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  Fluorescence Measurements as Indicator of Adaptation Strategies in an Abundant Tree Species from Central Amazonian Floodplain Forests

Waldhoff, D., Junk, W. J., & Furch, B. (2002). Fluorescence Measurements as Indicator of Adaptation Strategies in an Abundant Tree Species from Central Amazonian Floodplain Forests. In R. Lieberei, H. Bianchi, V. Boehm, & C. Reisdorff (Eds.), Neotropical Ecosystems: Proceedings of the German-Brazilian Workshop, Hamburg 2000 (pp. 573-577). Geesthacht: GKSS-Forschungszentrum.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-DDE2-5 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-DDE3-3
Genre: Conference Paper

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 Creators:
Waldhoff, Danielle1, Author           
Junk, Wolfgang Johannes1, Author           
Furch, Bodo, Author
Affiliations:
1Working Group Tropical Ecology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_976549              

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Free keywords: Chlorophyll fluorescence; Floodplain forests; Inundation; Polygonaceae
 Abstract: Symmeria paniculata is a common, evergreen tree species in the lowest part of the flooding gradient in black water inundation forests in Central Amazonia (Brazil) which does not shed submerged leaves. Chlorophyll a fluorescence was measured in aerial and submerged leaves in 1999-2000. Measurements were performed at up to 8 m under water. The Fm/Fv values ('current photochemical capacity' of photosystem II) in leaves submerged at 0-1 m depth were above the lower limit of natural variation of healthy leaves (>0.7), indicating an undamaged photochemical apparatus. Leaves submerged at 1-8 m depth (up to 175 days inundation at the time of measuring) showed Fv/Fm values between 0.6 and 0.4. The recovery of these Fv/Fm values to ³0.7 during falling water levels apparently took place still under water. Rapid light curves (RLC) of leaves submerged at >1 m depth revealed that PS II started with electron transport when lighted. However, the electron transport was apparently inhibited shortly after the start. A negative correlation was found between the inhibition of electron transport and the depth/duration of inundation

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Language(s): eng - English
 Dates: 2002
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 31391
Other: 2182/S 37914
 Degree: -

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Title: Neotropical Ecosystems. Proceedings of the German-Brazilian Workshop, Hamburg 2000
Place of Event: Hamburg
Start-/End Date: 2000-09-03 - 2000-09-08

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Title: Neotropical Ecosystems : Proceedings of the German-Brazilian Workshop, Hamburg 2000
Source Genre: Proceedings
 Creator(s):
Lieberei, Reinhard, Editor
Bianchi, Helmut, Editor
Boehm, Vera, Editor
Reisdorff, Christoph, Editor
Affiliations:
-
Publ. Info: Geesthacht : GKSS-Forschungszentrum
Pages: book with abstracts and CD-ROM with fulltexts Volume / Issue: - Sequence Number: - Start / End Page: 573 - 577 Identifier: ISBN: 3-00-010691-X