Skip navigation
Skip navigation

Photosynthetic parameters, dark respiration and leaf traits in the canopy of a Peruvian tropical montane cloud forest

van de Weg, Martine J; Meir, Patrick; Grace, J; Ramos, Guilmair Damian

Description

Few data are available describing the photosynthetic parameters of the leaves of tropical montane cloud forests (TMCF). Here, we present a study of photosynthetic leaf traits (Vcmax and Jmax), foliar dark respiration (Rd), foliar nitrogen (N) and phosphorus (P), and leaf mass per area (LMA) throughout the canopy for five different TMCF species at 3025 m a. s. l. in Andean Peru. All leaf traits showed a significant relationship with canopy height when expressed on an area basis, and Vcmax-area...[Show more]

dc.contributor.authorvan de Weg, Martine J
dc.contributor.authorMeir, Patrick
dc.contributor.authorGrace, J
dc.contributor.authorRamos, Guilmair Damian
dc.date.accessioned2015-12-13T22:39:54Z
dc.identifier.issn0029-8549
dc.identifier.urihttp://hdl.handle.net/1885/77988
dc.description.abstractFew data are available describing the photosynthetic parameters of the leaves of tropical montane cloud forests (TMCF). Here, we present a study of photosynthetic leaf traits (Vcmax and Jmax), foliar dark respiration (Rd), foliar nitrogen (N) and phosphorus (P), and leaf mass per area (LMA) throughout the canopy for five different TMCF species at 3025 m a. s. l. in Andean Peru. All leaf traits showed a significant relationship with canopy height when expressed on an area basis, and Vcmax-area and Jmax-area almost halved when descending through the TMCF canopy. When corrected to a common temperature, average Vcmax and Jmax on a leaf area basis were similar to lowland tropical values, but lower when expressed on a mass basis, because of the higher TMCF LMA values. By contrast, Rd on an area basis was higher than found in tropical lowland forests at a common temperature, and similar to lowland forests on a mass basis. The TMCF Jmax-Vcmax relationship was steeper than in other tropical biomes, and we propose that this can be explained by either the light conditions or the relatively low VPD in the studied TMCF. Furthermore, Vcmax had a significant-though relatively weak and shallow-relationship with N on an area basis, but not with P, which is consistent with the general hypothesis that TMCFs are N rather than P limited. Finally, the observed Vcmax-N relationship (i.e., maximum photosynthetic nitrogen use efficiency) was distinctly different from those in tropical and temperate regions, probably because the TMCF leaves compensate for reduced Rubisco activity in cool environments.
dc.publisherSpringer
dc.sourceOecologia
dc.subjectKeywords: carbon dioxide; nitrogen; phosphorus; ribulosebisphosphate carboxylase; biome; canopy; cloud forest; forest ecosystem; leaf morphology; lowland environment; montane forest; nitrogen; nutrient limitation; nutrient use efficiency; parameterization; phosphor A-C i curves; Leaf mass per area; Nitrogen; Phosphorus; V cmax
dc.titlePhotosynthetic parameters, dark respiration and leaf traits in the canopy of a Peruvian tropical montane cloud forest
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume168
dc.date.issued2012
local.identifier.absfor060705 - Plant Physiology
local.identifier.ariespublicationf5625xPUB6696
local.type.statusPublished Version
local.contributor.affiliationvan de Weg, Martine J, University of Edinburgh
local.contributor.affiliationMeir, Patrick, College of Medicine, Biology and Environment, ANU
local.contributor.affiliationGrace, J, University of Edinburgh
local.contributor.affiliationRamos, Guilmair Damian, Universidad de San Antonio Abad del Cusco
local.description.embargo2037-12-31
local.bibliographicCitation.issue1
local.bibliographicCitation.startpage23
local.bibliographicCitation.lastpage34
local.identifier.doi10.1007/s00442-011-2068-z
local.identifier.absseo970106 - Expanding Knowledge in the Biological Sciences
dc.date.updated2016-02-24T09:30:39Z
local.identifier.scopusID2-s2.0-84855607343
local.identifier.thomsonID000299058100003
CollectionsANU Research Publications

Download

File Description SizeFormat Image
01_van de Weg_Photosynthetic_parameters,_2012.pdf457.34 kBAdobe PDF    Request a copy


Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  19 May 2020/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator