The secondary invasion of giant African land snail has little impact on litter or seedling dynamics in rainforest

2017 ◽  
Vol 42 (7) ◽  
pp. 819-830 ◽  
Author(s):  
Luke S. O'Loughlin ◽  
Peter T. Green
Keyword(s):  
Land Snail ◽  
Secondary Invasion ◽  
Seedling Dynamics

HOLOCENE LAND SNAIL BODY SIZE CHANGE IN ALGERIA, NW AFRICA, AND ITS POSSIBLE CAUSES

2017 ◽  
Author(s):  
Nora Soto ◽  
◽  
Yurena Yanes ◽  
David Lubell
Keyword(s):  
Body Size ◽  
Land Snail ◽  
Size Change

scholarly journals The δ13C, δ18O and Δ47 records in biogenic, pedogenic and geogenic carbonate types from paleosol-loess sequence and their paleoenvironmental meaning

2021 ◽  
pp. 1-17
Author(s):  
Kazem Zamanian ◽  
Alex R. Lechler ◽  
Andrew J. Schauer ◽  
Yakov Kuzyakov ◽  
Katharine W. Huntington
Keyword(s):  
Land Snail ◽  
Isotopic Signature ◽  
Sediment Layer ◽  
Isotopic Signatures ◽  
Pedogenic Carbonates ◽  
Rhine Valley ◽  
Clumped Isotope ◽  
Time Specific ◽  
Sediment Layers ◽  
Paleoenvironmental Reconstructions

Abstract Paleoenvironmental reconstructions are commonly based on isotopic signatures of a variety of carbonate types, including rhizoliths and land-snail shells, present in paleosol-loess sequences. However, various carbonate types are formed through distinct biotic and abiotic processes over various periods, and therefore may record diverging environmental information in the same sedimentological layer. Here, we investigate the effects of carbonate type on δ13C, δ18O, and clumped isotope-derived paleotemperature [T(Δ47)] from the Quaternary Nussloch paleosol-loess sequence (Rhine Valley, SW Germany). δ13C, δ18O, and T(Δ47) values of co-occurring rhizoliths (-8.2‰ to -5.8‰, -6.1‰ to -5.9‰, 12–32°C, respectively), loess dolls (-7.0‰, -5.6‰, 23°C), land-snail shells (-8.1‰ to -3.2‰, -4.0‰ to -2.2‰, 12–38°C), earthworm biospheroliths (-11‰, -4.7‰, 8°C), and “bulk” carbonates (-1.9‰ to -0.5‰, -5.6‰ to -5.3‰, 78–120°C) from three sediment layers depend systematically on the carbonate type, admixture from geogenic carbonate, and the duration of formation periods. Based on these findings, we provide a comprehensive summary for the application of the three isotopic proxies of δ13C, δ18O, and Δ47 in biogenic and pedogenic carbonates present in the same sediment layer to reconstruct paleoenvironments (e.g., local vegetation, evaporative conditions, and temperature). We conclude that bulk carbonates in Nussloch loess should be excluded from paleoenvironmental reconstructions. Instead, pedogenic and biogenic carbonates should be used to provide context for interpreting the isotopic signature for detailed site- and time-specific paleoenvironmental information.

QuEChERS applicability to measure land snail polycyclic aromatic hydrocarbons for risk assessment

2020 ◽  
Vol 102 (5-6) ◽  
pp. 209-223
Author(s):  
Nadia Morin-Crini ◽  
Maxime Louzon ◽  
Caroline Amiot ◽  
Annette de Vaufleury
Keyword(s):  
Risk Assessment ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Land Snail ◽  
Polycyclic Aromatic

scholarly journals Deep genetic structure at a small spatial scale in the endangered land snail Xerocrassa montserratensis

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Cristina Català ◽  
Vicenç Bros ◽  
Xavier Castelltort ◽  
Xavier Santos ◽  
Marta Pascual
Keyword(s):  
Genetic Structure ◽  
Land Snail ◽  
Snail Species ◽  
Small Spatial Scale ◽  
Geographic Ranges ◽  
Genetic Groups ◽  
Species Of Conservation Concern ◽  
Conservation Actions ◽  
Conservation Concern ◽  
Single Locality

AbstractSpecies with small geographic ranges do not tend to have a high genetic structure, but some land snail species seem to be an exception. Xerocrassa montserratensis, an endangered land snail endemic to Catalonia (northeastern Iberian Peninsula), is an excellent model to study the processes affecting the phylogeography of specialized species of conservation concern. This species is restricted to xerophilous stony slopes and occurs within a small and fragmented area of ca. 500 km2. We sequenced the COI barcode region of 152 individuals from eight sites covering the entire range of the species. We found four genetic groups mostly coincident with their geographic distribution: a central ancestral group containing shared haplotypes among five localities and three groups restricted to a single locality each. Two of these derived groups were geographically and genetically isolated, while the third and most differentiated group was not geographically isolated. Geomorphologic and paleoclimatic processes during the Pleistocene can explain the divergence found between populations of this low dispersal species with historical fragmentation and secondary contacts. Nonetheless, recent passive large dispersal through streams was also detected in the central group. Overall, our study uncovered four evolutionary units, partially matching morphologically described subspecies, which should be considered in future conservation actions.

scholarly journals Land-snail eggs as a proxy of abrupt climatic cooling events during the reproductive season

2021 ◽  
Author(s):  
Fengjiang Li ◽  
Naiqin Wu ◽  
Yajie Dong ◽  
Dan Zhang ◽  
Yueting Zhang ◽  
...  
Keyword(s):  
Land Snail ◽  
Reproductive Season ◽  
Climatic Cooling

Mitochondrial Phylogeography of the Land Snail Albinaria in Crete: Long- Term Geolgoical and Short-Term Vicariance Effects

Evolution ◽  
1998 ◽  
Vol 52 (1) ◽  
pp. 116 ◽  
Author(s):  
Vassilis Douris ◽  
Robert A. D. Cameron ◽  
George C. Rodakis ◽  
Rena Lecanidou
Keyword(s):  
Land Snail ◽  
Short Term

scholarly journals Fecundity in the hermaphroditic land snail Succinea putris (Pulmonata: Succineidae): does body size matter?

2010 ◽  
Vol 76 (4) ◽  
pp. 376-383 ◽  
Author(s):  
L. Dillen ◽  
K. Jordaens ◽  
L. De Bruyn ◽  
T. Backeljau
Keyword(s):  
Body Size ◽  
Land Snail ◽  
Size Matter

Differential land snail damage to selected species of the lichen genus Peltigera

2004 ◽  
Vol 32 (2) ◽  
pp. 127-138 ◽  
Author(s):  
Renato Benesperi ◽  
Mauro Tretiach
Keyword(s):  
Land Snail
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