The effect of local and landscape level land-use composition on predatory arthropods in a tropical agricultural landscape

Lemessa, Debissa; Hambäck, Peter A.; Hylander, Kristoffer

doi:10.1007/s10980-014-0115-y

Cited by 37 publications

(31 citation statements)

References 56 publications

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“…The average proportion of crop habitat to total landscape area in each site has an obvious decrease when the landscape scale gradually expands from a 50 m to a 200 m radius buffer. Such a result is contrary to a recent study in southwest Ethiopia [4], which showed that the proportion of annual crop cover decreased when the landscape scale varied from 100 m to 200 m and 500 m radii buffers spatial scales. This difference may be because the research in Ethiopia was conducted in an open agricultural landscape [4], while our research was in a rural-urban fringe landscape.…”

Section: Discussioncontrasting

confidence: 99%

“…Additionally, the maximum total area is only 12.56 ha for a centered sampling plot of L. striatellus, even at the 200 m radius buffer zone. In comparison with our study, previous studies were mostly conducted at larger spatial scales [4,27], because their research subjects had stronger flying or moving capabilities than L. striatellus. Even though the research subject belongs to the same family of Delphacidae (Delphacodes kuscheli) like our study, the spatial scale at the agricultural landscape had over 2000 m for a radius buffer [19,[28][29][30][31].…”

Section: Discussionmentioning

confidence: 68%

“…Additionally, human activities affect landscape characteristics at a faster rate in prosperous developing countries than in developed countries. For example, landscape heterogeneity is more diverse in the rural-urban fringe region than in a homogenized, agricultural field and urban area due to different biotic and abiotic factors [4]. More so, a heterogeneous and fragmented agricultural landscape can affect forms of species richness and abundance in developing countries as well as developed ones.…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Landscape Composition on the Abundance of Laodelphax striatellus Fallén in Fragmented Agricultural Landscapes

Liu

Chen

et al. 2016

Land

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Abstract:The spatial distribution of crop and non-crop habitats over segmented agricultural landscapes could be used as a means to reduce insect pest populations. Seven land cover categories such as wheat, rapeseed, vegetable, water, built-up, paved road, and unsurfaced road were extracted from GeoEye satellite images dating from late May to late June of 2010. Three diversity metrics and three evenness metrics were estimated from the abovementioned land cover categories for quantifying the effect of landscape composition on nymphal and adult Laodelphax striatellus Fallén. The degree of correlation between the proportion of crop cover and adjacent spatial scales (r: 0.651-0.983) was higher than the correlation between the proportion of crop cover and nonadjacent spatial scales (r: −0.255-0.896). While the degree of correlation between diversity indices and abundance of L. striatellus decreased gradually when the spatial scales varied from large (>100 m radius buffer) to small (<100 m). Our study suggests that when using natural biological pest control and ecological engineering practices in the rural-urban fringes, the crop field's width should be less than 200 m and increasing vegetation diversity within such a scale will be helpful to regulate the insect pests under a certain density.

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Section: Discussioncontrasting

confidence: 99%

Section: Discussionmentioning

confidence: 68%

Section: Introductionmentioning

confidence: 99%

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The Effect of Landscape Composition on the Abundance of Laodelphax striatellus Fallén in Fragmented Agricultural Landscapes

Liu

Chen

et al. 2016

Land

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“…There are only few studies that have investigated arthropod communities and their functions in homegardens (Klein et al 2002;Mohri et al 2013;Lemessa et al 2015), even though they are essential to understand the importance of homegardens as a provider of ecosystem services. In places with a high cultural diversity such as Indonesia, it is also important to understand the relationship between cultural background of the migrants versus non-migrants owners and their agricultural practices conducted in the homegardens due to the potential flow-on effects to arthropod communities.…”

Section: Introductionmentioning

confidence: 99%

Cultural homegarden management practices mediate arthropod communities in Indonesia

et al. 2016

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Tropical forest loss and transformation to agroecosystems have serious impacts on biodiversity, associated ecosystem services and the livelihood of local people. The high crop plant biodiversity and low intensity management in many homegardens could play an important role in the preservation of biodiversity in modified landscapes, as well as sustain food security of low income households. In this study, we focused on the role of the owner's cultural background as migrants (from the island of Java) or non-migrants (local residents) for homegarden characteristics, such as size, management diversification, and crop species richness, and their effect on arthropod communities in Jambi province, Indonesia. Vane traps, pitfall traps and sweep netting were used to survey the arthropod communities, in particular bees and wasps, in 24 homegardens. Our results show that the native Jambi locals used a smaller number of management practices and had smaller homegardens than the Javanese transmigrants, whereas crop species richness did not differ. Management diversification and crop species richness were positively related to arthropod abundance as well as species richness of bees and wasps, presumably due to the enhanced homegarden heterogeneity. Our findings suggest that the cultural practices of migrant versus non-migrant land-use managers, which is usually neglected in agroecology, can be a major determinant of management practices shaping community structure and services of beneficial arthropods.

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“…In our study area, Engelen (2012) recorded an average of 58 bird species per homegarden and these included many insectivorous species indicating the potential for pest control in this landscape. The dominant groups of ground predatory arthropods in the homegardens are spiders, ants and beetles (Lemessa et al, 2015). Among these groups, the most abundant are ants and spiders; in particular army ants (Dorylus spp.)…”

Section: Introductionmentioning

confidence: 99%

Tree cover mediates the effect on rapeseed leaf damage of excluding predatory arthropods, but in an unexpected way

Lemessa

Samnegård

Hambäck

et al. 2015

Agriculture, Ecosystems & Environment

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The effect of local and landscape level land-use composition on predatory arthropods in a tropical agricultural landscape

Cited by 37 publications

References 56 publications

The Effect of Landscape Composition on the Abundance of Laodelphax striatellus Fallén in Fragmented Agricultural Landscapes

The Effect of Landscape Composition on the Abundance of Laodelphax striatellus Fallén in Fragmented Agricultural Landscapes

Cultural homegarden management practices mediate arthropod communities in Indonesia

Tree cover mediates the effect on rapeseed leaf damage of excluding predatory arthropods, but in an unexpected way

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