Assessment of pine weevil numbers on clear-cut and forest sites with shelter boards and pitfall traps

1997 ◽  
Vol 70 (4) ◽  
pp. 68-72 ◽  
Author(s):  
H. H. Eidmann
Keyword(s):  
Pitfall Traps ◽  
Pine Weevil ◽  
Clear Cut ◽  
Forest Sites

scholarly journals Simple Is Best: Pine Twigs Are Better Than Artificial Lures for Trapping of Pine Weevils in Pitfall Traps

Forests ◽  
2019 ◽  
Vol 10 (8) ◽  
pp. 642 ◽  
Author(s):  
Michal Lalík ◽  
Jaroslav Holuša ◽  
Juraj Galko ◽  
Karolína Resnerová ◽  
Andrej Kunca ◽  
...  
Keyword(s):  
Cost Effective ◽  
Mass Trapping ◽  
Pitfall Traps ◽  
Hylobius Abietis ◽  
Pine Weevil ◽  
Clear Cut ◽  
Alpha Pinene ◽  
Pine Weevils ◽  
Spruce Stands ◽  
Better Than

The large pine weevil Hylobius abietis (Linnaeus 1758) is the main pest of coniferous seedlings in Europe and causes substantial damage in areas that have been clear-cut or otherwise disturbed. We compared the efficacy of different attractants for the capture of H. abietis adults in white pitfall traps. The field experiment was performed from mid-April to the end of August 2018 at six plots in Central Europe located in spruce stands that had been clear-cut. At each plot, we compared five attractants: one pine twig with ethanol, Hylodor, alpha-pinene + ethanol, turpentine oil and ethanol (separated), and turpentine oil + ethanol (not separated). Traps without attractant served as a control. Six traps for each attractant or control were distributed at each plot. Of the total number of H. abietis adults trapped, 43.3%, 20.5%, 17.9%, 9.8%, 8.5% and 0.5% were captured in traps with pine twigs with ethanol, alpha-pinene, Hylodor, turpentine, oil + ethanol (separated), turpentine oil + ethanol (combined), and no attractant, respectively. The bottom of each trap contained propylene glycol to kill and preserve beetles. The small number of beetles captured in the control traps confirms that the propylene glycol:water mixture did not influence the trapping of H. abietis. The use of pitfall traps with a suitable attractant (especially pine twigs and ethanol) should be useful for monitoring of H. abietis, because it is simple and cost-effective. The use of such pitfall traps to control H. abietis by mass trapping would require 50 to 100 traps per ha.

The effects of fire and stand age on seedling establishment of Pulsatilla patens in a pine-dominated boreal forest

2005 ◽  
Vol 83 (6) ◽  
pp. 688-693 ◽  
Author(s):  
Rein Kalamees ◽  
Kersti Püssa ◽  
Ilkka Vanha-Majamaa ◽  
Kristjan Zobel
Keyword(s):  
Boreal Forest ◽  
Stand Age ◽  
Light Conditions ◽  
Clear Cut ◽  
Forest Sites ◽  
Tree Layer ◽  
Negative Effect ◽  
Scots Pine Forest ◽  
Pulsatilla Patens ◽  
Successional Age

Successful management of disturbance-related endangered plant species requires thorough knowledge concerning their recruitment ecology. Pulsatilla patens (L.) Mill. is found in northern European forests that in the past have been subjected to a periodic wildfire regime and, thus, is supposedly adapted to corresponding changes in forest light conditions and thickness of the moss and litter layers. We tested whether this is true in a field experiment where seeds of P. patens were sown in experimentally burned and control boreal Scots pine forest sites of different successional age (clear-cut, 30 years old, 45 years old). The germination and early establishment of P. patens was enhanced in the experimentally burned conditions and was more successful in younger successional stages. On the other hand, in sites with a tree layer, the germination of P. patens was better in relatively darker areas, suggesting that the negative effect of successional age is probably not a result of changing light conditions, but rather a result of thicker moss and litter layers in the later successional stages.Key words: boreal forest, germination, forest fire, litter layer, Pulsatilla patens, seed sowing.

