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. […]
- Type
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- Information
- Tropical Montane Cloud ForestsScience for Conservation and Management, pp. 491 - 501Publisher: Cambridge University PressPrint publication year: 2011
References
(1998). Importance of cloud water in Venezuelan Andean cloud forest water dynamics. In Proceedings of the 1st International Conference on Fog and Fog Collection, eds. and , pp. 25–28. Ottawa, Canada: IDRC.Google Scholar
(2003). Diversität von Geometriden (Lepidoptera) und Gefäßpflanzen entlang von Habitatgradienten am Südwest-Kilimanjaro. Ph.D. thesis, University of Bayreuth, Bayreuth, Germany.Google Scholar
(1992). Tanzania's vanishing rain forests: assessment of nature conservation values, biodiversity and importance for water catchment. Agriculture, Ecosystems and Environment 40: 313–334.CrossRefGoogle Scholar
(1989). Hydrological considerations for development in the Eastern Usambara Mountains. In Forest Conservation in the East Usambara Mountains, Tanzania, eds. and , pp. 117–140. Gland, Switzerland: IUCN.Google Scholar
(1989). Nutrient cycling in moist tropical forests: the hydrological framework. In Mineral Nutrients in Tropical Forest and Savanna Ecosystems, ed. , pp. 383–415. Oxford, UK: Blackwell Scientific.Google Scholar
(2004). Hydrological functions of tropical forests: not seeing the soil for the trees?Agriculture, Ecosystems and Environment 104: 185–228.CrossRefGoogle Scholar
(2005). Tropical montane cloud forest: a unique hydrological case. In Forests, Water and People in the Humid Tropics, eds. and , pp. 462–483. Cambridge, UK: Cambridge University Press.CrossRefGoogle Scholar
, and (1995). Hydrology and biogeochemistry of tropical montane cloud forests: what do we really know? In Tropical Montane Cloud Forests, eds. , , and , pp. 38–78. New York: Springer-Verlag.CrossRefGoogle Scholar
, , , and (1997). Water balance and nutrient inputs in bulk precipitation in tropical montane cloud forests in Panama. Journal of Hydrology 193: 83–96.CrossRefGoogle Scholar
, , , and (1998). Atmospheric deposition and net retention of ions by the canopy in a tropical montane forest, Monteverde, Costa Rica. Journal of Tropical Ecology 14: 27–45.CrossRefGoogle Scholar
, , , , and (2002). Topographic position affects the water regime in a semideciduous tropical forest in Panamá. Plant and Soil 238: 79–90.CrossRefGoogle Scholar
(1968). Y 742 Series, Sheet Nos. 42/3, /4, 56/1, /2, /4, 57/1. London: Directorate of Overseas Surveys.
, , , and (2008). General characteristics of temperature and humidity variability on Kilimanjaro, Tanzania. Arctic, Antarctic, and Alpine Research 40: 323–334.CrossRefGoogle Scholar
(1994). SHYPFIT User's Manual, Research Report No. 94.1. Bayreuth, Germany: Institute of Hydrology, University of Bayreuth.Google Scholar
(1979). The water balance of the Mbeya experimental catchments. East African Agricultural and Forestry Journal 1: 231–247.CrossRefGoogle Scholar
, and (1986). Particle-size analysis. In Methods of Soil Analysis, Part 1, Physical and Mineralogical Methods, ed. , pp. 383–411. Madison, WI: Soil Science Society of America.Google Scholar
(2002). Hydrology of altered tropical forest. Hydrological Processes 16: 1665–1669.CrossRefGoogle Scholar
, and (2003). The Bracken fern (Pteridium arachnoideum Kaulf.) dilemma in the Andes of Southern Ecuador. Ecotropica 9: 3–13.Google Scholar
(2002). Ecology of the pteridophytes on the southern slopes of Mt. Kilimanjaro. I. Altitudinal distribution. Plant Ecology 159: 211–239.CrossRefGoogle Scholar
(2005a). The banana forests of Kilimanjaro: biodiversity and conservation of the Chagga homegardens. Biodiversity and Conservation, doi: 10.1007/s10531–004–8230–8.CrossRef
(2005b). Climate change driven forest fires marginalize the impact of ice cap wasting on Kilimanjaro. Global Change Biology 11: 1013–1023.CrossRefGoogle Scholar
, , , and (2004). The importance of epiphytes epiphytes to total rainfall interception by a tropical montane rain forest in Costa Rica. Journal of Hydrology 292: 308–322.CrossRefGoogle Scholar
, , and (2006). Throughfall in a Puerto Rican lower montane rain forest: a comparison of sampling strategies. Journal of Hydrology 327: 592–602.CrossRefGoogle Scholar
(1985). Fog drip, water yield and timber harvesting in the Bull Run Municipal Watershed, Oregon. Water Resources Bulletin 21: 469–473.CrossRefGoogle Scholar
(1989). Effects of isolation on the water status of forest patches in the Brazilian Amazon. Journal of Tropical Ecology 5: 173–185.CrossRefGoogle Scholar
