Central Library (ISI CUD) - list of publications


The following list contains all information available to the publication.

ŠAMONIL, P. -- KOTÍK, L. -- VAŠÍČKOVÁ, I. Uncertainty in detecting the disturbance history of forest ecosystems using dendrochronology. Dendrochronologia. 2015. v. 35, no. October, p. 51--61. ISSN 1125-7865. URL: http://dx.doi.org/10.1016/j.dendro.2015.05.005

Original name:
Uncertainty in detecting the disturbance history of forest ecosystems using dendrochronology
Czech name:
Written by (author): Ing. Pavel Šamonil, Ph.D.
Lukáš Kotík
Ing. Ivana Vašíčková, Ph.D.
Department:
Central Library
Kind of publication:
article in a professional periodical
Periodical: Dendrochronologia
Nature of article:
paper
Volume no. (year):
35
Periodical number within the volume: October
Year of publication:
2015
Starting page:
51
Up to page: 61
Number of pages:
11
Sub-specification:
UT code by Web of Science:
EID code by Scopus:
Form of publication: printed version
Original language: English
Description in original language: Questions Uncertainty in detecting disturbance histories has long been ignored in dendrochronological studies in forest ecosystems. Our goal was to characterize this uncertainty in relation to the key parameters of forest ecosystems and sample size. In addition, we aimed to provide a method to define uncertainty bounds in specific forest ecosystems with known parameters, and to provide a required (conservative) minimal sample size to achieve a pre-defined level of uncertainty if no actual key forest parameters are known. Location Training data were collected from Žofínský Prales (Czech Republic). Methods We used probability theory and expressed uncertainty as the length (the difference between the upper and lower bounds) of the 95% confidence interval. We studied the uncertainty of (i) the initial growth of trees – if they originated under canopy or in a gap; and (ii) the responses to disturbance events during subsequent growth – on the basis of release detection in the radial growth of trees. These two variables provide different information, which together give a picture of the disturbance history. While initial growth date the existence of a gap in a given decade (recent as well as older gaps are included), release demonstrates the moment of a disturbance event. Results With the help of general mathematical deduction, we have obtained results valid across vegetation types. The length of a confidence interval depends on the sample size, proportion of released trees in a population, as well as on the variability of tree layer features (e.g., crown area of suppressed and released trees). Conclusions Most studies to date have evaluated the initial growth of trees with higher uncertainty than for canopy disturbed area. The length of the 95% confidence interval for detecting initial growth has been rarely shorter than 0.1 (error ± 5%) and has mostly been much longer. To reach 95% confidence interval length of 0.1 (error ± 5%) when detecting the canopy disturbed area, at least 485 tree cores should be evaluated in studied time period, while to reach a 0.05 interval length (error ± 2.5%) at least 1925 tree cores are required. Our approach can be used to find the required sample size in each specific forest ecosystem to achieve pre-defined levels of uncertainty while detecting disturbance history.
Description in English:
Description in Czech:
Key words:
english: Dendroecology, Sample size, Growth release, Probability theory, Forest dynamics, Disturbance regime
Field of result:
GK
EH
Year of submission: 2015
Year of transmission:
RIV identification number:
Used in projects:
Non-project research
URL:
http://dx.doi.org/10.1016/j.dendro.2015.05.005
 
Entry made by:
Last change:
10/08/2018 14:55 (Šárka Novotná)

Evaluation of publication:

1
234
5
        
1
2
3
4
5
bad
 
good
        
uninteresting
 
interesting
Assessed: 0
Average score: -
        
Assessed: 0
Average score: -
1
2
3
4
5
        
1
2
3
4
5
amateur
 
professional
        theoretical
 
practical
Assessed: 0
Average score: -
        
Assessed: 0
Average score: -


Source specification:

Dendrochronologia. Jena: ISSN 1125-7865.

Original name: Dendrochronologia
Czech name:
Written by (author):
Kind of publication:
magazine
ISSN: 1125-7865
Country of publisher: Federal Republic of Germany
Place of publishing: Jena
Publisher:
Elsevier
URL:
http://www.sciencedirect.com/science/journal/11257865
Reviewed magazine:
no
Original language: English
Description in original language:
Description in English:
Description in Czech:
Key words:
czech: dendrochronologie
english: dendrochronolgy
 
Entry made by:
doc. Ing. Hanuš Vavrčík, Ph.D.
Last change:
10/08/2018 14:55 (Šárka Novotná)

Evaluation of publication:

123
4
5
        
1
2
345
bad
 
good
        uninteresting
 
interesting
Assessed: 0
Average score: -
        
Assessed: 0
Average score: -
12
3
45
        
1
2
34
5
amateur
 
professional        
theoretical
 
practical
Assessed: 0
Average score: -
        Assessed: 0
Average score: -