Масові розмноження звичайного соснового пильщика (Diprion Pini L.) у лісовому фонді Житомирської області

Andreieva, O. Yu.; Boliujh, O. G.

doi:10.15421/40290717

Cited by 4 publications

(2 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Outbreaks of foliage-browsing insects often develop in the same stands at certain time intervals [4,23,24]. At the same time, the severity and duration of outbreaks depend on the stand structure, and the consequences of foliage damage depend, to a large extent, on the initial forest health.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Who, Where, When, and How? Challenges for Prediction and Control of Forest Damage

Meshkova

2022

The 3rd International Electronic Conference on Forests—Exploring New Discoveries and New Directions in Forests

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 99%

“…After a recent long-term outbreak of bark beetles in the pine forests of Polissya (Ukrainian forest zone), the area of stands with a high threat of foliage-browsing insect outbreaks decreased [23]. This occurred because bark beetles colonized primarily pure pine stands with a low relative density of stocking [26][27][28].…”

Section: Resultsmentioning

confidence: 99%

Who, Where, When, and How? Challenges for Prediction and Control of Forest Damage

Meshkova

2022

The 3rd International Electronic Conference on Forests—Exploring New Discoveries and New Directions in Forests

View full text Add to dashboard Cite

show abstract

Forest site conditions and the threat for insect outbreaks in the Scots pine stands of Polissya

Andreieva

Goychuk

2020

Folia Forestalia Polonica

Self Cite

View full text Add to dashboard Cite

Scots pine (Pinus sylvestris L.) is the most spread forest tree species in Polissya and the most damaged by foliage browsing and stem insects. The aim of this study was to reveal the changes in the distribution of different forest site conditions for 2010–2019 in Scots pine forests of the selected forestry enterprises of Polissya and possible consequences for the spread of foliage browsing insects. Database of Production Association ‘Ukrderzhlisproekt’ (by 2010 and 2019) was analysed for five State Forest Enterprises (FE) that are located in the Central (Zhytomyr Region) and Western (Rivne and Volyn Regions) Polissya, where the large scale outbreaks of stem pests were registered last decade.The types of forest site conditions were designated in accordance with the Ukrainian typology. Distribution of the forest area by trophotops and hygrotops was evaluated for the forest-covered area, for Scots pine stands, and for pure Scots pine stands in 2010 and in 2019.For 2010–2019, the area of all Scots pine forests and its proportion in the forest-covered area has significantly decreased in the most of analysed forest enterprises. The change for 2010–2019 in the distribution both by the tropho-tops and by hygrotops of the entire forest-covered area, the area of all Scots pine forests and pure pine forests is not statistically significant. However, in assessment year 2019, the proportion of stands in the moist types of forest site conditions slightly increased. It may be the result of the stands’ mortality in the driest sites after an outbreak of bark beetles. A greater decrease in the proportion of Scots pine forest area in the dry poor, fresh poor, and dry relatively poor forest site conditions was found in the western direction. Therefore, the noted decrease in the foci areas of foliage browsing insects in Polissya in 2010–2012 compared to the 2000–2002 could be associated with a decrease in the most preferred stands, namely the poorest and driest types of forest site conditions.

show abstract

Population Indicators of Sawflies and Concomitant Species of Needle-Eating Species in the Stands of the Prytiasmyn Ridge

PUZRINA¹,

PEREVIZNYK²,

TOKARIEVA³

et al. 2022

Ukr. j. for. wood sci.

View full text Add to dashboard Cite

Due to the consequences of climate change, namely a decrease in the groundwater level, there is a massive weakening of Scots pine stands in the forests of Ukraine. Against the background of dynamic weakening of trees, annual warm winters, the establishment of warm, sunny, and dry weather in spring contribute to the spread of needle-eating pests, especially sawflies. The purpose of this study was to clarify the species composition and biological features of certain species of needle-eating insects of the Prytiasmyn Ridge and the degree of threat to plantings from needle-eating insects, namely from sawflies and related species. At the stage of reconnaissance survey of pine stands, the method of qualitative and quantitative assessment of sawflies and related species of needle-eating insects was tested. During the survey of plantings of the Prytiasmyn Ridge, Defoliating insects of the following species were found: Acantholyda erythrocephala, Acantholyda posticalis, Dendrolimus pini, Panolis flammea, Sphinx pinastri isolated, most pine stands predominate in number Diprion pini and its concomitant species Gilpinia frutetorum and Gilpinia virens. The provides results of observations on the population of Diprion pini and concomitant species Gilpinia frutetorum and Gilpinia virens in pine stands with determination of distribution, phenological and biological features. As a result of the survey of stands inhabited by needle-eating insects, it was established in which phase of the outbreak the pest population is, to which categories the breeding centres and biological features of Diprion pini and related species under these conditions belong. The population indicators of the common pine sawfly Diprion pini and concomitant species in the stands of the Prytiasmyn ridge of the Cherkasy Oblast were evaluated. It was found that the number of these species is increasing, e.g., in 2021 the average number of viable cocoons of Diprion pini females was 21%, and the density of cocoons in the detritus (or forest floor) was 0.53 units·m-2 compared to the indicators of 2020 of 12% and 0.19 units·m-2 , respectively. Similarly, the number of concomitant species Gilpinia frutetorum and Gilpinia virens is increasing, the average density of cocoons in the detritus (or forest floor) of which was 1.39 units·m-2 in 2020, and 1.87 units·m-2 in 2021. As a result of the reconnaissance and detailed surveys, foci of the needle-eating insect complex were found with a total area of 128.0 ha, the determined defoliation rate of the crown was from 30% to 50%. The obtained accounting data allow assessing the potential for the reproduction of populations of Defoliating insects and indicate the need for further monitoring observations in the pine stands of the Prytiasmyn ridge

show abstract

Масові розмноження звичайного соснового пильщика (Diprion Pini L.) у лісовому фонді Житомирської області

Cited by 4 publications

References 12 publications

Who, Where, When, and How? Challenges for Prediction and Control of Forest Damage

Who, Where, When, and How? Challenges for Prediction and Control of Forest Damage

Forest site conditions and the threat for insect outbreaks in the Scots pine stands of Polissya

Population Indicators of Sawflies and Concomitant Species of Needle-Eating Species in the Stands of the Prytiasmyn Ridge

Contact Info

Product

Resources

About