Estimation of ecological resistance of forests around the Territory of the Vladivostok City agglomeration

An essential property of microbial communities is the ability to survive a disturbance. Survival can be achieved through resistance, the ability to absorb effects of a disturbance without a notable change, or resilience, the ability to recover after being perturbed by a disturbance. These concepts have long been applied to the analysis of ecological systems, although their interpretations are often subject to debate. Here, we show that this framework readily lends itself to the dissection of the bacterial response to antibiotic treatment, where both terms can be unambiguously defined. The ability to tolerate the antibiotic treatment in the short term corresponds to resistance, which primarily depends on traits associated with individual cells. In contrast, the ability to recover after being perturbed by an antibiotic corresponds to resilience, which primarily depends on traits associated with the population. This framework effectively reveals the phenotypic signatures of bacterial pathogens expressing extended-spectrum β-lactamases (ESBLs) when treated by a β-lactam antibiotic. Our analysis has implications for optimizing treatment of these pathogens using a combination of a β-lactam and a β-lactamase (Bla) inhibitor. In particular, our results underscore the need to dynamically optimize combination treatments based on the quantitative features of the bacterial response to the antibiotic or the Bla inhibitor.

Download Full-text

Ecological Resistance Movements: The Global Emergence of Radical and Popular Environmentalism

Environmental History ◽

10.2307/3985173 ◽

1996 ◽

Vol 1 (3) ◽

pp. 103

Author(s):

Jan G. Laarman ◽

Bron Raymond Taylor

Keyword(s):

Resistance Movements ◽

Ecological Resistance

Download Full-text

ecological resistance [n]

Encyclopedic Dictionary of Landscape and Urban Planning ◽

10.1007/978-3-540-76435-9_3866 ◽

2010 ◽

pp. 277-277

Keyword(s):

Ecological Resistance

Download Full-text

Construction of ecological security pattern based on the importance of ecosystem service functions and ecological sensitivity assessment: a case study in Fengxian County of Jiangsu Province, China

Environment Development and Sustainability ◽

10.1007/s10668-020-00596-2 ◽

2020 ◽

Vol 23 (1) ◽

pp. 563-590

Author(s):

Xingxing Jin ◽

Luyao Wei ◽

Yi Wang ◽

Yuqi Lu

Keyword(s):

Economic Development ◽

Ecosystem Service ◽

Ecological Environment ◽

Small Scale ◽

Ecological Security ◽

Ecological Sensitivity ◽

Resistance Surface ◽

Ecological Resistance ◽

Security Pattern

AbstractThe construction of ecological security pattern is one of the important ways to alleviate the contradiction between economic development and ecological protection, as well as the important contents of ecological civilization construction. How to scientifically construct the ecological security pattern of small-scale counties, and achieve sustainable economic development based on ecological environment protection, it has become an important proposition in regulating the ecological process effectively. Taking Fengxian County of China as an example, this paper selected the importance of ecosystem service functions and ecological sensitivity to evaluate the ecological importance and identify ecological sources. Furthermore, we constructed the ecological resistance surface by various landscape assignments and nighttime lighting modifications. Through a minimum cumulative resistance model, we obtained ecological corridors and finally constructed the ecological security pattern comprehensively combining with ecological resistance surface construction. Accordingly, we further clarified the specific control measures for ecological security barriers and regional functional zoning. This case study shows that the ecological security pattern is composed of ecological sources and corridors, where the former plays an important security role, and the latter ensures the continuity of ecological functions. In terms of the spatial layout, the ecological security barriers built based on ecological security pattern and regional zoning functions are away from the urban core development area. As for the spatial distribution, ecological sources of Fengxian County are mainly located in the central and southwestern areas, which is highly coincident with the main rivers and underground drinking water source area. Moreover, key corridors and main corridors with length of approximately 115.71 km and 26.22 km, respectively, formed ecological corridors of Fengxian County. They are concentrated in the western and southwestern regions of the county which is far away from the built-up areas with strong human disturbance. The results will provide scientific evidence for important ecological land protection and ecological space control at a small scale in underdeveloped and plain counties. In addition, it will enrich the theoretical framework and methodological system of ecological security pattern construction. To some extent, it also makes a reference for improving the regional ecological environment carrying capacities and optimizing the ecological spatial structure in such kinds of underdeveloped small-scale counties.

Download Full-text

Distributions of Invasive Arthropods across Heterogeneous Urban Landscapes in Southern California: Aridity as a Key Component of Ecological Resistance

Insects ◽

10.3390/insects10010029 ◽

2019 ◽

Vol 10 (1) ◽

pp. 29 ◽

Cited By ~ 1

Author(s):

Weston Staubus ◽

Savanah Bird ◽

Savannah Meadors ◽

Wallace Meyer

Keyword(s):

Native Species ◽

Southern California ◽

Propagule Pressure ◽

Urban Systems ◽

Urban Landscapes ◽

Resource Subsidies ◽

Ecological Resistance ◽

Large Numbers ◽

Sage Scrub ◽

Grassland Habitats

Urban systems often support large numbers of non-native species, but due to the heterogeneity of urban landscapes, species are not evenly distributed. Understanding the drivers of ecological resistance in urban landscapes may help to identify habitats that are most resistant to invasion, and inform efforts to model and conserve native biodiversity. We used pitfall traps to survey non-native ground-dwelling arthropods in three adjacent, low-elevation habitat types in southern California: California sage scrub, non-native grassland, and suburban development. We found that non-native species were fewer and less widely distributed in the sage scrub and grassland habitats. Due to the proximity of our sites, differences in propagule pressure is an unlikely explanation. Instead, we suggest that the absence of water subsidies in the sage scrub and grassland habitats increases those habitats’ resistance to arthropod invasions. Comparisons to studies conducted at fragments closer to the coast provide further support for the relationship between aridity and invasibility in southern California. Our findings highlight that inland fragments are important for conserving native arthropod diversity, that models of non-native species distributions in arid and semi-arid urban systems should include aridity measures, and that reducing resource subsidies across the region is critical to mitigating spread of non-natives.

Download Full-text