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Epiphytic biomass of a tropical montane forest varies with topography

  • F. A. Werner (a1), J. Homeier (a2), M. Oesker (a3) and J. Boy (a4)
Abstract:

The spatial heterogeneity of tropical forest epiphytes has rarely been quantified in terms of biomass. In particular, the effect of topographic variation on epiphyte biomass is poorly known, although forests on ridges and ravines can differ drastically in stature and exposure. In an Ecuadorian lower montane forest we quantified epiphytic biomass along two gradients: (1) the twig–branch–trunk trajectory, and (2) the ridge–ravine gradient. Twenty-one trees were sampled in each of three forest types (ridge, slope, ravine positions). Their epiphytic biomass was extrapolated to stand level based on basal area–epiphyte load relationships, with tree basal areas taken from six plots of 400 m2 each per forest type. Our results document the successional addition and partial replacement of lichens by bryophytes, angiosperms and finally dead organic matter along the twig–branch–trunk trajectory. Despite having the highest tree basal area, total epiphytic biomass (mean ± SD) of ravine forest was significantly lower (2.6 ± 0.7 Mg ha−1) than in mid-slope forest (6.3 ± 1.1 Mg ha−1) and ridge forest (4.4 ± 1.6 Mg ha−1), whereas maximum bryophyte water storage capacity was significantly higher. We attribute this pattern to differences in forest dynamics, stand structure and microclimate. Although our study could not differentiate between direct effects of slope position (nutrient availability, mesoclimate) and indirect effects (stand structure and dynamics), it provides evidence that fine-scale topography needs to be taken into account when extrapolating epiphytic biomass and related matter fluxes from stand-level data to the regional scale.

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Corresponding author
1Corresponding author. Email: florianwerner@yahoo.com
References
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BELLINGHAM, P. J. & TANNER, E. V. J. 2000. The influence of topography on tree growth, mortality, and recruitment in a tropical montane forest. Biotropica 32:378384.
BENDIX, J., ROLLENBECK, R., RICHTER, M., FABIAN, P. & EMCK, P. 2008. Climate. Pp. 6373 in Beck, E., Bendix, J., Kottke, I., Makeschin, F. & Mosandl, R. (eds.). Gradients in a tropical mountain ecosystem of Ecuador. Springer, Berlin.
BENJAMINI, Y. & HOCHBERG, Y. 1995. Controlling the false discovery rate: a practical and powerful approach to multiple testing. Journal of the Royal Statistical Society B 57:289300.
BIRCH, H. F. & FRIEND, M. T. 1956. The organic-matter and nitrogen status of East African soils. Journal of Soil Science 7:156167.
BRUIJNZEEL, L. A., MULLIGAN, M. & SCATENA, F. N. 2011. Hydrometeorology of tropical montane cloud forests: emerging patterns. Hydrological Processes 25:465498.
CAVELIER, J., JARAMILLO, M., SOLIS, D. & DE LEON, D. 1997. Water balance and nutrient inputs in bulk precipitation in tropical montane cloud forest in Panama. Journal of Hydrology 193:8396.
CHEN, L., LIU, W. Y. & WANG, G. S. 2010. Estimation of epiphytic biomass and nutrient pools in the subtropical montane cloud forest in the Ailao Mountains, south-western China. Ecological Research 25:315325.
DÍAZ, I. A., SIEVING, K. E., PEÑA-FOXON, M. E., LARRAÍN, J. & ARMESTO, J. J. 2010. Epiphyte diversity and biomass loads of canopy emergent trees in Chilean temperate rain forests: a neglected functional component. Forest Ecology and Management 259:14901501.
DUDGEON, W. 1923. Succession of epiphytes in the Quercus incana forest at Landour, western Himalayas. Preliminary notes. Journal of the Indian Botanical Society 3:270272.
EDWARDS, P. J. & GRUBB, P. J. 1977. Studies of mineral cycling in a montane rainforest in New Guinea I. The distribution of organic matter in the vegetation and soil. Journal of Ecology 65:943969.
EMCK, P. 2007. A climatology of South Ecuador. Ph.D. thesis, Friedrich-Alexander-Universität, Erlangen. 275 pp.
FREIBERG, M. & FREIBERG, E. 2000. Epiphyte diversity and biomass in the canopy of lowland and montane forests in Ecuador. Journal of Tropical Ecology 16:673688.
GENTRY, A. H. & DODSON, C. H. 1987. Diversity and biogeography of neotropical vascular epiphytes. Annals of the Missouri Botanical Garden 74:205233.
GÜNTER, S., CABRERA, O., WEBER, M., STIMM, B., ZIMMERMANN, M., FIEDLER, K., KNUTH, J., BOY, J., WILCKE, W., IOST, S., MAKESCHIN, F., WERNER, F. A., GRADSTEIN, S. R. & MOSANDL, R. 2008. Natural forest management in neotropical mountain rain forests – an ecological experiment. Pp. 363376 in Beck, E., Bendix, J., Kottke, I., Makeschin, F. & Mosandl, R. (eds.). Gradients in a tropical mountain ecosystem of Ecuador. Springer, Berlin.
