Insect diversity responses to forest conversion and agroforestry management

Bos, Merijn M.; Höhn, Patrick; Saleh, Shahabuddin; Büche, Boris; Buchori, Damayanti; Steffan‐Dewenter, Ingolf; Tscharntke, Teja

doi:10.1007/978-3-540-30290-2_14

Cited by 18 publications

(25 citation statements)

References 48 publications

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“…The high contribution of beta (β) diversity to regional species richness is consistent with other studies on aquatic invertebrates (Stendera & Johnson 2005), and solitary bees, canopy beetles and ants (Bos et al 2007), which found that β diversity increased with environmental heterogeneity between study sites. The habitat heterogeneity hypothesis states that structurally complex habitats may provide more niches and diverse ways of exploiting the environmental resources, and thus increase species diversity (Tews et al 2004).…”

Section: Species Richness Across Land-use Types and Sampling Yearssupporting

confidence: 76%

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Contribution of Alpha and Beta Diversity Across Land-Use Type to the Regional Diversity of Dung Beetles in Central Sulawesi

Shahabuddin

2013

HAYATI Journal of Biosciences

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The importance of spatial scale has been acknowledged as one of determining factors of species diversity in local and regional diversity. The aim of this study was to evaluate contribution of alpha () and beta () diversity across land-use type to gamma () diversity at the margins of tropical forest in Central Sulawesi using dung beetles (Coleoptera: Scarabaeidae) as a focal group. Baited pitfall traps set in four land-use types ranging from natural forest through cacao agroforestry systems to open areas during two years of sampling (2009 and 2012). A total of 28 dung beetle species belonging to four genera were captured during the study period. The results showed that contribution of  diversity was higher than that of  diversity of dung beetles. Each land-use type contributed about 56.5 to 62.5% of the total species richness ( diversity). The similar pattern of biodiversity between each spatial scale and during the two sampling years emphasized the large contribution of each land-use type to maintaining a high portion of the regional species richness. It suggests the importance of managing other land-use types, such as secondary forest and agroforestry as well as protecting the remaining natural forests

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Section: Species Richness Across Land-use Types and Sampling Yearssupporting

confidence: 76%

“…Each of land-use systems in the Kulawi landscape supported on average 45% of the total diversity of solitary bee and parasitic Hymenoptera and 58% of the total diversity of canopy beetles (Bos et al 2007). Others authors have also noted the importance of land-use systems on regional diversity.…”

Section: Species Richness Across Land-use Types and Sampling Yearsmentioning

confidence: 98%

Contribution of Alpha and Beta Diversity Across Land-Use Type to the Regional Diversity of Dung Beetles in Central Sulawesi

Shahabuddin

2013

HAYATI Journal of Biosciences

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“…Similarly, Peng and Christian (), report lower levels of fruit damage in cashew with the presence of weaver ants. However, as vegetation complexity declines in agroecosystems, tree density and diversity may also decrease (Bos et al., ; Moguel & Toledo, ), as well as the possibility to generate connections between the arboreal vegetation, which might impact arthropod populations (Bos et al., ). The lack of connectivity between trees in managed systems can have a significant impact on the mobility of worker ants and their ability to control resources.…”

Section: Introductionmentioning

confidence: 99%

“…as the possibility to generate connections between the arboreal vegetation, which might impact arthropod populations (Bos et al, 2007). The lack of connectivity between trees in managed systems can have a significant impact on the mobility of worker ants and their ability to control resources.…”

mentioning

confidence: 99%

Vegetation connectivity increases ant activity and potential for ant‐provided biocontrol services in a tropical agroforest

et al. 2019

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In natural and managed systems, connections between trees are important structural resources for arboreal ant communities with ecosystem‐level effects. However, ongoing agricultural intensification in agroforestry systems, which reduces shade trees and connectivity between trees and crop plants, may hinder ant recruitment rates to resources and pest control services provided by ants. We examined whether increasing connectivity between coffee plants and shade trees in coffee plantations increases ant activity and enhances biological control of the coffee berry borer, the most devastating insect pest of coffee. Further, we examined whether artificial connections buffer against the loss of vegetation connectivity in coffee plants located at larger distances from the nesting tree. We used string to connect Inga micheliana shade trees containing Azteca sericeasur ant nests to coffee plants to compare ant activity before and after placement of the strings, and measured borer removal by ants on coffee plants with and without strings. Ant activity significantly increased after the addition of strings on connected plants, but not on control plants. Borer removal by ants was also three times higher on connected plants after string placement. Greater distance from the nesting tree negatively influenced ant activity on control coffee plants, but not on connected plants, suggesting that connections between coffee plants and nest trees could potentially compensate for the negative effects that larger distances pose on ant activity. Our study shows that favoring connectivity at the local scale, by artificially adding connections, promotes ant activity and may increase pest removal in agroecosystems. Abstract in Spanish is available with online material.

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“…Ground‐living herbaceous plants have largely been ignored in biodiversity assessments of agroforestry systems, even though herbs can make up a considerable proportion of plant diversity in tropical forests (Gentry & Emmons 1987) and also provide food or structural habitats for a wide range of animals (Bos et al 2007b, Höhn et al 2009, Wanger et al 2009). Furthermore, herbs may act as direct competitors to cultivated plants and act as reservoirs for pathogens and herbivores (Entwistle 1972, Siebert 2002).…”

Section: Number Of Planted and Forest Trees In The Three Cacao Managmentioning

confidence: 99%

Conservation Value of Cacao Agroforestry Systems for Terrestrial Herbaceous Species in Central Sulawesi, Indonesia

et al. 2011

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Tropical secondary forest and agroforestry systems have been identified as important refuges for the local species diversity of birds and other animal groups, but little is known about the importance of these systems for terrestrial herbs. In particular, few studies report how the conversion from tropical forest to technified cacao plantation affects the species richness and the community structure of herbs. We conducted surveys in 43 cacao plantations along the border of the Lore Lindu National Park in Central Sulawesi, ranging from agroforests to technified cacao, categorizing the plantations as rustic cacao, planted shade cacao, and technified cacao. We recorded 91 herb species. Of the 74 species determined to species level, 21 were also found in natural forests, while 53 were recorded only in agricultural habitats. Araceae was the most forest-dependent plant family while Asteraceae included the highest number of nonforest species. Overall, the presence of forest species was confined to moderately intensively managed rustic and planted shaded plantations. Distance from the forest, which has been identified as a crucial parameter for the diversity and composition of other taxa in cacao agroforests, only played a minimal role for herbs. Our study suggests that native forest herbs maybe more vulnerable to forest conversion than animal groups. The intensification of cacao plantation management increases the presence of weedy species to the detriment of native forest species.

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Insect diversity responses to forest conversion and agroforestry management

Cited by 18 publications

References 48 publications

Contribution of Alpha and Beta Diversity Across Land-Use Type to the Regional Diversity of Dung Beetles in Central Sulawesi

Contribution of Alpha and Beta Diversity Across Land-Use Type to the Regional Diversity of Dung Beetles in Central Sulawesi

Vegetation connectivity increases ant activity and potential for ant‐provided biocontrol services in a tropical agroforest

Conservation Value of Cacao Agroforestry Systems for Terrestrial Herbaceous Species in Central Sulawesi, Indonesia

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