Results 61 to 70 of about 240,870 (365)

Major Δ14C excursions during the late glacial and early Holocene: changes in ocean ventilation or solar forcing of climate change? [PDF]

open access: yes, 2003
The atmospheric 14C record during the Late Glacial and the early Holocene shows sharp increases simultaneous with cold climatic phases. These increases in the atmospheric 14C content are usually explained as the effect of reduced oceanic CO2 ventilation ...
Geel, Bas van,   +2 more
core   +3 more sources

Islandinium pacificum sp. nov., a new dinoflagellate cyst from the upper Quaternary of the northeast Pacific [PDF]

open access: yes, 2020
Round brown process-bearing cysts (RBPC) produced by dinoflagellates (Dinophyceae) occur as an important part of assemblage diversities in seafloor sediments worldwide. Here a new species, Islandinium pacificum, is described from surface sediment samples
Gurdebeke, Pieter   +4 more
core   +2 more sources

occumb: An R package for site occupancy modeling of eDNA metabarcoding data

open access: yesPopulation Ecology, EarlyView.
This study introduces a new R package, occumb, for the convenient application of site occupancy modeling using environmental DNA (eDNA) metabarcoding data. We outline a data analysis workflow, including data setup, model fitting, model assessment, and comparison of potential study settings based on model predictions, all of which can be performed using
Keiichi Fukaya, Yuta Hasebe
wiley   +1 more source

Upper ocean climate of the Eastern Mediterranean Sea during the Holocene Insolation Maximum – a model study [PDF]

open access: yes, 2011
ine thousand years ago (9 ka BP), the Northern Hemisphere experienced enhanced seasonality caused by an orbital configuration close to the minimum of the precession index.
Adloff, F.   +6 more
core   +2 more sources

Cirque Glacier on South Georgia Shows Centennial Variability over the Last 7000 Years

open access: yesFrontiers in Earth Science, 2018
A 7000 year-long cirque glacier reconstruction from South Georgia, based on detailed analysis of fine-grained sediments deposited downstream in a bog and a lake, suggests continued presence during most of the Holocene.
Lea T. Oppedal   +8 more
doaj   +1 more source

Holocene volcanism at the Quetrupillán Volcanic Complex (39°30’ S, 71°43’ W), southern Chile

open access: yesVolcanica, 2020
This paper provides the first detailed description of Holocene volcanism at the Quetrupillán Volcanic Complex. This volcanic complex consists of a truncated and eroded stratocone plus sixteen well-preserved satellite vents on its lower flanks.
Isla Simmons   +4 more
doaj   +1 more source

Speciation Through the Lens of Population Dynamics: A Theoretical Primer on How Small and Large Populations Diverge

open access: yesPopulation Ecology, EarlyView.
Population size and dynamics fundamentally shape speciation by influencing genetic drift, founder events, and adaptive potential. Small populations may speciate rapidly due to stronger drift, whereas large populations harbor more genetic diversity, which can alter divergence trajectories. We highlight theoretical models that incorporate population size
Ryo Yamaguchi   +3 more
wiley   +1 more source

State-of-the-art in studies of glacial isostatic adjustment for the British Isles: a literature review [PDF]

open access: yes, 2016
Understanding the effects of glacial isostatic adjustment (GIA) of the British Isles is essential for the assessment of past and future sea-level trends.
Alistair Rennie   +36 more
core   +1 more source

Holocene molluscan assemblages in the Magellan region

open access: yesScientia Marina, 1999
In the Magellan region, much of the shoreline of the Beagle Channel coast (54°53´S; 67° - 68°W) is bordered by Holocene raised beaches, which contain a large number of molluscs and other shelled taxa.
Sandra Gordillo
doaj   +1 more source

FoxO1 signaling in B cell malignancies and its therapeutic targeting

open access: yesFEBS Letters, EarlyView.
FoxO1 has context‐specific tumor suppressor or oncogenic character in myeloid and B cell malignancies. This includes tumor‐promoting properties such as stemness maintenance and DNA damage tolerance in acute leukemias, or regulation of cell proliferation and survival, or migration in mature B cell malignancies.
Krystof Hlavac   +3 more
wiley   +1 more source

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