HOFSTEDE, R. G. M., WOLF, J. H. D. & BENZING, D. H. 1993. Epiphytic biomass and nutrient status of a Colombian upper montane rain forest. Selbyana 14:3745.
HÖLSCHER, D., KÖHLER, L., VAN DIJK, A. & BRUIJNZEEL, L. A. 2004. The importance of epiphytes to total rainfall interception by a tropical montane rain forest in Costa Rica. Journal of Hydrology 292:308322.
HOLWERDA, F., BRUIJNZEEL, L. A., MUNOZ-VILLERS, L. E., EQUIHUA, M. & ASBJORNSEN, H. 2010. Rainfall and cloud water interception in mature and secondary lower montane cloud forests of central Veracruz, Mexico. Journal of Hydrology 384:8496.
HOMEIER, J. 2004. Baumdiversität, Waldstruktur und Wachstumsdynamik zweier tropischer Bergregenwälder in Ecuador und Costa Rica. Dissertationes Botanicae 391:1181.
HOMEIER, J., WERNER, F. A., GRADSTEIN, S. R., BRECKLE, S.-W. & RICHTER, M. 2008. Potential vegetation and floristic composition of Andean forests in South Ecuador, with a focus on the RBSF. Pp. 87100 in Beck, E., Bendix, J., Kottke, I., Makeschin, F. & Mosandl, R. (eds.). Gradients in a tropical mountain ecosystem of Ecuador. Springer, Berlin.
HOMEIER, J., BRECKLE, S.-W., GÜNTER, S., ROLLENBECK, R. T. & LEUSCHNER, C. 2010. Tree diversity, forest structure and productivity along altitudinal and topographical gradients in a species-rich Ecuadorian montane rain forest. Biotropica 42:140148.
HSU, C.-C., HORNG, F.-W. & KUO, C.-M. 2002. Epiphyte biomass and nutrient capital of a moist subtropical forest in north-eastern Taiwan. Journal of Tropical Ecology 18:659670.
KLINGE, H. & HERRERA, R. 1983. Phytomass structure of natural plant communities on spodosols in southern Venezuela: the tall Amazon caatinga forest. Vegetatio 53:6584.
KÖHLER, L. 2002. Die Bedeutung der Epiphyten im ökosystemaren Wasser- und Nährstoffumsatz verschiedener Altersstadien eines Bergregenwaldes in Costa Rica. Ph.D. thesis, Georg-August-Universität, Göttingen. 152 pp.
KÖHLER, L., TOBÓN, C., FRUMAU, K. F. A. & BRUIJNZEEL, L. A. S. 2007. Biomass and water storage dynamics of epiphytes in old-growth and secondary montane cloud forest stands in Costa Rica. Plant Ecology 193:171184.
KREFT, H., KÖSTER, N., KÜPER, W., NIEDER, J. & BARTHLOTT, W. 2004. Diversity and biogeography of vascular epiphytes in Western Amazonia, Yasuní, Ecuador. Journal of Biogeography 31:14631476.
KÜRSCHNER, H. & PAROLLY, G. 2004. Phytomass and water storage capacity of epiphytic rainforest bryophyte communities in S Ecuador. Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 125:489504.
LIEDE, S. & BRECKLE, S.-W. (eds.) 2007. Provisional checklists of flora and fauna of the San Francisco valley and its surroundings (Estación Científica San Francisco, Prov. Zamora-Chinchipe, Southern Ecuador). Ecotropical Monographs 4. Gesellschaft für Tropenökologie, Bonn. 256 pp.
MACKENSEN, J., TILLERY-STEVENS, M., KLINGE, R. & FÖLSTER, H. 2000. Site parameters, species composition, phytomass structure and element stores of a terra-firme forest in East-Amazonia, Brazil. Plant Ecology 151:101119.
MCCUNE, B. 1993. Gradients in epiphyte biomass in three Pseudotsuga–Tsuga forests of different ages in western Oregon and Washington. Bryologist 96:405411.
MOTZER, T. 2005. Micrometeorological aspects of a tropical mountain forest. Agricultural and Forest Meteorology 135:230240.
NADKARNI, N. M. 1984. Epiphyte biomass and nutrient capital of a neotropical elfin forest. Biotropica 16:249256.
NADKARNI, N. M. 2000. Colonization of stripped branch surfaces by epiphytes in a lower montane cloud forest, Monteverde, Costa Rica. Biotropica 32:358363.
NADKARNI, N. M., SCHAEFER, D., MATELSON, T. J. & SOLANO, R. 2004. Biomass and nutrient pools of canopy and terrestrial components in a primary and a secondary montane cloud forest, Costa Rica. Forest Ecology and Management 198:223236.
