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The effect of tree species diversity on fine-root production in a young temperate forest

The phenomenon of overyielding in species-diverse plant communities is mainly attributed to complementary resource use. Vertical niche differentiation belowground might be one potential mechanism for such complementarity. However, most studies that have analysed the diversity/productivity relationsh... Full description

Journal Title: Oecologia Aug 2012, Vol.169(4), pp.1105-1115
Main Author: Lei, Pifeng
Other Authors: Scherer-Lorenzen, Michael , Bauhus, Juergen
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0029-8549 ; E-ISSN: 1432-1939 ; DOI: 10.1007/s00442-012-2259-2
Link: http://search.proquest.com/docview/1032890183/?pq-origsite=primo
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title: The effect of tree species diversity on fine-root production in a young temperate forest
format: Article
creator:
  • Lei, Pifeng
  • Scherer-Lorenzen, Michael
  • Bauhus, Juergen
subjects:
  • Mortality
  • Vertical Distribution
  • Trees
  • Niches
  • Roots
  • Forests
  • Biomass
  • Complementarity
  • Soil
  • Differentiation
  • Cores
  • Species Diversity
  • Plant Communities
  • Abies
  • Pseudotsuga Menziesii
  • Picea Abies
  • Abies
  • Pseudotsuga Menziesii
  • Picea Abies
  • Biomass
  • Complementarity
  • Cores
  • Differentiation
  • Forests
  • Mortality
  • Niches
  • Plant Communities
  • Roots
  • Soil
  • Species Diversity
  • Trees
  • Vertical Distribution
  • Ecosystem and Ecology Studies
ispartof: Oecologia, Aug 2012, Vol.169(4), pp.1105-1115
description: The phenomenon of overyielding in species-diverse plant communities is mainly attributed to complementary resource use. Vertical niche differentiation belowground might be one potential mechanism for such complementarity. However, most studies that have analysed the diversity/productivity relationship and belowground niche differentiation have done so for fully occupied sites, not very young tree communities that are in the process of occupying belowground space. Here we used a 5-6 year old forest diversity experiment to analyse how fine-root (
language: eng
source:
identifier: ISSN: 0029-8549 ; E-ISSN: 1432-1939 ; DOI: 10.1007/s00442-012-2259-2
fulltext: fulltext
issn:
  • 00298549
  • 0029-8549
  • 14321939
  • 1432-1939
url: Link


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titleThe effect of tree species diversity on fine-root production in a young temperate forest
creatorLei, Pifeng ; Scherer-Lorenzen, Michael ; Bauhus, Juergen
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ispartofOecologia, Aug 2012, Vol.169(4), pp.1105-1115
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subjectMortality ; Vertical Distribution ; Trees ; Niches ; Roots ; Forests ; Biomass ; Complementarity ; Soil ; Differentiation ; Cores ; Species Diversity ; Plant Communities ; Abies ; Pseudotsuga Menziesii ; Picea Abies ; Abies ; Pseudotsuga Menziesii ; Picea Abies ; Biomass ; Complementarity ; Cores ; Differentiation ; Forests ; Mortality ; Niches ; Plant Communities ; Roots ; Soil ; Species Diversity ; Trees ; Vertical Distribution ; Ecosystem and Ecology Studies
descriptionThe phenomenon of overyielding in species-diverse plant communities is mainly attributed to complementary resource use. Vertical niche differentiation belowground might be one potential mechanism for such complementarity. However, most studies that have analysed the diversity/productivity relationship and belowground niche differentiation have done so for fully occupied sites, not very young tree communities that are in the process of occupying belowground space. Here we used a 5-6 year old forest diversity experiment to analyse how fine-root (<2 mm) production in ingrowth cores (0-30 cm) was influenced by tree species identity, as well as the species diversity and richness of tree neighbourhoods. Fine-root production during the first growing season after the installation of ingrowth cores increased slightly with tree species diversity, and four-species combinations produced on average 94.8% more fine-root biomass than monocultures. During the second growing season, fine-root mortality increased with tree species diversity, indicating an increased fine-root turnover in species-rich communities. The initial overyielding was attributable to the response to mixing by the dominant species, Pseudotsuga menziesii and Picea abies, which produced more fine roots in mixtures than could be expected from monocultures. In species-rich neighbourhoods, P. abies allocated more fine roots to the upper soil layer (0-15 cm), whereas P. menziesii produced more fine roots in the deeper layer (15-30 cm) than in species-poor neighbourhoods. Our results indicate that, although there may be no lasting overyielding in the fine-root production of species-diverse tree communities, increasing species diversity can lead to substantial changes in the production, vertical distribution, and turnover of fine roots of individual species.
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titleThe effect of tree species diversity on fine-root production in a young temperate forest
descriptionThe phenomenon of overyielding in species-diverse plant communities is mainly attributed to complementary resource use. Vertical niche differentiation belowground might be one potential mechanism for such complementarity. However, most studies that have analysed the diversity/productivity relationship and belowground niche differentiation have done so for fully occupied sites, not very young tree communities that are in the process of occupying belowground space. Here we used a 5-6 year old forest diversity experiment to analyse how fine-root (<2 mm) production in ingrowth cores (0-30 cm) was influenced by tree species identity, as well as the species diversity and richness of tree neighbourhoods. Fine-root production during the first growing season after the installation of ingrowth cores increased slightly with tree species diversity, and four-species combinations produced on average 94.8% more fine-root biomass than monocultures. During the second growing season, fine-root mortality increased with tree species diversity, indicating an increased fine-root turnover in species-rich communities. The initial overyielding was attributable to the response to mixing by the dominant species, Pseudotsuga menziesii and Picea abies, which produced more fine roots in mixtures than could be expected from monocultures. In species-rich neighbourhoods, P. abies allocated more fine roots to the upper soil layer (0-15 cm), whereas P. menziesii produced more fine roots in the deeper layer (15-30 cm) than in species-poor neighbourhoods. Our results indicate that, although there may be no lasting overyielding in the fine-root production of species-diverse tree communities, increasing species diversity can lead to substantial changes in the production, vertical distribution, and turnover of fine roots of individual species.
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abstractThe phenomenon of overyielding in species-diverse plant communities is mainly attributed to complementary resource use. Vertical niche differentiation belowground might be one potential mechanism for such complementarity. However, most studies that have analysed the diversity/productivity relationship and belowground niche differentiation have done so for fully occupied sites, not very young tree communities that are in the process of occupying belowground space. Here we used a 5-6 year old forest diversity experiment to analyse how fine-root (<2 mm) production in ingrowth cores (0-30 cm) was influenced by tree species identity, as well as the species diversity and richness of tree neighbourhoods. Fine-root production during the first growing season after the installation of ingrowth cores increased slightly with tree species diversity, and four-species combinations produced on average 94.8% more fine-root biomass than monocultures. During the second growing season, fine-root mortality increased with tree species diversity, indicating an increased fine-root turnover in species-rich communities. The initial overyielding was attributable to the response to mixing by the dominant species, Pseudotsuga menziesii and Picea abies, which produced more fine roots in mixtures than could be expected from monocultures. In species-rich neighbourhoods, P. abies allocated more fine roots to the upper soil layer (0-15 cm), whereas P. menziesii produced more fine roots in the deeper layer (15-30 cm) than in species-poor neighbourhoods. Our results indicate that, although there may be no lasting overyielding in the fine-root production of species-diverse tree communities, increasing species diversity can lead to substantial changes in the production, vertical distribution, and turnover of fine roots of individual species.
doi10.1007/s00442-012-2259-2
urlhttp://search.proquest.com/docview/1032890183/
date2012-08-01