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Lakatos, M.; Obregon, A.; B&uuml;del, B. &amp; Bendix, J. (2012): <b>Midday dew - An overlooked factor enhancing photosynthetic activity of corticolous epiphytes in a wet tropical rain forest</b>. <i>New Phytologist</i> <b>194</b>, 245-253.

Resource Description
Title: Midday dew - An overlooked factor enhancing photosynthetic activity of corticolous epiphytes in a wet tropical rain forest
FOR816dw ID: 71
Publication Date: 2012-01-01
License and Usage Rights: PAK 823-825 data user agreement. (www.tropicalmountainforest.org/dataagreementp3.do)
Resource Owner(s):
Individual: Michael Lakatos
Contact:
Individual: Andre Obregon
Contact:
Individual: Burkhard Büdel
Contact:
Individual: Jörg Bendix
Contact:
Abstract:
• Additional water supplied by dew formation is an important resource for microbes, plants<br/> and animals in precipitation-limited habitats, but has received little attention in tropical forests<br/> until now.<br/> • We evaluated the micro-environmental conditions of tree stem surfaces and their epiphytic<br/> organisms in a neotropical forest, and present evidence for a novel mechanism of diurnal dew<br/> formation on these surfaces until midday that has physiological implications for corticolous<br/> epiphytes such as lichens.<br/> • In the understorey of a lowland forest in French Guiana, heat storage of stems during the<br/> day and delayed radiative loss during the night decreased stem surface temperatures by 6?C<br/> in comparison to the dew-point temperature of ambient air. This measured phenomenon<br/> induced modelled totals of diurnal dew formation between 0.29 and 0.69 mm d<br/> )1<br/> on the<br/> surface of the bark and the lichens until early afternoon.<br/> • Crustose lichens substantially benefit from this dew formation, because it prolongs photo-<br/> synthetic activity. This previously unrecognized mechanism of midday dew formation contrib-<br/> utes to the water supply of most corticolous organisms, and may be a general feature in forest<br/> habitats world-wide
Keywords:
| dew deposition | heat storage | microclimate | nonvascular plants | physiological ecology |
Literature type specific fields:
ARTICLE
Journal: New Phytologist
Volume: 194
Page Range: 245-253
Metadata Provider:
Individual: Tiziana Li Koch
Contact:
Online Distribution:
Download File: http://www.lcrs.de/publications.do?citid=71


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