Variation in aboveground net primary production of diverse European Pinus sylvestris populations |
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Authors: | J Oleksyn PB Reich L Rachwal MG Tjoelker P Karolewski |
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Institution: | (1) University of Minnesota, Department of Forest Resources, 1530 Cleveland Ave. N., St. Paul, MN 55108, USA e-mail: oleks001@gold.tc.umn.edu Tel.: +1-612-6243671, Fax: +1-612-6255212, US;(2) Polish Academy of Sciences, Institute of Dendrology, Parkowa 5, 62–035 Kórnik, Poland, PL |
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Abstract: | On range-wide and regional scales, climate and site factors exert control over tree growth, masking the genetic basis of biomass
accumulation and allocation. To determine intrinsic population differences in productivity, aboveground net primary production
(ANPP) was measured in 16-year-old Scots pine from 19 geographically distinct populations grown in a common garden experiment
in central Poland (52°N). The populations originated from the northern (>55°N), central (54–47°N), and southern (<45°N) European
range of Scots pine. We calculated ANPP from aboveground growth components, using diameter-based allometric equations developed
for this site. Average foliage, aboveground woody and total ANPP differed significantly among populations and were greater
for central European populations than for the southern and northern ones. Stocking and total ANPP per tree were positively
correlated to stand aboveground biomass (r
2≥0.71). The relationship between the latitude of seed origin and ANPP was curvilinear and maximum for populations originating
near the planting site (52°N). ANPP declined in populations with increasing longitude eastward from the Atlantic Ocean towards
the center of the continent. This study underscores the potentially large genetic control of ANPP and biomass accumulation
among diverse Scots pine populations.
Received: 3 January 2000 / Accepted: 29 March 2000 |
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Keywords: | Pinus sylvestris Aboveground net primary production Provenance Biomass Allometry |
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