The composition and richness of Danubian floodplain forest land snail faunas in relation to forest type and flood frequency

Čejka, Tomáš; Horsák, Michal; Némethová, Danka

doi:10.1093/mollus/eym041

Cited by 40 publications

(29 citation statements)

References 26 publications

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“…Finally, previous studies also investigated lowland or floodplain forests (Cameron and Pokryszko 2004, Cameron et al 2006, Čejka et al 2008, some of which host several wetland species, absent or rare in the hilly or montane forests studied by us.…”

Section: Species Richness Abundance and Sampling Efficiencymentioning

confidence: 83%

“…At regional scale, richness is influenced by the size of the area (Rosenzweig 1995), which, in the present study, was smaller than those investigated in other surveys (Cameron et al 2010). Lower regional richness has indeed been found in areas smaller than Tuscany (Cameron and Pokryszko 2004, Cameron et al 2006, Čejka et al 2008, whereas for local richness, no other area had such low numbers of species per site, except Danubian floodplain forests, which are regularly flooded (Čejka et al 2008). There are several reasons that may account for such low species numbers.…”

Section: Species Richness Abundance and Sampling Efficiencymentioning

confidence: 99%

“…A few of them investigated snail assemblages of open habitats in the Aegean region (Cameron et al 2000(Cameron et al , 2003 while the majority focused on forest communities of central, northern and eastern Europe (Cameron and Pokryszko 2004, Čejka et al 2008, Cameron et al 2006, 2010. These faunas differ mainly in their origin: in peninsular Greece and the surrounding islands, snails survived Pleistocene glacial events in situ, whereas European malacofaunas of central and northern regions originated mainly from post-glacial recolonization from southern or extra-Mediterranean refugia (Hausdorf andHennig 2003, Schmitt andVarga 2012).…”

Section: Introductionmentioning

confidence: 99%

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Local and regional scale biodiversity patterns of forest snail assemblages in Tuscany (central Italy)

Benocci¹,

Bacaro²,

Manganelli³

2015

Community Ecology

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Abstract:The land mollusc faunas of three forest areas of Tuscany (central Italy) were sampled to test the effect of geographical and environmental factors on the structure of biodiversity. A total of 60 sites were surveyed in the years 2009-2011, recording species richness and abundance of snails in 400 m 2 plots randomly selected in beech and oak woods. Sampling strategy relied on a combination of visual search and litter analysis. Environmental variables (topsoil pH and altitude) and UTM coordinates were recorded to detect relationships with species richness and number of individuals per plot. Abundance data were analyzed using non-metric multidimensional scaling and canonical correspondence analysis; faunal similarity within and between areas was computed by the Bray Curtis index and snail assemblages of the two forest types were compared. A total of 55 species were recorded, with low values of local richness and abundance per site compared to other forest sites in central and northern Europe. Total richness was similar in the three areas, but composition and local richness varied significantly between them. Geographical factors explained the highest percentage of variance, while habitat type, altitude and pH only accounted for a minor part. Internal similarity was greater than between-area similarity in two out of three areas. Beech forests had richer and more heterogeneous faunas, but lower levels of abundance than oak woods. The results are discussed in terms of historical biogeography and local environmental conditions, and compared with those from similar surveys across Europe. Nomenclature for snails: Manganelli et al. (1995).Abbreviations: AM -Monte Amiata; AP -Alpi Apuane-Garfagnana; CA -Casentino-Alta Valle del Tevere. 148Benocci et al.particularly sensitive to climate change effects, especially increased temperatures, modified rainfall patterns and soil properties (Resco de Dios et al. 2007), factors that can negatively affect the local survival of snails (Pearce and Paustian 2013); thus, describing their biocoenoses can provide valuable insights in monitoring and prevention programs, especially in protected areas. Ecological factors that shape terrestrial snail assemblages have been investigated in central and northern Europe for decades, focusing on single or combinations of environmental parameters (Valovirta 1968, Evans 1972, Martin and Sommer 2004, Horsák 2006, Kappes et al. 2006, Sulikowska-Drozd and Horsák 2007 but such studies are almost completely lacking for Italian land snails (Giusti et al. 2005), except for a paper on acid woodland in the southern Alps (Bishop 1980).Here we report a survey of snail assemblages in three forest areas of Tuscany (Figure 1b), carried out in two habitat types to test the effect of geographical and environmental factors on the structure of biodiversity: such questions have never been addressed before in Italy. Another innovative aspect of this research concerns the selection of plots: in previous studies focused on biodiversity patterns of European land snai...

