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Do pheromone trapping always reflect Ips typographus (L.) population level? A study from the Tatra National Park in Poland Cover

Do pheromone trapping always reflect Ips typographus (L.) population level? A study from the Tatra National Park in Poland

Folia Forestalia Polonica
Volume 63 (2021): Issue 1 (March 2021)
By: Wojciech Grodzki  
Open Access
|Mar 2021

Figures & Tables

Figure 1

The area of the Tatra National Park with the location of pheromone traps and the “western” and “eastern” areas affected by wind damage used for the analysis; an example of spots with standing dead trees detected in the subsequent years in a circular zone of 500 m around the trap is shown in the upper left corner
The area of the Tatra National Park with the location of pheromone traps and the “western” and “eastern” areas affected by wind damage used for the analysis; an example of spots with standing dead trees detected in the subsequent years in a circular zone of 500 m around the trap is shown in the upper left corner

Figure 2

Mean area with standing dead trees detected in 500 m circular zone around 23 locations with the traps in the TPN area in individual years (2016 – no data)
Mean area with standing dead trees detected in 500 m circular zone around 23 locations with the traps in the TPN area in individual years (2016 – no data)

Figure 3

The total area with standing dead trees detected in the “western” and “eastern” area of study in individual years (2016 – no data)
The total area with standing dead trees detected in the “western” and “eastern” area of study in individual years (2016 – no data)

Figure 4

Volume of trees infested by bark beetles processed in the entire active protection zone of the Tatra National Park in the years 2010–2019
Volume of trees infested by bark beetles processed in the entire active protection zone of the Tatra National Park in the years 2010–2019

Figure 5

Volume of trees infested by bark beetles processed in the “western” (A) and “eastern” (B) area of study in individual years in 2010–2019
Volume of trees infested by bark beetles processed in the “western” (A) and “eastern” (B) area of study in individual years in 2010–2019

Figure 6

Mean number of I. typographus beetles captured in one trap in individual years, calculated from all 23 traps operated in the TPN
Mean number of I. typographus beetles captured in one trap in individual years, calculated from all 23 traps operated in the TPN

Figure 7

Mean number of I. typographus beetles captured in one trap in individual years, calculated for “western” (5 localities) and “eastern” (5 localities) study area in the TPN
Mean number of I. typographus beetles captured in one trap in individual years, calculated for “western” (5 localities) and “eastern” (5 localities) study area in the TPN

Share of beetles captured in all the 23 pheromone traps in individual years till the end of June and July and correlation coefficients related to the captures from entire trapping period (May–August)_ All the correlations are significant at p < 0_01

YearBeetles captured till the end of JuneBeetles captured till the end of July
share [%]correlation rshare [%]correlation r
201052.60.84587.00.987
201157.30.98086.40.998
201260.40.97585.40.991
201349.80.91676.20.980
201445.80.94277.80.983
201523.60.81579.90.964
201632.20.84676.30.981
201731.80.51971.60.969
201870.20.93385.90.990
201954.70.93581.60.969

Spearman rank correlation coefficients between mean yearly captures per trap and tree mortality

Tree mortality expressed byWestern areaEastern area
rsprsp
Area of spots with dead trees0.714n.s.0.657n.s.
Volume with and of left processed by insects trees0.018n.s.0.055n.s.
Volume with insects of processed trees0.430n.s.0.067n.s.

Area of detected occurrence of new standing dead trees detected in subsequent years in the concentric zones around the 23 locations of pheromone traps in the entire TPN area, using 100, 200 and 500 m radius

Radius of concentric zone (m)Area (ha) with standing dead trees within the zones in the year
201120122013201420152017
1000.000.060.000.000.081.15
2001.300.280.490.350.1012.48
50028.108.3713.573.621.17126.07
DOI: https://doi.org/10.2478/ffp-2021-0004 | Journal eISSN: 2199-5907 | Journal ISSN: 0071-6677
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Language: English
Page range: 36 - 47
Submitted on: Oct 29, 2020
Accepted on: Dec 27, 2020
Published on: Mar 13, 2021
Published by: Forest Research Institute
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
pheromone monitoring,
bark beetles,
protected areas,
mountains,
Tatra
Related subjects:
Life sciences,
Plant science,
Medicine,
Veterinary medicine

© 2021 Wojciech Grodzki, published by Forest Research Institute
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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