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
- 20 Hydrometeorological patterns in relation to montane forest types along an elevational gradient in the Yungas of Bolivia
- 21 Structure and dynamics of tropical montane cloud forests under contrasting biophysical conditions in north-western Costa Rica
- 22 Quantitative measures of immersion in cloud and the biogeography of cloud forests
- 23 Understanding the role of fog in forest hydrology: stable isotopes as tools for determining input and partitioning of cloud water in montane forests
- 24 Using stable isotopes to identify orographic precipitation events at Monteverde, Costa Rica
- 25 Using “biosensors” to elucidate rates and mechanisms of cloud water interception by epiphytes, leaves, and branches in a sheltered Colombian cloud forest
- 26 Water dynamics of epiphytic vegetation in a lower montane cloud forest: fog interception, storage, and evaporation
- 27 Epiphyte biomass in Costa Rican old-growth and secondary montane rain forests and its hydrological significance
- 28 Comparison of passive fog gages for determining fog duration and fog interception by a Puerto Rican elfin cloud forest
- 29 Fog interception in a Puerto Rican elfin cloud forest: a wet-canopy water budget approach
- 30 Fog gage performance under conditions of fog and wind-driven rain
- 31 The wet-canopy water balance of a Costa Rican cloud forest during the dry season
- 32 Measured and modeled rainfall interception in a lower montane forest, Ecuador
- 33 Measuring cloud water interception in the Tambito forests of southern Colombia
- 34 Relationships between rainfall, fog, and throughfall at a hill evergreen forest site in northern Thailand
- 35 History of fog and cloud water interception research in Hawai'i
- 36 Interpreting canopy water balance and fog screen observations: separating cloud water from wind-blown rainfall at two contrasting forest sites in Hawai'i
- 37 Historical background of fog water collection studies in the Canary Islands
- 38 Effects of fog on climatic conditions at a sub-tropical montane cloud forest site in northern Tenerife (Canary Islands, Spain)
- Part IV Nutrient dynamics in tropical montane cloud forests
- Part V Cloud forest water use, photosynthesis, and effects of forest conversion
- Part VI Effects of climate variability and climate change
- Part VII Cloud forest conservation, restoration, and management issues
- References
23 - Understanding the role of fog in forest hydrology: stable isotopes as tools for determining input and partitioning of cloud water in montane forests
from Part III - Hydrometeorology of tropical montane cloud forest
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
- 20 Hydrometeorological patterns in relation to montane forest types along an elevational gradient in the Yungas of Bolivia
- 21 Structure and dynamics of tropical montane cloud forests under contrasting biophysical conditions in north-western Costa Rica
- 22 Quantitative measures of immersion in cloud and the biogeography of cloud forests
- 23 Understanding the role of fog in forest hydrology: stable isotopes as tools for determining input and partitioning of cloud water in montane forests
- 24 Using stable isotopes to identify orographic precipitation events at Monteverde, Costa Rica
- 25 Using “biosensors” to elucidate rates and mechanisms of cloud water interception by epiphytes, leaves, and branches in a sheltered Colombian cloud forest
- 26 Water dynamics of epiphytic vegetation in a lower montane cloud forest: fog interception, storage, and evaporation
- 27 Epiphyte biomass in Costa Rican old-growth and secondary montane rain forests and its hydrological significance
- 28 Comparison of passive fog gages for determining fog duration and fog interception by a Puerto Rican elfin cloud forest
- 29 Fog interception in a Puerto Rican elfin cloud forest: a wet-canopy water budget approach
- 30 Fog gage performance under conditions of fog and wind-driven rain
- 31 The wet-canopy water balance of a Costa Rican cloud forest during the dry season
- 32 Measured and modeled rainfall interception in a lower montane forest, Ecuador
- 33 Measuring cloud water interception in the Tambito forests of southern Colombia
- 34 Relationships between rainfall, fog, and throughfall at a hill evergreen forest site in northern Thailand
- 35 History of fog and cloud water interception research in Hawai'i
- 36 Interpreting canopy water balance and fog screen observations: separating cloud water from wind-blown rainfall at two contrasting forest sites in Hawai'i
