Article
Biodiversity Conservation
Pu-Jin Zhang, Hua Qing, Li-Qing Zhao, Lei Zhang, Jie Yang, Jian-Hui Huang
Summary: The study revealed differences in spatial distribution patterns of Helianthemum songaricum in two habitats, which may be related to the neighborhood effects of intraspecific individuals and other woody species. Limited regeneration of H. songaricum population was detected in both habitats, indicating ecological implications for H. songaricum population protection.
GLOBAL ECOLOGY AND CONSERVATION
(2021)
Article
Remote Sensing
Yongze Song
Summary: This study proposes the concept of the second dimension of spatial association (SDA) to explore spatial association by extracting geographical information at locations outside sample points. Three SDA models are developed, and compared with corresponding first dimension models, it is found that SDA models have advantages in accuracy, multi-scale effects, and avoiding estimation errors.
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
(2022)
Article
Ecology
Antonio J. Perea, Thorsten Wiegand, Jose L. Garrido, Pedro J. Rey, Julio M. Alcantara
Summary: This study used point pattern analysis to examine the spatial phylogenetic and phenotypic structures of plant communities at different stages. The results showed that there were different patterns between saplings and adult plants, with adult plants exhibiting phylogenetic clustering. There were also differences in neighbor composition between species at different stages. The findings highlight the importance of ontogenetic shifts in plant community assembly processes.
Article
Biochemistry & Molecular Biology
Xinghu Qin, Oscar E. Gaggiotti
Summary: This study evaluated the power of information-based summary statistics in informing spatial patterns of genetic diversity, comparing it with traditional population genetics approaches. Information-based measures and Jaccard dissimilarity were found to be excellent additions to the population genetics toolkit, showing high discriminatory power in discriminating among spatial scenarios.
MOLECULAR ECOLOGY RESOURCES
(2022)
Article
Ecology
Yousef Erfanifard, Mehdi Pourhashemi, Sajad Alimahmoodi Sarab
Summary: This study compared the spatial patterns of high and coppice pure stands of Quercus brantii in oak woodlands, revealing aggregation of oak individuals in the high stand and segregation in the coppice stand. The findings suggest that environmental heterogeneity and intraspecific competition are the main drivers of the two stands, respectively.
ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY
(2021)
Article
Plant Sciences
David Ward, Tiffany Pillay, Siphesihle Mbongwa, Kevin Kirkman
Summary: Spatial analysis revealed that the dominant encroaching tree species had re-invaded all the removal plots 23 years after a long-term tree removal experiment. Nearest-neighbour analysis showed a positive correlation between tree size and nearest-neighbour distance, indicating competition. Point-pattern analysis indicated the facilitation of young trees by adult trees.
Article
Ecology
Mike H. Salazar H. Villegas, Thorsten Wiegand, Roy Gonzalez-M, Susana Rodriguez-Buritica, Mohammed Qasim, Elmar Csaplovics
Summary: Analyzing the spatial association pattern among species can provide insights into forest dynamics and assembly mechanisms. This study used spatial point pattern analysis techniques to assess the spatial association network among eight species in a tropical dry forest in Colombia. Results showed that positive association patterns dominated at smaller spatial scales, while negative interactions prevailed at intermediate scales. The examined association patterns were found to be related to species traits and could provide valuable information for both community assembly understanding and restoration directions.
FRONTIERS IN FORESTS AND GLOBAL CHANGE
(2023)
Article
Ecology
Finbarr G. Horgan, Arriza Arida, Goli Ardestani, Maria Liberty P. Almazan
Summary: The study found that the white-backed planthopper performed better at 25 degrees Celsius, while the brown planthopper performed better at 30 degrees Celsius. However, at high temperatures, the white-backed planthopper caused a reduction in oviposition and nymph performance of the brown planthopper. Interference competition enhanced ecosystem resilience to warmer temperatures predicted under global climate change through host plant defenses.
FUNCTIONAL ECOLOGY
(2021)
Article
Mathematics, Applied
Juan Liang, Chen Liu, Gui-Quan Sun, Li Li, Lai Zhang, Meiting Hou, Hao Wang, Zhen Wang
Summary: Vegetation pattern can serve as an early warning for desertification, and nonlocal interaction is a key mechanism for the formation of vegetation pattern.
