Long‐term species loss and homogenization of moth communities in Central Europe

Valtonen, Anu; Hirka, Anikó; Szőcs, Levente; Ayres, Matthew P.; Roininen, Heikki; Csóka, György

doi:10.1111/1365-2656.12687

Cited by 57 publications

(47 citation statements)

References 65 publications

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“…Several studied biogeoregions, realms and biotic groups showed no significant trends in biodiversity metrics. Other studies on local changes in biodiversity also detected no overall changes 5,22,34 in apparent contradiction to the documented global-scale biodiversity loss (e.g. IPBES 4 ).…”

Section: Discussionmentioning

confidence: 79%

Meta-analysis of multidecadal biodiversity trends in Europe

et al. 2020

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Local biodiversity trends over time are likely to be decoupled from global trends, as local processes may compensate or counteract global change. We analyze 161 long-term biological time series (15-91 years) collected across Europe, using a comprehensive dataset comprising 6,200 marine, freshwater and terrestrial taxa. We test whether (i) local long-term biodiversity trends are consistent among biogeoregions, realms and taxonomic groups, and (ii) changes in biodiversity correlate with regional climate and local conditions. Our results reveal that local trends of abundance, richness and diversity differ among biogeoregions, realms and taxonomic groups, demonstrating that biodiversity changes at local scale are often complex and cannot be easily generalized. However, we find increases in richness and abundance with increasing temperature and naturalness as well as a clear spatial pattern in changes in community composition (i.e. temporal taxonomic turnover) in most biogeoregions of Northern and Eastern Europe.

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Section: Discussionmentioning

confidence: 79%

Meta-analysis of multidecadal biodiversity trends in Europe

et al. 2020

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“…; Valtonen et al. ) as well as in other parts of the world (Lister & Garcia ). If widespread, such declines would potentially affect many other species that, directly or indirectly, depend on insects in the ecosystem.…”

Section: Introductionmentioning

confidence: 99%

“…Palabras Clave: bioindicadores, cambio climático, declinaciones de insectos, intensificación agrícola, tendencias poblacionales Introduction Declines in insect abundance have been reported in many locations within Europe (e.g., Thomas et al 2004;Conrad et al 2006;Hallmann et al 2017;Valtonen et al 2017) as well as in other parts of the world (Lister & Garcia 2018). If widespread, such declines would potentially affect many other species that, directly or indirectly, depend on insects in the ecosystem.…”

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confidence: 99%

Long‐term declines of European insectivorous bird populations and potential causes

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Heldbjerg

Fox

et al. 2019

Conservation Biology

239

168

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Evidence of declines in insect populations has recently received considerable scientific and societal attention. However, the lack of long‐term insect monitoring makes it difficult to assess whether declines are geographically widespread. By contrast, bird populations are well monitored and often used as indicators of environmental change. We compared the population trends of European insectivorous birds with those of other birds to assess whether patterns in bird population trends were consistent with declines of insects. We further examined whether declines were evident for insectivores with different habitats, foraging strata, and other ecological preferences. Bird population trends were estimated for Europe (1990–2015) and Denmark (1990–2016). On average, insectivores declined over the study period (13% across Europe and 28% in Denmark), whereas omnivores had stable populations. Seedeaters also declined (28% across Europe; 34% in Denmark), but this assessment was based on fewer species than for other groups. The effects of insectivory were stronger for farmland species (especially grassland species), for ground feeders, and for cold‐adapted species. Insectivory was associated with long‐distance migration, which was also linked to population declines. However, many insectivores had stable populations, especially habitat generalists. Our findings suggest that the decline of insectivores is primarily associated with agricultural intensification and loss of grassland habitat. The loss of both seed and insect specialists indicates an overall trend toward bird communities dominated by diet generalists.

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“…Recent studies suggest long-term declines of insect populations in different parts of Europe (Conrad et al 2006;Hallmann et al 2017;Valtonen et al 2017;Homburg et al 2019). Such declines are a major conservation concern, especially because they could have a broad range of cascading effects for other species (Hallmann et al 2014;Cardoso et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Winners and losers over 35 years of dragonfly and damselfly distributional change in Germany

Bowler

Eichenberg

Conze

et al. 2020

Preprint

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Recent studies suggest insect declines in parts of Europe; however, the generality of these trends across different taxa and regions remains unclear. Standardized data are not available to assess large-scale, long-term changes for most insect groups but opportunistic citizen science data is widespread for some taxa. We compiled over 1 million occurrence records of Odonata (dragonflies and damselflies) from different regional databases across Germany. We used occupancy-detection models to estimate annual distributional changes between 1980 and 2016 for each species. We related species attributes to changes in the species distributions and inferred possible drivers of change. Species showing increases were generally warm-adapted species and/or running water species while species showing decreases were cold-adapted species using standing water habitats such as bogs. We developed a novel approach using time-series clustering to identify groups of species with similar patterns of temporal change. Using this method, we defined five typical patterns of change for Odonata, each associated with a specific combination of species attributes. Overall, trends in Odonata provide mixed news since improved water quality, coupled with positive impacts of climate change, could explain the positive trend status of many species. At the same time, declining species point to conservation challenges associated with habitat loss and degradation. Our study demonstrates the great value of citizen science data for assessing large-scale distributional change and conservation decision-making.

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Long‐term species loss and homogenization of moth communities in Central Europe

Cited by 57 publications

References 65 publications

Meta-analysis of multidecadal biodiversity trends in Europe

Meta-analysis of multidecadal biodiversity trends in Europe

Long‐term declines of European insectivorous bird populations and potential causes

Winners and losers over 35 years of dragonfly and damselfly distributional change in Germany

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