- 37 Historical background of fog water collection studies in the Canary Islands
- 38 Effects of fog on climatic conditions at a sub-tropical montane cloud forest site in northern Tenerife (Canary Islands, Spain)
- Part IV Nutrient dynamics in tropical montane cloud forests
- Part V Cloud forest water use, photosynthesis, and effects of forest conversion
- Part VI Effects of climate variability and climate change
- Part VII Cloud forest conservation, restoration, and management issues
- References
Summary
ABSTRACT
Understanding the hydrology of tropical montane cloud forests (TMCF) has become essential as deforestation of mountain areas proceeds at an increased rate worldwide. Passive and active cloud water collectors, throughfall and stemflow collectors, visibility or droplet size measurements, and micrometeorological sensors are typically used to measure fog water inputs to ecosystems. In addition, stable isotopes may be used as a natural tracer for fog and rain. Previous studies have shown that the isotopic signature of fog tends to be more enriched in the heavier isotopes 2H and 18O than that of rain, due to differences in condensation temperature and history. Differences between fog and rain isotopes are largest for synoptic-scale rain storms vs. local fogs or orographic clouds. Isotopic differences have also been observed between locally generated rain and fog on mountains with orographic clouds, but only a few studies have been conducted. Quantifying fog deposition using isotope methods is more difficult in forests receiving mixed precipitation, due to limitations in the ability of sampling equipment to separate fog from rain.
This chapter describes the various types of fog most relevant to MCF and the importance of fog water deposition in the hydrological budget. A brief overview of isotope hydrology provides the background needed to understand isotope applications in cloud forests. A summary of previous work explains isotopic differences between rain and fog in different environments, and how monitoring the isotopic signature of surface water, soil water, and tree sap can yield estimates of the contribution of fog water to streamflow, recharge, and transpiration.
- Type
- Chapter
- Information
- Tropical Montane Cloud ForestsScience for Conservation and Management, pp. 228 - 241Publisher: Cambridge University PressPrint publication year: 2011
References
, , and (1983). Distribution of deuterium and oxygen-18 in dry soils. II. Experimental. Journal of Hydrology 64: 377–397.CrossRefGoogle Scholar
, , and (1989). Coastal fog and its relation to groundwater in the IV region of northern Chile. Chemical Geology (Isotope Geoscience Section) 79: 83–91.CrossRefGoogle Scholar
, and (1983). The distribution of oxygen-18 and deuterium in dry soils. I. Theory. Journal of Hydrology 60: 141–156.CrossRefGoogle Scholar
, and (1998). Isotopic exchange in soil water. In Isotope Tracers in Catchment Hydrology, eds. and , pp. 137–163. Amsterdam: Elsevier.CrossRefGoogle Scholar
, , , , and (2000). Influence of vegetation structure on isotope content of throughfall and soil water. Hydrological Processes 14: 1439–1448.3.0.CO;2-3>CrossRefGoogle Scholar
(2000). Forest hydrology. In The Forest Handbook, ed. , pp. 301–343. Oxford, UK: Blackwell Scientific.Google Scholar
(2001). Hydrology of tropical montane cloud forests: a reassessment. Land Use and Water Resources Research 1: 1–8.Google Scholar
, , and (2005). Fog as an input to the hydrological cycle. In Encyclopaedia of Hydrological Sciences, eds. and , pp. 559–582. Chichester, UK: John Wiley.Google Scholar
(2003). Fogwater flux measurements above different vegetation canopies. Ph.D. thesis, University of Bern, Bern, Switzerland.Google Scholar
, , and (2003). Vertical fogwater flux measurements above an elevated forest canopy at the Lägeren research site, Switzerland. Atmospheric Environment 37: 2979–2990.CrossRefGoogle Scholar
(1998). Fundamentals of small catchment hydrology. In Isotope Tracers in Catchment Hydrology, eds. and , pp. 1–49. Amsterdam: Elsevier.Google Scholar
, , , et al. (1987). Modern and fossil groundwater in an arid environment: a look at the hydrogeology of southern Oman. In Symposium on Isotope Techniques in Water Resources Development, pp. 167–187. Vienna: International Atomic Energy Agency.Google Scholar
, , , and (2005). Summer water use by California coastal prairie grasses: fog, drought, and community composition. Oecologia 145: 511–521.CrossRefGoogle ScholarPubMed
, , and (1986). Active Cloudwater Collector. US Patent No. 4 697 462.
