Relative impacts of land‐use and climate change on grasshopper range shifts have changed over time

Poniatowski, Dominik; Beckmann, Christian F.; Löffler, Franz; Münsch, Thorsten; Helbing, Felix; Samways, Michael J.; Fartmann, Thomas

doi:10.1111/geb.13188

Cited by 51 publications

(58 citation statements)

References 64 publications

(171 reference statements)

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“…Almost all species actively colonize transformed habitats such as lawns, roadsides, and agricultural fields [114]. Similar combination of some positive and negative trends in orthopteran diversity and distribution changes mainly associated with local human activity is also revealed for Central European grasslands [130,131] and the mountains of Switzerland [132]. On the contrary, our unpublished data show that the distribution of orthopteran taxa and populations over the steppe intermountain basins of the Altay-Sayan Mountains remains relatively stable.…”

Section: Conclusion: the Steppe Orthoptera-retrospective And Prospectivesupporting

confidence: 68%

Distribution Patterns of Grasshoppers and Their Kin over the Eurasian Steppes

Сергеев

2021

Insects

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The main aims of this paper are to reveal general patterns of Orthoptera distribution in the Eurasian steppes, to evaluate long-term trends of changes in distribution of taxa and populations, and to estimate the potential for population changes relative to human activity and global warming trends. The main publications concerning diversity and distribution of these insects over the steppes are analyzed. The fauna of the Eurasian steppes includes more than 440 species of Orthoptera. The general distribution of grasshoppers and their kin in the Eurasian steppes reflects their common associations with different grasslands. The species richness increases from the relatively cold forest-steppes to the semi-deserts with their warm summer. There are some endemic or subendemic taxa, including the tribe Onconotini (Tettigoniidae). The populations’ distribution of Orthoptera is also analyzed. The populations of native Orthoptera extend through all the herbaceous landscapes. Under these conditions, the interrelating of colonies of each species may result in great abundance. The population distribution of three species locusts (Locusta migratoria, Calliptamus italicus, Dociostaurus maroccanus) is also discussed. Some notable changes of their populations’ distribution and dynamics are characterized. The situation with rare Orthoptera is estimated. Retrospective and prospective of the steppe fauna of Orthoptera are discussed.

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Section: Conclusion: the Steppe Orthoptera-retrospective And Prospectivesupporting

confidence: 68%

Distribution Patterns of Grasshoppers and Their Kin over the Eurasian Steppes

Сергеев

2021

Insects

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“…6 Mean number of individuals (± 95% CI) per transect of the 10 most abundant species shown separately for grazed and mown transects. Asterisks indicate significant differences in abundance between mown and grazed transects (t-test; *p ≤ 0.05, **p ≤ 0.01, ***p ≤ 0.001, ****p ≤ 0.0001) Austria (Zuna-Kratky et al 2017) and Central Europe in general (Poniatowski et al 2020) in response to climate warming.…”

Section: Effects Of Grazing Vs Mowing On Orthoptera Assemblagesmentioning

confidence: 99%

To graze or to mow? The influence of grassland management on grasshoppers (Orthoptera) on a flood protection embankment in the Donau-Auen National Park (Austria)

et al. 2021

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Introduction Most Central European grasslands crucially depend on land use, and thus there is a need to comparatively analyse the impacts of different types of land use management on grassland biota. Aims and methods We use grasshoppers (Orthoptera), which are the most important insect herbivores in grasslands, and assess the differences of grazing (sheep) and mowing on species abundance, richness, and composition. We use a river embankment in the National Park Donau Auen as study site, where we have established 28 transects. Orthoptera abundance was surveyed 13 times between May and September 2019 in each transect. Results We recorded 24 Orthoptera species, of which 12 species are listed in the national Red List. The most abundant non-threatened species is Pseudochorthippus parallelus in mown transects, while in grazed transects Euchorthippus declivus is most abundant. Eight of the ten most abundant Orthoptera species differed significantly in abundance between mown and grazed transects. Total abundance of Orthoptera was higher in mown transects, while grazed transects had higher species richness. Most xero-thermophilic species were more abundant in grazed transects, while some species of mesic grassland were more abundant in mown transects. These species-level differences resulted in clearly separated Orthoptera species assemblages between grazed and mown transects. Our findings suggest that the less dense vegetation in grazed transects better fulfilled the habitat requirements of xero-thermophilic species compared to mown transects Discussion Given that mown and grazed transects are located adjacent to each other, that the complete study site was mown for many decades and grazing was only started one year before field data collection, the scale of differences in species richness, composition and abundances between grazed and mown transects is surprising. Thus, our findings indicate that grasshoppers respond rapidly to changing land use. Implications for insect conservation We conclude that river embankments can be important secondary habitats for species-rich grasshopper communities. We recommend that grazing should be continued at the river embankment, ideally as rotational pasture as currently done. Mowing should be changed towards mowing parts of the river embankment at different times and leaving small strips of vegetation unmown.

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“…Recent studies revealed that insect species with low dispersal ability will hardly be able to cope with climate change in fragmented landscapes (Pöyry et al ., 2009; Poniatowski et al ., 2020). According to the low mobility of L. helle (Fischer et al ., 1999), this might especially apply to its central European populations which are mostly restricted to low‐mountain ranges (Kudrna et al ., 2011; Wachlin, 2020).…”

Section: Implications For Conservationmentioning

confidence: 99%

Abandonment of traditional land use and climate change threaten the survival of an endangered relict butterfly species

Scherer

Löffler

Fartmann

2021

Insect Conserv Diversity

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The decline of butterflies exceeds those of many other animal taxa due to their high sensitivity to habitat alterations driven by land‐use change. Moreover, cold‐adapted species frequently suffer severe range retractions due to rising temperatures at their trailing‐edge range margins. In this study, we aim to identify drivers of occupancy of the post‐glacial relict species Lycaena helle at three spatial scales – (i) landscape, (ii) habitat, and (iii) microhabitat – in one of its last refuges in central Europe. In our study in the Eifel low mountain range (western Germany), the occurrence of L. helle was mainly driven by the (i) isolation, (ii) size, and (iii) quality of habitat patches. Lycaena helle formed metapopulations that were dependent on networks of interconnected but often small habitat patches. Habitat quality within the semi‐natural grasslands was determined by (i) macro‐ and mesoclimate, (ii) host‐plant abundance, and (iii) vegetation structure, which was interrelated with microclimate. Lycaena helle preferred moist, nutrient‐poor grasslands in deep, narrow valleys at the highest elevations of the study area, which were characterised by (i) cold winters, (ii) high abundance of the host plant, and (iii) short and sparse swards providing a warm microclimate in summer. According to these findings, abandonment of traditional land use and climate change are considered the most severe threats for long‐term survival of the species. Hence, conservation measures should aim at maintaining and restoring networks of large and well‐connected habitat patches of high quality, preferably in cold‐air depressions within mountain systems.

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Relative impacts of land‐use and climate change on grasshopper range shifts have changed over time

Abstract: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 51 publications

References 64 publications

Distribution Patterns of Grasshoppers and Their Kin over the Eurasian Steppes

Distribution Patterns of Grasshoppers and Their Kin over the Eurasian Steppes

To graze or to mow? The influence of grassland management on grasshoppers (Orthoptera) on a flood protection embankment in the Donau-Auen National Park (Austria)

Abandonment of traditional land use and climate change threaten the survival of an endangered relict butterfly species

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