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Microbial community structure across grazing treatments and environmental gradients in the Serengeti

Soil Ecology Letters 2022年第1期4卷 45-56页

作者： Bo Maxwell Stevens Derek Lee Sonderegger Nancy Collins johnson School of Earth and Sustainability Northern Arizona UniversityFlagstaffAZ 86011USA Department of Mathematics and Statistics Northern Arizona UniversityFlagstaffAZ 86001USA Department of Biological Sciences Northern Arizona UniversityFlagstaffAZ 86011USA

As one of the last remaining naturally grazed ecosystems on Earth,the Serengeti National Park is an ideal location to study the influence of migratory mammals on the structure of microbial communities and the factors that generate biogeography of soil ***,volcanic inputs generate environmental gradients that may also structure microbial *** studied 16S rRNA amplicons in a 13-year herbivore removal experiment to examine the influence of grazing and environmental gradients on the natural distribution of soil *** of mammalian herbivores shifted microbial community structure,with 31 taxa that were significant indicator taxa of the ungrazed treatment and three taxa that were indicators of the grazed *** abundance of many taxa were correlated with soil texture,phosphorus,iron,calcium and rainfall,and the evenness of taxa within samples was also correlated with these *** general linear mixed effects models with single predictors of multiple,highly correlated variables of beta diversity were consistent with a significant,but weak(2%),effect of grazing,and stronger effects of phosphorus(14%).Beta diversity of microbial communities was greater in grazed than in ungrazed plots;suggesting that the impacts of grazing on community assembly of microbes results from deterministic environmental filtering caused by the influence of herbivores on plant communities and soil properties rather than stochastic dispersal via herds of large *** herbivore effects are superimposed on deterministic environmental filtering by natural soil and precipitation gradients across the Serengeti.

关键词： Soil bacteria Community ecology Grazing Serengeti National Park Soil texture Phosphorus

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Exploring kidney biopsy findings in congenital heart diseases:Insights beyond cyanotic nephropathy

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World Journal of Nephrology 2024年第1期13卷 25-32页

作者： Jose Daniel Juarez-Villa Iván Zepeda-Quiroz Sebastián Toledo-Ramírez Victor Hugo Gomez-johnson Francisco Pérez-Allende Brian Ricardo Garibay-Vega Francisco E Rodríguez Castellanos Bernardo Moguel-González edgar Garcia-Cruz Salvador Lopez-Gil Department of Nephrology Instituto Nacional de Cardiología Ignacio ChavezMexico City 14080Mexico Congenital Heart Disease Instituto Nacional de Cardiología Ignacio ChavezMexico City 14080Mexico

BACKGROUND The association between congenital heart disease and chronic kidney disease is well *** mechanisms of kidney damage associated with congenital heart disease have been *** etiology of kidneydisease has commonly been considered to be secondary to focal segmental glomerulosclerosis(FSGS),however,this has only been demonstrated in case reports and not in observational or clinical *** To identify baseline and clinical characteristics,as well as the findings in kidney biopsies of patients with congenital heart disease in our *** This is a retrospective observational study conducted at the Nephrology Depart-ment of the National Institute of Cardiology“Ignacio Chávez”.All patients over 16 years old who underwent percutaneous kidney biopsy from January 2000 to January 2023 with congenital heart disease were included in the *** Ten patients with congenital heart disease and kidney biopsy were *** average age was 29.00 years±15.87 years with pre-biopsy proteinuria of 6193 mg/24 h±6165 mg/24 *** most common congenital heart disease was Fallot’s tetralogy with 2 cases(20%)and ventricular septal defect with 2(20%)*** the 10 cases,one case of IgA nephropathy and one case of membranoproliferative glomerulonephritis associated with immune complexes were found,receiving specific treatment after histopathological diagnosis,delaying the initiation of kidney replacement *** remaining 8 cases(80%),one case of FSGS with perihilar variety was found,while the other 7 cases were non-specific *** Determining the cause of chronic kidney disease can help in delaying the need for kidney replacement *** 2 out of 10 patients in our study,interventions were performed,and initiation of kidney replacement therapy was *** studies are needed to determine the usefulness of kidney biopsy in patients with congenital heart disease.