(1997). Wasser- und Nährstoffdynamik im Boden und Bestand beim Auffbau einer Holzplantage im östlichen Amazonasgebiet. Ph.D. thesis, Georg-August-University Göttingen, Göttingen, Germany.Google Scholar
, , , , and (2002). Aerial Survey of the Threats to Mt. Kilimanjaro Forests. Dar es Salaam, Tanzania: UNDP, UNOPS, UNF, UNEP, Kenya Wildlife Service, and University of Bayreuth.Google Scholar
, , and (1991). Changes in the boundary of the montane rainforest on Mt. Kilimanjaro between 1958–1987. In The Conservation of Mount Kilimanjaro, ed. , pp. 9–16. Gland, Switzerland: IUCN.Google Scholar
, , , et al. (1999). Annual course of matric potential in different used savanna oxisols in Brazil. Soil Science Society of America Journal 63: 1778–1785.CrossRefGoogle Scholar
, and (1979). Rainfall, interception and evaporation in the Mazumbai forest reserve, West Usambara Mts., Tanzania and their importance in the assessment of land potential. Geografiska Annaler 61: 157–178.CrossRefGoogle Scholar
, , , , and (2003). Gas diffusivity in undisturbed volcanic ash soils: test of soil-water-characteristic-based prediction models. Soil Science Society of America Journal 67: 41–51.CrossRefGoogle Scholar
(1991). The natural forest of Mount Kilimanjaro. In The Conservation of Mount Kilimanjaro, ed. , pp. 136–145. Gland, Switzerland: IUCN.Google Scholar
, , and (2009). Climate dynamics of the Kilimanjaro region. In Kilimanjaro Ecosystems under Global Change: Linking Biodiversity, Biotic Interactions and Biogeochemical Ecosystem Processes, ed. I. Steffan-Dewenter. Proposal for the establishment of a Research Unit submitted to the Deutsche Forschungsgemeinschaft.
(1974). Rainstorm distributions in Tanzania. Geografiska Annaler 56A: 241–250.CrossRefGoogle Scholar
(1985). The effect of disturbance on water and solute budgets of hillslope tropical rainforest in Northeastern Costa Rica. Ph.D. thesis, University of Georgia, Athens, GA, USA.Google Scholar
(1980). The epiphytic biomass and its effect on the water balance of two rain forest types in the Uluguru Mountains (Tanzania, East Africa). Acta Botanica Academiae Scientiarum Hungariae 26: 143–167.Google Scholar
(2003). Using plant functional types and soil temperatures for ecoclimatic interpretations in southern Ecuador. Erdkunde 57: 161–181.CrossRefGoogle Scholar
(2003). A hydrological study concerning the southern slopes of Mt. Kilimanjaro, Tanzania. Ph.D. thesis, Norwegian University of Science and Technology, Trondheim, Norway.Google Scholar
, and (2003). Rainfall distribution on the slopes of Mt. Kilimanjaro. Hydrological Sciences Journal 48: 65–77.CrossRefGoogle Scholar
, and (1991). The hydrology of Mount Kilimanjaro: an examination of dry season runoff and possible factors leading to its decrease. In The Conservation of Mount Kilimanjaro, ed. , pp. 53–70. Gland, Switzerland: IUCN.Google Scholar
(2004). Biogeochemical investigations in old growth and disturbed forest sites at Mount Kilimanjaro. Ph.D. thesis, University of Bayreuth, Bayreuth, Germany.Google Scholar
, , and (2005). The hydrological and soil impacts of forestation in the tropics. In Forests, Water and People in the Humid Tropics, eds. and , pp. 622–651. Cambridge, UK: Cambridge University Press.CrossRefGoogle Scholar
(2003). Keys to Soil Taxonomy. Washington, DC: Natural Resource Conservation Service of the U.S. Department of Agriculture.Google Scholar
(1987). Cloud Forests in the Humid Tropics: A Bibliographic Review. Turrialba, Costa Rica: Centro Agronomico Tropical de Investigación y Ensenanza, and Tokyo: The United Nations University.Google Scholar
, , , and (2009). Patterns in water and carbon flux controls along land use and climate gradients. In Kilimanjaro Ecosystems under Global Change: Linking Biodiversity, Biotic Interactions and Biogeochemical Ecosystem Processes, ed. I. Steffan-Dewenter. Proposal for the establishment of a Research Unit submitted to the Deutsche Forschungsgemeinschaft.
(1998). Measurement of atmospheric deposition under forest canopies: Some recommendations for equipment and sampling design. Environmental Monitoring and Assessment 52: 353–387.CrossRefGoogle Scholar
(1980). A closed-form equation for predicting the hydraulic conductivity of unsaturated soils. Soil Science Society of America Journal 44: 892–898.CrossRefGoogle Scholar
(1989). Allophane and imogolite. In Minerals in Soil Environments, ed. , pp. 603–638. Madison, WI: Soil Science Society of America.Google Scholar
(1981). The hydrological importance of a montane cloud forest area of Costa Rica. In Tropical Agricultural Hydrology, eds. and , pp. 59–73. New York: John Wiley.Google Scholar