Phylogeny, species delimitation and population structure of the steppe-inhabiting land snail genusHelicopsisin Eastern Europe

Balashov, Igor; Neiber, Marco T.; Hausdorf, Bernhard

doi:10.1093/zoolinnean/zlaa156

Cited by 7 publications

(3 citation statements)

References 44 publications

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“…A lot of investigation was carried out on habitat preference by terrestrial snails on a broad scale level [37][38][39][40][41][42][43][44]. Humidity and available calcium content were found to be the most significant ecological drivers controlling the species richness and composition of terrestrial mollusk communities [45].…”

Section: Discussionmentioning

confidence: 99%

Spatial distribution of micromollusks under the impact of recreation

Кунах

Umerova

Degtyarenko

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Anthropogenic impacts lead to a decrease in the abundance and diversity of communities of living organisms. The rate of recovery of populations is inversely proportional to size: the smaller the size, the greater the potential for population recovery after negative impact. Therefore, under conditions of extremely high levels of anthropogenic impact, small-sized animals are a reliable source of ecosystem state. The aim of the work is to: 1) to evaluate rates of the micromollusc Vallonia pulchella (Müller, 1774) abundance in ecosystems that are subject to extremely high levels of recreational pressure; 2) to identify factors that influence the spatial patterns of soil micromollusks; and 3) to investigate the possibility of using micromollusks for the purposes of bioindication of recreational pressure. The soil sampling was performed on a regular grid with recording of local coordinates. The micromollusks were extracted from the soil samples by hand sorting. Physical properties of soil sensitive to recreational load were also measured. Micromolluscs were found to exhibit a non-linear response to recreational impact. The maximum abundance of animals is observed at a certain distance from recreational trails. This distance is specific for different species of micromollusks. Micromollusks have high population abundance even under conditions of high recreational load. The regular spatial patterns of these animals are caused by changes in the soil habitat, which are induced by recreational load. This circumstance allows to consider micromollusks as a reliable indicator of the level of recreational load.

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Section: Discussionmentioning

confidence: 99%

Spatial distribution of micromollusks under the impact of recreation

Кунах

Umerova

Degtyarenko

2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…These are also open steppes and forest-steppes (e.g. the Pannonian Steppe), where the native malacofauna includes mostly the same xerophilous species [Bába, 1989;Balashov et al, 2020]. In addition, these open steppe biotopes are inhabited by certain Balkan species, for example, Xerolenta obvia (Menke, 1828), the range of which extends to the Podolsk Upland [Balashov, 2016].…”

Section: Discussionmentioning

confidence: 99%

Land snails Brephulopsis cylindrica and Xeropicta derbentina (Gastropoda: Stylommatophora): case study of invasive species distribution modelling

2022

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The terrestrial snails Brephulopsis cylindrica and Xeropicta derbentina are native to steppes of the Northern Black Sea region; X. derbentina has also initially inhabited Eastern Mediterranean, the Caucasus, and Anatolia. However, in last decades the species are increasingly reported outside of their natural range which renders them as likely invasive. The paper aims to assess the ecological suitability of adjacent habitats in terms of the molluscs invasion. We address this using species distribution modelling (SDM). The selected environment predictors for SDM included 22 environment factors such as land cover, enhanced vegetation index (EVI), altitude, and 19 bioclimatic parameters. The resulted model suggests that the area with maximum suitability extends from the natural range to the Central Danube lowland in the West and up to the Volga Upland in the Northeast. These regions have similar EVI and are largely croplands. Among the predictors, the minimum temperature of the coldest month has the greatest impact on the modelling results, which agrees with the variable being the limiting factor for the distribution of subtropical invertebrates. The study reinforces the notions that X. derbentina and B. cylindrica are likely to further expand the boundaries of their range thus posing threats to native ecosystems.

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“…Numerous studies have examined habitat preference and the effects of environmental factors on snails at the macroscale level (Karlin, 1961;Horsák & Hájek, 2003;Horsák et al, 2007;Sulikowska-Drozd & Horsák, 2007;Santos et al, 2012;Moreno-Rueda, 2014;Książkiewicz & Gołdyn, 2015;Balashov et al, 2020). The moisture and available calcium content are the most important environmental factors controlling the species richness and composition of terrestrial mollusc communities (Čejka & Hamerlík, 2009;Brygadyrenko, 2014).…”

Section: Introductionmentioning

confidence: 99%

Impact of recreational transformation of soil physical properties on micromolluscs in an urban park

et al. 2021

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The paper assesses the effect of transformation of soil physical properties on the abundance of micromolluscs in the conditions of an urban park. The studies were carried out in Novooleksandrivskiy Park (Melitopol, Ukraine). An experimental polygon was represented by 7 transects with 18 sampling points in each. The interval between the points in the transect, as well as the interval between transects, was 3 meters. The total area of the polygon was 1,134 m2. The tree species growing within the polygon were Quercus robur, Sophora japonica, and Acer campestre. Shrubs were represented by Ulmus laevis, Tilia cordata, Celtis occidentalis, and Morus nigra. The locations of the trees and shrubs were mapped. The crowns of tree and shrub plants formed a dense canopy and a shady light regime. The grass cover was practically absent. The soil mechanical resistance, soil aggregate-size distribution, electrical conductivity of soil, soil moisture and bulk density were measured. We recorded 618 individuals of Vallonia pulchella, 120 individuals of Cochlicopa lubrica, and 58 individuals of Acanthinula aculeata within the surveyed polygon. We extracted three principal components, which could explain 60.9% of the variation in the feature space of the soil properties. The principal component 1 explained 42.0% of the variation of the feature space and depended on the soil penetration resistance throughout the whole profile, aggregate composition, density, electric conductivity and moisture content of soil. This component reflected a tendency for soil penetration resistance and soil density to increase near recreational trails. The principal component 1 was used to indicate the gradient of recreational transformation of the soil. The principal component 2 was able to explain 10.6% of the variation in the feature space. It negatively correlated with the distance from the recreational trail, soil penetration resistance at the depth of 35 cm or more, soil electrical conductivity, and the proportion of aggregates greater than 3 mm in size. This component positively correlated with soil penetration resistance at 0–5 cm depth and the proportion of aggregates less than 0.5 mm in size. This component can be interpreted as a "halo" from the recreational trail, or a gradient of indirect soil transformations adjacent to the zone of intense recreational load. The principal component 3 was able to explain 8.3% of the variation in the feature space. It positively correlated with soil penetration resistance at the depth of 20–40 cm, the proportion of 0.5–7.0 mm aggregates, and soil moisture. It negatively correlated with the proportion of aggregates larger than 7 mm and smaller than 0.25 mm. This component indicated a variation in soil properties that was induced by causes independent of recreational exposure. The extracted gradients of soil properties significantly influenced the abundance of micromollusc populations. The abundance of all species decreased after increase in recreational load. Micromollusc species responded to direct recreational exposure as plateau (C. lubrica) and asymmetric unimodal responses (V. pulchella and A. aculeata).

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Phylogeny, species delimitation and population structure of the steppe-inhabiting land snail genusHelicopsisin Eastern Europe

Cited by 7 publications

References 44 publications

Spatial distribution of micromollusks under the impact of recreation

Spatial distribution of micromollusks under the impact of recreation

Land snails <i>Brephulopsis cylindrica </i>and <i>Xeropicta derbentina </i>(Gastropoda: Stylommatophora): case study of invasive species distribution modelling

Impact of recreational transformation of soil physical properties on micromolluscs in an urban park

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