A5049925200- Plant and animal studies
- Plant Parasitism and Resistance
- Insect and Pesticide Research
- Insect and Arachnid Ecology and Behavior
- Insect-Plant Interactions and Control
- Ecology and Vegetation Dynamics Studies
- Plant pathogens and resistance mechanisms
- Data Analysis with R
University of Koblenz and Landau
2017-2024
Universität Koblenz
2017-2022
Abstract Continuous availability of food resources, such as pollen, is vital for many insects that provide pollination and pest control services to agriculture. However, there a lack knowledge about the shared or complementary use floral resources by species, which hampers more effective landscape management simultaneously promote them in agroecosystems. Here, we quantified pollen bumblebee ( Bombus terrestris ) mason bee Osmia bicornis ), two species recognized important crop pollinators,...
The yield of animal-pollinated crops is threatened by bee declines, but its precise sensitivity poorly known. We therefore determined the dependence Hokkaido pumpkin in Germany on insect pollination quantifying: (i) relationship between pollen receipt and fruit set (ii) cumulative deposition each pollinator group. found that approximately 2500 grains per flower were needed to maximize set. At measured rates visitation, we estimated bumblebees (21 visits/flower lifetime, 864 grains/visit) or...
Abstract Semi‐natural habitats (SNH) are considered essential for pest‐suppressive landscapes, but their influence on crop pests and natural enemies can be highly variable. Instead of SNH per se, the availability resources, such as pollen nectar, may more relevant supporting pest control. Here, we assessed spatiotemporal variation multiple insect (cereal leaf beetles aphids) (predators aphid parasitoids) in wheat fields responses to landscape context flower availability. We combined detailed...
Flowering plants can enhance wild insect populations and their pollination services to crops in agricultural landscapes, especially when they flower before the focal crop. However, characterizing temporal availability of specific floral resources is a challenge.Developing an index for at landscape scale according use by pollinator. Investigating whether detailed temporally-resolved resource maps predict success broad bean better than land cover maps.We mapped plant species used as pollen...
Intensive agricultural landscapes can be hostile for bees due to a lack of floral and nesting resources, management-related stress such as pesticide use soil tillage. This threatens the pollination services that deliver insect-pollinated crops. We studied effects farming intensity (organic vs. conventional, number insecticide applications) availability semi-natural habitats at field landscape scale on pollinator visits pollen delivery pumpkin in Germany. found wild bumble were key...
Wild bumblebees are key pollinators of crops and wild plants that rely on the continuous availability floral resources. A better understanding spatio-temporal use food resources may help to promote their pollination services in agricultural landscapes. We placed colonies Bombus terrestris L. 24 landscapes with various degrees resource assessed different parameters colony growth fitness. estimated pollen during periods development based detailed information bumblebee diet spatial distribution...
Abstract Context Predatory insects contribute to the natural control of agricultural pests, but also use plant pollen or nectar as supplementary food resources. Resource maps have been proposed an alternative land cover for prediction beneficial insects. Objectives We aimed at predicting abundance crop pest predating and service they provide with both, detailed flower resource maps. Methods selected 19 landscapes 500 m radius mapped them both approaches. In centres landscapes, aphid...
Abstract Understanding the habitat use and movement patterns of natural enemies in agricultural landscapes is essential for enhancing biological pest control. Since many rely on floral resources, distribution these resources combination with behaviour likely influence control field crops. Nevertheless, few studies have assessed enemy at landscape scale. Here we estimated minimal distances green lacewing Chrysoperla carnea based consumed pollen spatial respective plant species 24 (500 m...