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8 results for “ground-dwelling predators”
Data from: Shifts in ground-dwelling predator communities in response to changes in management intensity in Alpine meadows
<p>Here, we provide raw abundance data from a small-scale case study on the effects of management intensity on ground-dwelling macro-invertebrate communities in extensively and intensively managed hay meadows in South Tyrol, Italy. The fauna was sampled with the pitfall trap methods in two seasons (autumn 2018 and spring 2019). The predatory groups Araneae, Opiliones, Carabidae, Staphylinidae, and Formicidae were identified to species level, the rest – where possible – to family level.</p> <p>The data can be found as absolute numbers (i.e., individuals per pitfall trap) and as standardised numbers (i.e., individuals per sampling day). Additionally, we provide ecological species traits on rarity (for the area of South Tyrol), moisture requirements and ecological tolerance, as well as the Red List statuses.</p>
Figure 5 in Shifts in ground-dwelling predator communities in response to changes in management intensity in Alpine meadows
Figure 5. Proportions and χ2-test results for the ecological species traits moisture, rarity and ecological tolerance of ground-dwelling predatory arthropods (Arachnida, Carabidae, Staphylinidae, Formicidae) from extensively and intensively managed hay meadows in South Tyrol, Italy.
Figure 4 in Shifts in ground-dwelling predator communities in response to changes in management intensity in Alpine meadows
Figure 4. Non-metric multidimensional scaling (NMDS) of the full species community of predatory invertebrates, including the two treatments (intensive and extensive) and the two seasons (spring and autumn). Each spot represents one pitfall trap. Spider web centres represent the weighted centroids of each management type.
Figure 3 in Shifts in ground-dwelling predator communities in response to changes in management intensity in Alpine meadows
Figure 3. Abundance based accumulation curves for predatory arthropods based on Hill numbers N0 and N1 confronting extensively and intensively used montane hay meadows in South Tyrol, Italy.
Figure 2 in Shifts in ground-dwelling predator communities in response to changes in management intensity in Alpine meadows
Figure 2. The mean (and 95 % confidence interval) activity density (individuals per sampling day), species richness, and exponential Shannon diversity of ground-dwelling predatory arthropods from montane extensively and intensively used hay meadows and two sampling seasons (spring and autumn) in South Tyrol, Italy. No significant effect of management was detected for any biodiversity index.
Figure 1 in Shifts in ground-dwelling predator communities in response to changes in management intensity in Alpine meadows
Figure 1. Maps of the distribution of the six selected hay meadows (EH = extensively used hay meadows; IH = intensively used hay meadows) located in Barbian/Barbiano in the Autonomous Province South Tyrol, Italy.
Data from: Agri-environmental schemes promote ground-dwelling predators in adjacent oilseed rape fields: diversity, species traits and distance-decay functions
1. Rising demands for agricultural products and high environmental costs of intensive agriculture reinforce the need for ecological replacements in agricultural management. In Europe, agri-environmental schemes (AES) are implemented to enhance species richness and provision of ecosystem services, but the effectiveness of different AES types and the spatial extent of possible beneficial effects are little understood. In this study we assessed the effects of different AES types on diversity, species traits and distance-decay functions of ground- dwelling predators in adjacent crop fields. 2. On 31 study sites with winter oilseed rape (OSR) adjacent to four types of AES differing in management intensity and habitat age we recorded ground-dwelling predators (carabid beetles, staphylinid beetles and spiders) during OSR growth from April to July. Effects of the AES on species richness, activity densities and different traits of these taxa were examined with transects of pitfall traps running along a continuous distance gradient from the AES across the habitat border into the OSR fields. 3. Ground-dwelling predator communities benefitted similarly from the different AES types. In adjacent OSR, activity densities, carabid species richness and the proportion of predatory carabid beetles declined from the field edge while mean body size increased. Adjacent AES increased the proportion of predatory species and simultaneously decreased the proportion of granivorous or frugivorous species in adjacent OSR fields. 4. Synthesis and applications. Our results indicate a beneficial effect of adjacent agri-environmental schemes (AES) on ground-dwelling predators in oilseed rape (OSR), mostly irrespective of AES type and therefore management intensity and habitat age. The short-ranged distance decay effects on natural enemies in OSR underpin that a strategic spatial placement of AES in agricultural landscapes is required to maximise biological pest control. This could help replace anthropogenic input in modern agriculture and secure adequate yields.
Data from: Agri-environmental schemes promote ground-dwelling predators in adjacent oilseed rape fields: diversity, species traits and distance-decay functions
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