In:
Plant, Cell & Environment, Wiley, Vol. 41, No. 12 ( 2018-12), p. 2899-2914
Abstract:
Tree‐ring stable isotope ratios have become an important paleoclimate proxy in temperate forests that are often characterized by heterogeneous stand structures. As the effects of stand dynamics on carbon (δ 13 C) and oxygen isotope ratios (δ 18 O) in tree rings are not well explored, we investigated trends and offsets in δ 18 O and δ 13 C of Picea abies and Fagus sylvatica in relation to tree age, size, and distance to the upper canopy at seven temperate sites across Europe. We found positive trends in both stable isotopes ratios; however, the observed slopes in δ 18 O are less steep and much more consistent between trees of different ages and sizes compared with δ 13 C. Thus, we conclude that for shade‐tolerant species, δ 18 O should be in principle the superior proxy for climate reconstructions.
Type of Medium:
Online Resource
ISSN:
0140-7791
,
1365-3040
Language:
English
Publisher:
Wiley
Publication Date:
2018
detail.hit.zdb_id:
391893-2
detail.hit.zdb_id:
2020843-1
SSG:
12
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