Die Wirkung des Mähens auf die Fauna der Wiesen - Eine Literaturauswertung für den Naturschutz

Poel, Dennis van de; Zehm, Andreas

doi:10.1002/9783527678471.hbnl2015001

Cited by 10 publications

(5 citation statements)

References 16 publications

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“…Chalcidoidea and Ichneumonoidea might also benefit from a flushing bar made of track tarpaulin, mounted in front of the mowing head to chase away the insects. In addition, more factors need to be considered for a sustainable mowing regime, such as, for example low mowing speed to increase the escape interval of animals (Klonglan et al., 1959), leaving unmown plots as refuges and hibernation sites, and removal of cut grass (Unterweger et al., 2018; Van de Poel & Zehm, 2014). As roadside mowing has safety purposes and cannot be avoided, it is important to establish mowing concepts that reduce insect mortality.…”

Section: Discussionmentioning

confidence: 99%

Microhymenoptera in roadside verges and the potential of arthropod‐friendly mowing for their preservation

Haas‐Renninger,

Weber,

Felske

et al. 2023

J Applied Entomology

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The worldwide decline of insects is one of the major challenges for humankind. One of its main drivers is intensive farming, which reduces habitats and food resources for insect populations and causes direct mortality by pesticides. In addition, mowing of grassland poses another threat to insects, especially when it is done frequently, such as in roadside verges. Roadside verges comprise large areas worldwide and can serve as habitats for animals and plants and as corridors to connect populations when they are maintained ecologically, for example when mowing is done arthropod‐friendly and with low frequency. Microhymenoptera are highly diverse, mostly show a parasitoid lifestyle and occur in large numbers in meadows and grasslands. Although they have an important ecological function in regulating their arthropod host populations, they were mostly neglected in studies on the influence of mowing on insects. Therefore, we assessed which families of microhymenoptera occur in roadside verges and meadows, examined if they are affected by the mowing process with a conventional mulching mower, and studied which groups benefit from arthropod‐friendly mowing, using the mowing head Eco 1200 plus from MULAG, and a flushing bar made of track tarpaulin. In our experimental grassland plots, we found specimens of 18 families from the six microhymenoptera superfamilies Chalcidoidea, Ceraphronoidea, Diaprioidea, Ichneumonoidea, Platygastroidea and Proctotrupoidea. Mowing with a conventional mulching mower caused a significant loss of up to 64% for parasitoid Hymenoptera. The Eco 1200 plus showed an arthropod‐friendly effect only on the number of individuals of Chalcidoidea, saving 38% of individuals compared with the conventional mower. The flushing bar showed a significant effect on total number of individuals with a reduction only on Chalcidoidea and a tendency for Ichneumonoidea with 30% and 47%, respectively. Our study demonstrates the detrimental effect of mowing with a conventional mulching mower on microhymenoptera and shows that this effect can be partly reversed for Chalcidoidea and Ichneumonoidea through the arthropod‐friendly mower and a flushing bar. Our study highlights the importance to consider microhymenoptera in the context of insect decline.

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Section: Discussionmentioning

confidence: 99%

Microhymenoptera in roadside verges and the potential of arthropod‐friendly mowing for their preservation

Haas‐Renninger,

Weber,

Felske

et al. 2023

J Applied Entomology

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“…The Roach Rutilus rutilus is spawning in spring and early summer for example, with eggs on vegetation close to the surface, leading to the threat by water management of falling water levels (Mills 1981 ). Disturbing water management does have a negative impact on amphibian spawn and larvae in spring and early summer, when they are present (Leiders and Röske 1996 ; Twisk et al 2000 ). Concerning vegetation diversity, weeding in autumn leaves diaspores of annual vegetation, whereas a great amount of competitive perennial vegetation is removed (Garniel 2012 ).…”

Section: Discussionmentioning

confidence: 99%

Current Water Management of Small Lotic Waterbodies in the Context of Nature Conservation in Germany

Idilbi,

Ssymank,

Martens

2023

Environmental Management

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Small lotic waterbodies are abundant and species rich habitats, offering refuges and microhabitats to protected species of the European Union Habitats Directive. Highly impacted by water management actions, it is essential to reveal the current status and challenges of water management. The present study aims to identify relevant issues by conducting a survey concerning water management authorities. Authorities were selected according to their involvement in the management of small lotic waterbodies within the actual range of a threatened species, Coenagrion mercuriale (Odonata), which is highly dependent on water management actions and protected by the Habitats Directive. The survey involved three sets of questionnaires, (1) socio-demographic (personal) questions (2) specific questions about water management and (3) questions on the biological background. Out of 181 selected authorities, 75 participated in the survey. The results showed that though nature conservation interests are partially considered, they represented a minor factor in water management decision-making. In addition, knowledge exchange is insufficient between involved stakeholders from policy, management practice and science, which was especially reflected in the case of equipment use and accruing material. The reconciliation of both, water management and nature conservation interests, can contribute to enhance the conservation status of key protected species of small lotic waterbodies under the Habitats Directive.

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“…Mowing causes all inflorescences to disappear temporarily [6]. Therefore, large-scale, simultaneous mowing should be avoided, otherwise it can have significant effects on flowerpollinating insects, and there will be no more compensatory areas left where subpopulations of organisms can develop and recolonize the mown areas [6,26,27]. In addition, 10% of the areas should be left standing during each mowing, for example, as overwintering habitats [27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Anaerobic Digestion of Cuttings from Grassland in Protected Landscape Areas

Brandhorst,

Hülsemann,

Ohnmacht

et al. 2024

Inventions

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Orchard meadows are biodiversity hotspots, as the understory often consists of species-rich lowland hay meadows. Due to the low energy density of the grass, it is not suitable as feed, but the energetic utilisation of cuttings from orchard meadows for biogas production could facilitate the protection of these semi-natural grasslands. Here, lowland hay meadows and extensively used orchards were investigated to assess their potential for anaerobic digestion in biogas plants. Aboveground biomass was harvested weekly from three lowland hay meadows differing in conservation statuses and analysed for cell wall components (aNDF, ADF, and ADL), nutritional values (XF, XL, XP), and methane formation potential by anaerobic digestion. Further, orchard meadows were harvested twice during summer and analysed in the same way. Specific methane yield decreased linearly with cutting dates from 0.325 m3 kg−1(oDM) to 0.237 m3 kg−1(oDM). The cumulated area-related methane yields of the orchards ranged from 818 m3 ha−1 to 1036 m3 ha−1. Specific methane yields were linearly correlated with XL, aNDF, ADF, and ADL.

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Die Wirkung des Mähens auf die Fauna der Wiesen - Eine Literaturauswertung für den Naturschutz

Cited by 10 publications

References 16 publications

Microhymenoptera in roadside verges and the potential of arthropod‐friendly mowing for their preservation

Microhymenoptera in roadside verges and the potential of arthropod‐friendly mowing for their preservation

Current Water Management of Small Lotic Waterbodies in the Context of Nature Conservation in Germany

Anaerobic Digestion of Cuttings from Grassland in Protected Landscape Areas

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