scholarly journals GIS-based prediction of the foliage browsing insects' outbreaks in the pine stands of the SE "Kreminske FHE"

2017 ◽  
pp. 112-118 ◽  
Author(s):  
V. Meshkova ◽  
O. Borysenko
Keyword(s):  
Stocking Density ◽  
Stand Density ◽  
State Enterprise ◽  
Forest Plot ◽  
Forest Site ◽  
Pine Sawfly ◽  
Pine Sawflies ◽  
Pine Stands ◽  
European Pine Sawfly ◽  
High Threat

  To improve the detection and prevention of foliage browsing insects' outbreaks it is very important to reveal the forest plots, which are the most favorable for these pests. The aim of this research was to predict using GIS technologies the spatial dynamics of foliage browsing insects' outbreaks in the pine stands of the State Enterprise "Kreminske FHE" (Luhansk region). Forest inventory databases of Production Association "Ukrderzhlisproekt" were analyzed for the SE "Kreminske FHE" as of 2001 and 2011. Rating of forest plots preferences for common pine sawfly (Diprion pini L.) and European pine sawfly (Neodiprion sertifer Geoffr.) considered the type of forest site conditions, age of stand, density of stocking, and the part of pine in the stand composition. If forest plot bordered with clear-cut, then 1 point was added to the general score of the threat. It was shown, that the area with high threat of European pine sawfly and common pine sawfly outbreaks for 2001–2011 increased in the forest fund of the SE "Kreminske FHE" by 702.8 and 2004.2 hectares respectively. The part of foci area made up 27.5 and 32 % from forest fund area, 42.5 % and 49.5 % from pine stands area for European pine sawfly and common pine sawfly respectively. The areas of pine sawflies foci increased mainly in result of decrease the stocking density of pine stands and increase the number of plots which border with clear-cuts. The survey for pine sawflies is recommended to carry out first of all in the plots with high threat of foci appearance.

Effects of Temperatures of Rearing on Reproduction of Aptesis basizona (Grav.) (Hymenoptera: Ichneumonidae)

1961 ◽  
Vol 93 (9) ◽  
pp. 799-801 ◽  
Author(s):  
Thelma Finlayson
Keyword(s):  
Cold Storage ◽  
Reproductive Capacity ◽  
Neodiprion Sertifer ◽  
Immature Stages ◽  
Pine Sawfly ◽  
Pine Sawflies ◽  
European Pine Sawfly

Aptesis basizona (Grav.), a parasite of pine sawflies in Europe, was propagated at Belleville, Ont. (Green, 1938) for release against the European spruce sawfly, Diprion hercyniae (Htg.), the European pine sawfly, Neodiprion sertifer (Geoff.) and other Diprionidae. Development of the insects in the laboratory was allowed to continue until feeding was completed and cocoons were spun, and was then retarded by placing the insects in cold storage pending shipment to release areas. Frequently stock for propagation was incubated after a period of cold storage, and occasionally the schedule was interrupted by decreases in the reproductive capacity of the adults. It seemed that there was some relationship between the fertility of the adults and the temperatures at which the immature stages were held, both while feeding and after they had reached the fully-fed stage. Experiments were initiated to investigate this hypothesis.

scholarly journals Diprion pini L. (Hymenoptera, Symphyta, Diprionidae) population dynamics in the Low Dnieper region

2019 ◽  
Vol 61 (1) ◽  
pp. 22-29 ◽  
Author(s):  
Valentyna Meshkova ◽  
Serhii Nazarenko ◽  
Maryna Kolienkina
Keyword(s):  
Regional Scale ◽  
Steppe Zone ◽  
Graphical Analysis ◽  
Diprion Pini ◽  
Pine Sawfly ◽  
Pine Sawflies ◽  
Two Generations ◽  
The Sixties ◽  
Analysis Of Dynamics ◽  
European Pine Sawfly

Abstract Pine sawflies (Hymenoptera, Symphyta, Diprionidae) are the most spread foliage browsing insects of pine forests in Europe, especially monovoltinous European pine sawfly Neodiprion sertifer (Geoffroy, 1785) and common pine sawfly Diprion pini (Linnaeus, 1758), which develops in one or two generations per year depending on weather. The outbreaks of both pine sawflies are the most frequent and intensive in the Steppe zone of Ukraine, especially in the Low Dnieper region, where pine forest (Pinus sylvestris Linnaeus and Pinus pallasiana D. Don) was planted on moving sands in the sixties of the 20th century. This research is aimed at the evaluation of the parameters for D. pini outbreak dynamics in the Low Dnieper region. Outbreak severity, specific foci area and mean score of stand threat by D. pini were evaluated from the regional statistical reports. In the regional scale for 1979–2017, notable outbreaks of D. pini were registered in 1982, 1993, 2002, 2006 and 2017. An interval between maximums was from 4 to 11 years, in average 9 years. The growth of foci area in 1979–1998 as compared to 1999–2017 as well as correlation between pine stand area and annual area of this pest’s foci in different forests was not statistically significant. Graphical analysis of dynamics of D. pini focal area for 2010–2017 was done based on individual threat levels. Our study confirms the fact of three outbreaks for this period in three forest and hunting enterprises (FHE), two outbreaks in one FHE and one outbreak in one FHE. An interval between the outbreaks makes three or six years. The causes of such shortening of interval are discussed.