Effects of a recent wildfire and clearcuts on ground-dwelling boreal forest spider assemblages

2005 ◽  
Vol 35 (11) ◽  
pp. 2575-2588 ◽  
Author(s):  
Maxim Larrivée ◽  
Lenore Fahrig ◽  
Pierre Drapeau
Keyword(s):  
Boreal Forest ◽  
Black Spruce ◽  
Species Turnover ◽  
Pitfall Traps ◽  
Gamma Diversity ◽  
Clear Cut ◽  
Forestry Practices ◽  
Disturbed Forest ◽  
Catch Rates ◽  
Web Building

Ground-dwelling spider (Araneae) assemblages were compared between recent clearcuts and burned black spruce (Picea mariana (Mill.) BSP) forests. Spiders were sampled using pitfall traps placed in 6 recently burned sites, 6 recently clear-cut sites, and 6 undisturbed sites in eastern Quebec, Canada. A total of 2935 individuals from 95 spider species were identified. Catch rates for hunting spiders were significantly higher in the clear-cut stands than in the burned stands, but between-stand species turnover of hunting spiders was twice as high in the burned stands as in the clear-cut stands. Web-building spiders had similar catch rates in the three stand types, but had the highest species turnover and gamma diversity in the undisturbed sites. Correspondence analysis showed that the composition of the spider assemblages varied among the three types of stands. Spider assemblages found in clearcuts were associated with environmental variables reflecting dry, open, disturbed forest floor, while assemblages found in burned stands were correlated with high percentages of shrub cover and dried moss–lichen substrate and deeper litter. We conclude that ground-living spider assemblages in boreal forest respond very differently to clearcuts and fires and we suggest modifications to present forestry practices to create disturbances that are more similar to wildfires.

scholarly journals Group selection harvesting supports diversity of forest specialist carabids

2019 ◽  
Vol 2 ◽  
Author(s):  
Bela Tóthmérész ◽  
Tibor Magura ◽  
Szabolcs Mizser ◽  
David D. Nagy
Keyword(s):  
Forest Management ◽  
Group Selection ◽  
Environmental Changes ◽  
Control Area ◽  
Oak Forests ◽  
Pitfall Traps ◽  
Clear Cut ◽  
Clear Cutting ◽  
Specialist Species ◽  
Selection Harvesting

Increased fragmentation and considerable environmental changes in native forests caused by the timber-oriented forest managements are threatening the biodiversity of forests. As a remediation, uneven-aged approach is recommended during forest management, because this is less intensive and could be less harmful than even-aged practices. We tested the effects of clear-cutting (as even-aged method) and group selection harvesting (as uneven-aged method) on carabids in lowland oak forests. Pitfall traps and litter sifting were used during the study. We found that the total number of species was significantly higher in the gaps harvested by group selection and in the clear-cut than in the mature forests (control area). The species richness of forest specialist species was significantly lower in the clear-cuts than in the other area. Our findings demonstrated that the conventional clear-cutting caused a decrease in the number of forest specialist species. Therefore, group selection method should be favoured during forest management to maintain diversity.

Limiting White Pine Weevil Attacks by Side Shade

1985 ◽  
Vol 61 (1) ◽  
pp. 5-9 ◽  
Author(s):  
W. M. Stiell ◽  
A. B. Berry
Keyword(s):  
Early Spring ◽  
Height Growth ◽  
White Pine ◽  
Direct Sunlight ◽  
Pissodes Strobi ◽  
Pine Weevil ◽  
Clear Cut ◽  
Stand Conversion ◽  
Stand Height ◽  
White Pine Weevil

An experiment to limit damage by the white pine weevil (Pissodes strobi Peck), using strip-cuts aligned north-south to control the number of hours of direct sunlight falling on seedlings of white pine (Pinus strobus L.) planted on the strips, was carried out from 1964 to 1982 at the Petawawa National Forestry Institute. Strip widths (in relation to stand height) that would admit nominal values of 25, 50, 75, and 100% of daily full light were employed, and the experiment conducted in a pine-mixedwood and a mixed hardwood stand. Percentages of trees attacked by the weevil were clearly stratified by treatment in the mixed-wood stand, increasing from the narrow (25% light) to the open (100% light) strips. It was concluded that clear-cut strips in conifers or mixedwoods, where the ratio of strip width to stand height is in the range of 0.66 to 1.00 (admitting a nominal 50 to 75% of full light), will allow adequate numbers of white pine to reach a height of one log-length (5.2 m) free from weevil damage. However, rate of height growth will be diminished. This approach, which holds promise for natural regeneration of the pine or stand conversion by planting, is not effective in hardwood stands because leafless trees will not provide the necessary side shade when adult weevils are active in early spring.