, , , and (1987). Two new ground-level cloud water sampler designs which reduce rain contamination. Atmospheric Environment 21: 893–900.CrossRefGoogle Scholar
(1993). Water sources of plants as determined from xylem-water isotopic composition: perspectives on plant competition, distribution, and water relations. In Stable Isotopes and Plant Carbon–Water Relations, eds. , , and , pp. 465–496. San Diego, CA: Academic Press.CrossRefGoogle Scholar
(1998). Fog in the California redwood forest: ecosystem inputs and use by plants. Oecologia 117: 476–485.CrossRefGoogle ScholarPubMed
, and (1998). Plants, isotopes and water use: a catchment-scale perspective. In Isotope Tracers in Catchment Hydrology, eds. and , pp. 165–202. Amsterdam, Elsevier.CrossRefGoogle Scholar
, and (1998). Plant–fog interactions in California and Chile. In Proceedings of the 1st International Conference on Fog and Fog Collection, eds. and , pp. 225–228. Ottawa, Canada: IDRC.Google Scholar
(2007). The relevance of fog for the vegetation: is it the water or the nutrients that matter? In Proceedings of the 4th International Conference on Fog, Fog Collection and Dew, eds. and , pp. 359–362. Santiago de Chile: Catholic University.Google Scholar
, , and (1982). Stable isotopes in hailstones. I. The isotopic cloud model. Journal of the Atmospheric Sciences 39: 1323–1335.2.0.CO;2>CrossRefGoogle Scholar
, and (1998). Water sources used by Didymopanax pittieri at different life stages in a tropical cloud forest. Ecology 79: 1448–1452.CrossRefGoogle Scholar
, and (2007). Evaluating patterns of fog water deposition and isotopic composition on the California Channel Islands. Water Resources Research 43: W04420, doi:101029/2006WR005124.CrossRefGoogle Scholar
, , and (2009). Significance of summer fog and overcast for drought stress and ecological functioning of coastal California endemic plant species, Journal of Biogeography 36: 783–799.CrossRefGoogle Scholar
(2007). An ecohydrological and soils study in a subtropical montane cloud forest in the National Park of Garajonay, La Gomera, (Canary Island, spain). Ph.D. thesis, VU University Amsterdam, Amsterdam, The Netherlands. Available at www.falw.vu.nl/nl/onderzoek/earth-sciences/geo-environmental-science-and-hydrology/hydrology-dissertations/index.asp.Google Scholar
(2000). Atmospheric water balance: the isotopic perspective. Hydrological Processes 14: 1357–1369.3.0.CO;2-7>CrossRefGoogle Scholar
, and (1994). Modeling the isotopic composition of precipitation. Journal of Geophysical Research 99: 10 455–10 471.CrossRefGoogle Scholar
(2000). Glossary of Meteorology, 2nd edn. Boston, MA: American Meteorological Society. Also available at http://amsglossary.allenpress.com/glossary.Google Scholar
, , , et al. (2005). Tracing water paths through small catchments under a tropical montane rain forest in south Ecuador by an oxygen isotope approach. Journal of Hydrology 308: 67–80.CrossRefGoogle Scholar
, and (1962). Oxygen isotopic composition of fogs and rains from the North Atlantic. Experientia 18: 222–223.CrossRefGoogle Scholar
, , , et al. (2006). Estimating fog deposition at a Puerto Rican elfin cloud forest site: comparison of the water-budget and eddy covariance methods. Hydrological Processes 20: 2669–2692.CrossRefGoogle Scholar
, and (1993). Effects of surface area and volume on the rate of isotopic exchange between water and water vapor. Journal of Geophysical Research (Atmospheres) 98: 20 547–20 553.CrossRefGoogle Scholar
