Glacier foreland insect uptake synthetic compounds: an emerging environmental concern

Lencioni, Valeria; Rizzi, Cristiana; Gobbi, Mauro; Mustoni, Andrea; Villa, Sara

doi:10.1007/s11356-023-30387-x

Environ Sci Pollut Res

2023

DOI: 10.1007/s11356-023-30387-x

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Glacier foreland insect uptake synthetic compounds: an emerging environmental concern

Valeria Lencioni,

Cristiana Rizzi,

Mauro Gobbi

et al.

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2024

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Cited by 2 publications

References 80 publications

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Rock glacier springs: cool habitats for species on the edge

Martini,

Brighenti,

Vanek

et al. 2024

Biodivers Conserv

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Under climate change, glacier recession and the loss of cold habitats are major threats to aquatic biodiversity. In mountain areas, streams originating from rock glaciers, called “icy seeps”, may represent climate refugia for cold-adapted organisms, given the major persistence of cold waters from these landforms even in unfavourable climates. During late summer 2021, we investigated discharge, turbidity, water chemistry (major ions and trace elements), stable water isotopes (δ18O, δ2H), and macroinvertebrate communities of five rock glacier springs (icy seeps), five glacier springs (glacier springs) and five non-glacial springs (spring brooks) in catchments of the Eastern Italian Alps. In icy seeps, meltwater contribution to runoff (estimated with end-member mixing models) was intermediate between those of the other two spring types. Icy seeps had very cold waters (< 1.5 °C) that were enriched in trace elements, like glacier springs, whereas discharge and turbidity were low, like in spring brooks. Community composition, diversity, and species associations of icy seeps were strongly related to a gradient of chemical harshness (built using trace element concentrations), with less contaminated springs hosting communities like those dwelling in spring brooks. Like glacier springs, those icy seeps with the harshest water chemistry (particularly because of Ni concentrations) and higher meltwater contribution hosted species (e.g., Diamesa steinboecki) that are currently in decline due to glacier loss. This suggests a high conservation value for icy seeps. The protection of these habitats, nowadays overlooked, will be fundamental under the progressive warming and dry-out risk of alpine springs.

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Rock glacier springs: cool habitats for species on the edge

Martini,

Brighenti,

Vanek

et al. 2024

Biodivers Conserv

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Revisiting European and Asian Diamesa species (Diptera: Chironomidae: Diamesinae): morphological and molecular insights

Lencioni,

Prat,

Paoli

et al. 2024

Zoological Journal of the Linnean Society

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Diamesa is a cold-adapted genus of Diptera: Chironomidae colonizing cold freshwaters of the Northern Hemisphere and East Africa. Global warming and glacier shrinkage are threatening their survival. In this work, we aimed to provide new insights into taxonomical gaps and phylogeny of Diamesa species from the Pyrenees, Alps, and Karakorum mountains to understand the colonization processes better and have a more accurate count of the number of endangered species. An incongruence between morphological identification and DNA barcoding (COI) was highlighted, suggesting the need for other approaches combined to estimate genetic distance. We reconstructed the phylogeny of the Palaearctic, using molecular data from two nuclear (CADI and CADIV) and three mitochondrial (COI and COII and 16S) genes. We emphasized that: (i) the Diamesa steinboecki group shares with the common ancestor of the other Diamesa species a strong cold adaptation; (ii) the European and Asian species belonging to the steinboecki group separated from each other during the Miocene (~15 Mya); and (iii) the major diversification of species in the Alps occurred during the Plio-Pleistocene epochs, mainly during the alternation of glacial and interglacial periods. This confirms the strong relationship between species evolution and climate change.

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Glacier foreland insect uptake synthetic compounds: an emerging environmental concern

Cited by 2 publications

References 80 publications

Rock glacier springs: cool habitats for species on the edge

Rock glacier springs: cool habitats for species on the edge

Revisiting European and Asian Diamesa species (Diptera: Chironomidae: Diamesinae): morphological and molecular insights

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