Results 31 to 40 of about 112,775 (298)

Continental weathering and recovery from ocean nutrient stress during the Early Triassic Biotic Crisis

Communications Earth & Environment, 2022
Following the latest Permian extinction, nutrient availability from enhanced continental weathering enabled biological recovery in the ocean, according to K-Ar dating of clay minerals and nitrogen isotope analyses from high northern latitudes.
Jochen Knies, Jasmin Schönenberger, Horst Zwingmann, Roelant van der Lelij, Morten Smelror, Per Erik Vullum, Marco Brönner, Christoph Vogt, Ola Fredin, Axel Müller, Stephen E. Grasby, Benoit Beauchamp, Giulio Viola   +12 more
doaj   +1 more source

The fossil record of early tetrapods: Worker effort and the end-Permian mass extinction [PDF]

, 2010
It is important to understand the quality of the fossil record of early tetrapods (Tetrapoda. minus Lissamphibia and Amniota) because of their key role in the transition of vertebrates from water to land, their dominance of terrestrial faunas for over ...
Ruta, Marcello, Bernard, E L, Ruta, M., Benton, M.J., Benton, Michael J., Tarver, J.E., Bernard, Emma L., Tarver, James E.   +7 more
core   +1 more source

DCC, a potential target for controlling fear memory extinction and hippocampal LTP in male mice receiving single prolonged stress

Neurobiology of Stress
Post-traumatic stress disorder (PTSD) is a severe stress-dependent psychiatric disorder characterized by impairment of fear memory extinction; however, biological markers to determine impaired fear memory extinction in PTSD remain unclear.
Shaojie Yang, Jiamin Hu, Yuzhuang Chen, Zhengrong Zhang, Jingji Wang, Guoqi Zhu   +5 more
doaj   +1 more source

Phylogenetics and biogeographic approaches to the study of extinction: from timetrees to patterns of biotic assemblage

Frontiers in Genetics, 2016
Global climate change and its impact on biodiversity levels have made extinction a relevant topic in biological research. Yet, until recently, extinction has received less attention in macroevolutionary studies than speciation; the reason is the ...
Isabel eSanmartin, Andrea S. Meseguer
doaj   +1 more source

Phylogenetic Patterns of Extinction Risk in the Endemic Flora of a Mediterranean Hotspot as a Guiding Tool for Preemptive Conservation Actions

Frontiers in Ecology and Evolution, 2020
Climate change is a major driver of biodiversity decline with pervasive effects in biodiversity hotspots, where many endemic and threatened species thrive. However, the biological drivers of extinction susceptibility remain largely elusive, which hampers
Rafael Molina-Venegas, Ignacio Ramos-Gutiérrez, Ignacio Ramos-Gutiérrez, Juan Carlos Moreno-Saiz, Juan Carlos Moreno-Saiz   +4 more
doaj   +1 more source

Population control methods in stochastic extinction and outbreak scenarios.

PLoS ONE, 2017
Adaptive limiter control (ALC) and adaptive threshold harvesting (ATH) are two related control methods that have been shown to stabilize fluctuating populations.
Juan Segura, Frank M Hilker, Daniel Franco   +2 more
doaj   +1 more source

New ophthalmosaurid ichthyosaurs from the European lower cretaceous demonstrate extensive ichthyosaur survival across the Jurassic–Cretaceous boundary [PDF]

, 2012
Background Ichthyosauria is a diverse clade of marine amniotes that spanned most of the Mesozoic. Until recently, most authors interpreted the fossil record as showing that three major extinction events affected this group during its history: one ...
Ralf Kosma (189585), Tainsh, J., Jeff Liston, Naish Darren, Kosma Ralf, Michael W Maisch, Naish, D., Kosma, R, Darren Naish (115424), Ulrich Joger (189592), Fenton, B., Valentin Fischer (189579), Maisch Michael W., Pérez, Judith Pardo, Krüger Fritz J., Naish, Darren, Fritz J Krüger, Judith Pardo Pérez, Maisch, Michael W, Kosma, Ralf, Fritz J. Krüger, Pérez, J.P., Michael W. Maisch¤a, Liston, Jeff, Ulrich Joger, Valentin Fischer, Krüger, Fritz, Tainsh Jessica, Michael W. Maisch (189582), Robert M. Appleby, Pardo Pérez, Judith, Liston, J, Tainsh, J, Krüger , Fritz J, Appleby, Robert, Michael W. Maisch, Joger, U, Fischer, Valentin, Liston Jeff, Jeff Liston (189589), Robert M Appleby, Fischer Valentin, Robert M. Appleby (189609), Liston, J., Krüger, F.J., Kosma, R., Joger Ulrich, Tainsh, Jessica, Joger, Ulrich, Jessica Tainsh, Maisch, M.W., Maisch, Michael, Appleby, R.M., Krüger, Fritz J, Darren Naish, Fritz J. Krüger (189597), Pérez Judith Pardo, Judith Pardo Pérez (189600), Appleby Robert M., Fischer, V, Ralf Kosma, Jessica Tainsh (189605), Fischer, V., Pardo Pérez, J, Appleby, Robert M, Joger, U.   +65 more
core   +1 more source

Extinction of cue-evoked drug-seeking relies on degrading hierarchical instrumental expectancies

, 2014
There has long been need for a behavioural intervention that attenuates cue-evoked drug-seeking, but the optimal method remains obscure. To address this, we report three approaches to extinguish cue-evoked drug-seeking measured in a Pavlovian to ...
Rose, Abigail K., Andrew Jones, Rose, Abigail K, Field, M, Dominic M.D. Tran, Rose, Abigail, Munafò, Marcus R., Munafo, Marcus, Joseph R. Troisi, Tran, Dominic M.D., Troisi, Joseph R, Field, Matt, Marcus R. Munafò, Lee Hogarth, Rose, AK, Munafò, Marcus R, Tran, DM, Tran, DMD, Tran, Dominic M D, Jones, Andrew, Troisi, Joseph, Troisi, Joseph R., Matt Field, Retzler, Chris, Abigail K. Rose, Munafò, MR, Chris Retzler, Hogarth, Lee, Jones, A, Troisi, JR, Hogarth, L, Tran, Dominic, Retzler, C   +32 more
core   +1 more source

Extinction risk and diversification are linked in a plant biodiversity hotspot. [PDF]

PLoS Biology, 2011
It is widely recognized that we are entering an extinction event on a scale approaching the mass extinctions seen in the fossil record. Present-day rates of extinction are estimated to be several orders of magnitude greater than background rates and are ...
T Jonathan Davies, Gideon F Smith, Dirk U Bellstedt, James S Boatwright, Benny Bytebier, Richard M Cowling, Félix Forest, Luke J Harmon, A Muthama Muasya, Brian D Schrire, Yolande Steenkamp, Michelle van der Bank, Vincent Savolainen   +12 more
doaj   +1 more source

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

FEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto, Masatomo So, Ayako Furukawa, Kenji Sugase   +3 more
wiley   +1 more source