Seasonal Trends of Forest Moth Assemblages in Central Hokkaido, Northern Japan

Sayama, Katsuhiko; Ito, Masato; Tabuchi, Ken; Ueda, Akira; Hironaga, Teruhiko

doi:10.18473/lepi.v66i1.a2

Cited by 11 publications

(22 citation statements)

References 19 publications

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“…It has heterophyllous leaves; it flushes early leaves in spring and then, after the complete expansion of early leaves, develops late leaves (Koike, 1995). Nowadays, the grazing damage to white birch by larvae of leaf beetle (Agelastica coerulea) is increasing in northern Japan (Sayama et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Leaf phenology and insect grazing of Japanese white birch saplings grown under free-air ozone exposure

Sakikawa

Shi

Nakamura

et al. 2016

J. Agric. Meteorol.

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Ground-level ozone (O 3 ) increases yearly and negatively affects the growth of birches via leaf dynamics. Leaf area is directly related to plant production and is usually reduced by elevated O 3 (eO 3 ) and insect herbivores. The objective of this study was to explore factors affecting change in leaf number of white birch saplings and insects grazing under eO 3 . In order to accomplish this objective, we observed seasonal changes in leaf phenology and determined foliar defense chemicals in saplings grown under ambient air and free-air O 3 enrichment (60 nmol mol -1 for daytime). The leaf phenology showed the total number of emerged leaves was about 10 per shoot in the control and eO 3 plots. However, the number of attached leaves per shoot at ambient air decreased after mid-July, probably due to grazing by larvae of the leaf beetle. In addition, the concentration of condensed tannin in early leaves was higher in the eO 3 plot than that in the control plot. Such leaves with decreased nutritional value under eO 3 may prevent feeding of leaf beetles. These findings lead to the plausible understanding of an indirect effect of eO 3 on leaf phenology via foliar defense of white birch against insect herbivores.

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Section: Introductionmentioning

confidence: 99%

Leaf phenology and insect grazing of Japanese white birch saplings grown under free-air ozone exposure

Sakikawa

Shi

Nakamura

et al. 2016

J. Agric. Meteorol.

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“…We used this coarse classification because further classification reduced the sample size in each group to <100, the lowest number for calculating SIOQ-The feeding guild classification was based on the information of larval feeding plants in published literature (Inoue et al 1982, Miyata 1983, Sugi et al 1987. For voltinism, Sayama et al (2011) classified moth species in the present data into univoltine (227 species), multivoltine (21 species), and unknown (445 species in which <10 individuals were collected). Among these groups, we used only univoltine species because of the small sample size (<100) in the other groups.…”

Section: Methodsmentioning

confidence: 91%

“…For example, the short-term sampling scheme recommended in the current study missed up to 40% of the species collected in the whole season sample. These species include those emerging only in spring or in autumn, especially some geometrid winter moths that occur only in November (Sayama et al 2011). If any of these species have particular conservation concern, occurrence period of the species with conservation concern should be covered within the sampling period.…”

Section: Efficiency Of Species Richness Estimatorsmentioning

confidence: 99%

“…We collected adult moths using light traps during the whole moth flying season in forest stands in a cooltemperate region. In this sample, seasonal changes in the numbers of species and individuals were unimodal with a peak in summer (July or August) and species composition changed greatly between successive months due to the short occurrence period of each species (Sayama et al 2011). From this sample, we generated various subsamples that reduced the sampling period and sampling intensity, and tested whether these subsamples provided estimates of species richness, abundance, and species turnover representative of those revealed by the whole season sample.…”

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confidence: 99%

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Short-Term, Efficient Sampling Strategies for Estimating Forest Moth Diversity using Light Traps

