Article
Biochemistry & Molecular Biology
Paul Savary, Jean-Christophe Foltete, Herve Moal, Gilles Vuidel, Stephane Garnier
Summary: This study explored the use of genetic graphs in landscape genetic analyses, comparing different pruning methods and genetic distances to weight graph links. Results showed that methods based on geographical distance thresholds were more effective in identifying dispersal networks, and counter-intuitively, sub-selection of pairwise distances through graph pruning could lead to improved inferences of landscape effects on dispersal. Additionally, genetic distances such as D-PS or Euclidean genetic distances were found to respond faster to landscape changes, making them preferable for landscape effect inference.
MOLECULAR ECOLOGY RESOURCES
(2021)
Article
Ecology
Paul Savary, Jean-Christophe Foltete, Herve Moal, Gilles Vuidel, Stephane Garnier
Summary: The study developed an R package to enhance and promote the use of landscape and genetic graphs in landscape genetics. The package includes functions for handling genetic data, computing genetic distances, and geodesic calculations, as well as command-line tools and various parameters for analysis. Users can analyze, compare, visualize the graphs and export them for further research.
METHODS IN ECOLOGY AND EVOLUTION
(2021)
Article
Ecology
Johanna Haussler, Remo Ryser, Ulrich Brose
Summary: This study combines trophic network models with spatial network models to investigate the impact of nutrient supply and landscape structure on biological invasions and invasive spread. Results indicate that nutrient supply affects invasion success, with random landscapes facilitating invasive spread.
Article
Environmental Sciences
Pedro A. Salgueiro, Francesco Valerio, Carmo Silva, Antonio Mira, Joao E. Rabaca, Sara M. Santos
Summary: The study examined how landscape functional connectivity determines the spatial distribution of a bird community in a production forest. It found that multispecies connectivity had more consistent effects on community parameters than single-species connectivity, and that habitat size and quality were also important factors in explaining community parameters. This suggests that both habitat and landscape filters play a role in governing community assembly processes.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Biochemistry & Molecular Biology
Katrin Kiemel, Guntram Weithoff, Ralph Tiedemann
Summary: This study used a DNA metabarcoding approach to investigate the spatial and temporal connectivity of zooplankton communities and the environmental factors influencing their assembly. The results showed that community composition was primarily determined by pH, kettle hole size, surrounding field crops, and permanency. Environmental filtering based on specific conditions in individual kettle holes seemed to be the dominant process in community assembly in the studied zooplankton metacommunity.
Article
Multidisciplinary Sciences
Adriana Lozada, Angeline Bertin
Summary: Understanding how biological communities are shaped is a central tenet of community ecology. Recent evidence suggests that decoupling diversity spatial autocorrelation into its positive and negative components can reveal previously undetected community assembly processes and improve understanding of their impacts on different facets of diversity.
SCIENTIFIC REPORTS
(2022)
Article
Ecology
Siwen He, Beixin Wang, Kai Chen, Janne Soininen
Summary: Metacommunity structure is influenced by both deterministic and stochastic factors, with their importance varying depending on environmental and trait heterogeneity. Environmental filtering is most strongly associated with regions of moderate environmental heterogeneity and high trait heterogeneity. Associations with stochastic factors are more variable and difficult to predict.
FRESHWATER BIOLOGY
(2023)
Article
Ecology
C. S. Sieger, T. Hovestadt
Summary: The study found an interaction effect between dispersal strategy and spatial variance - lower emigration under habitat-dependent than under random emigration if spatial heterogeneity is low, but eventually a reversal of this ranking if heterogeneity becomes large. Landscapes with sharp transition of habitat attributes result in a high degree of spatial sorting, while fractal landscapes do not. Emigration rates are overall lowest when spatial variation is highest.
ECOLOGICAL PROCESSES
(2021)
Article
Ecology
Susan C. C. Gordon, Julien G. A. Martin, Jeremy T. Kerr
Summary: Dispersal plays a crucial role in metacommunity structure, but its interactions with other key processes have been rarely explored. In this study, a metacommunity consisting of butterflies, flowering plants, and butterfly predators in naturally fragmented habitats was investigated. The results show that species with different dispersal abilities interact differently with predators and mutualist partners, shaping the composition of the metacommunity.
