Local adaptation at the range peripheries of Sitka spruce

M. Mimura, S. N. Aitken

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

High-dispersal rates in heterogeneous environments and historical rapid range expansion can hamper local adaptation; however, we often see clinal variation in high-dispersal tree species. To understand the mechanisms of the species' distribution, we investigated local adaptation and adaptive plasticity in a range-wide context in Sitka spruce, a wind-pollinated tree species that has recently expanded its range after glaciations. Phenotypic traits were observed using growth chamber experiments that mimicked temperature and photoperiodic regimes from the limits of the species realized niche. Bud phenology exhibited parallel reaction norms among populations; however, putatively adaptive plasticity and strong divergent selection were seen in bud burst and bud set timing respectively. Natural selection appears to have favoured genotypes that maximize growth rate during available frost-free periods in each environment. We conclude that Sitka spruce has developed local adaptation and adaptive plasticity throughout its range in response to current climatic conditions despite generally high pollen flow and recent range expansion.

Original languageEnglish
Pages (from-to)249-258
Number of pages10
JournalJournal of Evolutionary Biology
Volume23
Issue number2
DOIs
Publication statusPublished - Feb 1 2010
Externally publishedYes

Fingerprint

Picea sitchensis
local adaptation
buds
plasticity
range expansion
bud
pollen flow
glaciation
budburst
frost
growth chambers
reaction norm
natural selection
phenology
niches
biogeography
niche
genotype
pollen
temperature

Keywords

  • Gene flow
  • Local adaptation
  • Phenology
  • Phenotypic plasticity
  • Picea sitchensis
  • Range-wide

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

Cite this

Local adaptation at the range peripheries of Sitka spruce. / Mimura, M.; Aitken, S. N.

In: Journal of Evolutionary Biology, Vol. 23, No. 2, 01.02.2010, p. 249-258.

Research output: Contribution to journalArticle

@article{e410d6d2f30d4363895651b8280596f9,
title = "Local adaptation at the range peripheries of Sitka spruce",
abstract = "High-dispersal rates in heterogeneous environments and historical rapid range expansion can hamper local adaptation; however, we often see clinal variation in high-dispersal tree species. To understand the mechanisms of the species' distribution, we investigated local adaptation and adaptive plasticity in a range-wide context in Sitka spruce, a wind-pollinated tree species that has recently expanded its range after glaciations. Phenotypic traits were observed using growth chamber experiments that mimicked temperature and photoperiodic regimes from the limits of the species realized niche. Bud phenology exhibited parallel reaction norms among populations; however, putatively adaptive plasticity and strong divergent selection were seen in bud burst and bud set timing respectively. Natural selection appears to have favoured genotypes that maximize growth rate during available frost-free periods in each environment. We conclude that Sitka spruce has developed local adaptation and adaptive plasticity throughout its range in response to current climatic conditions despite generally high pollen flow and recent range expansion.",
keywords = "Gene flow, Local adaptation, Phenology, Phenotypic plasticity, Picea sitchensis, Range-wide",
author = "M. Mimura and Aitken, {S. N.}",
year = "2010",
month = "2",
day = "1",
doi = "10.1111/j.1420-9101.2009.01910.x",
language = "English",
volume = "23",
pages = "249--258",
journal = "Journal of Evolutionary Biology",
issn = "1010-061X",
publisher = "Wiley-Blackwell",
number = "2",

}

TY - JOUR

T1 - Local adaptation at the range peripheries of Sitka spruce

AU - Mimura, M.

AU - Aitken, S. N.

PY - 2010/2/1

Y1 - 2010/2/1

N2 - High-dispersal rates in heterogeneous environments and historical rapid range expansion can hamper local adaptation; however, we often see clinal variation in high-dispersal tree species. To understand the mechanisms of the species' distribution, we investigated local adaptation and adaptive plasticity in a range-wide context in Sitka spruce, a wind-pollinated tree species that has recently expanded its range after glaciations. Phenotypic traits were observed using growth chamber experiments that mimicked temperature and photoperiodic regimes from the limits of the species realized niche. Bud phenology exhibited parallel reaction norms among populations; however, putatively adaptive plasticity and strong divergent selection were seen in bud burst and bud set timing respectively. Natural selection appears to have favoured genotypes that maximize growth rate during available frost-free periods in each environment. We conclude that Sitka spruce has developed local adaptation and adaptive plasticity throughout its range in response to current climatic conditions despite generally high pollen flow and recent range expansion.

AB - High-dispersal rates in heterogeneous environments and historical rapid range expansion can hamper local adaptation; however, we often see clinal variation in high-dispersal tree species. To understand the mechanisms of the species' distribution, we investigated local adaptation and adaptive plasticity in a range-wide context in Sitka spruce, a wind-pollinated tree species that has recently expanded its range after glaciations. Phenotypic traits were observed using growth chamber experiments that mimicked temperature and photoperiodic regimes from the limits of the species realized niche. Bud phenology exhibited parallel reaction norms among populations; however, putatively adaptive plasticity and strong divergent selection were seen in bud burst and bud set timing respectively. Natural selection appears to have favoured genotypes that maximize growth rate during available frost-free periods in each environment. We conclude that Sitka spruce has developed local adaptation and adaptive plasticity throughout its range in response to current climatic conditions despite generally high pollen flow and recent range expansion.

KW - Gene flow

KW - Local adaptation

KW - Phenology

KW - Phenotypic plasticity

KW - Picea sitchensis

KW - Range-wide

UR - http://www.scopus.com/inward/record.url?scp=74349111792&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=74349111792&partnerID=8YFLogxK

U2 - 10.1111/j.1420-9101.2009.01910.x

DO - 10.1111/j.1420-9101.2009.01910.x

M3 - Article

C2 - 20021549

AN - SCOPUS:74349111792

VL - 23

SP - 249

EP - 258

JO - Journal of Evolutionary Biology

JF - Journal of Evolutionary Biology

SN - 1010-061X

IS - 2

ER -