Just out @ Journal of Paleolimnology Reconstructing recent environmental changes using non-biting midges (Diptera: Chironomidae) in two high mountain lakes from northern Patagonia, Argentina Author(s) Fernanda Montes de Oca, Luciana Motta, María Sofía Plastani, Cecilia Laprida, Andrea Lami, Julieta Massaferro Abstract: Remote lakes of northern Patagonia are ideal sites for examining climate- and non-climate-driven changes in aquatic ecosystems because there is little evidence of human influence and there is no detailed
Just out @ Journal of Biogeography The southern coastal Beringian land bridge: cryptic refugium or pseudorefugium for woody plants during the Last Glacial Maximum? Author(s) Yue Wang, Peter D. Heintzman, Lee Newsom, Nancy H. Bigelow, Matthew J. Wooller, Beth Shapiro, John W. Williams Abstract: Aim The Bering Land Bridge (BLB) connected Asia and North America during glacial periods, supported a diverse ecosystem of now-vanished megafauna, and is a proposed glacial refugium.
Just out @ Marine Micropaleontology Late Pleistocene-Holocene variability in the southern Gulf of Mexico surface waters based on planktonic foraminiferal assemblages Author(s) Elsa Arellano-Torres, María Luisa Machain-Castillo Abstract: Planktonic foraminiferal assemblages are used as proxies of surface ocean variations, as documented in five marine sediment cores from the Bay of Campeche (BoC), Gulf of Mexico (GoM), spanning the last 34,000 cal yrs BP. This paper seeks to better understand the regional history by
Just out @ Lethaia Strontium stratigraphy of the upper Miocene Lithothamnion Limestone in the Majella Mountain, central Italy, and its palaeoenvironmental implications Author(s) Irene Cornacchia, Per Andersson, Samuele Agostini, Marco Brandano, Letizia Di Bella Abstract: The 87Sr/86Sr isotope ratio has been widely used as a physical tool to date and correlate carbonate successions due to the long Sr residence time in comparison with the ocean mixing time. If this method
Just out @ Historical Biology Siliciclastic input and sedimentation rate as controls on paleoecological distribution of Lower Miocene benthic carbonate producers in a fan–delta: Zagros foreland basin, Iran Author(s) Amir Hossein Rahiminejad, Mehdi Yazdi, Ali Reza Ashouri & Abdolhossein Kangazian Abstract: This paper aimed to study Lower Miocene (Burdigalian) mixed carbonate–siliciclastic deposits within an Upper Cenozoic synorogenic conglomerate–dominated succession in north of Shalamzar in the Zagros foreland basin, Iran. The
Just out @ The Holocene Woodland dynamics and use during the Bronze Age: New evidence from Irish archaeological charcoal Author(s) Lorna O’Donnell Abstract: Swathes of roads and pipelines cut through the Irish landscape during the ‘Celtic Tiger’ years (approximately 1994–2008) leading to an unprecedented number of archaeological excavations and creating a unique opportunity for extensive research of past landscapes on a broad scale. The vast quantities of bulk soil samples
Just out @ Palaeogeography, Palaeoclimatology, Palaeoecology Faunal dietary response to the Heinrich Event 4 in southwestern Europe Author(s) Florent Rivals, Antigone Uzunidis, Montserrat Sanz, Joan Daura Abstract: The dietary traits of the ungulates from the Canyars assemblage (Late Pleistocene; Gavà, Barcelona, Spain) are analysed through tooth mesowear and microwear to study their feeding behaviour as well as the climatic conditions during the time of the arrival of the early modern Europeans
Just out @ Proceedings of the Royal Society B Title: Surrogate taxa and fossils as reliable proxies of spatial biodiversity patterns in marine benthic communities Author(s): Carrie L. Tyler, Michał Kowalewski Abstract: Rigorous documentation of spatial heterogeneity (β-diversity) in present-day and preindustrial ecosystems is required to assess how marine communities respond to environmental and anthropogenic drivers. However, the overwhelming majority of contemporary and palaeontological assessments have centred on single higher taxa.
The use of organic proxies as a way of reconstructing ancient climates and environmental conditions is well-established in paleoclimatology, paleoecology, and paleogeography. The measurement of stable isotopes and trace metals in microfossil shells are, for example, one of the most recurrent techniques used to assess the geochemical conditions of early ecosystems and the configuration of ancient ecotones. Simply put, the environmental conditions upon which early microorganisms have developed influence the geochemical