Results 21 to 30 of about 24,863 (250)

A new species of mixosaurid ichthyosaur from the Middle Triassic of Luxi County, Yunnan Province, South China [PDF]

open access: yesActa Palaeontologica Polonica
Ichthyosaurs, an iconic lineage of Mesozoic marine reptiles, were an important component of recovering ecosystems after the Permo-Triassic Mass Extinction event.
YE-WEI FANG   +2 more
doaj   +1 more source

Halobacteria-Based Biofertilizers: A Promising Alternative for Enhancing Soil Fertility and Crop Productivity under Biotic and Abiotic Stresses—A Review

open access: yesMicroorganisms, 2023
Abiotic and biotic stresses such as salt stress and fungal infections significantly affect plant growth and productivity, leading to reduced crop yield.
Fatma Masmoudi   +7 more
doaj   +1 more source

Protective effects of berberine in chronic copper-induced liver and gill injury in freshwater grouper (Acrossocheilus fasciatus)

open access: yesEcotoxicology and Environmental Safety, 2023
This experiment aimed to investigate the protective effects of berberine on copper-induced liver and gill toxicities in freshwater grouper (Acrossocheilus fasciatus).
Chenyang Wang   +7 more
doaj   +1 more source

Microfossil assemblages and geochemistry for interpreting the incidence of the Jenkyns Event (early Toarcian) in the south-eastern Iberian Palaeomargin (External Subbetic, SE Spain) [PDF]

open access: yesJournal of Micropalaeontology, 2020
By studying the facies, geochemistry, and microfossil assemblages of the uppermost Pliensbachian and lower Toarcian of the Cueva del Agua section, I was able to appraise the impact of the Jenkyns Event in the eastern part of the South Iberian ...
M. Reolid
doaj   +1 more source

The main stage of recovery after the end-Permian mass extinction: taxonomic rediversification and ecologic reorganization of marine level-bottom communities during the Middle Triassic [PDF]

open access: yesPeerJ, 2021
The recovery of marine life from the end-Permian mass extinction event provides a test-case for biodiversification models in general, but few studies have addressed this episode in its full length and ecological context.
Evelyn Friesenbichler   +2 more
doaj   +2 more sources

Lessons from the past: Biotic recoveries from mass extinctions [PDF]

open access: yesProceedings of the National Academy of Sciences, 2001
Although mass extinctions probably account for the disappearance of less than 5% of all extinct species, the evolutionary opportunities they have created have had a disproportionate effect on the history of life. Theoretical considerations and simulations have suggested that the empty niches created by a mass extinction should refill rapidly after ...
openaire   +2 more sources

Ferns as facilitators of community recovery following biotic upheaval

open access: yesBioScience
Abstract The competitive success of ferns has been foundational to hypotheses about terrestrial recolonization following biotic upheaval, from wildfires to the Cretaceous–Paleogene asteroid impact (66 million years ago). Rapid fern recolonization in primary successional environments has been hypothesized to be driven by ferns’ high spore
Lauren Azevedo-Schmidt   +6 more
openaire   +3 more sources

Patterns of fossil distributions within their environmental context from the Middle Triassic in South Canyon, Central Nevada, USA

open access: yesJournal of Palaeogeography, 2014
The Middle Triassic records the return of diverse marine communities after the severe effects of the end-Permian mass extinction. This diversification leads to the Mesozoic/modern adaptive radiation resulting in substantial changes in marine communities ...
Pedro M. Monarrez, Nicole Bonuso
doaj   +1 more source

New keratose sponges after the end‐Permian extinction provide insights into biotic recoveries

open access: yesGeobiology, 2023
AbstractWe challenge the prevailing view that the end‐Permian extinction impeded the Triassic evolution of sponges. Here, we report a deep‐water community dominated by abundant keratose sponges in the lowest Triassic strata from Southwest China. The sponge fossils occur as dark elliptical imprints in mudstone with distinct oscula on their tops.
Siqi Wu   +4 more
openaire   +3 more sources

Deoxyribonucleic acid extraction for invertebrate metabarcoding from stream sediment and implication to biotic indices [PDF]

open access: yesGlobal Journal of Environmental Science and Management
BACKGROUND AND OBJECTIVES: Environmental deoxyribonucleic acid metabarcoding has become a powerful tool for assessing invertebrate biodiversity in stream sediments, providing a non-invasive approach for ecological monitoring.
M.H.F. Amin   +6 more
doaj   +1 more source

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