Rasmussen, Finn N.

Rasmussen, Hanne Nina

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Copenhagen University Research Information System

u n i ve r s i t y  o f  co pe n h ag e n  Københavns UniversitetThe Epiphyte habitat - a tree biology perspectiveRasmussen, Hanne Nina; Rasmussen, Finn N.Publication date:2016Document versionPublisher's PDF, also known as Version of recordCitation for published version (APA):Rasmussen, H. N., & Rasmussen, F. N. (2016). The Epiphyte habitat - a tree biology perspective. Abstract from6th International Orchid Conservation Congress, Hongkong, China.Download date: 03. Feb. 2020The epiphyte habitat – a tree biology perspective  Rasmussen HN1,  Rasmussen FN2 1University of Copenhagen, Department of Geosciences and Nature Resource Management, Section for Forest, Nature, and Biomass, Rolighedsvej 23, 1958 Frederiksberg C, Denmark +45 35331703, Hnr@ign.ku.dk, ORCID 0000-0002-0181-9304.  2 University of Copenhagen, Natural History Museum of Denmark, ORCID 0000-0002-8282-8594 Among the fascinating relationships of orchids with other organisms, i.e.  pollinators, symbiotic fungi, and phorophytes, the latter is currently receiving the least attention. Studies show that there is hardly ever a monospecific relation between an epiphytic orchid species and a tree species, but preferences towards and avoidance of certain tree species are well documented, allowing a diversification of niches for epiphytic orchids. Often, the range af phorophytes for a particular orchid seems narrow, and could be a conservation concern in case of tree species composition change. Furthermore, epiphytic orchid species diversify in habitat within the crown of trees, some species being confined to twigs, other to larger branches or to main stems. In this review we look into the mechanisms that could prevent or confine establishment to certain trees and certain parts of the crown, discussing specific differences in bark quality as well as dynamic changes in crown position, branch size, and bark quality over the typical life span of the epiphytic orchid. The successful epiphyte needs to adjust to the continuous development of the phorophyte, being able to germinate on bark that is considerably younger than the bark supporting the flowering plants a decade or so later. The challenge and the outcome also depend on the success and growth rate of the phorophyte in question. We do have tools to approach these questions experimentally, but currently most data and inferences about the epiphytic habitat are based on correllative studies.   

The Epiphyte habitat - a tree biology perspective

https://curis.ku.dk/ws/files/173153538/Epiphyte_habitat_abstr.pdf

The Epiphyte habitat - a tree biology perspective

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