Results 81 to 90 of about 3,255,505 (313)

Multiple episodes of extensive marine anoxia linked to global warming and continental weathering following the latest Permian mass extinction

open access: yesScience Advances, 2018
Multiple episodes of extensive oceanic anoxia delayed the marine ecosystem recovery from the latest Permian mass extinction. Explaining the ~5-million-year delay in marine biotic recovery following the latest Permian mass extinction, the largest biotic ...

semanticscholar   +1 more source

Near‐Infrared Organic Photovoltaic Electrodes for Subretinal Neurostimulation

open access: yesAdvanced Functional Materials, EarlyView.
Organic photovoltaic electrodes based on the D18:Y6 blend enable precise and light‐controlled activation of retinal ganglion cells in a degenerating retina. NIR Light‐driven activation of retinal ganglion cells, tunable stimulation parameters, and biocompatibility with human retinal organoids highlight their potential for next‐generation prosthetics ...
Andrea Corna   +10 more
wiley   +1 more source

Pleistocene preserve: a population growth problem of mammoth proportions

open access: yesEvolution: Education and Outreach, 2019
A number of processes that involve large numbers are critical to civic scientific literacy, including many biological topics. Understanding the basic causes of such large-scale processes, such as population growth, speciation, and extinction, are key to ...
Thomas R. Beatman, R. Joel Duff
doaj   +1 more source

ANALYSIS OF ANTHROPOGENICALLY INDUCED CHANGES IN ECOSYSTEM COMPONENTS IN THE KATUN RECREATIONAL AREA OF THE ALTAI REPUBLIC, RUSSIAN FEDERATION [PDF]

open access: yesGeo Journal of Tourism and Geosites, 2019
The aim of the research is a comprehensive evaluation of the character of the impact of recreational activity and tourism on the biological communities of the Republic of Altai.
Peter Yu. MALKOV   +4 more
doaj   +1 more source

Fighting Risky Population Synchronization: Desynchronization and Stabilization in Spatially Structured Ecological Systems [PDF]

open access: yes, 2011
Population synchronization exists ubiquitously in ecological systems, of which the underlying causes and the roles in species extinction remain a perplexing puzzle.
Ming Luo
core   +1 more source

Local Extinction of Bull Kelp (Durvillaea spp.) Due to a Marine Heatwave

open access: yesFrontiers in Marine Science, 2019
Detailed research has documented gradual changes to biological communities attributed to increases in global average temperatures. However, localized and abrupt temperature anomalies associated with heatwaves may cause more rapid biological changes.
M. Thomsen   +7 more
semanticscholar   +1 more source

Full‐Spectrum Solar Harvesting and Desalination Enabled by Supra‐Nano Amorphous Ruthenium Dioxide – Mineral Composites

open access: yesAdvanced Functional Materials, EarlyView.
A mineral‐based supra‐nano amorphous ruthenium dioxide composite (a‐Ru0.5‐AM) was designed, achieving 97% broadband solar absorption. Under one sun, it reaches 87.91 ± 0.32 °C with a distinct thermal buffering effect that favors thermal confinement.
Yunchen Long   +13 more
wiley   +1 more source

Ecological Finitude as Ontological Finitude: Radical Hope in the Anthropocene [PDF]

open access: yes, 2018
The proposal that the earth has entered a new epoch called “the Anthropocene” has touched a nerve . One unsettling part of having our ecological finitude thrust upon us with the term “Anthropocene” is that, as Nietzsche said of the death of God, we ...
Flores, Fernando, Rousse, B. Scot
core  

Retroactive interference: Counterconditioning and extinction with and without biologically significant outcomes.

open access: yesJournal of Experimental Psychology: Animal Learning and Cognition, 2020
Following cue-outcome (X-O) pairings, 2 procedures that reduce conditioned responses to X are extinction, in which X is presented by itself, and counterconditioning, in which X is paired with a different outcome typically of valence opposite that of training.
Jérémie Jozefowiez   +5 more
openaire   +4 more sources

Biological diversity and probability of local extinction of ecosystems [PDF]

open access: yesFunctional Ecology, 2000
Abstract1. With a mathematical model, we demonstrate that two principle components of biological diversity have antagonistic effects on the probability of ecosystem functioning (i.e. on ecosystem reliability, sensuNaeem 1998). Increasing the number of functionally analogous species in the system is shown to enhance reliability, while increasing the ...
Nijs, Ivan, Impens, Ivan
openaire   +2 more sources

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