Captures of Male European Pine Sawflies (Hymenoptera: Diprionidae) in Pheromone-Baited Traps in Kentucky

2001 ◽  
Vol 36 (1) ◽  
pp. 67-73 ◽  
Author(s):  
L. K. Rieske ◽  
L. Townsend ◽  
O. Anderbrant ◽  
Erik Hedenström ◽  
Hans-Erik Högberg
Keyword(s):  
Time Of Day ◽  
Flight Activity ◽  
Neodiprion Sertifer ◽  
Peak Activity ◽  
Trap Catch ◽  
Sticky Traps ◽  
Pine Sawfly ◽  
Pine Sawflies ◽  
Baited Traps ◽  
European Pine Sawfly

Using sticky traps baited with (2S, 3S, 7S)-3,7-dimethyl-2-pentadecyl acetate, we assessed the seasonal and diurnal flight activity of the European pine sawfly, Neodiprion sertifer (Geoffrey), in Fayette, Madison, and Livingston counties in Kentucky. At each site, two replicates of individual sticky traps were baited and suspended about 1 m high and spaced at least 20 m apart. Trap catch was affected by site (P = 0.001). A total of 326 European pine sawfly males were captured at the Fayette Co. site during the period 18 September to 12 November, representing 7% of the season total. No males of this species were caught at the other sites. During peak flight activity (1 to 15 October), we monitored traps at 2.5-h intervals over 4 d to determine diurnal flight patterns. Flight activity began after 1100 h and ceased by 1830 h, and was significantly affected by time of day. European pine sawfly flight activity was greatest between 1330 and 1830 h. We captured over 5,200 male sawflies at all three sites, with peak activity occurring in May, July, September and October.

Monitoring the European pine sawfly with pheromone traps in maturing Scots pine stands

2006 ◽  
Vol 8 (1) ◽  
pp. 7-15 ◽  
Author(s):  
Paivi Lyytikainen-Saarenmaa ◽  
Martti Varama ◽  
Olle Anderbrant ◽  
Mikko Kukkola ◽  
Anna-Maija Kokkonen ◽  
...  
Keyword(s):  
Scots Pine ◽  
Pheromone Traps ◽  
Pine Sawfly ◽  
Pine Stands ◽  
European Pine Sawfly ◽  
Scots Pine Stands

scholarly journals Parameters of Pinus sylvestris health condition and Ips acuminatus population in pure and mixed stands of Sumy region

2020 ◽  
pp. 131-140
Author(s):  
Valentyna Meshkova ◽  
Ivan Bobrov
Keyword(s):  
Scots Pine ◽  
Bark Beetles ◽  
Forest Health ◽  
Health Condition ◽  
State Enterprise ◽  
Forest Steppe ◽  
Population Parameters ◽  
Mixed Stands ◽  
Pine Stands ◽  
Scots Pine Stands

Outbreaks of bark beetles have increased in recent years in various regions. Pine engraver beetle (Ips acuminatus (Gyllenhal, 1827); Coleoptera: Curculionidae: Scolytinae) is most common in the pine forests of many European countries. Research on its biology and spread carried out in different natural conditions, phases of pest outbreak and considered various parameters to characterize the population of the pest and forest health condition. The aim of the research was to compare the health condition of Scots pine stands and population parameters of I. acuminatus in its two generations in pure and mixed stands in Polissya and Forest-steppe parts of Sumy region. Research was carried out in 2017 in the pure Scots pine stands and mixed stands with Scots pine and other forest species in Polissya (State Enterprise "Seredyno-Budsky Agroforest Economy"; State Enterprise "Seredyno-Budsky Forest Economy") and Forest-steppe parts (State Enterprise "Velykopysarivske Agroforest Economy"; State Enterprise "Okhtyrske Forest Economy") of Sumy region at 26 sample plots. In sample plots, parameters of forest health condition and bark beetle population were assessed in June and in September, after completion of development of spring and summer generation of I. acuminatus.  By most of the parameters assessed, significant differences between sample plots in Forest-Steppe and Polissya parts of Sumy region were not found. In pure Scots pine stands the mean area of bark beetles’ foci and bark beetles’ production were larger in Forest-steppe in June, and the density of Ips acuminatus nuptial chambers in June and September. In pure Scots pine stands the area of I. acuminatus focus, the number of colonized trees, the proportion of recently died trees, health condition indices, the density of egg galleries and nuptial chambers as well as young beetle’s production increased from June to September. In mixed stands the focus area, the number of colonized trees and health condition index increased insignificantly, and population parameters of I. acuminatus decreased from June to September. Pure Scots pine stands changed the health condition from "severely weakened" to "drying up" in three months, and mixed ones remained in the "weakened" category. In pure pine stands, the density of egg galleries and beetles of the young generation increased for three months from the lower limit of a moderate level to a high level, the density of nuptial chambers – from low to a high level. In mixed stands, all population parameters of I. acuminatus correspond to a low population level. The parameters characterizing the investigated foci of I. acuminatus in the Sumy region significantly correlated with the participation of pine in the stand composition, and in September the correlation is closer than in June. The data obtained indicate the feasibility of creating predominantly mixed pine stands.