, and (2000). Isotopic assessment of the hydrological importance of fog deposition on tall snow tussock grass on southern New Zealand uplands. Austral Ecology 25: 402–408.CrossRefGoogle Scholar
, and (1988). Fog drip as a source of groundwater recharge in northern Kenya. Water Resources Research 24: 1406–1410.CrossRefGoogle Scholar
, and (1990). A stable isotope study of fog: the Point Reyes Peninsula, California, U.S.A. Chemical Geology (Isotope Geoscience Section) 80: 281–290.CrossRefGoogle Scholar
, and . (1995). The importance of fog drip water to vegetation: Point Reyes Peninsula, California. Journal of Hydrology 164: 269–285.CrossRefGoogle Scholar
, , and (1975). Isotopic study of hail. Journal of Geophysical Research 80: 5015–5030.CrossRefGoogle Scholar
(1992). Temporal, spatial and species effects on the oxygen and hydrogen isotopic compositions of throughfall. EOS, Transactions of the American Geophysical Union 73: 160.Google Scholar
, , , and (1999). Comparison of the stable-isotopic composition of soil water collected from suction lysimeters, wick samplers, and cores in a sandy unsaturated zone, Journal of Hydrology 224: 45–54.CrossRefGoogle Scholar
, , , and (2005). Fog drip and its relation to groundwater in the tropical seasonal rain forest of Xishuangbanna, Southwest China. Water Research 39: 787–794.CrossRefGoogle ScholarPubMed
, , , et al. (2007). Using stable isotopes to determine sources of fog drip in a tropical seasonal rain forest of Xishuangbanna, SW China. Agricultural and Forest Meteorology 143: 80–91.CrossRefGoogle Scholar
, and (1982). Determining the turnover time of groundwater systems with the aid of environmental tracers. I. Models and their applicability. Journal of Hydrology 57: 207–231.CrossRefGoogle Scholar
, , , , and (1996). Using stable isotopes to determine sources of evaporated water to the atmosphere in the Amazon basin. Journal of Hydrology 183: 191–204.CrossRefGoogle Scholar
, , , and (1990). Deuterium variations in storm rainfall: implications for stream hydrograph separation. Water Resources Research 26: 455–458.CrossRefGoogle Scholar
, , and (2002). Evaluation of mean residence time in subsurface waters using oxygen-18 fluctuations during drought conditions in the mid-Appalachians. Journal of Hydrology 261: 132–149.CrossRefGoogle Scholar
, , and (2007). Precipitation interception in Australian tropical rainforests. II. Altitudinal gradient of cloud interception, stemflow, throughfall and interception. Hydrological Processes 21: 1703–1718.CrossRefGoogle Scholar
, , , et al. (1999). Partitioning of soil water among canopy trees in a seasonally dry tropical forest. Oecologia 121: 293–301.CrossRefGoogle Scholar
, and (2001). Environmental Isotopes in the Hydrological Cycle: Principles and Applications, Vol. I, Introduction: Theory, Methods, Review. Paris: UNESCO, and Vienna: IAEA. Also available at www.iaea.org/programmes/ripc/ih/volumes/volume1.htm.Google Scholar
, and (1999). Estimation of wind-induced error of rainfall gauge measurements using a numerical simulation. Journal of Atmospheric and Oceanic Technology 16: 450–464.2.0.CO;2>CrossRefGoogle Scholar
, and (1990). A method to extract soil water for stable isotope analysis. Journal of Hydrology 115: 397–406.CrossRefGoogle Scholar
, , and (2006). Seasonal variation in the stable isotopic composition of precipitation in the tropical montane forests of Monteverde, Costa Rica. Water Resources Research 42, W11402, doi:10.1029/2005WR004535.CrossRefGoogle Scholar
