Spillover of crop herbivores into adjacent desert habitats

Adler, V. Hochman; Lubin, Yael; Coll, Moshe

doi:10.1016/j.agee.2014.04.029

Cited by 7 publications

(2 citation statements)

References 14 publications

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“…In addition, the sharp contrast in resource availability may sometimes not restrict, and perhaps may even promote arthropod movement between habitats. This may be due to the high relative abundance of arthropods spilling-over from the crops to the natural habitats following agriculture-related disturbances [62,63] and/or due to the high abundance of native arthropods seeking refuge in crop fields during the dry season [9]. The nearly nonexistent knowledge about parasitoids from this region, and from desert agroecosystems in general, makes it difficult to determine the source and movement patterns of the specific parasitoid species.…”

Section: Discussionmentioning

confidence: 99%

Parasitoid Abundance and Community Composition in Desert Vineyards and Their Adjacent Natural Habitats

Segoli

Kishinevsky

Rozenberg

et al. 2020

Insects

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Parasitoids are important natural enemies of many agricultural pests. Preserving natural habitats around agricultural fields may support parasitoid populations. However, the success of such an approach depends on the ability of parasitoids to utilize both crop and natural habitats. While these aspects have been studied extensively in temperate regions, very little is known about parasitoid communities in desert agroecosystems. We took one step in this direction by sampling parasitoids in six vineyards and their surrounding natural desert habitat in a hyper-arid region of the Negev Desert Highlands, Israel. We predicted that due to the high contrast in environmental conditions, parasitoid abundance and community composition would differ greatly between the crop and the natural desert habitats. We found that parasitoid abundance differed between the habitats; however, the exact distribution pattern depended on the time of year—with higher numbers of parasitoids in the natural habitat at the beginning of the vine growth season and higher numbers in the vineyard at the middle and end of the season. Although parasitoid community composition significantly differed between the vineyard and desert habitats, this only accounted for ~4% of the total variation. Overall, our results do not strongly support the notion of distinct parasitoid communities in the crop vs. the desert environment, suggesting that despite environmental contrasts, parasitoids may move between and utilize resources in both habitats.

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Section: Discussionmentioning

confidence: 99%

Parasitoid Abundance and Community Composition in Desert Vineyards and Their Adjacent Natural Habitats

Segoli

Kishinevsky

Rozenberg

et al. 2020

Insects

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“…Heterogeneous neighbour areas provide shelter for several arthropod species (Duelli et al ., ) and can reduce speed wind and microclimate temperature (Smith & Lewis, ; Gareau et al ., ). These conditions produce a movement of arthropods between crop and noncrop areas referred to as “functional spillover” (Blitzer et al ., ; Hochman Adler et al ., ) that can enhance crop biodiversity. In addition, Ortega and Pascual () demonstrated that the landscape complexity contributes to reducing the abundance and the damage produced by Bactocera oleae in olive groves.…”

Section: Discussionmentioning

confidence: 99%

Arthropod biodiversity in olive groves under two soil management systems: presence versus absence of herbaceous cover crop

Carpio

Castro

Tortosa

2018

Agri and Forest Entomology

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1 Agricultural intensification has greatly affected biodiversity in recent decades. One common and recent transformation that has taken place in Mediterranean countries is olive grove intensification, although its effects on biodiversity have rarely been studied. 2 In the present study, we investigated the effect of soil management practices, with versus without soil cover crops, on the arthropod abundance, richness, diversity and species composition in Andalusia olive groves, South Spain. 3 The results obtained show that these soil cover crops positively affect the diversity of arthropods, along with other variables such as the diversity of the plant community and Shannon index of the landscape. By contrast, the number of arthropods was higher in olive groves with bare ground as a result of the abundance of two families (Entomobryidae and Aeolothripidae), which comprised more than 50% of all the individuals collected. 4 Rank abundance diagrams and multivariate analyses showed differences between the two types of soil management systems with respect to the composition of families. 5 In conclusion, soil cover crops strongly improve the diversity of arthropods in olive orchards, which helps to maintain biodiversity in these intensive agroecosystems at the same time as improving other ecosystems services, such as soil fertility and the prevention of soil erosion.

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Pest thrips do not set field margins aside: preferred wildflowers sustain pest Frankliniella spp. (Thysanoptera: Thripidae) and their migration in commercial strawberry

Canovas

Guay

Fournier

et al. 2023

Arthropod-Plant Interactions

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Wildflowers in uncultivated field margin are important resources supporting both pest and non-pest thrips populations in agroecosystems. Environmental factors related to wildflowers have never been used as predictors to model pest thrips density in adjacent crops. Wild and cultivated flowers were sampled in strawberry field agroecosystem in Orléans Island, near Quebec City, Canada. Pest flower thrips Frankliniella intonsa and F. tritici had a wide wildflower host range, with preferences toward Leucanthemum vulgare, Trifolium pratense, Sonchus asper, and Cichorium intybus. Regression modeling revealed significant positive relationships between pest thrips density on specific wildflowers (Vicia cracca, Sinapis arvensis, S. asper, C. intybus, L. vulgare) and their density in strawberry flowers. Furthermore, thrips density within the crop decreased with distance from uncultivated field margin. Regarding crop management, knowing the associations between thrips pests and preferred wild flora as well as their spatial distribution in strawberry fields is an undeniable advantage.

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Spillover of crop herbivores into adjacent desert habitats

Cited by 7 publications

References 14 publications

Parasitoid Abundance and Community Composition in Desert Vineyards and Their Adjacent Natural Habitats

Parasitoid Abundance and Community Composition in Desert Vineyards and Their Adjacent Natural Habitats

Arthropod biodiversity in olive groves under two soil management systems: presence versus absence of herbaceous cover crop

Pest thrips do not set field margins aside: preferred wildflowers sustain pest Frankliniella spp. (Thysanoptera: Thripidae) and their migration in commercial strawberry

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