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47 - Transpiration and microclimate of a tropical montane rain forest, southern Ecuador

from Part V - Cloud forest water use, photosynthesis, and effects of forest conversion

Published online by Cambridge University Press:  03 May 2011

By
T. Motzer ,
N. Munz ,
D. Anhuf  and
M. Küppers
Edited by
L. A. Bruijnzeel ,
F. N. Scatena  and
L. S. Hamilton
T. Motzer
Affiliation:
University of Mannheim, Germany
N. Munz
Affiliation:
University of Mannheim, Germany
D. Anhuf
Affiliation:
University of Passau, Germany
M. Küppers
Affiliation:
University of Hohenheim, Germany
L. A. Bruijnzeel
Affiliation:
Vrije Universiteit, Amsterdam
F. N. Scatena
Affiliation:
University of Pennsylvania
L. S. Hamilton
Affiliation:
Cornell University, New York
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Summary

ABSTRACT

Climatic measurements were made within and above a tropical lower montane (cloud) forest at 1975 m.a.s.l. in the southern Ecuadorian Andes to assess micro-meteorological conditions and calculate overall forest transpiration (using the Penman–Monteith model). Transpiration by individual trees was determined by means of sapflow measurements (Granier-type gages), supplemented by porometric measurements of leaf gas exchange. The light environment of the forest was characterized by high spatio-temporal variability. Modeled forest-floor photosynthetic photon flux density (PPFD) varied on average between 5.5% and 10.5% of incident radiation. Thermo-hygric gradients within the forest were weak, and the understory stratum was aerodynamically well coupled to the atmosphere above the forest, suggesting efficient turbulent mixing of the forest air. Daily sapflow totals ranged from 2–165 l day−1 and increased dramatically with tree height, trunk diameter, and crown dominance. Stand-scaled sapflow Ec was modeled based on stand structural parameters in a two-layer approach. The contribution of sub-canopy and understorey individuals to total stand transpiration was only about 20%, illustrating the dominance of upper canopy trees in the process. Penman–Monteith-based estimates of forest transpiration Ea showed a high energy efficiency (average Ea ~ 70% of net radiation), but due to low solar inputs, Ea remained low at 560 mm year−1 (representing 26.4% of the annual precipitation of 2120 mm during the measurement period). Stand-scaled sapflow Ec accounted for 85% to more than 90% of daily Ea and amounted to 1.8 mm day−1 on average (range: 0.7–2.8 mm day−1) during the drier season.

Type
Chapter
Information
Tropical Montane Cloud Forests
Science for Conservation and Management
 , pp. 447 - 455
Publisher: Cambridge University Press
Print publication year: 2011

