land at high altitude on the rift flanks is characterized by a perennially cool and humid climate with annual rainfall of up to 3000 mm per year.…”

Section: Tectonic Geological Environmental and Archaeological Settingmentioning

confidence: 99%

“…Land at high altitude on the rift flanks is characterized by a perennially cool and humid climate with annual rainfall of up to 3000 mm per year. This climate supports forest cover and the development of thick soils, but much of the forest has been cleared for agriculture and settlement (Hesslerová & Pokorný, 2010), and a major part of Kenya's agricultural output occurs in these regions, particularly tea and coffee. Conversely, the rift floor is characterized by an arid climate with a short rainy season, poor soil development and an annual rainfall of about 500 mm, particularly in the southern part of the inner rift.…”

Section: Tectonic Geological Environmental and Archaeological Settingmentioning

confidence: 99%

“…Deep red soils occur on the basalts of Mount Kipipiri, and in the foothills of the Aberdare Range, along the Sattima escarpment, as well as on volcanic ash and pyroclastics of the Mau escarpment and the Eburru forest. Most of the places with deep soils were previously forested but are now associated with intensive agriculture (Hesslerová & Pokorný, 2010;Were, Dick & Singh, 2013). Deep red but strongly weathered and acidified soils dominate the normal faulting complex north and northeast of Kariandusi as well as the edges of the Sattima fault and Mount Kipipiri (Mireri, 2005;Muchena & Gachene, 1988).…”

Section: Edaphicsmentioning

confidence: 99%

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Edaphic and Topographic Constraints on Exploitation of the Central Kenya Rift by Large Mammals and Early Hominins

et al. 2016

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Our aim in this paper is to create a palaeoenvironmental and spatio-temporal framework for interpreting human land use and exploitation of large mammals in the Central Kenya Rift over the past 2 million years, with particular reference to the Nakuru-Elmenteita-Naivasha basin and its adjacent rift flanks on the Kinangop Plateau and Mau escarpment. We pay particular attention to the tectonic and volcanic history of the region, and to the system of lakes that have undergone periodic expansion and contraction during the Pleistocene in response to climatic and tectonic controls. We use this information to reconstruct topographic features as they would have existed at different periods of the past and their likely influence on patterns of large-mammal movements. In addition we present a systematic mapping of variations in the mineral nutrients of soils -soil edaphics -based on 150 analyses of trace elements in modern soil and vegetation samples. Soil edaphics play an important role in animal and human health today, with serious deficiencies in some areas, and would have exerted an important constraint on animal distributions and movements in the past. We show how soil-edaphic properties vary across the region and demonstrate a close relationship between them and the underlying geology and sediments, which allows us to project patterns back into the past and extrapolate them over larger areas. Using this combination of variables, we construct maps that help to place archaeological sites into their wider regional setting. We focus in particular on the Acheulean site of Kariandusi and show that it occupied a unique window of opportunity in place and time for trapping mammals constrained to move through a narrowly defined topographic bottleneck between edaphically-rich areas. We infer that the site was used for a simple form of ambush hunting and briefly explore the implications for differential site use, formation, preservation and visibility.

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Effect of Mau Forest Clear Cut on Temperature Distribution and Hydrology of Catchment of Lakes Nakuru and Naivasha: Preliminary Study

Cited by 11 publications

References 14 publications

Forest clearing, water loss, and land surface heating as development costs

Forest clearing, water loss, and land surface heating as development costs

Comparison of long‐term monitoring of temperature and precipitation between wetland and other ecosystems

Edaphic and Topographic Constraints on Exploitation of the Central Kenya Rift by Large Mammals and Early Hominins

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