18,414 results match your criteria dynamic nature

Land cover alteration shifts ecological assembly processes in floodplain lakes: Consequences for fish community dynamics.

Sci Total Environ 2021 Mar 25;782:146724. Epub 2021 Mar 25.

School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China; Science Division, NSW Department of Planning, Industry and Environment, Sydney 2124, Australia. Electronic address:

Habitat degradation is expected to alter community structure and consequently, ecosystem functions including the maintenance of biodiversity. Understanding the underlying abiotic and biotic assembly mechanisms controlling temporal and spatial community structure and patterns is a central issue in biodiversity conservation. In this study, using monthly time series of fish abundance data collected over a three-year period, we compared the temporal community dynamics in natural habitats and poplar plantations in one of the largest river-lake floodplain ecosystems in China, the Dongting Lake. Read More

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Morphological and ecological responses of a managed coastal sand dune to experimental notches.

Sci Total Environ 2021 Apr 5;782:146813. Epub 2021 Apr 5.

Office National des ForĂȘts, 75570 CEDEX 12 Paris, France. Electronic address:

In northern Europe, coastal dune remobilization by restoring natural processes is considered by some to maintain the coastal dune in chronically eroding sectors by migrating landward and to restore dune ecology. In wet climatic contexts, this nature-based solution has been shown to induce an increase in both sand bare areas and vegetation diversity. However, it has never been tested in the coastal dunes of southern Europe with a drier climate and, thus, more stressful conditions, where disturbance may inversely decrease vegetation diversity. Read More

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A numerical study of arsenic contamination at the Bagnoli bay seabed by a semi-anthropogenic source. Analysis of current regime.

Sci Total Environ 2021 Apr 5;782:146811. Epub 2021 Apr 5.

Italian Institute of Geophysics and Vulcanology (INGV), Italy; CNR-IRISS, Naples, Italy. Electronic address:

Bagnoli Coroglio is an urban district of the City of Naples (South Italy), which fronts the Tyrrhenian Sea for nearly 3 km. It is part of the Campi Flegrei caldera, one of the most explosive volcanic areas in Europe. The need for redeveloping the site after the intense industrial activities of the twentieth century has prompted a remarkable research effort to investigate the pollution's degree, nature, and extent at both the land and seafloor. Read More

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The temporal dimension in the understanding of maternal sensitivity in caregiver-infant interactions: The 'Early Mother-Child Interaction Coding System'.

Infant Behav Dev 2021 Apr 10;63:101563. Epub 2021 Apr 10.

York University Toronto, Canada.

Caregiver-child interaction is known to play a central role in children's socioemotional development, yet the diversity of measures commonly used to evaluate it call into question the nature of the construct being assessed. Contingency within caregiver-child interactions has been identified as a key dyadic process that requires taking a temporal perspective to evaluating interactions. The Early Mother-Child Interaction Coding System is a psychometrically sound measure that sequentially code the flow of interactive and non-interactive behaviours within a caregiver-infant system. Read More

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Origin, Nature, and the Dynamic Behavior of Nanoscale Vacancy Clusters in Ni-Rich Layered Oxide Cathodes.

ACS Appl Mater Interfaces 2021 Apr 13. Epub 2021 Apr 13.

Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States.

Effects of nanoscale vacancy clusters on the electrochemical properties of cathodes critically depend on the dynamic characteristics of vacancies during the battery cycling. However, a fundamental understanding of vacancy clusters in the layer-structured cathode remains elusive. Here, using scanning transmission electron microscopy, we reveal a cycling-induced vacancy aggregation behavior in a layer-structured cathode. Read More

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Single-Stranded DNA Curtains for Single-Molecule Visualization of Rad51-ssDNA Filament Dynamics.

Methods Mol Biol 2021 ;2281:193-207

Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY, USA.

Homologous recombination (HR) is a highly conserved DNA repair pathway required for the accurate repair of DNA double-stranded breaks. DNA recombination is catalyzed by the RecA/Rad51 family of proteins, which are conserved from bacteria to humans. The key intermediate catalyzing DNA recombination is the presynaptic complex (PSC), which is a helical filament comprised of Rad51-bound single-stranded DNA (ssDNA). Read More

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January 2021