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References

Anhuf, D., and Rollenbeck, R. (2001). Canopy structure of the Rio Surumoni rain forest (Venezuela) and its influence on microclimate. Ecotropica 7: 21–32.Google Scholar
Anhuf, D., Motzer, T., Rollenbeck, R., Schröder, B., and Szarzynski, J. (1999). Water budget of the Surumoni crane site (Venezuela). Selbyana 20: 179–185.Google Scholar
Beiderwieden, E., Wolff, V., Hsia, Y. J., and Klemm, O. (2008). It goes both ways: measurements of simultaneous evapotranspiration and fog droplet deposition at a montane cloud forest. Hydrological Processes 22: 4181–4189.CrossRefGoogle Scholar
Bendix, J., Rollenbeck, R., Richter, M., Fabian, P., and Emck, P. (2008). Climate. In Gradients in a Tropical Mountain Ecosystem of Ecuador, eds. Beck, E., Bendix, J., Kottke, I., Makeschin, F. and Mosandl, R., pp. 63–74. Berlin: Springer-Verlag.CrossRefGoogle Scholar
Bruijnzeel, L. A. (2001). Hydrology of tropical montane cloud forests: a reassessment. Land Use and Water Resources Research 1: 1–18.Google Scholar
Bruijnzeel, L. A. (2005). Tropical montane cloud forests: a unique ecosystem. In Forests, Water and People in the Humid Tropics, eds. Bonell, M. and Bruijnzeel, L. A., pp. 463–482. Cambridge, UK: Cambridge University Press.Google Scholar
Bruijnzeel, L. A., and Hamilton, L. S. (2000). Decision Time for Cloud Forests, IHP Humid Tropics Programme Series No. 13. Paris: UNESCO, Amsterdam: IUCN-NL, and Gland, Switzerland: WWF.Google Scholar
Bruijnzeel, L. A., and Proctor, J. (1995). Hydrology and biogeochemistry of tropical montane cloud forests: what do we really know? In Tropical Montane Cloud Forests, eds. Hamilton, L. S., Juvik, J. O., and Scatena, F. N., pp. 38–78. New York: Springer-Verlag.CrossRefGoogle Scholar
Diawara, A., Lousteau, D., and Berbigier, P. (1991). Comparison of two methods for estimating the evaporation of a Pinus pinaster (Ait.) stand: sap flow and energy balance with sensible heat flux measurements by an eddy covariance method. Agricultural and Forest Meteorology 54: 49–66.CrossRefGoogle Scholar
Dolman, A. J., Gash, J. H. C., Roberts, J., and Shuttleworth, W. J. (1991). Stomatal and surface conductance of tropical rainforest. Agricultural and Forest Meteorology 54: 303–318.CrossRefGoogle Scholar
Edwards, K. A. (1979). The water balance of the Mbeya experimental catchments. East African Agricultural and Forestry Journal 43: 231–247.CrossRefGoogle Scholar
Fleischbein, K., Wilcke, W., Valarezo, C., Zech, W., and Knoblich, K. (2006). Water budgets of three small catchments under montane forest in Ecuador: experimental and modelling approach. Hydrological Processes 20: 2491–2507.CrossRefGoogle Scholar
García-Santos, G. (2007). An ecohydrological and soils study in a montane cloud forest in the National Park of Garajonay, La Gomera (Canary Islands, Spain). Ph.D. thesis, VU University Amsterdam, Amsterdam, the Netherlands. Also available at www.falw.vu.nl/nl/onderzoek/earth-sciences/geo-environmental-science-and-hydrology/hydrology-dissertations/index.asp.Google Scholar
Giambelluca, T. W., Martin, R. E., Asner, G. P., et al. (2009). Evapotranspiration and energy balance of native wet montane cloud forest in Hawai'i. Agricultural and Forest Meteorology 149: 230–243.CrossRefGoogle Scholar
Goldstein, G., Andrade, J. L., Meinzer, F. C., et al. (1998). Stem water storage and diurnal patterns of water use in tropical forest canopy trees. Plant, Cell and Environment 21: 397–406.CrossRefGoogle Scholar
Gomez-Cardenas, M. (2009). Transpiration by contrasting vegetation cover types in the montane cloud forest belt of eastern Mexico. Ph.D. thesis, Iowa State University, Ames, IA, USA.Google Scholar
Granier, A. (1985). Une nouvelle méthode pour la mesure du flux de sève brute dans le tronc des arbres. Annales des Sciences Forestières 42: 193–200.CrossRefGoogle Scholar
Granier, A., Biron, P., Bréda, N., Pontailler, J. Y., and Saugier, B. (1996a). Transpiration of trees and forest stands: short- and long-term monitoring using sapflow methods. Global Change Biology 2: 265–274.CrossRefGoogle Scholar
Granier, A., Huc, R., and Barigah, S. T. (1996b). Transpiration of natural rainforest and its dependence on climatic factors. Agricultural and Forest Meteorology 78: 19–29.CrossRefGoogle Scholar
Grubb, P. J. (1977). Control of forest growth and distribution on wet tropical mountains: with special reference to mineral nutrition. Annual Review of Ecology and Systematics 8: 83–107.CrossRefGoogle Scholar