Article
Biodiversity Conservation
Yang Liu, Li Lin, Haixin Zhang, Guifang Zhang, Zijun Wu, Yanping Zhang, Bin Kang
Summary: By analyzing seasonal fish data from the Poyang Lake, it was found that fish metacommunity displayed quasi-structures, with different paradigm characteristics in different seasons. The diversity and community structure of fish were influenced by environmental and spatial factors to varying degrees in different seasons. Additionally, the change in hydrological conditions caused seasonal shifts in metacommunity dynamics.
ECOLOGICAL INDICATORS
(2023)
Article
Biodiversity Conservation
William R. Budnick, Joseph L. Mruzek, Chad A. Larson, Sophia I. Passy
Summary: The quantities and ratios of nutrients play a role in the topological properties of algal co-occurrence networks, while climate and space also impact network topology. Nutrient supply was positively related to network size, and climatic and spatial variables had significant effects on network topology, depending on nutrient context.
Article
Ecology
Paul Savary, Jean-Christophe Foltete, Herve Moal, Stephane Garnier
Summary: This article discusses the potential benefits of integrating landscape graphs and genetic graphs in landscape genetics. By comparing different features and partitions of these graphs, the influence of intra-patch features and inter-patch connectivity on genetic structure can be examined, as well as the sensitivity of genetic diversity and differentiation to landscape factors. Additionally, the integration of these graphs through gravity models can enhance their joint use for various theoretical and applied objectives.
Article
Environmental Sciences
Alexander G. Rusanov, Tibor Biro, Keve T. Kiss, Krisztina Buczko, Istvan Grigorszky, Andras Hidas, Monika Duleba, Zsuzsa Trabert, Angela Foldi, Eva Acs
Summary: Spatial variables were more influential than climatic factors in controlling species and functional group composition, with climatic heterogeneity showing a significant positive relationship with beta diversity. However, there was no significant relationship between spatial extent and beta diversity, indicating that spatial effects on beta-diversity were affected by anthropogenic disturbance.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Biodiversity Conservation
Donghai Zhang, Honghong Ren, Peijun Sun, Peiqing Jing, Bin Guo
Summary: The extraction of ecological sources and delineation of ecological corridors in the Yanhe River Basin require a unique approach due to the fragmented nature of patches and rapid vegetation recovery. A multidimensional evaluation framework and a three-dimensional ecological adaptability cycle model were used to successfully extract ecological sources and delineate ecological corridors.
ECOLOGICAL INDICATORS
(2023)
Article
Ecology
Ankit Vikrant, Susanne Pettersson, Martin Nilsson Jacobi
Summary: This study finds that large contiguous landscapes with high dispersal characteristics promote high species richness due to spatial heterogeneity in interspecies interactions. The spatially coherent metacommunity can be represented by an effective species interaction-web with lower complexity than the constituent habitats. These findings provide a new mechanism for supporting high diversity in large heterogeneous landscapes.
