Saproxylic Bees and Wasps

Bogusch, Petr; Horák, Jakub

doi:10.1007/978-3-319-75937-1_7

Cited by 20 publications

(10 citation statements)

References 33 publications

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“…Another important landscape component for solitary bees and wasps is the availability of nesting habitat (Roulston & Goodell, 2011). Many solitary bee and wasp species nest in cavities in wood or plant stems and those species rely on woody semi‐natural habitats, such as forest edges for nesting (Bailey et al, 2014; Bartual et al, 2019; Bogusch & Horák, 2018; Morandin & Kremen, 2013; Uzman et al, 2020). Beyond nesting opportunities, woody habitats can offer floral and arthropod food for insects (Jauker et al, 2012; Montagnana et al, 2021; Westrich, 2019) and provide a favourable microclimate (Magura et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

The contrasting response of cavity‐nesting bees, wasps and their natural enemies to biodiversity conservation measures

Beyer

Kulow

Dauber

2023

Insect Conserv Diversity

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1. The implementation of agri-environmental schemes (AES) is a major tool to sustain biodiversity and ecosystem services in European agricultural landscapes. The benefit of different types and features of novel biodiversity measures needs to be assessed in order to successfully conserve insect communities in agroecosystems.2. We set up trap nests in 3 Â 3 km landscapes in Germany, in which farmers implemented different novel biodiversity measures. We tested the effect of different features of the closest three biodiversity measures (i.e. distance to measures, measures' area, measures' quality) and of the proximity to forest and oilseed rape and of landscape connectivity on the abundance and species richness of cavitynesting bees, wasps and their natural enemies.3. We found total cavity-nesting insect abundances to increase with measures' quality and to decline with increasing distance to oilseed rape and forest. Parasitism and mortality rates declined with edge density. 4. Cavity-nesting bees were not affected by biodiversity measures. Total wasp and herbivore-predating wasp abundances increased in proximity to biodiversity measures. The abundance and species richness of all wasps, natural enemies and spiderpredating wasps declined with increasing distance to forest. 5. Cavity-nesting wasps benefit from biodiversity measures, while effects on solitary bees might only be detectable after several years after measure establishment. The proximity to forest is a major factor promoting insects as forest edges provide food, nesting sites and shelter. We emphasise the need for long-term insect monitoring and an increasing focus of future AES on the creation of nesting habitats for effective insect conservation.

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Section: Introductionmentioning

confidence: 99%

The contrasting response of cavity‐nesting bees, wasps and their natural enemies to biodiversity conservation measures

Beyer

Kulow

Dauber

2023

Insect Conserv Diversity

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“…Typically, five stages are applied to classify deadwood according to decay: recently dead or raw wood (I), solid deadwood (II), rotten wood (III), mould wood (IV) and duff wood (V) (Hunter, 1990). Cavity‐nesting bees and wasps, the host species for parasitoids in our study, prefer fresh and/or moderately decomposed deadwood (Bogusch & Horák, 2018; Eckerter et al, 2021; Westerfelt et al, 2015), as nest building requires stable substrates. To account for this, the cumulative diameter of lying and standing deadwood at plot level of only decay stages I–III was used, excluding decay stages IV and V, in which substrates become soft and unsuitable.…”

Section: Methodsmentioning

confidence: 88%

Forest structure and heterogeneity increase diversity and alter composition of host–parasitoid networks

Rappa,

Staab,

Ruppert

et al. 2024

Ecological Entomology

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Antagonistic host–parasitoid interactions can be quantified using bipartite and metanetworks, which have the potential to reveal how habitat structural elements relate to this important ecosystem function. Here, we analysed the host–parasitoid interactions of cavity‐nesting bees and wasps, as well as their abundance, diversity and species richness with forest structural elements from 127 forest research plots in southwestern Germany. We found that parasitoid abundance, diversity and species richness all increase with host abundance, a potential mediator between parasitoids and forest structure. Both parasitoid abundance and diversity increased with stand structural complexity, possibly mediated by the abundance of hosts. In addition, parasitoid abundance increased with increasing standing deadwood and herb cover. The bipartite networks of host–parasitoid interactions showed higher connectance with increasing standing deadwood, herb cover and host abundance. Analyses of interactions within the host–parasitoid metanetwork revealed that increasing host abundance and decreasing canopy cover diversify the suites of interactions present at the plot level. These results demonstrate that forest structural elements can improve the stability and resilience of host–parasitoid networks by promoting parasitoids and diversifying interactions in ecological networks.

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“…In addition, active management such as mowing might multiply this effect since disturbed habitat is often preferred (Fortel et al 2014). Orchards with old veteran fruit trees also host a high diversity of species that nest in wood cavities, especially smaller ones (Horák et al 2013b;Bogusch and Horák 2018).…”

Section: Hymenopteransmentioning

confidence: 99%

Active Management of Fruit Orchard Meadows Under The Influence of Suburbanization is Important for Insect Diversity

Rada

Bogusch

Pech

et al. 2021

Preprint

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Fruit orchards under different types of management represent the most common agroforestry practice in central Europe. Traditional fruit orchards with trees usually planted in meadows are at a surplus, providing suitable habitats for many plant and animal species. We examined the influence of different management and biotope types on three insect groups. This study was conducted in thirty orchards across the capital city of the Czech Republic – Prague (496 km²). We investigated the diversities of butterflies, hymenopterans and beetles. Their species richnesses mainly benefitted from orchard management and were partly higher at xerothermic sites than at mesic sites. Red-listed species did not show any clear patterns. Open-landscape specialists were influenced by management, while forest species were influenced by habitat type. Generally, orchard abandonment led to insect biodiversity loss. Therefore, active agricultural management appears to be essential for insect biodiversity conservation in orchards, and different management and biotope types provide suitable conditions for specific species. Mowing and maintaining orchards are two important biodiversity management actions in highly human-populated landscapes.

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Saproxylic Bees and Wasps

Cited by 20 publications

References 33 publications

The contrasting response of cavity‐nesting bees, wasps and their natural enemies to biodiversity conservation measures

The contrasting response of cavity‐nesting bees, wasps and their natural enemies to biodiversity conservation measures

Forest structure and heterogeneity increase diversity and alter composition of host–parasitoid networks

Active Management of Fruit Orchard Meadows Under The Influence of Suburbanization is Important for Insect Diversity

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