Results 21 to 30 of about 342,951 (316)

Survival of small populations under demographic stochasticity [PDF]

, 1992
We estimate the mean time to extinction of small populations in an environment with constant carrying capacity but under stochastic demography. In particular, we investigate the interaction of stochastic variation in fecundity and sex ratio under several
Bürger, Reinhard, Gabriel, Wilfried
core   +1 more source

Hybridization and extinction [PDF]

Evolutionary Applications, 2016
AbstractHybridization may drive rare taxa to extinction through genetic swamping, where the rare form is replaced by hybrids, or by demographic swamping, where population growth rates are reduced due to the wasteful production of maladaptive hybrids. Conversely, hybridization may rescue the viability of small, inbred populations.
Todesco, Marco, Pascual, Mariana A, Owens, Gregory L, Ostevik, Katherine L, Moyers, Brook T, Hübner, Sariel, Heredia, Sylvia M, Hahn, Min A, Caseys, Celine, Bock, Dan G, Rieseberg, Loren H   +10 more
openaire   +6 more sources

Cannabidiol regulation of learned fear: implications for treating anxiety-related disorders

Frontiers in Pharmacology, 2016
Anxiety and trauma-related disorders are psychiatric diseases with a lifetime prevalence of up to 25%. Phobias and post-traumatic stress disorder (PTSD) are characterized by abnormal and persistent memories of fear-related contexts and cues.
Regimantas Jurkus, Harriet Laura Lavinia Day, Francisco S. Guimaraes, Jonathan L C Lee, Leandro Jose Bertoglio, Carl W. Stevenson   +5 more
doaj   +1 more source

Has the Polyploid Wave Ebbed?

Frontiers in Plant Science, 2020
There was a wave of whole genome duplications (WGD) during and subsequent to the K-Pg interface, which was followed by an increase in the proportion of species that were polyploid.
Donald A. Levin
doaj   +1 more source

The effects of presenting additional stimuli resembling the CS+ during extinction on extinction retention and generalisation to novel stimuli

, 2021
Recent studies have shown that extinction training including the conditional stimulus (CS+) and stimuli similar to the CS + enhances extinction retention and generalisation to novel stimuli.
Ryan, Katherine M, Waters, Allison M, Craske, Michelle G, Luck, Camilla C, Lipp, Ottmar V   +4 more
core   +1 more source

Identification of the Similarities and Differences of Molecular Networks Associated With Fear Memory Formation, Extinction, and Updating in the Amygdala

Frontiers in Molecular Neuroscience, 2021
Abnormality of fear memory is one of the important pathogenic factors leading to post-traumatic stress disorder (PTSD), anxiety disorder, and other mental disorders.
Jinfeng Su, Jinfeng Su, Pingping Li, Qishuai Zhuang, Xing Chen, Xiaoning Zhang, Xiaobing Li, Jingxian Wang, Xiaohan Yu, Yue Wang, Yue Wang   +10 more
doaj   +1 more source

From Bench to Brain: A Metadata-driven Approach to Research Data Management in a Collaborative Neuroscientific Research Center

Data Science Journal
Research data management (RDM) is key to fast and effective cooperation in collaborative research projects, especially when several scientific disciplines are involved.
Marlene Pacharra, Tobias Otto, Nina Olivia Caroline Winter   +2 more
doaj   +1 more source

Urban forest fragments as unexpected sanctuaries for the rare endemic ghost butterfly from the Atlantic forest

Ecology and Evolution, 2019
Anthropogenic land expansion, particularly urbanization, is pervasive, dramatically modifies the environment and is a major threat to wildlife with its associated environmental stressors. Urban remnant vegetation can help mitigate these impacts and could
Antonio C. deAndrade, William Medeiros, Matthew Adams   +2 more
doaj   +1 more source

The foreknowledge of extinction [PDF]

Postgraduate Medical Journal, 2009
We are, so far as we know, the first species that has foreseen its own extinction. In the distant past, this foreknowledge took the form of myths, including visions of Armageddon. In the last couple of centuries, however, we have been able to give precise scientific shape to such forebodings.
openaire   +2 more sources

Bringing Neuroscientific Data to Sustainability: Embedded Data Stewardship in CRC 1280

Bausteine Forschungsdatenmanagement
Information Management (INF) projects are essential to the establishment of infrastructures for the management of research data and metadata in Collaborative Research Centers (CRCs) funded by the German Research Foundation (DFG).
Marlene Pacharra, Nina Olivia Caroline Winter, Tobias Otto   +2 more
doaj   +1 more source