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Effects of post-glacial phylogeny and genetic diversity on the growth variability and climate sensitivity of European silver fir

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1. Growth rates of European silver fir (Abies alba Mill.) rapidly increased in the last century. At the
same time, ring widths declined at the species southern distribution limits in the Mediterranean.
Such diverse growth trends and responses have largely been attributed to regional climate conditions,
but this was prior to considering the species’ post-glacial phylogeny.

2. A dendrochronological network composed of 1961 tree-ring width series (TRW) from 78 silver
fir sites between 365 and 1400 m a.s.l. along the Carpathian Arc was compiled. Spatial differences
in the species’ genetic diversity were investigated from genetic data of 69 silver fir populations in
the region. Differences in growth variability and climate sensitivity were then related to post-glacial
phylogeny and genetic diversity.

3. Significant differences in interannual and longer-term growth trends and climate responses across
the Carpathian Arc were found to coincide with the geographical north–south separation of two
post-glacial populations from effective refugia originating from the Apennine and Balkan peninsulas.
Summer temperature was the main driver of growth in the western (Apennine) lineage, whereas ring
widths in the Balkan population from the east were predominantly controlled by summer drought.
Fir specimens that originated from the Balkan lineage exhibited higher genetic diversity and more
regular growth dynamics and also appeared to be less sensitive to air pollution during the 1970s.

4. Synthesis. Although the phylogeny of forest trees has largely been neglected in most dendroecological
studies, results here indicate the importance of different post-glacial histories for the growth
sensitivity and adaptability to varying environmental factors. Decision-making under future climate
warming scenarios (for building resilience through forest management) should therefore consider different
phylogenetic origins.

Key-words: air pollution, dendroecology, drought, ecolog

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Informasi Detail

Judul Seri

Journal of Ecology

No. Panggil

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Penerbit

London : British Ecological Society., 2016

Deskripsi Fisik

Journal of Ecology 2016, 104, 716–724

Bahasa

English

ISBN/ISSN

doi: 10.1111/1365-27

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

2016, 104

Subjek

EKOLOGI

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

Versi lain/terkait

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