ECOLOGY AND EVOLUTION
(2022)
Article
Biodiversity Conservation
Han Y. H. Chen, Shekhar R. Biswas, Timothy M. Sobey, Brian W. Brassard, Samuel F. Bartels
JOURNAL OF APPLIED ECOLOGY
(2018)
Article
Plant Sciences
Michelle F. DiLeo, Rolf Holderegger, Helene H. Wagner
JOURNAL OF ECOLOGY
(2018)
Article
Biochemistry & Molecular Biology
Brenna R. Forester, Jesse R. Lasky, Helene H. Wagner, Dean L. Urban
Article
Forestry
Shekhar R. Biswas, Azim U. Mallik, Nicholas T. Braithwaite, Prity L. Biswas
FOREST ECOLOGY AND MANAGEMENT
(2019)
Article
Ecology
Dong He, Shekhar R. Biswas
Article
Ecology
Na-Na Xu, Kai Jiang, Shekhar R. Biswas, Xin Tong, Rong Wang, Xiao-Yong Chen
FRONTIERS IN ECOLOGY AND EVOLUTION
(2019)
Article
Multidisciplinary Sciences
Ronan Marrec, Hossam E. Abdel Moniem, Majid Iravani, Branko Hricko, Jahan Kariyeva, Helene H. Wagner
SCIENTIFIC REPORTS
(2020)
Article
Biodiversity Conservation
Edineusa P. Santos, Helene H. Wagner, Silvio F. B. Ferraz, Tadeu Siqueira
JOURNAL OF APPLIED ECOLOGY
(2020)
Article
Forestry
Bo Liu, Shekhar R. Biswas, Jian Yang, Zhihua Lite, Hong S. He, Yu Liang, Matthew K. Lau, Yunting Fang, Shijie Han
FOREST ECOLOGY AND MANAGEMENT
(2020)
Article
Biodiversity Conservation
Dong He, Shehkar R. Biswas, Ming-Shan Xu, Tong-Hui Yang, Wen-Hui You, En-Rong Yan
Summary: This study investigated the effects of trait integration and soil fertility on species richness and trait diversity in woody communities in subtropical Chinese forests. The results showed that intraspecific trait variability plays a crucial role in promoting biodiversity, while less fertile sites had stronger trait integration, leading to decreased taxonomic and functional diversity. The negative association between trait integration and species richness was stronger when considering intraspecific variation, suggesting that intraspecific trait variability can impact species distribution and occurrence.
Article
Plant Sciences
Felipe Torres-Vanegas, Adam S. Hadley, Urs G. Kormann, F. Andrew Jones, Matthew G. Betts, Helene H. Wagner
Summary: Deforestation can have direct and indirect impacts on plant mating quality. Functional shifts in the pollinator community due to deforestation can reduce genetic diversity in pollen loads and affect the success of plant mating.
JOURNAL OF ECOLOGY
(2021)
Article
Plant Sciences
Li-Ting Zheng, Han Y. H. Chen, Shekhar R. Biswas, Di-Feng Bao, Xiao-Chen Fang, Muhammad Abdullah, En-Rong Yan
Summary: This study reveals that the positive effects of tree mixtures on productivity are strengthened by the increasing multidimensional functional dispersion (FDis) and the community-weighted means (CWMs) of leaf nitrogen content, enhancing the complementarity effect rather than the selection effect.
JOURNAL OF ECOLOGY
(2021)
Review
Biodiversity Conservation
Shekhar R. Biswas, Jingyin Xiang, Hui Li
Summary: Habitat disturbances generally reduce spatial autocorrelation in species diversity by an average of 15.5% and reduce its range by 21.4% due to disturbance-driven changes in environmental conditions. However, the observed effect varied markedly among different scales of disturbance. Despite limited studies on disturbance effects on spatial patterns of functional diversity, the overall effect was found to be non-significant.
Article
Forestry
Junkang Ouyang, Shekhar R. Biswas, Chaoqin Yin, Yanxia Qing, Prity L. Biswas
Summary: Our study reveals that the relative importance of environmental and biotic filtering in shaping forest communities can vary between disturbed and undisturbed forests. Disturbed plantations prioritize resource acquisition strategy, while mature forests prioritize conservation strategy. Intraspecific competition plays a significant role in plantations, while interspecific competition is more important in mature forests.
Article
Plant Sciences
Felipe Torres-Vanegas, Adam S. Hadley, Urs G. Kormann, Frank Andrew Jones, Matthew G. Betts, Helene H. Wagner
Summary: Resolving the consequences of pollinator foraging behaviour for plant mating systems is a fundamental challenge in evolutionary ecology. Studies have shown that pollinators adopt different foraging tactics, such as complete trapline foraging, sample-and-shift trapline foraging, and territorial foraging. These foraging tactics have divergent consequences for plant mating systems.