Results 81 to 90 of about 33,023 (219)

Cave Palaeolithic of the Ural Mountains – a review

open access: yesBoreas, EarlyView.
The Ural Mountains are of fundamental importance for studying early human migrations along the geographical limits between Europe and Asia. Geological processes and past climates gave rise to numerous caves, mostly in Palaeozoic carbonate formations.
Jiri Chlachula
wiley   +1 more source

Persistence and dynamic of forest snails in the Western Carpathians over the last 40 thousand years

open access: yesBoreas, EarlyView.
The glacial/interglacial cycles have shaped the landscape of temperate Europe for the past 2.5 million years, with open landscapes prevailing during the glacial and forested landscapes during the interglacial periods. However, the survival and recolonization strategies of temperate forest species during glacial phases remain poorly understood and hotly
Lucie Juřičková   +5 more
wiley   +1 more source

Untangling nutrient co‐regulation of ombrotrophic peatland development

open access: yesBoreas, EarlyView.
Multi‐method (FTIR, FT‐NIR and TGA) approaches characterizing the organic peat constituents at Holcroft Moss reveal a record of switches that reflect broadly hydroclimate variability governing the decomposition patterns. There are periods, however, where hydroclimate does not fully explain the variability observed and instead changes appear linked to ...
Richard C. Chiverrell   +6 more
wiley   +1 more source

Clustering crocodylian dental morphology: Insights into functional adaptations, diet, and ontogeny

open access: yesJournal of Anatomy, EarlyView.
Extant crocodylians may be divided into five clusters based on the residuals of four linear dental measurements (y‐axes) and their variation along the jaw (x‐axes). These clusters correlate to snout shape, prey preference, and feeding ecology, particularly prey size and the degree of processing necessary. Multiple families and subfamilies were found in
Jason J. Testin, Domenic C. D'Amore
wiley   +1 more source

The Triassic-Jurassic boundary in the Andes of Argentina [PDF]

open access: yes, 2004
The Arroyo Malo Formation at Alumbre Creek, on the northern bank of the Atuel River, west central Argentina, comprises a c. 300 m thick continuous marine succession across the Triassic-Jurassic System boundary, consisting of massive and laminated pelites
Damborenea, Susana Ester   +3 more
core   +4 more sources

The origin and evolution of air sacs in pterosaurs and their forerunners

open access: yesJournal of Anatomy, EarlyView.
Pneumatized pterosauromorph vertebrae and their phylogenetic context. Abstract Although the existence of postcranial pneumaticity and the inferred presence of air sacs connected to the lungs are well established in Pterosauria, the origin of this system in pterosaurs remains unclear. We investigated skeletal pneumaticity in the Triassic pterosauromorph
Tito Aureliano   +4 more
wiley   +1 more source

Evidence for Badenian local sea level changes in the proximal area of the North Croatian Basin

open access: yesGeologia Croatica, 2010
Quantitative analysis of palynomorphs, foraminifera and ostracods enabled the recognition of biotic events and the reconstruction of environmental change in the Badenian sediments from the Vrhovčak section of Mt. Samoborsko gorje (NW Croatia). During the
Koraljka Bakrač   +5 more
doaj   +1 more source

Ash grains of the 1991 Mt. Pinatubo eruption as a tracer in Rose Bengal stained deep sea agglutinated foraminifera: How old is Freddy? [PDF]

open access: yes, 2001
The use of volcanic ash particles (including dark-coloured grains) by agglutinated foraminifera that survived the 1991 eruption of Mt Pinatubo volcano provides a useful tracer to help determine growth rates and longevity in the deep sea. In the case of a
Hess, S.   +4 more
core  

Species‐environment relationships of coastal diatoms from the Sept‐Îles region, Gulf of St‐Lawrence (Québec, Canada)

open access: yesJournal of Phycology, EarlyView.
Abstract As climate change is having increasingly visible impacts on coastal regions, it is urgent to better understand its effects on the state of ecosystems and the services they provide. To assess the direction and magnitude of change in the high‐use waters of the Sept‐Îles region in the Gulf of St‐Lawrence, we sampled 35 sites along the coast and ...
Emilie Arseneault   +1 more
wiley   +1 more source

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