Holwerda, F. (2005). Water and energy budgets of rain forests along an elevational gradient under maritime tropical conditions. Ph.D. thesis, VU University Amsterdam, Amsterdam, the Netherlands. Also available at www.falw.vu.nl/images_upload/B321FA03-1279-D040-8B25E94A8EBDB962.pdf.Google Scholar
Jarvis, P. G. (1976). The interpretation of the variation in leaf water potentials and stomatal conductance found in canopies in the field. Philosophical Transactions of the Royal Society of London Series B 273: 593–610.CrossRefGoogle Scholar
Jones, H. G. (1992). Plants and Microclimate. Cambridge, UK: Cambridge University Press.Google Scholar
Köstner, B. M. M., Biron, P., Siegwolf, R., and Granier, A. (1996). Estimates of water vapour flux and canopy conductance of Scots Pine at the tree level utilizing different xylem sapflow methods. Theoretical and Applied Climatology 53: 105–113.CrossRefGoogle Scholar
Köstner, B. M. M., Granier, A., and Čermák, J. (1998). Sapflow measurements in forest stands: methods and uncertainties. Annales des Sciences Forestières 55: 13–27.CrossRefGoogle Scholar
Küppers, M., Motzer, T., Schmitt, D., et al. (2008). Stand structure, transpiration responses in trees and vines, and stand transpiration of different forest types within the mountain rainforest. In Gradients in a Tropical Mountain ecosystem of Ecuador, eds. Beck, E., Bendix, J., Kottke, I., Makeschin, F., and Mosandl, R., pp. 243–258. Berlin: Springer-Verlag.CrossRefGoogle Scholar
Kürschner, H., and Parolly, G. (2004). Phytomass and water-storing capacity of epiphytic rain forest bryophyte communities in S. Ecuador. Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 125: 489–504.CrossRefGoogle Scholar
Lawton, R. O., Nair, U. S., Pielke, R. A., and Welch, R. M. (2001). Climatic impact of tropical lowland deforestation on nearby montane cloud forests. Science 294: 584–587.Google ScholarPubMed
McJannet, D. L., Fitch, P. G., Disher, M. G, and Wallace, J. (2007). Measurements of transpiration in four tropical rainforest types of north Queensland, Australia. Hydrological Processes 21: 3549–3564.CrossRefGoogle Scholar
Meinzer, F. C., Goldstein, G., Holbrook, N. M., Jackson, P., and Cavelier, J. (1993). Stomatal and environmental control of transpiration in a lowland tropical forest tree. Plant, Cell and Environment 16: 429–436.CrossRefGoogle Scholar
Molion, L. C. B. (1987). Micrometeorology of an amazonian rain forest. In The Geophysiology of Amazonia: Vegetation and Climate Interactions, ed. Dickinson, R. E., pp. 255–272. New York: John Wiley.Google Scholar
Monteith, J. L. (1965). Evaporation and environment. Symposium of the Society of Experimental Biology 19: 206–234.Google Scholar
Motzer, T. (2003). Bestandesklima, Energiehaushalt und Evapotranspiration eines neotropischen Bergregenwaldes. Forstmeteorologische und ökophysiologische Untersuchungen in den Anden Süd-Ecuadors. Mannheim, Germany: Department of Geography, University Mannheim.Google Scholar
Motzer, T. (2005). Micrometeorological aspects of a tropical mountain forest. Agricultural and Forest Meteorology 135: 230–240.CrossRefGoogle Scholar
Motzer, T., Munz, N., Küppers, M., Schmitt, D., and Anhuf, D. (2005). Stomatal conductance, transpiration and sap flow of tropical montane rain forest trees in the southern Ecuadorian Andes. Tree Physiology 25: 1283–1293.CrossRefGoogle ScholarPubMed
Nair, U. S., Lawton, R. O., Welch, R. M., and Pielke, R. A.. (2003). Impact of land use on tropical montane cloud forests: sensitivity of cumulus cloud field characteristics to lowland deforestation. Journal of Geophysical Research 108(D7): 4206–4218.CrossRefGoogle Scholar
Oke, T. R. (1987). Boundary Layer Climates, 2nd edn. London: Methuen.Google Scholar
Oren, R., Zimmermann, R., and Terborgh, J. (1996). Transpiration in upper Amazonia floodplain and upland forests in response to drought-breaking rains. Ecology 77: 968–973.CrossRefGoogle Scholar
Oren, R., Phillips, N., Katul, G., Ewers, B. E., and Pataki, D. E. (1998). Scaling xylem sap flux and soil water balance and calculating variance: a method for partitioning water flux in forests. Annales des Sciences Forestières 55: 191–216.CrossRefGoogle Scholar
Phillips, N., Ryan, M. G., Bond, B. J., et al. (2003). Reliance on stored water increases with tree size. Tree Physiology 23: 237–245.CrossRefGoogle ScholarPubMed
