Intraspecific responses to climate reveal nonintuitive warming impacts on a widespread thermophilic conifer

Patsiou, Theofania S.; Shestakova, Tatiana A.; Klein, Tamir; di Matteo, Giovanni; Sbay, Hassan; Chambel, M Regina; Zas, Rafael; Voltas, Jordi (2020). Intraspecific responses to climate reveal nonintuitive warming impacts on a widespread thermophilic conifer. New Phytologist, 228(2), pp. 525-540. Wiley-Blackwell 10.1111/nph.16656

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Many ecologically important forest trees from dry areas have been insufficiently investigated for their ability to adapt to the challenges posed by climate change, which hampers the implementation of mitigation policies. We analyzed 14 common-garden experiments across the Mediterranean of the widespread thermophilic conifer Pinus halepensis, involving 157 populations categorized into five ecotypes. Ecotype-specific tree height responses to climate were applied to projected climate change (2071-2100 AD), to project potential growth patterns both locally and across the species' range. We found contrasting ecotypic sensitivities to annual precipitation but comparatively uniform responses to mean temperature, while evidence of local adaptation for tree height was limited to mesic ecotypes. We projected intriguing patterns of response range-wide, implying either height inhibition or stimulation of up to 75%, and deduced that the ecotype currently experiencing more favorable (wetter) conditions will show the largest inhibition. Extensive height reductions can be expected for coastal areas of France, Greece, Spain and northern Africa. Our findings underline that intraspecific variations in sensitivity to precipitation must be considered when projecting tree height responses of dry forests to future climate. The ecotype-specific projected performances call for management activities to ensure forest resilience in the Mediterranean through, e.g. tailored deployment strategies.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS)
08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS) > Ecological Genomics

UniBE Contributor:

Patsiou, Theofania

Subjects:

500 Science > 580 Plants (Botany)

ISSN:

0028-646X

Publisher:

Wiley-Blackwell

Language:

English

Submitter:

Peter Alfred von Ballmoos-Haas

Date Deposited:

27 May 2020 11:48

Last Modified:

12 Jan 2021 09:56

Publisher DOI:

10.1111/nph.16656

Uncontrolled Keywords:

Aleppo pine; climate sensitivity; ecotype; factorial regression; intraspecific adaptation; response function; space for time substitution.

BORIS DOI:

10.7892/boris.144279

URI:

https://boris.unibe.ch/id/eprint/144279

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