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Uncovering the multi-fencing effects: Changes in plant diversity across dimensions and spatio, and the relationship between diversity and stability.
J Environ Manage
January 2025
Lhasa Plateau Ecosystem Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China. Electronic address:
Plant diversity is fundamental to maintaining grassland ecosystem function. Rangeland managers use fencing as a strategy to enhance plant diversity in degraded grasslands. However, the effects of this natural management approach on grasslands across a wide range of environmental gradients and its spatial pattern remain unclear.
View Article and Find Full Text PDFIs the cortisol awakening response truly a response to awakening? Replication and extension using overnight sampling.
Eur J Appl Physiol
January 2025
Department of Kinesiology, University of North Carolina at Greensboro, Greensboro, NC, USA.
The cortisol awakening response (CAR) is a discrete component of the circadian cortisol profile. Evidence suggests that the CAR is a deviation from the pre-awakening increase in cortisol concentration, although this has yet to be replicated. Therefore, the purpose of this study was to replicate this finding and to investigate further the extent to which the CAR is distinct from the circadian profile.
View Article and Find Full Text PDFClinical Manifestations.
Alzheimers Dement
December 2024
Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
Background: Individuals with preclinical Alzheimer's disease (AD) show reduced practice effects on annually repeated neuropsychological testing, suggesting a decreased ability to learn over repeated exposures. Remote, digital testing enables the assessment of learning over more frequent time intervals, thereby facilitating a more rapid detection of those early learning deficits. We previously showed that multi-day learning on the Boston Remote Assessment for Neurocognitive Health (BRANCH) was indeed diminished in Αβ+ cognitively unimpaired (CU) older adults.
View Article and Find Full Text PDFDistorting crack-front geometry for enhanced toughness by manipulating bioinspired heterogeneity.
Nat Commun
January 2025
CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, CAS Center for Excellence in Complex System Mechanics, University of Science and Technology of China, Hefei, Anhui, China.
Control of crack propagation is crucial to make tougher heterogeneous materials. As a crack interacts with material heterogeneities, its front distorts and adopts complex tortuous configurations. While the behavior of smooth cracks with straight fronts in homogeneous materials is well understood, the toughening by rough cracks with tortuous fronts in heterogeneous materials remains unsolved.
View Article and Find Full Text PDFSurface remodeling and inversion of cell-matrix interactions underlie community recognition and dispersal in Vibrio cholerae biofilms.
Nat Commun
January 2025
Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT, USA.
Biofilms are ubiquitous surface-associated bacterial communities embedded in an extracellular matrix. It is commonly assumed that biofilm cells are glued together by the matrix; however, how the specific biochemistry of matrix components affects the cell-matrix interactions and how these interactions vary during biofilm growth remain unclear. Here, we investigate cell-matrix interactions in Vibrio cholerae, the causative agent of cholera.
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