Plant genes link forests and streams

Research output: Contribution to journalArticle

70 Citations (Scopus)

Abstract

Although it is understood that the composition of riparian trees can affect stream function through leaf litter fall, the potential effects of genetic variation within species are less understood. Using a naturally hybridizing cottonwood system, we examined the hypothesis that genetic differences among two parental species (Populus fremontii and P. angustifolia) and two groups of their hybrids (F1 and backcrosses to P. angustifolia) would affect litter decomposition rates and the composition of the aquatic invertebrate community that colonizes leaves. Three major findings emerged: (1) parental and hybrid types differ in litter quality, (2) decomposition differs between two groups, a fast group (P. fremontii and F1 hybrid), and a slow group (P. angustifolia and backcross hybrids), and (3) aquatic invertebrate communities colonizing P. fremontii litter differed significantly in composition from all other cross types, even though P. fremontii and the F1 hybrid decomposed at similar rates. These findings are in agreement with terrestrial arthropod studies in the same cottonwood system. However, the effects are less pronounced aquatically than those observed in the adjacent terrestrial community, which supports a genetic diffusion hypothesis. Importantly, these findings argue that genetic interactions link terrestrial and aquatic communities and may have significant evolutionary and conservation implications.

Original languageEnglish (US)
Pages (from-to)255-261
Number of pages7
JournalEcology
Volume87
Issue number1
DOIs
StatePublished - Jan 2006

Fingerprint

Populus fremontii
Populus angustifolia
gene
litter
aquatic invertebrates
genes
invertebrate
decomposition
aquatic communities
aquatic community
degradation
litterfall
leaf litter
plant litter
arthropod
arthropods
genetic variation
leaves

Keywords

  • Aquatic decomposition
  • Aquatic-terrestrial interaction
  • Cottonwood hybridization
  • Ecological genetics
  • Genetic introgression
  • Genetic variation
  • Hybrids
  • Leaf litter decomposition
  • Macroinvertebrate communities
  • Populus

ASJC Scopus subject areas

  • Ecology

Cite this

Plant genes link forests and streams. / LeRoy, Carri J.; Whitham, Thomas G; Keim, Paul S; Marks, Jane C.

In: Ecology, Vol. 87, No. 1, 01.2006, p. 255-261.

Research output: Contribution to journalArticle

@article{d612399581c24173b8d03697da4e2be4,
title = "Plant genes link forests and streams",
abstract = "Although it is understood that the composition of riparian trees can affect stream function through leaf litter fall, the potential effects of genetic variation within species are less understood. Using a naturally hybridizing cottonwood system, we examined the hypothesis that genetic differences among two parental species (Populus fremontii and P. angustifolia) and two groups of their hybrids (F1 and backcrosses to P. angustifolia) would affect litter decomposition rates and the composition of the aquatic invertebrate community that colonizes leaves. Three major findings emerged: (1) parental and hybrid types differ in litter quality, (2) decomposition differs between two groups, a fast group (P. fremontii and F1 hybrid), and a slow group (P. angustifolia and backcross hybrids), and (3) aquatic invertebrate communities colonizing P. fremontii litter differed significantly in composition from all other cross types, even though P. fremontii and the F1 hybrid decomposed at similar rates. These findings are in agreement with terrestrial arthropod studies in the same cottonwood system. However, the effects are less pronounced aquatically than those observed in the adjacent terrestrial community, which supports a genetic diffusion hypothesis. Importantly, these findings argue that genetic interactions link terrestrial and aquatic communities and may have significant evolutionary and conservation implications.",
keywords = "Aquatic decomposition, Aquatic-terrestrial interaction, Cottonwood hybridization, Ecological genetics, Genetic introgression, Genetic variation, Hybrids, Leaf litter decomposition, Macroinvertebrate communities, Populus",
author = "LeRoy, {Carri J.} and Whitham, {Thomas G} and Keim, {Paul S} and Marks, {Jane C}",
year = "2006",
month = "1",
doi = "10.1890/05-0159",
language = "English (US)",
volume = "87",
pages = "255--261",
journal = "Ecology",
issn = "0012-9658",
publisher = "Ecological Society of America",
number = "1",

}

TY - JOUR

T1 - Plant genes link forests and streams

AU - LeRoy, Carri J.

AU - Whitham, Thomas G

AU - Keim, Paul S

AU - Marks, Jane C

PY - 2006/1

Y1 - 2006/1

N2 - Although it is understood that the composition of riparian trees can affect stream function through leaf litter fall, the potential effects of genetic variation within species are less understood. Using a naturally hybridizing cottonwood system, we examined the hypothesis that genetic differences among two parental species (Populus fremontii and P. angustifolia) and two groups of their hybrids (F1 and backcrosses to P. angustifolia) would affect litter decomposition rates and the composition of the aquatic invertebrate community that colonizes leaves. Three major findings emerged: (1) parental and hybrid types differ in litter quality, (2) decomposition differs between two groups, a fast group (P. fremontii and F1 hybrid), and a slow group (P. angustifolia and backcross hybrids), and (3) aquatic invertebrate communities colonizing P. fremontii litter differed significantly in composition from all other cross types, even though P. fremontii and the F1 hybrid decomposed at similar rates. These findings are in agreement with terrestrial arthropod studies in the same cottonwood system. However, the effects are less pronounced aquatically than those observed in the adjacent terrestrial community, which supports a genetic diffusion hypothesis. Importantly, these findings argue that genetic interactions link terrestrial and aquatic communities and may have significant evolutionary and conservation implications.

AB - Although it is understood that the composition of riparian trees can affect stream function through leaf litter fall, the potential effects of genetic variation within species are less understood. Using a naturally hybridizing cottonwood system, we examined the hypothesis that genetic differences among two parental species (Populus fremontii and P. angustifolia) and two groups of their hybrids (F1 and backcrosses to P. angustifolia) would affect litter decomposition rates and the composition of the aquatic invertebrate community that colonizes leaves. Three major findings emerged: (1) parental and hybrid types differ in litter quality, (2) decomposition differs between two groups, a fast group (P. fremontii and F1 hybrid), and a slow group (P. angustifolia and backcross hybrids), and (3) aquatic invertebrate communities colonizing P. fremontii litter differed significantly in composition from all other cross types, even though P. fremontii and the F1 hybrid decomposed at similar rates. These findings are in agreement with terrestrial arthropod studies in the same cottonwood system. However, the effects are less pronounced aquatically than those observed in the adjacent terrestrial community, which supports a genetic diffusion hypothesis. Importantly, these findings argue that genetic interactions link terrestrial and aquatic communities and may have significant evolutionary and conservation implications.

KW - Aquatic decomposition

KW - Aquatic-terrestrial interaction

KW - Cottonwood hybridization

KW - Ecological genetics

KW - Genetic introgression

KW - Genetic variation

KW - Hybrids

KW - Leaf litter decomposition

KW - Macroinvertebrate communities

KW - Populus

UR - http://www.scopus.com/inward/record.url?scp=33644847424&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33644847424&partnerID=8YFLogxK

U2 - 10.1890/05-0159

DO - 10.1890/05-0159

M3 - Article

VL - 87

SP - 255

EP - 261

JO - Ecology

JF - Ecology

SN - 0012-9658

IS - 1

ER -