Pounds, J. A., Fogden, M. P. L., and Campbell, J. H. (1999). Biological response to climate change on a tropical mountain. Nature 398: 611–615.CrossRefGoogle Scholar
Pounds, J. A., Bustamante, M., Coloma, L. A., et al. (2006). Widespread amphibian extinctions from epidemic disease driven by global warming. Nature 439: 161–167.CrossRefGoogle ScholarPubMed
Ray, D. K., Nair, U. S., Lawton, R. O., Welch, R. M., and Sr, R. A. Pielke. (2006). Impact of land use on Costa Rican tropical montane cloud forests: sensitivity of orographic cloud formation to deforestation in the plains. Journal of Geophysical Research 111: D02108, doi:10.1029/2005JD006096.CrossRefGoogle Scholar
Richards, P. W. (1996). The Tropical Rainforest, 2nd edn. Cambridge, UK: Cambridge University Press.Google Scholar
Roberts, J., Cabral, O. M. R., Fisch, G., et al. (1993). Transpiration from an Amazonian rainforest calculated from stomatal conductance measurements. Agricultural and Forest Meteorology 65: 175–196.CrossRefGoogle Scholar
Roberts, J. M., Gash, J. H. C., Tani, M., and Bruijnzeel, L. A. (2005). Controls on evaporation in lowland tropical rainforest. In Forests, Water and People in the Humid Tropics, eds. Bonell, M., and Bruijnzeel, L. A. pp. 287–313. Cambridge, UK: Cambridge University Press.CrossRefGoogle Scholar
Santiago, L. S., Goldstein, G., Meinzer, F. C., Fownes, J. H., and Müller-Dombois, D. (2000). Transpiration and forest structure in relation to soil waterlogging in a Hawaiian montane cloud forest. Tree Physiology 20: 673–681.CrossRefGoogle Scholar
Schellekens, J., Bruijnzeel, L. A., Scatena, F. N., Bink, N. J., and Holwerda, F. (2000). Evaporation from a tropical rain forest, Luquillo Experimental Forest, eastern Puerto Rico. Water Resources Research 36: 2183–2196.CrossRefGoogle Scholar
Schulze, E. -D., Čermák, J., Matyssek, R., et al. (1985). Canopy transpiration and water fluxes in the xylem of the trunk of Larix and Picea trees: a comparison of xylem flow, porometer and cuvette measurements. Oecologia 66: 475–483.CrossRefGoogle Scholar
Shuttleworth, W. J., Gash, J. H. C., Lloyd, C. R., et al. (1984). Observations of radiation changes above and below the Amazonian forest. Quarterly Journal of the Royal Meteorological Society 110: 1163–1169.CrossRefGoogle Scholar
Stewart, J. B. (1988). Modelling surface conductance of pine forest. Agricultural and Forest Meteorology 43: 19–35.CrossRefGoogle Scholar
Szarzynski, J., and Anhuf, D. (2001). Micrometeorological conditions and canopy energy exchange of a neotropical rain forest (Surumoni–Crane Project, Venezuela). Plant Ecology 153: 231–239.CrossRefGoogle Scholar
Turnipseed, A. A., Anderson, D. E., Blanken, P. D., Baugh, W. M., and Monson, R. K. (2003). Airflows and turbulent flux measurements in mountainous terrain. I. Canopy and local effects. Agricultural and Forest Meteorology 119: 1–21.CrossRefGoogle Scholar
Molen, M. K., Dolman, A. J., Waterloo, M. J., and Bruijnzeel, L. A. (2006). Climate is affected more by maritime than by continental land use change: a multiple-scale analysis. Global and Planetary Change 54: 128–149.Google Scholar
Walter, H., and Breckle, S. W.. (1991). Ökologie der Erde: Ökologische Grundlagen in globaler Sicht, Vol. 1. Heidelberg, Germany: Spektrum Akademischer Verlag.Google Scholar
Ward, R. C. and Robinson, M. (2000) Principles of Hydrology, 4th edn. New York:McGraw-Hill.Google Scholar
Weaver, P. L. (1975). Transpiration rates in the elfin forest of the Luquillo Mountains of Puerto Rico. Caribbean Journal of Science 15: 21–30.Google Scholar
Whitehead, D., and Hinckley, T. M. (1991). Models of water flux through forest stands: critical leaf and stand parameters. Tree Physiology 9: 35–57.CrossRefGoogle ScholarPubMed
Wilcke, W., Yasin, S., Fleischbein, K., et al. (2008). Water relations. In Gradients in a Tropical Mountain Ecosystem of Ecuador, eds. Beck, E., Bendix, J., Kottke, I., Makeschin, F., and Mosandl, R., pp. 193–202. Berlin: Springer-Verlag.CrossRefGoogle Scholar
Wullschleger, S. D., Meinzer, F. C., and Vertessy, R. A. (1998). A review of whole-plant water use studies in trees. Tree Physiology 18: 499–512.CrossRefGoogle Scholar
Zotz, G., Tyree, M. T., Patiño, S., and Carlton, M. R. (1998). Hydraulic architecture and water use of selected species from a lower montane forest in Panama. Trees 12: 302–309.CrossRefGoogle Scholar

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