A low seasonality scenario in the Mediterranean Sea during the Calabrian (Early Pleistocene) inferred from fossil Arctica islandica shells

Oxygen Isotope Composition of Arctica islandica Aragonite in the Context of Shell Architectural Organization: Implications for Paleoclimate Reconstructions

“…This has been confirmed by observations and experimental studies with shells of a variety of bivalve species (e.g., Grossman & Ku, 1986;Owen et al, 2002;Wanamaker et al, 2006). Shell-based water temperature reconstructions are increasingly used in environmental research with applications in modern times (e.g., Mette et al, 2016;Sch€ one et al, 2004Sch€ one et al, , 2005Watanabe & Oba, 1999) and the distant past (e.g., Beierlein et al, 2015;Ivany & Runnegar, 2010;von Leesen et al, 2017).…”

“…In sclerochronological studies, seasonal oxygen isotope profiles are commonly used in paleotemperature reconstructions (e.g., Beierlein et al, 2015;Sch€ one et al, 2004Sch€ one et al, , 2005von Leesen et al, 2017) . Our results suggest that the use of isotope profiles from the microstructurally different shell layers might affect estimated temperatures.…”

Toward the Morphometric Calibration of the Environmental Biorecorder Arctica islandica

“…Eventually the outcome of complex interactions of many factors may cause the apparent morphological similarity, as described in several studies (e.g., Bataller, Boghen, and Burt, 1999;Lohmann and Schöne, 2013;Witbaard, Jansma, and Sass Klaassen, 2003). Local environment forcing such as salinity, temperature, and soft bottom sediment (Von Leesen et al, 2017) and food (Ballesta-Artero et al, 2018) is assumed to be the major reason for the coordination/harmony between populations. Therefore, and owing to an understanding of the underlying mechanisms, soft bottom morphology must be taken into account in future relevant research.…”

“…Recently, longevity of A. islandica was the focus of interest in this species: on the one hand, physiologists study the cellular mechanisms of ageing (Abele et al, 2008;Strahl et al, 2007); on the other hand climatologists and ecologists are interested in the calcareous archive provided by the shell that contains morphological and biogeochemical information on past environmental conditions (Bonitz et al, 2018;Lohmann and Schöne, 2013;Marali and Schöne, 2015;Milano et al, 2017). It is important for determining which conditions will assist conservation managers in their global effort to calibrate this biorecorder species and to predict the future environmental scenario (e.g., Finkl and Makowski, 2015;Makowski, Finkl, and Rusenko, 2013;Makowski, Seminoff, and Salmon, 2006;Von Leesen et al, 2017).…”

Palaeoclimatic and palaeoenvironmental evolution of the Lower Pleistocene Arda River succession

“…The Mediterranean area was affected by these Pleistocene climate changes in both marine and continental settings (e.g., Bertini, 2010;Fusco, 2010;Scarponi et al, 2014;Combourieu-Nebout et al, 2015;Crippa et al, 2016a;Capraro et al, 2017;von Leesen et al, 2017). In the marine environment the most significant biotic events are represented by the disappearance of taxa of subtropical affinity and the occurrence of "northern guests".…”