关键词： Renal biopsy Congenital heart disease Chronic kidney disease Focal segmental glomerulosclerosis

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Soil water content and nitrogen differentially correlate with multidimensional leaf traits of two temperate broadleaf species

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Plant Diversity 2023年第6期45卷 694-701页

作者： Ming-Yue Jin Daniel J.johnson Guang-Ze Jin Qing-Xi Guo Zhi-Li Liu Center for Ecological Research Key Laboratory of Sustainable ForestEcosystem Management-Ministry of EducationNortheast Asia Biodiversity Research CenterNortheast Forestry UniversityHarbin 150040HeilongjiangChina School of Forest Resources and Conservation University of FloridaGainesvilleFLUSA

The variation and correlation of leaf economics and vein traits are crucial for predicting plant ecological strategies under different environmental ***,correlations between these two suites of traits and abiotic factors such as soil water and nitrogen content remain *** measured leaf economics and vein traits as well as soil water and nitrogen content for two different shade-tolerant species(Betula platyphylla and Acer mono)in four mixed broadleaved-Korean pine(Pinus koraiensis)forests along a latitudinal gradient in Northeast *** found that leaf economics traits and vein traits were decoupled in shade-intolerant species,Betula platphylla,but significantly coupled in a shadetolerant species,*** found stronger correlations among leaf traits in the shade tolerant species than in the shade intolerant ***,leaf economic traits were positively correlated with the soil water gradient for both species,whereas vein traits were positively correlated with soil water gradient for the shade intolerant species but negatively correlated in the shade tolerant *** economic traits were positively correlated with soil nitrogen gradient in shade intolerant species but not correlated in shade tolerant species,vein traits were negatively correlated with soil nitrogen gradient in shade tolerant species but not correlated in shade intolerant *** study provides evidence for distinct correlations between leaf economics and vein traits and local abiotic factors of species differing in light *** recommend that the ecological significance of shade tolerance be considered for species when evaluating ecosystem functions and predicting plant responses to environmental changes.

关键词： Leaf trait multidimensionality Economics traits Vein traits Soil water content Soil total nitrogen Shade tolerance

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A cultural biography of the prostate

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Asian Journal of Andrology 2022年第2期24卷 228-228页

作者： Ericka johnson Department of Thematic Studies and Centre for Medical Humanities and Bioethics Linkoping UniversityLinkoping 58183Sweden

The prostate is an object of medical *** is also a source of much *** triggers worry about cancer and death,of course,but also about erectile dysfunction,loss of libido,and about being constantly tormented by need to"... 详细信息

关键词： death cancer constantly

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The development of roadside green swales in the Chinese Sponge City Program:Challenges and opportunities

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Frontiers of Engineering Management 2023年第4期10卷 566-581页

作者： Lingwen Lu Faith Ka Shun Chan Matthew johnson Fangfang Zhu Yaoyang Xu Key Laboratory of Urban Environment and Health Ningbo Observation and Research StationInstitute of Urban EnvironmentChinese Academy of Sciences(CAS)Xiamen361021China School of Geographical Sciences Faculty of Science and EngineeringUniversity of Nottingham Ningbo ChinaNingbo315100China CAS Haixi Industrial Technology Innovation Center in Beilun Zhejiang Key Laboratory of Urban Environmental Processes and Pollution ControlNingbo315830China Water@Leeds Research Institute University of LeedsLeeds LS29JTUK School of Geography University of NottinghamNottinghamshireNG72RDUK Department of Civil Engineering Faculty of Science and EngineeringUniversity of Nottingham Ningbo ChinaNingbo 315100China Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control CAS Haixi Industrial Technology Innovation Center in BeilunNingbo 315830China