Effects of preparation of clear‐cut forest sites on the soil mycobiota with consequences for Scots pine growth and health

2019 ◽  
pp. e12494
Author(s):  
Hanna Kwaśna ◽  
Jolanta Behnke‐Borowczyk ◽  
Roman Gornowicz ◽  
Piotr Łakomy
Keyword(s):  
Scots Pine ◽  
Clear Cut ◽  
Forest Sites

scholarly journals Spatio-temporal distribution of Hylobius abietis in Scots pine stands – implications for pest monitoring

2021 ◽  
Author(s):  
Iwona Skrzecz ◽  
Lidia Sukovata ◽  
Tomasz Jabłoński ◽  
Alicja Sowińska ◽  
Hanna Szmidla
Keyword(s):  
Temporal Distribution ◽  
Hylobius Abietis ◽  
Forest Protection ◽  
Pine Weevil ◽  
Clear Cut ◽  
Pest Monitoring ◽  
Baited Traps ◽  
Pine Stands ◽  
Spatio Temporal ◽  
Scots Pine Stands

AbstractThe protection of reforested areas against the large pine weevil Hylobius abietis is one of the greatest forest management challenges in many European countries. No information exists on the spatial distribution of this pest, which is necessary to assess its abundance and, consequently, to precisely estimate its threat to reforested sites. The aim of this study was to assess the spatio-temporal changes in the number of H. abietis beetles in reforested clear-cut areas (reforestations) and neighbouring Pinus sylvestris stands, from which these beetles are assumed to migrate to the reforestations. In this two-year study, baited traps were used to catch H. abietis beetles in the reforestations and neighbouring stands. The results revealed significantly more beetles in the neighbouring old stands (61–69 years) than in the young stands (5–11 years). The distribution of the beetles in both the old and young stands was inversely dependent on the distance from the stand edge. The large pine weevil migration to the reforestations was most intense in mid-May and early June. In May, most beetles were collected along the edges of the reforestations; in June, their distribution was more regular; and in July, the beetles were more abundant in the central part of the reforestations. These results allow H. abietis monitoring improvement, which is an important element of integrated forest protection.

Pine weevil abundance on clear‐cuttings of different ages: A 6‐year study using pitfall traps

1997 ◽  
Vol 12 (3) ◽  
pp. 225-240 ◽  
Author(s):  
Göran Örlander ◽  
Urban Nilsson ◽  
Göran Nordlander
Keyword(s):  
Pitfall Traps ◽  
Pine Weevil ◽  
Different Ages

Ecology of and control strategies for Calamagrostiscanadensis in boreal forest sites

1993 ◽  
Vol 23 (10) ◽  
pp. 2070-2077 ◽  
Author(s):  
Victor J. Lieffers ◽  
S. Ellen Macdonald ◽  
Edward H. Hogg
Keyword(s):  
Boreal Forests ◽  
Control Strategies ◽  
Clear Cut ◽  
Forest Sites ◽  
Gradual Loss ◽  
Rapid Spread ◽  
Successional Stages ◽  
Low Levels ◽  
Forest Floor Disturbance ◽  
And Control

Calamagrostiscanadensis (Michx.) Beauv. is a widely distributed rhizomatous grass that can seriously inhibit growth of white spruce (Piceaglauca (Moench) Voss) seedlings in the boreal forests of North America. We review the dynamics of this grass during four successional stages: the colonization of disturbed sites; dominance of the site by the grass a few years after disturbance; gradual loss of dominance with overstory development; and maintenance of the grass at low levels in the understory of the mature forest. We also describe C. canadensis in relation to recruitment from clonal growth and seed, environmental conditions for growth, the effects of grass litter buildup on conifer seedling microclimate, and overall competitive abilities. Control strategies for C. canadensis are as follows. If the grass is found in nearly every square metre in the understory prior to logging, there will be rapid spread when the stand is clear-cut unless clones are killed using herbicides or a deep burn. Large spruce seedlings, planted on large soil scalps or mounds, coupled with release by way of herbicides or sheep grazing, may be necessary for plantation establishment under conditions of encroachment by C. canadensis. Alternatively, the shade provided by a partial canopy may inhibit the grass sufficiently to allow spruce seedlings to establish. If grass is not abundant in the understory, we recommend (i) minimizing forest floor disturbance to reduce sites for grass seedling colonization or (ii) a slash burn with the hope of encouraging colonization by herbaceous species that have less impact on conifer seedlings.

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