APPLIED MATHEMATICS AND COMPUTATION
(2022)
Article
Physics, Fluids & Plasmas
Stefano Garlaschi, Deepak Gupta, Amos Maritan, Sandro Azaele
Summary: The text explains how regular spatial structures emerge in different dynamics and can be described by the Ginzburg-Landau equation. It also introduces a mathematical framework that can handle a wider range of system behaviors.
Article
Multidisciplinary Sciences
Peitao Wu, Biqi Wang, Steven A. Lubitz, Emelia J. Benjamin, James B. Meigs, Josee Dupuis
Summary: This study proposes an approximate conditional phenotype analysis method based on GWAS summary statistics, covariance between traits, and variant minor allele frequency. The method shows high consistency and accuracy in estimating genetic effect size compared to individual level data analysis, providing an efficient way to perform conditional analysis using large-scale GWAS summary statistics.
SCIENTIFIC REPORTS
(2021)
Article
Multidisciplinary Sciences
Yuchang Wu, Xiaoyuan Zhong, Yunong Lin, Zijie Zhao, Jiawen Chen, Boyan Zheng, James J. Li, Jason M. Fletcher, Qiongshi Lu
Summary: The study introduces a statistical framework to estimate direct and indirect genetic effects using GWAS summary statistics, successfully applied to birth weight and educational attainment. Genetic effects of educational attainment show distinct patterns of genetic correlations with 45 complex traits.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Optics
Agnes George, Andrew Bruhacs, A. Aadhi, William E. Hayenga, Rachel Ostic, Erin Whitby, Michael Kues, Zhiming M. Wang, Christian Reimer, Mercedeh Khajavikhan, Roberto Morandotti
Summary: This paper presents a new method to investigate the temporal dynamics of photon statistics associated with nanolaser emission without the need for spectral filtering. By optically pumping the nanolasers with nanosecond pulses, coherence transitions from thermal emission to lasing are observed in the gathered time-resolved photon statistics.
LASER & PHOTONICS REVIEWS
(2021)
Article
Forestry
Mariem Ben-Said, Juan Carlos Linares, Jose Antonio Carreira, Lahcen Taiqui
Summary: This study analyzed the fine scale spatial pattern of Moroccan fir and Cedrus atlantica in a mixed forest in northern Morocco, revealing an aggregation of conspecific and heterospecific individuals at small distances up to 2m. Recruitment of A. marocana mainly occurred close to dominant trees of C. atlantica, while C. atlantica dominated in small gaps. The spatial patterns observed suggest attraction mechanisms between the two species.
FOREST ECOLOGY AND MANAGEMENT
(2022)
Article
Multidisciplinary Sciences
Danny E. Carvajal, Andrea P. Loayza, Francisco A. Squeo
Summary: This study investigates the assembly processes that structure shrub communities in a hyper-arid environment. The results show that environmental heterogeneity and competition are the main drivers of plant community assembly.
SCIENTIFIC REPORTS
(2023)
Article
Forestry
Mariem Ben-Said, Juan Carlos Linares, Jose Antonio Carreira, Lahcen Taiqui
Summary: This study analyzed the fine scale spatial pattern of Moroccan fir and Cedrus atlantica in a mixed forest in northern Morocco, revealing an aggregation of conspecific and heterospecific individuals at small distances up to 2m. Recruitment of A. marocana mainly occurred close to dominant trees of C. atlantica, while C. atlantica dominated in small gaps. The spatial patterns observed suggest attraction mechanisms between the two species.
FOREST ECOLOGY AND MANAGEMENT
(2022)
Review
Plant Sciences
Mariem Ben-Said, El Hassan Sakar
Summary: Moroccan fir is an endangered North African mountain coniferous species that plays a key ecological role, but facing threats from human activities and climate change. There are significant knowledge gaps in the research on forest regeneration and conservation strategies for this species.
Article
Plant Sciences
Mariem Ben-Said
Summary: This article summarizes the main findings of recent studies, shedding light on the evolution of the taxonomical position of Moroccan relict firs and discussing the main hypotheses explaining the phylogenetic relationships between Moroccan and Spanish firs.
MEDITERRANEAN BOTANY
(2022)
Article
Forestry
Mariem Ben-Said, Abdelilah Ghallab, Hajar Lamrhari, Jose Antonio Carreira, Juan Carlos Linares, Lahcen Taiqui