Roadside green swales have emerged as popular stormwater management infrastructure in urban areas,serving to mitigate stormwater pollution and reduce urban surface water ***,there is a limited understanding of the various types,structures,and functions of swales,as well as the potential challenges they may face in the *** recent years,China has witnessed a surge in the adoption of roadside green swales,especially as part of the prestigious Sponge City Program(SCP).These green swales play a crucial role in controlling stormwater pollution and conserving urban water resources by effectively removing runoff pollutants,including suspended solids,nitrogen,and *** review critically examines recent research findings,identifies key knowledge gaps,and presents future recommendations for designing green swales for effective stormwater management,with a particular emphasis on ongoing major Chinese infrastructure *** the growing global interest in bioswales and their significance in urban development,China's current classification of such features lacks a clear definition or specific consideration of ***,policymakers have often underestimated the adverse environmental effects of road networks,as reflected in existing laws and planning *** review argues that the construction and maintenance of roadside green swales should be primarily based on three critical factors:Wellthought-out road planning,suitable construction conditions,and sustainable long-term *** integration of quantitative environmental standards into road planning is essential to effectively address the challenge of pollution from rainfall *** combat pollution associated with roads,a comprehensive assessment of potential pollution loadings should be carried out,guiding the appropriate design and construction of green swales,with a particular focus on addressing the phenomenon of first *** of the major challenges faced in su

关键词： grass swale infiltration swale bioswale wet swale spongecity

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Strategic potential of multi-energy system towards carbon neutrality:A forward-looking overview

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Energy and Built Environment 2023年第6期4卷 689-708页

作者： Tobi Michael Alabi Favour D.Agbajor Zaiyue Yang Lin Lu Adedayo johnson Ogungbile Department of Mechanical and Energy Engineering Southern University of Science and TechnologyShenzhenChina Department of Building Environment and Energy Engineering The Hong Kong Polytechnic UniversityHong Kong SARChina Data Analytics and Intelligent Systems(DAIS)Laboratory Department of Chemical and Biological EngineeringUniversity of British ColumbiaVancouver BCCanada Department of Construction Management and Quantity Surveying Durban University of TechnologySteve Biko CampusDurbanSouth Africa Department of Building and Real Estate The Hong Kong Polytechnic UniversityHong Kong SARChina

Carbon neutrality is an ambitious goal that has been promulgated to be achieved on or before ***,most of the current energy policies focus more on carbon emission reduction,efficiency and high penetration of renewable ***,this paper presented a review strategy towards carbon neutrality by presenting the concept of a multi-energy system(MES)in terms of its technologies,configuration,modelling and feasibility as zero-emission *** paper addressed some prominent challenges associated with zero-carbon multi-energy systems(ZCMES).Various proven solutions in the extant studies that have been affirmed to alleviate some of these challenges were *** the end,we identified and summarised the current research gaps,and the future directions to ensure the feasibility of ZCMES as a primary strategy towards the actualization of carbon ***,this review work serves as a reference for revising the current energy policies to incorporate a carbon neutrality framework.

关键词： Multi-energy system Integrated energy system Zero-carbon Zero-emission Energy policy

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Modelling the potential consequences of adaptive closure management in a penaeid trawl fishery

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Aquaculture and Fisheries 2023年第2期8卷 190-201页

作者： edward V.Camp Daniel D.johnson Matthew D.Taylor Fisheries and Aquatic Sciences School of ForestFisheriesand Geomatics SciencesUniversity of FloridaGainesville32611FLUSA Port Stephens Fisheries Institute New South Wales Department of Primary IndustriesTaylors Beach RdTaylors BeachNew South Wales2315Australia School of Environmental and Life Sciences University of NewcastleNew South Wales2308Australia

Spatial management of fishing effort can be used to avoid catching undesirable size classes for target species,and improve yield-per-recruit for the exploited *** closure management has been proposed as a means to more effectively utilise spatial management,however these management provisions often lack quantitative evaluation which constrains the information available to inform *** demonstrate the use of a spatially and size structured population dynamics model to evaluate the potential impact of spatial management on a multijurisdictional fishery for a highly migratory species(eastern king prawn,Penaeus[Melicertus]plebejus).Under current conditions in the fishery,the overall effect of closures on harvest was estimated to be comparatively minor,regardless of assumptions about how effort or fisher behavior are affected by spatial *** assumptions about the movement patterns of eastern king prawn had little influence on the impact of closures on overall ***,when effort was increased to historic levels similar to those observed when the closures were implemented,a much greater impact on overall harvest was *** approach taken and simulation outcomes are discussed in the context of spatial management for both eastern king prawn,and penaeid fisheries more broadly.

