Book contents
- Frontmatter
- Contents
- List of contributors
- Foreword
- Preface
- Acknowledgements
- Part I General perspectives
- Part II Regional floristic and animal diversity
- Part III Hydrometeorology of tropical montane cloud forest
- Part IV Nutrient dynamics in tropical montane cloud forests
- Part V Cloud forest water use, photosynthesis, and effects of forest conversion
- 47 Transpiration and microclimate of a tropical montane rain forest, southern Ecuador
- 48 Physiological variation in Hawaiian Metrosideros polymorpha across a range of habitats: from dry forests to cloud forests
- 49 Environmental controls on photosynthetic rates of lower montane cloud forest vegetation in south-western Colombia
- 50 Comparative water budgets of a lower and an upper montane cloud forest in the Wet Tropics of northern Australia
- 51 Effects of forest disturbance and regeneration on net precipitation and soil water dynamics in tropical montane rain forest on Mount Kilimanjaro, Tanzania
- 52 Changes in soil physical properties after conversion of tropical montane cloud forest to pasture in northern Costa Rica
- 53 Hydrology and land-cover change in tropical montane environments: the impact of pattern on process
- Part VI Effects of climate variability and climate change
- Part VII Cloud forest conservation, restoration, and management issues
- References
51 - Effects of forest disturbance and regeneration on net precipitation and soil water dynamics in tropical montane rain forest on Mount Kilimanjaro, Tanzania
from Part V - Cloud forest water use, photosynthesis, and effects of forest conversion
Published online by Cambridge University Press: 03 May 2011
Book contents
- Frontmatter
- Contents
- List of contributors
- Foreword
- Preface
- Acknowledgements
- Part I General perspectives
- Part II Regional floristic and animal diversity
- Part III Hydrometeorology of tropical montane cloud forest
- Part IV Nutrient dynamics in tropical montane cloud forests
- Part V Cloud forest water use, photosynthesis, and effects of forest conversion
- 47 Transpiration and microclimate of a tropical montane rain forest, southern Ecuador
- 48 Physiological variation in Hawaiian Metrosideros polymorpha across a range of habitats: from dry forests to cloud forests
- 49 Environmental controls on photosynthetic rates of lower montane cloud forest vegetation in south-western Colombia
- 50 Comparative water budgets of a lower and an upper montane cloud forest in the Wet Tropics of northern Australia
- 51 Effects of forest disturbance and regeneration on net precipitation and soil water dynamics in tropical montane rain forest on Mount Kilimanjaro, Tanzania
- 52 Changes in soil physical properties after conversion of tropical montane cloud forest to pasture in northern Costa Rica
- 53 Hydrology and land-cover change in tropical montane environments: the impact of pattern on process
- Part VI Effects of climate variability and climate change
- Part VII Cloud forest conservation, restoration, and management issues
- References
Summary
ABSTRACT
The montane rain forest belt on Mt. Kilimanjaro forms an important water source for northern Tanzania that is threatened by both logging and fire. The aim of this study was to investigate consequences of forest fragmentation on various aspects of the water cycle. Soil properties, rainfall, throughfall, and soil water suction were analyzed for mature forest, secondary forest patches, and large clearings. A total of 10 plots located on the south-western slopes of the mountain between 2100 and 2300 m.a.s.l. were monitored from May 2000 until June 2002. Annual rainfall amounts ranged from 2000–2600 mm and showed high spatial and inter-annual variability. Rainfall interception ranged from 3% to 9% of incident rainfall in clearings to a maximum of 32% in forests. In general, soils under mature forest were wettest and showed only minor moisture fluctuations through the year. Soils of secondary forest sites were driest and soil water suction exhibited the largest fluctuations. The difference between the two forest types may reflect a combination of differences in interception, evaporation from the forest floor, and transpiration, because ventilation and radiation penetration can be expected to be enhanced in fragmented secondary forest. In clearings the higher throughfall and presumably lower transpiration rates led to moister conditions compared to adjacent secondary forest sites. Top-soil sand contents of the Andisols differed between sites, with disturbed sites having higher sand contents and consequently lower water contents at similar soil water suctions than did mature forest sites. […]
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- Tropical Montane Cloud ForestsScience for Conservation and Management, pp. 491 - 501Publisher: Cambridge University PressPrint publication year: 2011
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