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Section: Species Richness Abundance and Sampling Efficiencymentioning

confidence: 83%

Section: Species Richness Abundance and Sampling Efficiencymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Local and regional scale biodiversity patterns of forest snail assemblages in Tuscany (central Italy)

Benocci¹,

Bacaro²,

Manganelli³

2015

Community Ecology

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“…The dependence on moisture is known from the studies dealing with snails of various types of temperate woodlands (Wäreborn, 1969;Martin & Sommer, 2004a,b) and was described, together with the frequency of floods, as the key factor affecting for example the species composition and diversity of floodplain vegetation (Schnitzler, 1994) or the floodplain mollusc fauna of the Danube River (Čejka et al, 2008). The poorest mollusc assemblages are living usually in the alder carrs (Horáčková et al, 2014b;Čejka et al, 2008) and/or the willow-poplar softwood forests in starting succession phases, representing the moistest and most flood-affected vegetation types in river floodplains. On the contrary, the richest land-snail assemblages are living in the terminal stages of softwood and transitional forests.…”

Section: Ecological Factors Influencing the Composition Of Floodplainmentioning

confidence: 99%

“…A number of regional studies have been carried out in the area of Central Europe since the second half of the 20 th century (e.g. Ložek, 1955;Bába, 1977;Frank, 1984Frank, , 1985Obrdlík et al, 1995;Čejka, 1999;Čejka et al 2008;Ilg et al 2009;Čejka & Hamerlík, 2009), and part of them were dealed with malacofauna of Czech rivers (e.g. Ložek, 1947;Horsák, 2000;Vašátko et al 2002;Myšák & Horáčková, 2011;Horáčková et al 2011a,b;2013a,b,c;2014a).…”

Section: Introductionmentioning

confidence: 99%

River Floodplains as Habitat and Bio-Corridors for Distribution of Land Snails: Their Past and Present

Horáčková

Podroužková

Juříčková

2015

Journal of Landscape Ecology

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River floodplains of Czech rivers serve as refugia to woodland or hydrophilous gastropods,in current intensively agriculturally utilised, urbanised and largely fragmented landscape. This habitat often form one of the last refuge and replace the natural habitat of these species. River floodplains also represent linear bio-corridors in landscape and allow gastropods to spread through the landscape in both directions, up and down the stream. We showed based on available fossil mollusc successions that development of the floodplain mollusc fauna took place quite different way in various river floodplains, depending on their specifics and geographical location, because especially the ones situated in the chernozem area of the Czech Republic had very different history in comparison with those in higher altitudes. The species richness and composition of recent floodplain malacofauna arises from historical development of particular area/site and depends also on environmental factors such as an elevation, humidity gradient, vegetation type and its biomass, light conditions of the site and soil reaction. Recently, the invasive plants represent a serious problem for current floodplain ecosystems; species richness and abundances of terrestrial mollusc floodplain assemblages are changing due to their effect. The impact on gastropods is species-specific and was described for the following species: Impatiens glandulifera, Fallopia japonica subsp. japonica, F. sachalinensis, F. ×bohemica.

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Hydrological Gradient and Species Traits Explain Gastropod Diversity in Floodplain Grasslands

Ilg

Foeckler²,

Deichner³

et al. 2011

River Research & Apps

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Floodplains are characterized by high spatial and temporal heterogeneity. Despite low active mobility, Central European floodplain gastropod communities show a high species diversity. They are supposed to have developed a large range of resistance and/or resilience strategies to survive in the highly variable and frequently disturbed floodplain habitats. Relating gastropod diversity and species traits to hydrological conditions, we tested how different groundwater and flood regimes affect gastropod diversity and identified the main species traits favouring their survival in highly dynamic floodplain grasslands. Species richness, species diversity and functional diversity peaked at intermediate flood disturbance and moisture levels. Harsher environmental conditions in either dryer or frequently flooded habitats restricted the gastropod communities to a few specialized species. Morphological and life‐history traits showed significant variations along the hydrological gradient. Shell character and mode of reproduction proved to be important functional determinants for gastropod community composition. Species with strongly calcified shells, which limit the risk of injuries in case of dislodgment, were more often found in flood prone sites. Uniparental reproduction dominated in the driest as well as in highly flood‐disturbed habitats, providing reproductive assurance where harsh environmental conditions may reduce the number of potential mates. Intermediate disturbance and moisture levels favoured local gastropod diversity whereas dryer or highly flood‐disturbed habitats sheltered specialized species. Therefore, the maintenance of areas with different disturbance and moisture levels is of major importance in favouring taxonomical and functional mollusc diversity across the whole floodplain. Copyright © 2011 John Wiley & Sons, Ltd.

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The composition and richness of Danubian floodplain forest land snail faunas in relation to forest type and flood frequency

Cited by 40 publications

References 26 publications

Local and regional scale biodiversity patterns of forest snail assemblages in Tuscany (central Italy)

Local and regional scale biodiversity patterns of forest snail assemblages in Tuscany (central Italy)

River Floodplains as Habitat and Bio-Corridors for Distribution of Land Snails: Their Past and Present

Hydrological Gradient and Species Traits Explain Gastropod Diversity in Floodplain Grasslands

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