关键词： Penaeidae Trawl Management strategy evaluation Closures Adaptive management

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Biodiversity and interactions of acidophiles:Key to understanding and optimizing microbial processing of ores and concentrates

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中国有色金属学会会刊：英文版 2008年第6期18卷 1367-1373页

作者： D.B.johnson School of Biological Sciences Bangor University

采矿公司为从低档矿石恢复贱、宝贵的金属，并且为重新调停变得逐渐地知道 microbiological 途径的潜力从操作和放弃的矿地点排干的酸的、充满金属的废水。生物系统出现很多环境并且(有时) 超越常规途径的节俭的优点尽管他们的申请是，... 详细信息

采矿公司为从低档矿石恢复贱、宝贵的金属，并且为重新调停变得逐渐地知道 microbiological 途径的潜力从操作和放弃的矿地点排干的酸的、充满金属的废水。生物系统出现很多环境并且(有时) 超越常规途径的节俭的优点尽管他们的申请是，例如热冶学，别处于每种状况拨出。矿物质用微生物处理为提取黄金，铜，铀和钴被利用了，并且当前的开发正在指向另外的贱金属。最近，我们 biomining 环境，并且微生物怎么与对方一起交往的微生物学的差异的知识和理解有大增加。从模仿了搅动的坦克和堆生物反应器系统的实验室实验的结果证明了微生物引起的协会比氧化矿物质的 acidophiles 的纯文化更柔韧，并且也趋于在 bioleaching 和氧化简历的矿石更有效并且专注。纸论述了性质的简明评论和涉及硫化物矿物质的氧化的微生物引起的协会的相互作用，并且这些怎么可能被改编在 biomining 操作遇见未来挑战。

关键词：嗜酸细胞生物采矿生物多样性微生物加工

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Human biology: concepts and current issues Michael D. johnson Michael D. johnson 2nd ed.

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2003年

作者： Michael D. johnson

来源：畅想之星图书光盘版（南... 评论

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Experimental Modelling of Transverse Oscillations in Aquaculture Netting Parallel to the Flow – Sounds Baffling

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China Ocean Engineering 2015年第3期29卷 391-400页

作者： Andrew johnson Cheslav BALASH National Centre for Maritime Engineering and Hydrodynamics Australian Maritime CollegeUniversity of Tasmania Launceston

Numerous studies have been undertaken to improve the viability, durability and suitability of materials and methods used for aquaculture enclosures. While many of the previous studies considered macro-deformation of nets, there is a paucity of information on netting micro-deformation. When aquaculture pens are towed, industry operators have observed the motion described as ＂baffling＂ – the transverse oscillation of the net planes parallel and near parallel to the flow. The difficulty to observe and assess baffling motion in a controlled experimental environment is to sufficiently reproduce netting boundary conditions and the flow environment experienced at sea. The focus of the present study was to develop and assess experimental methods for visualisation and quantification of these transverse oscillations. Four netrig configurations with varied boundary conditions and model-netting properties were tested in a flume tank. While the Reynolds number was not equivalent to full-scale, usage of the pliable and fine mesh model netting that enabled baffling to develop at low flow velocities was deemed to be of a larger relevance to this initial study. Baffling was observed in the testing frame that constrained the net sheet on the leading edge, similarly to a flag attachment onto a pole. Baffling motion increased the hydrodynamic drag of the net by 35%–58% when compared to the previously developed formula for taut net sheets aligned parallel to the flow. Furthermore, it was found that the drag due to baffling decreased with the increasing velocity over the studied Reynolds numbers（below 200）; and the drag coefficient was non-linear for Reynolds numbers below 120. It is hypothesised that baffling motion is initially propagated by vortex shedding of the netting twine which causes the netting to oscillate; there after the restoring force causes unstable pressure differences on each side of the netting which excites the amplitude of the netting oscillations.

关键词： aquaculture pen baffling model net testing netting drag netting micro-deformation

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