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experiments:enchanting_fallow:start [2020/07/16 08:58] rolf created |
experiments:enchanting_fallow:start [2020/07/20 14:53] (current) jonas |
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+ | //Insects need food and nesting places in sufficient variety, quality and connectivity. During | ||
+ | the complex life cycle, different habitats are required for reproduction, | ||
+ | intake and hibernation.// | ||
+ | |||
+ | The more structural diversity there is in a landscape, the more likely insects are to find | ||
+ | suitable living conditions and habitats there. | ||
+ | |||
+ | ===== Habitats for butterflies ===== | ||
+ | |||
+ | Many insect species have been deprived of their livelihood in recent decades - through | ||
+ | increased management intensity of grassland, the loss of fallow land, the elimination of | ||
+ | small structures in the agricultural landscape (such as raines, hedges, flower and herb-rich | ||
+ | hems and wetlands), growing homogeneity of cultivated areas, and loss of land through non- | ||
+ | agricultural use. | ||
+ | |||
+ | Butterfly species are very good bioindicators. If the most sensitive and vulnerable species of | ||
+ | a claim type are protected by improving their habitats, other habitat-typical species are also | ||
+ | promoted. | ||
+ | |||
+ | Terrestrial microhabitats are habitats in the smallest space, which are characterized by their | ||
+ | own microclimate (temperature, | ||
+ | composition of the soil (e.g. also the proportion of raw soil), the type, density, and height of | ||
+ | the plants growing there, and the prevailing light conditions (shading). | ||
+ | |||
+ | Many species of butterflies often prefer a warm-dry microclimate and lay their eggs on | ||
+ | young host plants such as umbellifers, | ||
+ | which warms up in the sun and creates a warm-dry microclimate preferred by many | ||
+ | butterfly larvae. | ||
+ | |||
+ | Some butterflies also suck on wet soil or puddles to absorb dissolved minerals. Leaving | ||
+ | unsealed surfaces offers possibilities. | ||
+ | |||
+ | |{{: | ||
+ | |||
+ | Microhabitats can be examined more closely with drones. The information obtained can | ||
+ | then be used in ecological field research for larger areas, so that predictions can be made, | ||
+ | for example, about the suitability of butterfly egg deposition in a landscape. The method of | ||
+ | bridging scales (fine to large) can also be used to assess and verify the effectiveness of | ||
+ | nature conservation measures. Thus, statements about the ecosystem functionality of a | ||
+ | landscape can also be made. | ||
+ | |||
+ | ===== Fallow land development ===== | ||
+ | |||
+ | The structure of the vegetation is particularly important for the occurrence of insect species. | ||
+ | A coexistence of all successional stages is necessary. | ||
+ | |||
+ | From the initial stage of a vegetation-free, | ||
+ | bioeconomic (plants, animals, fungal society - climax society) develops independently | ||
+ | without regulatory intervention through various intermediate stages, which is adapted to | ||
+ | the site-specific environmental factors (climate, soil). Provided that the environmental | ||
+ | factors allow it and no further disturbances occur, fallow, abandoned successional areas in | ||
+ | these latitudes develop in succession (primary and secondary succession) via newly | ||
+ | colonizing pioneers, such as prokaryotes, | ||
+ | perennials, shrubs, and bushes and even forests. Weakly competitive species will be replaced | ||
+ | by stronger species over time. | ||
+ | |||
+ | This development is often disturbed or altered by e.g. storms, fire, rockfall, cattle kicking, | ||
+ | machinery, ploughing or clearing. In this way new, & | ||
+ | Disturbed structures in ecosystems are often positive and absolutely necessary for the | ||
+ | preservation of many, and here in particular the highly endangered butterfly species. | ||
+ | It would be necessary to reestablish extensive forms of use, small-scale mosaics with | ||
+ | different uses and also dates of use and unregulated components of use. This would create | ||
+ | important disturbance sites (in forests and on marginal yield sites or also on municipal green | ||
+ | spaces or in private gardens). | ||
+ | |||
+ | |{{: | ||
+ | |||
+ | ===== What the individual can do: ===== | ||
+ | |||
+ | Allow structural diversity, changing fallow land, in your environment as well - on a small and | ||
+ | large scale. Give ruderal surfaces, mostly fallow raw soil areas, a chance or create fallow | ||
+ | islands yourself. Allow leaves, rootstocks, puddles, and dead plant parts to lie wild. Cairns, | ||
+ | wood piles, open ground, cracks, or holes in the ground offer important microstructures for | ||
+ | many insects. | ||
+ | |||
+ | Then enable magical, fluttering diversity of insects and thus make a valuable contribution to | ||
+ | the preservation of species diversity (biodiversity). | ||
+ | |||
+ | **Sources: | ||
+ | |||
+ | * Fartmann, T. & G.Hermann (Hrsg.) (2006): Larvalökologie von Tagfaltern und Widderchen in Mitteleuropa. | ||
+ | * Weidemann, H.J (1989a): Die Bedeutung von Sukzession und „Störstellen“ für den Biotopschutz bei Schmetterlingen | ||
+ | * www.lbv.de | ||
- | No English translation, |