Low-frequency noise in δ13C and δ18O tree ring data: A case study of Pinus uncinata in the Spanish Pyrenees
- Publication type:
- Journal article
- Metadata:
-
- Autoren
- Jan Esper
- David C Frank
- Giovanna Battipaglia
- Ulf Buentgen
- Christopher Holert
- Kerstin Treydte
- Rolf Siegwolf
- Matthias Saurer
- Autoren-URL
- https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000284703800001&DestLinkType=FullRecord&DestApp=WOS_CPL
- DOI
- 10.1029/2010GB003772
- eISSN
- 1944-9224
- Externe Identifier
- Clarivate Analytics Document Solution ID: 686NU
- ISSN
- 0886-6236
- Zeitschrift
- GLOBAL BIOGEOCHEMICAL CYCLES
- Artikelnummer
- ARTN GB4018
- Datum der Veröffentlichung
- 2010
- Status
- Published
- Titel
- Low-frequency noise in δ<SUP>13</SUP>C and δ<SUP>18</SUP>O tree ring data: A case study of <i>Pinus uncinata</i> in the Spanish Pyrenees
- Sub types
- Article
- Ausgabe der Zeitschrift
- 24
Data source: Web of Science (Lite)
- Other metadata sources:
-
- Abstract
- <jats:p>Isotopic discrimination measurements in tree rings are becoming increasingly important estimators of past environmental change. Potential biases inherent to these parameters, including age trend and level offset are, however, not well understood. We here perform measurements on a new millennium‐long data set of decadally resolved <jats:italic>δ</jats:italic><jats:sup>18</jats:sup>O and <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C discrimination from 25 high‐elevation pine trees in the Spanish Pyrenees to investigate whether such low‐frequency biases exist and how they alter the long‐term behavior of derived time series. Alignment of the tree ring data by biological age reveals age trends over the first one to four centuries after germination. On average, isotope values change by −0.089‰ <jats:italic>δ</jats:italic><jats:sup>18</jats:sup>O and +0.064‰ <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C per decade over the first 100 years of tree growth. This trend persists into the forth century after germination for <jats:italic>δ</jats:italic><jats:sup>18</jats:sup>O but diminishes to ∼0‰ over the 100–390 year period for <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C. We also find level offsets up to 7‰ <jats:italic>δ</jats:italic><jats:sup>18</jats:sup>O and 3‰ <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C between single trees. Analysis of the shape of age trends reveals negative exponential functions as reasonable choices for detrending of <jats:italic>δ</jats:italic><jats:sup>18</jats:sup>O and (inverted) <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C time series. The detrended isotope chronologies share low‐frequency variance with traditional ring width and density measurements beyond statistical chance, suggesting that the various parameters reflect some of the same environmental forcing. Our results show that <jats:italic>δ</jats:italic><jats:sup>18</jats:sup>O and <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C from these Spanish pines need to be detrended to assess long‐term environmental changes. To evaluate the general applicability of this conclusion, production of (1) well‐replicated, (2) nonpooled, and (3) composite chronologies from other species and regions will be required. Increases in measurement speed and technology will make these tests feasible in the coming years.</jats:p>
- Autoren
- Jan Esper
- David C Frank
- Giovanna Battipaglia
- Ulf Büntgen
- Christopher Holert
- Kerstin Treydte
- Rolf Siegwolf
- Matthias Saurer
- DOI
- 10.1029/2010gb003772
- eISSN
- 1944-9224
- ISSN
- 0886-6236
- Ausgabe der Veröffentlichung
- 4
- Zeitschrift
- Global Biogeochemical Cycles
- Sprache
- en
- Online publication date
- 2010
- Datum der Veröffentlichung
- 2010
- Status
- Published
- Herausgeber
- American Geophysical Union (AGU)
- Herausgeber URL
- http://dx.doi.org/10.1029/2010gb003772
- Datum der Datenerfassung
- 2023
- Titel
- Low‐frequency noise in <i>δ</i><sup>13</sup>C and <i>δ</i><sup>18</sup>O tree ring data: A case study of <i>Pinus uncinata</i> in the Spanish Pyrenees
- Ausgabe der Zeitschrift
- 24
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