Understanding drivers of plant community assembly and individual survival in forest ecosystems is crucial for effective conservation and management. While macro-scale factors influencing vegetation patterns are well documented, the combined impact of microtopographic variations and neighborhood effects at neighborhood scales, particularly in subtropical forests, requires further study. To contribute to this area of research, we established a 9.6 ha dynamic plot in a subtropical evergreen broad-leaved forest to examine the interplay between microtopographic factors and neighborhood effects on individual plant survival across different life stages. We conducted a comprehensive analysis of microtopographic variables and neighborhood effects, with individual plant survival censused through repeated surveys at 5-year intervals. Mixed-effects models were employed to assess the combined influence of these factors across life stages. Our results reveal that both microtopographic factors and neighborhood effects significantly influence plant survival, with their impacts varying across life stages. Water availability, represented by flow direction, emerged as a consistently critical factor throughout all life stages. Elevation and the topographic position index showed significant positive effects on survival, particularly in later life stages, possibly reflecting adaptations to light acquisition and water drainage. The influence of topographic factors intensified with succession, while the impact of neighborhood effects, particularly asymmetric competition and conspecific negative density dependence, changed as plants matured. This study enhances our understanding of forest community assembly, emphasizing the importance of considering abiotic and biotic factors across multiple scales for effective forest conservation and management. It provides insights into mechanisms driving spatial variation in community composition, crucial for preserving biodiversity in heterogeneous forest landscapes.
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http://dx.doi.org/10.3390/plants13223216 | DOI Listing |
Child Abuse Negl
December 2024
The Ohio State University, College of Social Work, 300 Stillman Hall, 1947 North College Road, Columbus, OH 43210, United States of America. Electronic address:
Background: Neighborhood disadvantage is linked to a higher risk of referrals to child welfare and juvenile justice systems. While past research has explored these associations independently, no study has concurrently examined the spatial overlap of child maltreatment and juvenile justice involvement.
Objective: We examine the spatial overlap of involvement in juvenile justice and child welfare systems to identify areas of shared risk.
Ann Behav Med
December 2024
Department of Psychology, San Diego State University, San Diego, CA, 92182, United States.
Objective: To compare the effectiveness of a static, text-based diabetes education and support intervention (Dulce Digital, DD) versus a dynamic approach with personalized feedback and goal setting (Dulce Digital-Me, DD-Me) in improving diabetes outcomes.
Design And Methods: Comparative effectiveness trial in 310 Latine adults with poorly managed type 2 diabetes in a Federally Qualified Health Center in Southern California, randomized to DD, DD-Me-Auto (algorithm-driven text-based personalized feedback), or DD-Me-Tel (coach delivered personalized feedback). Changes in HbA1c (primary outcome), low-density lipoprotein-cholesterol, systolic blood pressure, and patient-reported outcomes were examined across 6 and 12 months, with the primary comparison being DD versus DD-Me (combined automated and telephonic).
J Am Heart Assoc
December 2024
Socio-Spatial Determinants of Health (SSDH) Laboratory, Population and Community Health Sciences Branch, Division of Intramural Research, National Institute on Minority Health and Health Disparities National Institutes of Health Bethesda MD.
Background: Neighborhood characteristics serve as risk factors for metabolic syndrome (MetS). However, the intermediary factors linking this relationship remain understudied. Thus, we investigated the sex-specific mediating role of C-reactive protein, physical activity (PA), and perceived stress in the associations of perceived neighborhood social environment (PNSE) with MetS severity among Black adults.
View Article and Find Full Text PDFJ Interpers Violence
December 2024
Tsinghua Shenzhen International Graduate School, Tsinghua University, China.
There is a limited understanding of the pathways that lead to victim-perpetrator overlap in adolescent dating violence (ADV) particularly in developing countries such as China. Applying a latent class approach, the present study focuses on whether the overlap can be explained by theoretical constructs grounded in social learning, general strain, and social bonding theories, and whether these constructs relate to underexplored mediating mechanisms or are direct precursors. The study sample consisted of 1,787 dating adolescents (39.
View Article and Find Full Text PDFCogn Affect Behav Neurosci
December 2024
Department of Psychology, Binghamton University, Binghamton, NY, USA.
Cognitive reserve (CR) and busyness can boost memory, whereas stress can impair memory. Nevertheless, extant research has not yet examined busyness in conjunction with CR and stress, nor whether CR or stress moderate the relationship between busyness and episodic memory. Middle-aged and older adult participants (N = 71; ages 50-74; 31% African-American) answered lifestyle questionnaires and completed a visual paired-associate memory fMRI task.
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