Line thinning fosters the abundance and diversity of understory Hymenoptera (Insecta) in Japanese cedar (<i>Cryptomeria japonica</i>D. Don) plantations

Maleque, M. Abdul; Ishiga, Hiroaki; Maetô, Kaoru; Taniguchi, Shingo

doi:10.1007/s10310-006-0243-6

Cited by 28 publications

(18 citation statements)

References 49 publications

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“…By creating heterogeneous understory conditions, line thinning increased understory plant biomass, which in turn contributed to enhancing arthropod diversity (Maleque et al 2007). Our results suggested that restoration of ecological processes, such as food-web interactions (pollination, predation, herbivory, decomposition, parasitism, etc.)…”

Section: Discussionmentioning

confidence: 98%

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Line thinning enhances diversity of Coleoptera in overstocked Cryptomeria japonica plantations in central Japan

Maleque

Ishii

Maetô

et al. 2007

Arthropod-Plant Interactions

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We evaluated the effectiveness of line thinning, a new silvicultural technique, toward restoring diversity of Coleoptera in overstocked Cryptomeria japonica D. Don plantations in central Japan. We compared the abundance of some common Coleoptera families between line-thinned stands and adjacent unthinned stands in two plantations: low-elevation Sugi site (4 years since thinning) and highelevation Kuchiotani site (6 years since thinning). Many bettle families comprising various functional groups such as plant feeders, wood borers, rotten wood feeders, root feeders, fungus feeders, dung feeders, and scavengers were more abundant in the line-thinned stands than in the unthinned stands. Furthermore, some important families were missing from the unthinned stands. There were strong positive relationships between Coleopteran abundance and understory vegetation. Our results suggest that line thinning may potentially increase biodiversity in overstocked C. japonica plantations by restoring important ecological processes such as food-web interactions (pollination, predation, herbivory, decomposition, parasitism, etc.), and habitat conditions.

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Section: Discussionmentioning

confidence: 98%

“…The control plot (20 · 30 m 2 ) was established in an adjacent unthinned stand on the same slope. Maleque et al (2007) give a detailed description of the study site and research plots. Grimaldi and Engel (2005) Sampling, identification and grouping of Coleoptera…”

Section: Treatment Applicationsmentioning

confidence: 99%

Line thinning enhances diversity of Coleoptera in overstocked Cryptomeria japonica plantations in central Japan

Maleque

Ishii

Maetô

et al. 2007

Arthropod-Plant Interactions

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“…Line-thinned plots support higher biomass and species richness of understory vegetation and corresponding insect abundance in Cryptomeria plantations in Japan (Maleque et al, 2006b(Maleque et al, , 2007aIshii et al, 2008). Ohsawa (2004) showed that species richness of cerambycid beetles increased in selectively thinned larch plantations (Larix kaempferi) compared to unthinned plantations in Japan.…”

Section: Use Of Bioindicators In Forest Man-agementmentioning

confidence: 90%

“…Selective cutting, line thinning, and green tree retention harvesting have been reported as ecologically friendly silvicultural techniques (Phillips et al, 2006;Jacobs et al, 2007;Maleque et al, 2007a). Line-thinned plots support higher biomass and species richness of understory vegetation and corresponding insect abundance in Cryptomeria plantations in Japan (Maleque et al, 2006b(Maleque et al, , 2007aIshii et al, 2008).…”

Section: Use Of Bioindicators In Forest Man-agementmentioning

confidence: 98%

Arthropods as bioindicators of sustainable forest management, with a focus on plantation forests

Maleque

Maetô

Ishiga

2009

Appl. Entomol. Zool.

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149

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Here we review the bioindicator potentials of several arthropod groups in forest management. First, we describe the indicator potentials of frequently used arthropod groups in general forest management, and then evaluate ecosystem function and plural taxonomic groups to infer forest biodiversity. We then review indicator potentials of arthropod groups to explore the ecological consequences of forest management practices. Different arthropod groups respond differently to forest management. Ants, carabid beetles, and spiders often respond to local-scale, disturbance-induced vegetation development caused by thinning and can be used to infer the ecological suitability of forest management treatments. Dung beetles and moths respond to habitat alterations caused by forest fragmentation and can indicate the suitability of landscape-level forest management techniques. Butterflies and cerambycid beetles respond highly positively to the presence of herbaceous plants and understory trees and can be used to infer the integrity of thinning treatments in forest management. Syrphid flies, which are strong flyers associated with vegetation complexity, can be used as bioindicators of landscape-level forest management practices. Monitoring regulatory service providers may also help when designing forest management practices. We propose using arthropod bioindicator groups to effectively design and assess ecologically sustainable management plans for both natural and plantation forests.

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“…The positive impacts of surrounding landscape patterns on the abundance and diversity of Coleoptera and Hymenoptera have been discussed in previous papers (Maleque et al 2006b(Maleque et al , 2007a. Other studies have also discussed the similar importance of largescale landscape patterns to biodiversity conservation in managed forests (Kerr 1999;Sakai et al 2006).…”

Section: Discussionmentioning

confidence: 91%

Seasonal prevalence of arthropods after line thinning of overstocked Japanese cedar (Cryptomeria japonica D. Don) plantations in central Japan

et al. 2009

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We investigated the seasonal changes in the abundance of coleopteran and hymenopteran functional groups to evaluate the ecological suitability of line thinning in overstocked Japanese cedar plantations in central Japan. In line thinning, 3-to 5-m-wide sections of the stand are harvested parallel to the mountain slope and perpendicular to the forest roads. The thinning intensity varies from 25 to 35% of the total number of trees. We compared the seasonal abundance between the thinned stand and the unthinned (control) stand in two plantation forests: a low-elevation Sugi site (4 years since thinning) and a high-elevation Kuchiotani site (6 years since thinning). Most coleopteran and hymenopteran functional groups were consistently more abundant in the thinned stand than in the unthinned stand. The differences in arthropod abundance between the thinned and unthinned stands were mainly caused by marked differences in the abundance of seasonally strongly changing functional groups during their peak seasons. The predators and parasitoids of insects as well as the plant and pollen feeders (plant-dependent functional groups) responded to seasonal changes in the vegetation (food and microhabitats) and microclimate. The ants were less affected by line thinning. Our results indicate that line thinning is an ecologically suitable silvicultural treatment for the improvement of biodiversity conditions in the overstocked plantation forests.

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Line thinning fosters the abundance and diversity of understory Hymenoptera (Insecta) in Japanese cedar (Cryptomeria japonicaD. Don) plantations

Cited by 28 publications

References 49 publications

Line thinning enhances diversity of Coleoptera in overstocked Cryptomeria japonica plantations in central Japan

Line thinning enhances diversity of Coleoptera in overstocked Cryptomeria japonica plantations in central Japan

Arthropods as bioindicators of sustainable forest management, with a focus on plantation forests

Seasonal prevalence of arthropods after line thinning of overstocked Japanese cedar (Cryptomeria japonica D. Don) plantations in central Japan

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