Living on the edge: Effects of clear-cut created ecotones on nocturnal macromoth assemblages in the eastern boreal forest, Canada

Pinksen, Jasmine; Moise, Eric R.D.; Sircom, Julie; Bowden, Joseph J.

doi:10.1016/j.foreco.2021.119309

Cited by 7 publications

(3 citation statements)

References 59 publications

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“…This study provides data on the species diversity and abundance of Coleoptera sampled using bait beer traps set at two heights on edges and within deciduous forests of European Russia. Edges (transitional habitats and ecotones) have a major influence on the spatial distribution of many Coleoptera species [13,15,50,51]. Ecotones are transition zones that can contribute to biodiversity conservation, as they tend to be species-rich relative to neighboring habitats [52].…”

Section: Discussionmentioning

confidence: 99%

Edge Effects in the Distribution of Coleoptera in the Forests of the Center of the European Part of Russia

Ruchin

Egorov

Khapugin

2023

Insects

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Forest edges, which are ecotones, have a significant impact on the spatial distribution of many Coleoptera species. This research was carried out in 2020–2022 on the territory of the Republic of Mordovia (the center of the European part of Russia). Beer traps (with a bait made of beer with sugar) were used to collect Coleoptera. Four plots were selected for the research, which differed in the composition of plants on the edges, adjacent open ecosystems, and types of forest ecosystems. The forest adjoined closely to this open ecosystem. Inside the forest interior, at 300–350 m, a control inner section of the forest with a closed canopy was selected. There were eight traps on each site: edge–below, edge–above, forest interior–below, and forest interior–above, with two traps in each plot. These traps were located at a height of 1.5 (below) and 7.5 m (above) above the ground on tree branches. In total, more than 13,000 specimens from 35 families were recorded. Cerambycidae, Nitidulidae, Curculionidae, and Elateridae had the greatest species diversity. Nitidulidae (71.6% of all individuals), Curculionidae (8.3%), Scarabaeidae (7.7%), and Cerambycidae (2.4%) predominated in total number. There were 13 species common to all plots. At the same time, only four species were found in all traps (Protaetia marmorata, Cryptarcha strigata, Glischrochilus grandis, and Soronia grisea). The abundance of P. marmorata on all plots at an altitude of 7.5 m on the edges was greater. G. grandis prevailed in the lower traps. The abundance of C. strigata and S. grisea varied depending on the location of the trap on different plots. The general pattern was the greatest species diversity of Coleoptera on the edges in the lower traps. At the same time, the total number of all species on the edges was lower. At the edges, the Shannon index was practically always higher or equal to similar indicators in traps located in the forest interior. According to the average values of all plots, it turned out that the number of species of saproxylic Coleoptera prevails inside forest areas, and the largest number of saproxiles was found in the upper traps. An interesting feature for all plots was a more significant relative number of anthophilic species at the edge in the upper traps.

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Section: Discussionmentioning

confidence: 99%

Edge Effects in the Distribution of Coleoptera in the Forests of the Center of the European Part of Russia

Ruchin

Egorov

Khapugin

2023

Insects

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“…Sampling took place over two summers (2021 and 2022), with three collections (June, July, and August) per year. Although this does not encompass the breeding times of all species, this is when the majority are active (Pinksen et al, 2021). We chose sampling dates based on the lunar cycle, with the new moon being targeted due to a reduced influence of moonlight (Yela and Holyoak, 1997).…”

Section: Moth Collectionmentioning

confidence: 99%

Effects ofBacillus thuringiensissubsp.kurstakiapplication on non-target nocturnal macromoth biodiversity in the eastern boreal forest, Canada

Young,

Bowden,

Moise

et al. 2024

Preprint

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Bacillus thuringiensis subs. kurstaki (Btk) is a widely used bio-lepidoptericide for controlling pest insect populations. Currently, as part of a large-scale eastern spruce budworm management strategy, forest managers are treating forest stands with high insect densities to curtail the damage and spread of this forest pest. While moths serve vital roles as herbivores, pollinators, and as a food source for many migratory birds and bats, there is a dearth of large-scale studies on the non-target effects of Btk on moth assemblages, particularly in northern forests where diversity is relatively low. We established a replicated field study to evaluate the effects of Btk on non-target nocturnal macromoth communities in the eastern boreal forest of western Newfoundland, Canada over two years. We found no significant differences in total abundance or richness between treated and control sites. In 2022, control sites had significantly higher diversity (i.e. Hill numbers for Shannon and Simpson diversity metrics) compared to treatment sites. In 2021, differences in Hill numbers were only observed between north controls and treatments. After multiple years of treatment, there were shifts in the community composition and relative abundance of certain common species, but without significant changes in species richness or total abundance between control and treatment groups. The response of species is idiosyncratic, likely influenced by differences in phenology and voltinism.

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“…Intensive forest management, particularly clearcutting, is a significant anthropogenic disturbance factor [10,11]. However, it potentially creates ecotones at forest edges for nocturnal Lepidoptera species, which could support unique moth assemblages [12]. Singletree selection harvest disturbs the forest less than clearcutting, leaving a higher moth Forests 2024, 15, 896 2 of 13 abundance [10].…”

Section: Introductionmentioning

confidence: 99%

Effect of Combined Factors on Moth Communities in Western Hungarian Sessile Oak–Hornbeam Forests

Horváth,

Tóth,

Bolla

et al. 2024

Forests

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The many publications on forests and moth communities accomplished in different sampling regions and habitat types have produced diverse results and conclusions. The multiplicity of outcomes requires regional or local investigations on forest traits and herbivores to determine optimal management methods to maintain biodiversity and ecological stability in woodlands. Our study focused on sessile oak–hornbeam forests, which are economically and ecologically significant in many European countries. Samplings were performed in 2011–2012 using portable light traps in a highly forested area in western Hungary. We used 16 variables for PCA from the sampling of vascular plants and the local forest management plan document. These newly created variables (i.e., principal components) were related (used generalized linear models) to different groups of sampled moth communities: Macrolepidoptera, Microlepidoptera, and ecological groups (according to the host vegetation layer). Based on these significant relations, thinning activity may have various effects on moth communities, through the changed light regime and microclimate conditions. Temperature growth in the gaps could lead to the increasing abundance of heat-preferred Lepidoptera species; however, the decreasing species richness of trees (as a result of thinning) is less favourable for moth assemblages. Increasing herb coverage supports moth communities in the investigated forest stands, which may also be induced by the lower canopy closure. Besides the increasing coverage in the lower vegetation layers, plant species richness is also an important element for moth communities; this was demonstrated by the negative relation between the PC4, PC6 (weighted toward coverage), and Lepidoptera groups. Our results supported the fact that a single study on forest management practice or on vegetation traits is not sufficient to indicate their exact effect on moth communities, because their influence is complex. In order to halt the loss in diversity of the examined forest type, we suggest an overall approach to define the optimal forest management practice and tree mixture rate, regarding a larger area.

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Living on the edge: Effects of clear-cut created ecotones on nocturnal macromoth assemblages in the eastern boreal forest, Canada

Cited by 7 publications

References 59 publications

Edge Effects in the Distribution of Coleoptera in the Forests of the Center of the European Part of Russia

Edge Effects in the Distribution of Coleoptera in the Forests of the Center of the European Part of Russia

Effects ofBacillus thuringiensissubsp.kurstakiapplication on non-target nocturnal macromoth biodiversity in the eastern boreal forest, Canada

Effect of Combined Factors on Moth Communities in Western Hungarian Sessile Oak–Hornbeam Forests

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