Monitoring European pine sawfly population densities with pheromone traps in young pine plantations

1999 ◽  
Vol 124 (2-3) ◽  
pp. 113-121 ◽  
Author(s):  
Päivi Lyytikäinen-Saarenmaa ◽  
Olle Anderbrant ◽  
Jan Löfqvist ◽  
Erik Hedenström ◽  
Hans-Erik Högberg
Keyword(s):  
Pine Plantations ◽  
Pheromone Traps ◽  
Population Densities ◽  
Pine Sawfly ◽  
European Pine Sawfly

Altered polyphenol metabolism in the foliage of Pinus sylvestris associated with European pine sawfly attack

1968 ◽  
Vol 46 (5) ◽  
pp. 724-725 ◽  
Author(s):  
Bart A. Thielges
Keyword(s):  
Pinus Sylvestris ◽  
Unknown Compound ◽  
Pine Sawfly ◽  
European Pine Sawfly ◽  
General Response

Modified polyphenol metabolism in Pinus sylvestris was correlated with European pine sawfly attack. The unknown compound was not restricted to damaged tissue, indicating a more general response to injury.

scholarly journals A PRACTICAL MEASURE OF STOCK DENSITY IN WHITE AND RED PINE STANDS

1943 ◽  
Vol 19 (2) ◽  
pp. 108-118 ◽  
Author(s):  
G. A. Mulloy
Keyword(s):  
Line Graph ◽  
Stand Density ◽  
Average Diameter ◽  
Practical Application ◽  
White Pine ◽  
Age Classes ◽  
Straight Line ◽  
Pine Stands ◽  
Stand Density Index ◽  
Practical Measure

The findings of L. H. Reineke that a number of trees per acre on average diameter plotted on double logarithmic paper provides a straight line graph whose slope remains constant for all sites, age-classes and most species are checked against twenty years' record of sample plot data for red and white pine stands. The use of stand density index based on this principle in thinning technique and in forest management is developed.The practical application of these findings is shown. All that is necessary is to estimate the average diameter of the stand. The spacing for optimum development is then fixed.

scholarly journals Effect of Day or Night and Cumulative Shift Time on the Frequency of Tree Damage during CTL Harvesting in Various Stand Conditions

Forests ◽  
2020 ◽  
Vol 11 (7) ◽  
pp. 743 ◽  
Author(s):  
Mariusz Bembenek ◽  
Petros A. Tsioras ◽  
Zbigniew Karaszewski ◽  
Bogna Zawieja ◽  
Ewa Bakinowska ◽  
...  
Keyword(s):  
Forest Management ◽  
Human Factor ◽  
Stand Density ◽  
Age Classes ◽  
Tree Damage ◽  
Thinning Intensity ◽  
Thinning Operations ◽  
Work Shifts ◽  
Pine Stands ◽  
Stand Conditions

Thinning is one of the most important tools of forest management, although thinning operations require the use of machines which ultimately cause damage to the remaining stand. The level of damage largely depends on the human factor, and a tired, less focused operator will create more injuries in the forest. With this in mind, the objectives of this research were to find out whether the probability of tree damage caused by an operator is also affected by: (1) the part of the day (dawn/day/dusk/night), and (2) the cumulative shift time. The research was carried out in pure pine stands of different ages, density and thinning intensities. Sample plots were selected that had an increasing number of trees per hectare and growing thinning intensities were applied. The same Komatsu 931.1 harvester was used for the thinning operations in each stand. In all the age classes combined, 5.41% of the remaining trees were wounded. There was a significant influence of the part of the day on the percentage of damaged trees, which was positively correlated with the cumulative shift time. Stand conditions, such as age class and stand density, as well as thinning characteristics—thinning intensity, number of harvested trees and productivity—have different effects on the distribution of damage intensity and on probability. The results may improve the planning of operators’ work shifts in forests of various ages and densities, allowing harvester productivity to be maintained while at the same time inflicting the lowest possible level of damage.

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