Sayama

Ueda

Ito

et al. 2011

Annals of the Entomological Society of America

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Evaluation of species diversity for highly diverse taxa is extremely time-consuming and costly; thus, there is a need to develop efficient sampling strategies. We established a short-term, efficient sampling scheme to produce samples that represent a full-season sampling of moth assemblages with a high degree of seasonality. We sampled adult moths monthly for the duration ofthe moth fiying season by using light traps in five forest stands in a cool-temperate region in central Hokkaido, northern Japan. From this sample, we generated various subsaniples that reduced the sampling period and the number of traps per stand, and tested whether these subsamples provide estimates of species richness, abundance, and species turnover representative of those revealed by the whole season sample. Comparisons between the whole season sample and each subsample indicated that setting one light trap on a night in July and August, which shortened the sampling period to 25% and reduced sample size to 38%, was the most efficient sampling scheme to estimate abundance, species richness, and similarity in the whole season sample. The comparisons also suggest that it is efficient to use rarified species richness as a species richness estimator, and the Bray-Curtis index or Morisita's C¡^ for estimating species turnover between sites in moth assemblages. KEY WORDS biodiversity, Lepidoptera, seasonality, species richness estimator, species turnoverPervasive habitat loss and associated species extinction have emphasized the urgent need to evaluate species diversity. However, evaluating species diversity for highly diverse taxa, such as insects, is extremely time-consuming and costly because there are so many .species in one area (Lawton et al. 1998). Given the limitations in resources available for intensive, longterm surveys, there is a need to develop efficient sampling methods for evaluating biodiversity (Ozaki et al. 2006). Efficient sampling methods should reduce time and cost needed for sampling without causing significant information loss in .species richness (number of species) at sites (a diversity) and species turnover (dissimilarity of .species composition) between sites (ß diversity) (Jones and Eggleton 2000). Several species richness estimators (Colwell and Coddington 1994) and similarity indices (Chao et al. 2005) that substantially reduce undersampling bias have been developed to estimate species richness and turnover. These estimators and indices might provide tools to achieve

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“…Temporal occurrence patterns of moth assemblages are one of major concerns to forest managers and ecologists because they build high species diversity and larvae of most moths are herbivores taking a role as a pest on forests. Seasonal patterns of moth assemblages have been studied in both larvae and adult stages [29,30]. There are limited studies on the seasonal occurrence of adult moth assemblages [31][32][33], although there are more studies on the occurrence of larvae moth assemblages including the relation to the weather conditions, quality of foliage, and natural enemies [29,[34][35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Effects of Forest Management Practices on Moth Communities in a Japanese Larch (Larix kaempferi (Lamb.) Carrière) Plantation

Moon

Kim

Lee

et al. 2018

Forests

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Biodiversity in forests is strongly affected by forest management practices, such as clearcutting and aggregated retention. Therefore, the assessment of the effects of forest management on biodiversity is a major concern in forest ecology. In the present study, we aimed to characterize the effects of forest management practices, after one year, on the abundance, species richness, community composition, and functional groups of moths in forests. The moths were sampled in four different forest stands: three stands (clearcutting, aggregated retention, and no cutting) in a planted Japanese larch forest and one stand in a natural Mongolian oak forest. The results revealed that the moth communities changed in response to the changes in vegetation after the implementation of forest management practices, and clearcutting increased the abundance and species richness of herbivorous and warm-adapted species. The structure and function of moth communities were affected by the forest management practices such as clearcutting and aggregated retention, which were reflected by a decrease in community indices and change in moth community composition with changes in vegetation.

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Seasonal Trends of Forest Moth Assemblages in Central Hokkaido, Northern Japan

Cited by 11 publications

References 19 publications

Leaf phenology and insect grazing of Japanese white birch saplings grown under free-air ozone exposure

Leaf phenology and insect grazing of Japanese white birch saplings grown under free-air ozone exposure

Short-Term, Efficient Sampling Strategies for Estimating Forest Moth Diversity using Light Traps

Effects of Forest Management Practices on Moth Communities in a Japanese Larch (Larix kaempferi (Lamb.) Carrière) Plantation

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