NDLI: Analysis of the “shelter tree-effect” of natural and exotic forest canopies on the growth of young Podocarpus falcatus trees in southern Ethiopia

Content Provider	Springer Nature Link
Author	Strobl, Simone Fetene, Masresha Beck, Erwin H.
Copyright Year	2011
Abstract	Plantations of exotic trees on areas where tropical forest has been clear-felled have been reported to facilitate regrowth of indigenous tree species. This so-called nurse- or shelter tree effect was investigated in a montane semihumid site in southern Ethiopia where plantations of Pinus patula and Eucalyptus saligna grow in close vicinity to the natural Podocarpus falcatus mixed forest. Physiological performance of P. falcatus saplings growing in the exotic and the natural forests was investigated over the year. Compared with the natural forest, photosynthetic carbon gain and growth of the saplings were significantly enhanced under Pinus patula while likewise retarded under Eucalyptus saligna. Diverging effects of the differently dense shelter canopies on the saplings could be traced to differences in the sub-canopy microclimates and particularly to the intensities and temporal distribution of photosynthetic active radiation (PAR). Moisture also played an important role for photosynthetic carbon gain: while the morning patterns of CO2 uptake were significantly correlated with the patterns of sunflecks, stomatal conductance was the determinant factor in the afternoon. Analysis of the photosynthetic efficiency of sunflecks revealed a lower quantum yield than the basic diffuse PAR intensity. Compared with a theoretically even distribution of the daily PAR, CO2 uptake under the real light climate was 70% under Pinus and in the natural forest, and 59% under Eucalyptus. Relating growth rates of Podocarpus saplings to photosynthesis the microclimate under Pinus was 2.5 times as effective as that in the natural forest and five times more effective than under Eucalyptus.
Starting Page	769
Ending Page	783
Page Count	15
File Format	PDF
ISSN	09311890
Journal	Trees
Volume Number	25
Issue Number	5
e-ISSN	14322285
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-03-29
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Podocarpus falcatus Growth Photosynthesis Exotic plantations Shelter tree effect Ethiopia Plant Anatomy/Development Agriculture Plant Sciences Plant Physiology Plant Pathology Forestry
Content Type	Text
Resource Type	Article
Subject	Ecology Physiology Plant Science Forestry

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Growth and ecophysiology of seedlings of Podocarpus falcatus in plantations of exotic species and in a natural montane forest in Ethiopia

Leaf gas exchange of trees in old-growth and young secondary forest stands in Sulawesi, Indonesia

Effects of sulfur dioxide on growth and net photosynthesis of six Japanese forest tree species grown under different nitrogen loads

Foliage dynamics, leaf traits, and growth of coexisting evergreen and deciduous trees in a tropical montane forest in Ethiopia

Cambial growth dynamics and climatic control of different tree life forms in tropical mountain forest in Ethiopia

Growth patterns of Nothofagus pumilio trees along altitudinal gradients in Tierra del Fuego, Argentina

Influence of the exclusion distance among trees on gap fraction and foliage clumping index of forest plantations

Light acclimation of four native tree species in felling gaps within a tropical mountain rainforest

Different predictors determining litter decomposition rate in functional groups of the tree plantations in a common garden

Analysis of the “shelter tree-effect” of natural and exotic forest canopies on the growth of young Podocarpus falcatus trees in southern Ethiopia

Similar Documents

Growth and ecophysiology of seedlings of Podocarpus falcatus in plantations of exotic species and in a natural montane forest in Ethiopia

Leaf gas exchange of trees in old-growth and young secondary forest stands in Sulawesi, Indonesia

Effects of sulfur dioxide on growth and net photosynthesis of six Japanese forest tree species grown under different nitrogen loads

Foliage dynamics, leaf traits, and growth of coexisting evergreen and deciduous trees in a tropical montane forest in Ethiopia

Cambial growth dynamics and climatic control of different tree life forms in tropical mountain forest in Ethiopia

Growth patterns of Nothofagus pumilio trees along altitudinal gradients in Tierra del Fuego, Argentina

Influence of the exclusion distance among trees on gap fraction and foliage clumping index of forest plantations

Light acclimation of four native tree species in felling gaps within a tropical mountain rainforest

Different predictors determining litter decomposition rate in functional groups of the tree plantations in a common garden

Analysis of the “shelter tree-effect” of natural and exotic forest canopies on the growth of young Podocarpus falcatus trees in southern Ethiopia