NÖSKE, N. M., HILT, N., WERNER, F. A., BREHM, G., FIEDLER, K., SIPMAN, H. J. M. & GRADSTEIN, S. R. 2008. Disturbance effects on diversity of epiphytes and moths in a montane forest in Ecuador. Basic and Applied Ecology 9:412.
OESKER, M., DALITZ, H., GÜNTHER, S., HOMEIER, J. & MATEZKI, S. 2008. Spatial heterogeneity patterns – a comparison between ravines and crests in the upper part of a evergreen lower montane forest. Pp. 267274 in Beck, E., Bendix, J., Kottke, I., Makeschin, F. & Mosandl, R. (eds.). Gradients in a tropical mountain ecosystem of Ecuador. Springer, Berlin.
OESKER, M., DALITZ, H., HOMEIER, J. & BRUIJNZEEL, L. A. 2010. Spatial heterogeneity of canopy throughfall quantity and quality in a tropical mountain forest in South Ecuador. Pp. 391401 in Bruijnzeel, L. A., Scatena, F. N. & Hamilton, L. S. (eds.). Tropical montane cloud forests: science for conservation and management. Cambridge University Press, Cambridge.
PÓCS, T. 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 Scientiarium Hungaricae 26:143167.
SIPMAN, H. J. M. & HARRIS, R. C. 1989. Lichens. Pp. 303309 in Lieth, H. & Werger, M. J. A. (eds.). Tropical rain forest ecosystems (biogeographical and ecological studies). Elsevier, Amsterdam.
TAKUYA, M., AIBA, S.-I. & KITAYAMA, K. 2002. Effects of topography on tropical lower montane forests under different geological conditions on Mount Kinabalu, Borneo. Plant Ecology 159:3549.
TANNER, E. V. J. 1980. Studies on the biomass and productivity in a series of montane rain forests in Jamaica. Journal of Ecology 68:573588.
TOBÓN, C., KÖHLER, L., FRUMAU, K. F. A., BRUIJNZEEL, L. A., BURKARD, R. & SCHMID, S. 2010. Water dynamics of epiphytic vegetation in a lower montane cloud forest: fog interception, storage, and evaporation. Pp. 261267 in Bruijnzeel, L. A., Scatena, F. N. & Hamilton, L. S. (eds.). Tropical montane cloud forests: science for conservation and management. Cambridge University Press, Cambridge.
UMANA, N. H. N. & WANEK, W. 2010. Large canopy exchange fluxes of inorganic and organic nitrogen and preferential retention of nitrogen by epiphytes in a tropical lowland rainforest. Ecosystems 13:367381.
VENEKLAAS, E. J., ZAGT, R. J., VAN LEERDAM, A., VAN EK, R., BROEKHOVEN, A. J. & VAN GENDEREN, M. 1990. Hydrological properties of the epiphyte mass of a montane tropical rain forest, Colombia. Vegetatio 89:183192.
WEAVER, P. L. 1972. Cloud moisture interception in the Luquillo Mountains of Puerto Rico. Caribbean Journal of Science 12:129144.
WERNER, F. A. & GRADSTEIN, S. R. 2009. Diversity of dry forest epiphytes along a gradient of human disturbance in the tropical Andes. Journal of Vegetation Science 20:5968.
WEST, B. G., BROWN, J. H. & ENQUIST, B. J. 1999. A general model for the structure and allometry of plant vascular systems. Nature 400:664667.
WILCKE, W., OELMANN, Y., SCHMITT, A., VALAREZO, C., ZECH, W. & HOMEIER, J. 2008. Soil properties and tree growth along an altitudinal transect in Ecuadorian tropical montane forest. Journal of Plant Nutrition and Soil Science 171:220230.
WOLF, J. H. D. 1995. Diversity patterns and biomass of epiphytic bryophytes and lichens along an altitudinal gradient in the northern Andes. Annals of the Missouri Botanical Garden 80:928960.
WOLF, J. H. D., GRADSTEIN, S. R. & NADKARNI, N. M. 2009. A protocol for sampling vascular epiphyte richness and abundance. Journal of Tropical Ecology 25:107121.
WOLF, K., VELDKAMP, E., HOMEIER, J., FLESSA, H. & MARTINSON, G. In press. Nitrogen availability links forest productivity, soil nitrous oxide and nitric oxide fluxes of a tropical montane forest in southern Ecuador. Global Biogeochemical Cycles.
ZIMMERMANN, A., WILCKE, W. & ELSENBEER, H. 2007. Spatial and temporal patterns of throughfall quantity and quality in a tropical montane forest in Ecuador. Journal of Hydrology 343:8096.
ZOTZ, G. & VOLLRATH, B. 2003. The epiphyte vegetation of the palm, Socratea exorrhiza – correlations with tree size, tree age, and bryophyte cover. Journal of Tropical Ecology 19:8190.
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