, , and (1993). Isotopic patterns in modern global precipitation. In Climate Change in Continental Isotopic Records, eds. , , , and , pp. 1–36. Washington, DC: American Geophysical Union.Google Scholar
, , , and (1979). Recycling of water in the Amazon basin: an isotopic study. Water Resources Research 15: 1250–1258.CrossRefGoogle Scholar
(1986). Estimation of canopy reservoir capacity and oxygen-18 fractionation in throughfall in a pine forest. Nordic Hydrology 17: 251–260.CrossRefGoogle Scholar
, , , and (1995). An isotope hydrology study of the Kilauea Volcano area, Hawaii U.S. Geological Survey Water Resources Investigations Report No. 95–4213. Washington, DC: U.S. Government Printing Office.Google Scholar
, , and (2002). The influence of microclimates and fog on stable isotope signatures used in interpretation of regional hydrology: East Maui, Hawaii. Journal of Hydrology 264: 170–184.CrossRefGoogle Scholar
, , and (2006). Stable isotope measurements of rain, cloud water, and streams in the Luquillo mountains, Puerto Rico, Geological Society of America, Abstracts with Programs 38(7): 97.Google Scholar
, , , , and (2007). Cloud water in windward and leeward mountain forests: the stable isotope signature of orographic cloud water. Water Resources Research 43: W12411, doi:101029/2007WR006011.CrossRefGoogle Scholar
, and (1980). Correlation of 18O in precipitation with temperature and altitude. Nature 285: 314–317.CrossRefGoogle Scholar
, and (1979). The role of groundwater in storm runoff. Journal of Hydrology 43: 45–65.CrossRefGoogle Scholar
, , and (1976). A conceptual model of watershed response to rainfall, developed through the use of oxygen-18 as a natural tracer. Canadian Journal of Earth Sciences 13: 271–283.CrossRefGoogle Scholar
, , , and (2003). Preliminary measurements of oxygen-18 and hydrogen-2 in water samples collected from a cloud forest in Monteverde, Costa Rica. EOS, Transactions of the American Geophysical Union, Fall Meeting Supplement 84: Abstract B31E-0348.Google Scholar
, , , , and (2001). Stable isotopes in rainfall and fog in the Luquillo Mountains, eastern Puerto Rico: a preliminary study. In Proceedings of the 2nd International Conference on Fog and Fog Collection, eds. and , pp. 181–184. Ottawa, Canada: IDRC.Google Scholar
, , , , and (2002). Ion fluxes from fog and rain to an agricultural and a forest ecosystem in Europe. Atmospheric Research 64: 147–158.CrossRefGoogle Scholar
, , and (1993a). Combining measurements of transpiration and stable isotopes of water to determine groundwater discharge from forests. Journal of Hydrology 150: 563–587.CrossRefGoogle Scholar
, , and (1993b). Extraction of water from Eucalyptus trees for analysis of deuterium and oxygen-18: laboratory and field techniques. Plant, Cell, and Environment 16: 269–277.CrossRefGoogle Scholar
, and (2000). Using stable isotopes of water in evapotranspiration studies. Hydrological Processes 14: 1407–1421.3.0.CO;2-K>CrossRefGoogle Scholar
, , and (2006). Water extraction times for plant and soil materials used in stable isotope analysis. Rapid Commmunications in Mass Spectrometry 20: 1317–1321.CrossRefGoogle ScholarPubMed
, , , and (1985). The D/H ratios of sap in trees: implications for water sources and tree ring D/H ratios. Geochimica et Cosmochimica Acta 49: 237–246.CrossRefGoogle 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
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