Results 31 to 40 of about 3,255,505 (313)

Blunted Glucocorticoid Responsiveness to Stress Causes Behavioral and Biological Alterations That Lead to Posttraumatic Stress Disorder Vulnerability

Biological Psychiatry, 2023
BACKGROUND Understanding why only a subset of trauma-exposed individuals develop posttraumatic stress disorder (PTSD) is critical for advancing clinical strategies.
S. Monari, Isabelle Guillot de Suduiraut, J. Grosse, O. Zanoletti, Sophie E. Walker, M. Mesquita, Tobias C. Wood, D. Cash, S. Astori, C. Sandi   +9 more
semanticscholar   +1 more source

Extinction in a branching process: Why some of the fittest strategies cannot guarantee survival [PDF]

, 2013
The fitness of a biological strategy is typically measured by its expected reproductive rate, the first moment of its offspring distribution. However, strategies with high expected rates can also have high probabilities of extinction. A similar situation
Klaere, Steffen, Sawaya, Sterling
core   +2 more sources

Behavioral Correlates of Primates Conservation Status: Intrinsic Vulnerability to Anthropogenic Threats. [PDF]

PLoS ONE, 2015
Behavioral traits are likely to influence species vulnerability to anthropogenic threats and in consequence, their risk of extinction. Several studies have addressed this question and have highlighted a correlation between reproductive strategies and ...
Amélie Christelle Lootvoet, Justine Philippon, Carmen Bessa-Gomes   +2 more
doaj   +1 more source

Utopia without us?

Esboços, 2021
As the prospect of self-authored human extinction increasingly appears as a plausible scenario of human futures, a growing number of efforts aim at comprehending it as the prospect of the world without us.
Zoltán Boldizsár Simon
doaj   +1 more source

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

Post-extinction recovery of the Phanerozoic oceans and biodiversity hotspots

Nature, 2022
The fossil record of marine invertebrates has long fuelled the debate as to whether or not there are limits to global diversity in the sea1–5. Ecological theory states that, as diversity grows and ecological niches are filled, the strengthening of ...
P. Cermeño, C. García-Comas, A. Pohl, S. Williams, M. Benton, Chhaya Chaudhary, G. Le Gland, R. Müller, A. Ridgwell, S. Vallina   +9 more
semanticscholar   +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

Monte Carlo Simulation of Age-Dependent Host-Parasite Relations

, 2007
The death of a biological population is an extreme event which we investigate here for a host-parasitoid system. Our simulations using the Penna ageing model show how biological evolution can ``teach'' the parasitoids to avoid extinction by waiting for ...
Ana Proykova, Dietrich Stauffer, Karl-Heinz Lampe, Lampe, Malarz, Moss de Oliveira, Pal, Stauffer   +7 more
core   +2 more sources

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