Successful microbial colonization of space in a more dispersed manner

AbstractMany organisms live in habitats with limited nutrients or space, competition for these resources is ubiquitous. Although spatial factors related to the population’s manner of colonizing space influences its success in spatial competition, what these factors are and to what extent they influence the outcome remains underexplored. Here, we applied a simulated competitive model to explore the spatial factors affecting outcomes of competition for space. By quantifying spatial factors, we show that colonizing space in a more dispersed manner contributes to microbial competitive success. We also find that the competitive edge deriving from a more dispersed manner in colonization can compensate for the disadvantage arising from either a lower growth rate or lower initial abundance. These findings shed light on the role of space colonization manners on maintaining biodiversity within ecosystems and provide novel insights critical for understanding how competition for space drives evolutionary innovation.

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Successful microbial colonization of space using an anti-aggregation strategy

10.1101/2021.07.09.451734 ◽

2021 ◽

Author(s):

Xiaonan Liu ◽

Miaoxiao Wang ◽

Yong Nie ◽

Xiao-Lei Wu

Keyword(s):

Spatial Competition ◽

Microbial Colonization ◽

Lower Growth ◽

Factors Affecting ◽

Spatial Factors ◽

Evolutionary Innovation ◽

Competition For Space ◽

Competitive Model ◽

Competitive Success ◽

Space Colonization

Many organisms live in habitats with limited nutrients or space, competition for these resources is ubiquitous. Although spatial factors related to population's manner of colonizing space influences its success in spatial competition, what these factors are and to what extent they influence the outcome remains under-explored. Here, we applied a simulated competitive model to explore the spatial factors affecting outcomes of competition for space. By quantifying spatial factors using 'Space Accessibility', we show that colonizing space in an anti-aggregation manner contributes to microbial competitive success. We also find that the competitive edge derived from being anti-aggregation in colonizing space, which results in a higher 'Space Accessibility', neutralizes the disadvantage arising from either lower growth rate or lower initial abundance. These findings shed light on the role of space colonization manners on maintaining biodiversity within ecosystems and provide novel insights critical for understanding how competition for space drives evolutionary innovation.

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Using Hotspots Algebra to analyze crime events and their urban context

Revista Colombiana de Computación ◽

10.29375/25392115.3202 ◽

2017 ◽

Vol 18 (1) ◽

pp. 9-26

Author(s):

Lenin Heredia G. ◽

Germán E. Bravo C.

Keyword(s):

Temporal Analysis ◽

The Other ◽

Crime Analysis ◽

Temporal Context ◽

Urban Context ◽

Factors Affecting ◽

Spatial Factors ◽

Spatial Influence ◽

Police Agencies ◽

The Subject

Hotspots analysis is essential in the criminology field and quite important in decisions making for police agencies because it permits the enhancement of allocation of police resources for timely and adequate actions. There exist different techniques for analysis and generation of hotspots, limited by its difficulty to consider other urban and demographic factors that could be the cause of the emergence of these hotspots or their influence over other factors. On the other hand, it is also difficult and unusual to analyze hotspots in a temporal context. This paper seeks, through spatial-temporal operations based in hotspots, to go beyond of classical crime analysis with hotspots, by looking for the spatial influence of other spatial factors over and analyzing also their relationship in a temporal context. The paper initially presents and analyze the performance of various techniques for hotspot generation and determines that STAC technique from CrimeStat is the more suitable for the proposed objective. Then, it defines a hotspot algebra allowing the combined study of crime and spatial factors affecting it and/or been affected by crime events. Temporal analysis includes the hotspots generation for days of the week and/or months in a year. In this way it is possible to study causality relationships and/or correlations among the studied phenomena and the spatial-temporal environment where crime occurs. Therefore, it is possible to define and apply informed actions, primarily concerning the allocation of police resources. Finally, it shows some application examples, thematic as well as temporal analysis, of hotspot algebra using crime data from Bogota for the years 2011 to 2013; finally, some future works in the subject are proposed.

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Spatial Factors Affecting User’s Perception in Map Simplification: An Empirical Analysis

Web and Wireless Geographical Information Systems - Lecture Notes in Computer Science ◽

10.1007/978-3-540-89903-7_14 ◽

2008 ◽

pp. 152-163

Author(s):

Vincenzo Del Fatto ◽

Luca Paolino ◽

Monica Sebillo ◽

Giuliana Vitiello ◽

Genoveffa Tortora

Keyword(s):

Empirical Analysis ◽

Factors Affecting ◽

Spatial Factors

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Methodological, temporal and spatial factors affecting modeled occupancy of resident birds in the perennially cultivated landscape of Uttar Pradesh, India

Landscape Ecology ◽

10.1007/s10980-011-9666-3 ◽

2011 ◽

Vol 27 (1) ◽

pp. 59-71 ◽

Cited By ~ 8

Author(s):

K. S. Gopi Sundar ◽

Swati A. Kittur

Keyword(s):

Uttar Pradesh ◽

Factors Affecting ◽

Spatial Factors ◽

Temporal And Spatial

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Spatial factors affecting statistical power in testing marine fauna displacement

Ecological Applications ◽

10.1890/10-1887.1 ◽

2011 ◽

Vol 21 (7) ◽

pp. 2756-2769 ◽

Cited By ~ 7

Author(s):

B. Pérez Lapeña ◽

K. M. Wijnberg ◽

A. Stein ◽

S. J. M. H. Hulscher

Keyword(s):

Statistical Power ◽

Marine Fauna ◽

Factors Affecting ◽

Spatial Factors

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Surface and Mechanical Properties of Cellulose Micro-Fiber Reinforced Recycle Polyethylene Film

Materials Science Forum ◽

10.4028/www.scientific.net/msf.695.469 ◽

2011 ◽

Vol 695 ◽

pp. 469-472 ◽

Cited By ~ 6

Author(s):

Duangdao Aht-Ong ◽

Duangduen Atong ◽

Chiravoot Pechyen

Keyword(s):

Film Formation ◽

Fiber Composites ◽

Microbial Colonization ◽

Morphological Properties ◽

Factors Affecting ◽

Fiber Loading ◽

Twin Screw ◽

Extrusion Blow Molding ◽

Composites Film ◽

Composite Properties

This work involved a study of polymer-fiber composites as biodegradable packaging made from recycled polyethylene (r-PE) and chemical-treated cotton fabric waste micro fibers. A compatibilizer, polyethylene-graft-maleic anhydride (PE-g-MA), was used to improve properties of the composites. Factors affecting composite properties were investigated including % PE-g-MA loading, and % fiber loading. The fiber composites were prepared by melt-blending technique. The materials were first mixed by a twin-screw extruder and shaped into samples by an extrusion blow molding machine. The samples were then characterized for mechanical, and morphological properties. It was found that properties of the composites were improved by adding the compatibilizer. Optimum properties of the composites were found at 10% (wt%) PE-g-MA loading. It was also revealed that tensile strength and modulus was found to increase as the % fiber loading was increased. SEM micrographs confirmed that interfacial bonding between the cellulose fibers and the r-PE matrix was enhanced as fewer voids at the interfaces were revealed by adding the PE-g-MA compatibilizer to the composites. Film formation occurred on all composites even if the polymer itself was inert biodegradation. The microbial colonization affected mainly of surface properties r-PE composites while changes were monitored also in the bulk properties of cellulose microfiber.

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