Combining Tree-Ring Width and Density to Separate the Effects
of Climate Variation and Insect Defoliation

J 2023

Combining Tree-Ring Width and Density to Separate the Effects of Climate Variation and Insect Defoliation

KUNZ, Marcel, Jan ESPER, Eileen KUHL, Lea SCHNEIDER, Ulf BÜNTGEN et. al.

Basic information

Original name

Combining Tree-Ring Width and Density to Separate the Effects of Climate Variation and Insect Defoliation

Authors

KUNZ, Marcel (guarantor), Jan ESPER, Eileen KUHL, Lea SCHNEIDER, Ulf BÜNTGEN (276 Germany, belonging to the institution) and Claudia HARTL

Edition

Forests, MDPI, 2023, 1999-4907

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10510 Climatic research

Country of publisher

Switzerland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 2.900 in 2022

RIV identification code

RIV/00216224:14310/23:00131401

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.3390/f14071478

UT WoS

001036107200001

Keywords in English

climate change; dendrochronology; European Alps; global change ecology; insect outbreaks; tree rings; extreme event detection

Abstract

V originále

Though frequently used in dendroclimatology, European larch (Larix decidua Mill.) is regularly defoliated by mass outbreaks of the larch budmoth (Zeiraphera griseana Hb., LBM). The near-cyclic growth depressions are unrelated to but possibly coincide with cold summers, which challenges signal detection on interannual timescales. LBM defoliation events cause sharp maximum latewood density declines and irregular earlywood/latewood ratios in the outbreak year, followed by one or two anomalously narrow rings. Here, we present a process-based method integrating these diverse response patterns to identify and distinguish LBM-related signals from climate-induced deviations. Application to larch sites along elevational transects in the Swiss Alps reveals the algorithm to perform better than existing extreme event detection methods, though our approach enables additional differentiation between insect- and climate-induced signatures. The new process-based multi-parameter algorithm is a suitable tool to identify different causes of growth disturbances and will therefore help to improve both tree-ring-based climate and insect defoliation reconstructions.

Citovat

KUNZ, Marcel, Jan ESPER, Eileen KUHL, Lea SCHNEIDER, Ulf BÜNTGEN and Claudia HARTL. Combining Tree-Ring Width and Density to Separate the Effects of Climate Variation and Insect Defoliation. Forests. MDPI, 2023, vol. 14, No 7, p. 1-15. ISSN 1999-4907. Available from: https://dx.doi.org/10.3390/f14071478.

@article{2301729,
   author = {Kunz, Marcel and Esper, Jan and Kuhl, Eileen and Schneider, Lea and Büntgen, Ulf and Hartl, Claudia},
   article_number = {7},
   doi = {http://dx.doi.org/10.3390/f14071478},
   keywords = {climate change; dendrochronology; European Alps; global change ecology; insect outbreaks; tree rings; extreme event detection},
   language = {eng},
   issn = {1999-4907},
   journal = {Forests},
   title = {Combining Tree-Ring Width and Density to Separate the Effects of Climate Variation and Insect Defoliation},
   url = {https://doi.org/10.3390/f14071478},
   volume = {14},
   year = {2023}
}

TY  - JOUR
ID  - 2301729
AU  - Kunz, Marcel - Esper, Jan - Kuhl, Eileen - Schneider, Lea - Büntgen, Ulf - Hartl, Claudia
PY  - 2023
TI  - Combining Tree-Ring Width and Density to Separate the Effects of Climate Variation and Insect Defoliation
JF  - Forests
VL  - 14
IS  - 7
SP  - 1-15
EP  - 1-15
PB  - MDPI
SN  - 19994907
KW  - climate change
KW  - dendrochronology
KW  - European Alps
KW  - global change ecology
KW  - insect outbreaks
KW  - tree rings
KW  - extreme event detection
UR  - https://doi.org/10.3390/f14071478
N2  - Though frequently used in dendroclimatology, European larch (Larix decidua Mill.) is regularly defoliated by mass outbreaks of the larch budmoth (Zeiraphera griseana Hb., LBM). The near-cyclic growth depressions are unrelated to but possibly coincide with cold summers, which challenges signal detection on interannual timescales. LBM defoliation events cause sharp maximum latewood density declines and irregular earlywood/latewood ratios in the outbreak year, followed by one or two anomalously narrow rings. Here, we present a process-based method integrating these diverse response patterns to identify and distinguish LBM-related signals from climate-induced deviations. Application to larch sites along elevational transects in the Swiss Alps reveals the algorithm to perform better than existing extreme event detection methods, though our approach enables additional differentiation between insect- and climate-induced signatures. The new process-based multi-parameter algorithm is a suitable tool to identify different causes of growth disturbances and will therefore help to improve both tree-ring-based climate and insect defoliation reconstructions.
ER  -

KUNZ, Marcel, Jan ESPER, Eileen KUHL, Lea SCHNEIDER, Ulf BÜNTGEN and Claudia HARTL. Combining Tree-Ring Width and Density to Separate the Effects of Climate Variation and Insect Defoliation. \textit{Forests}. MDPI, 2023, vol.~14, No~7, p.~1-15. ISSN~1999-4907. Available from: https://dx.doi.org/10.3390/f14071478.

Detailed Information on Publication Record