Temperature and Tree Size Explain the Mean Time to Fall of Dead Standing Trees across Large Scales
Gärtner, Antje LU
; Jönsson, Anna Maria
LU
; Metcalfe, Daniel B.
LU
; Pugh, Thomas A.M.
LU
; Tagesson, Torbern
LU
and Ahlström, Anders
LU
(2023)
In Forests
14(5).
- Abstract
- Abstract
Dead standing trees (DSTs) generally decompose slower than wood in contact with the forest floor. In many regions, DSTs are being created at an increasing rate due to accelerating tree mortality caused by climate change. Therefore, factors determining DST fall are crucial for predicting dead wood turnover time but remain poorly constrained. Here, we conduct a re-analysis of published DST fall data to provide standardized information on the mean time to fall (MTF) of DSTs across biomes. We used multiple linear regression to test covariates considered important for DST fall, while controlling for mortality and management effects. DSTs of species killed by fire, insects and other causes stood on average for 48, 13 and 19 years,... (More) - Abstract
Dead standing trees (DSTs) generally decompose slower than wood in contact with the forest floor. In many regions, DSTs are being created at an increasing rate due to accelerating tree mortality caused by climate change. Therefore, factors determining DST fall are crucial for predicting dead wood turnover time but remain poorly constrained. Here, we conduct a re-analysis of published DST fall data to provide standardized information on the mean time to fall (MTF) of DSTs across biomes. We used multiple linear regression to test covariates considered important for DST fall, while controlling for mortality and management effects. DSTs of species killed by fire, insects and other causes stood on average for 48, 13 and 19 years, but MTF calculations were sensitive to how tree size was accounted for. Species’ MTFs differed significantly between DSTs killed by fire and other causes, between coniferous and broadleaved plant functional types (PFTs) and between managed and unmanaged sites, but management did not explain MTFs when we distinguished by mortality cause. Mean annual temperature (MAT) negatively affected MTFs, whereas larger tree size or being coniferous caused DSTs to stand longer. The most important explanatory variables were MAT and tree size, with minor contributions of management and plant functional type depending on mortality cause. Our results provide a basis to improve the representation of dead wood decomposition in carbon cycle assessments. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/bffec11c-5104-4795-ae46-c17ccebb8b47
- author
- Gärtner, Antje
LU
; Jönsson, Anna Maria
LU
; Metcalfe, Daniel B.
LU
; Pugh, Thomas A.M.
LU
; Tagesson, Torbern
LU
and Ahlström, Anders
LU
- organization
- publishing date
- 2023-05-15
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- standing dead wood, snag fall, woody decomposition, literature review;, re-analysis
- in
- Forests
- volume
- 14
- issue
- 5
- publisher
- MDPI AG
- external identifiers
-
- scopus:85160696452
- ISSN
- 1999-4907
- DOI
- 10.3390/f14051017
- language
- English
- LU publication?
- yes
- id
- bffec11c-5104-4795-ae46-c17ccebb8b47
- date added to LUP
- 2023-05-22 11:15:46
- date last changed
- 2023-07-30 04:01:32
@article{bffec11c-5104-4795-ae46-c17ccebb8b47,
abstract = {{Abstract<br/>Dead standing trees (DSTs) generally decompose slower than wood in contact with the forest floor. In many regions, DSTs are being created at an increasing rate due to accelerating tree mortality caused by climate change. Therefore, factors determining DST fall are crucial for predicting dead wood turnover time but remain poorly constrained. Here, we conduct a re-analysis of published DST fall data to provide standardized information on the mean time to fall (MTF) of DSTs across biomes. We used multiple linear regression to test covariates considered important for DST fall, while controlling for mortality and management effects. DSTs of species killed by fire, insects and other causes stood on average for 48, 13 and 19 years, but MTF calculations were sensitive to how tree size was accounted for. Species’ MTFs differed significantly between DSTs killed by fire and other causes, between coniferous and broadleaved plant functional types (PFTs) and between managed and unmanaged sites, but management did not explain MTFs when we distinguished by mortality cause. Mean annual temperature (MAT) negatively affected MTFs, whereas larger tree size or being coniferous caused DSTs to stand longer. The most important explanatory variables were MAT and tree size, with minor contributions of management and plant functional type depending on mortality cause. Our results provide a basis to improve the representation of dead wood decomposition in carbon cycle assessments.}},
author = {{Gärtner, Antje and Jönsson, Anna Maria and Metcalfe, Daniel B. and Pugh, Thomas A.M. and Tagesson, Torbern and Ahlström, Anders}},
issn = {{1999-4907}},
keywords = {{standing dead wood; snag fall; woody decomposition; literature review;; re-analysis}},
language = {{eng}},
month = {{05}},
number = {{5}},
publisher = {{MDPI AG}},
series = {{Forests}},
title = {{Temperature and Tree Size Explain the Mean Time to Fall of Dead Standing Trees across Large Scales}},
url = {{http://dx.doi.org/10.3390/f14051017}},
doi = {{10.3390/f14051017}},
volume = {{14}},
year = {{2023}},
}