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Responses Of Nitrifying Microbes In Southern California Native Plant Communities To Additions Of Nitrogen
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Book Synopsis Responses of Nitrifying Microbes in Southern California Native Plant Communities to Additions of Nitrogen by : Robert R. Mustard
Download or read book Responses of Nitrifying Microbes in Southern California Native Plant Communities to Additions of Nitrogen written by Robert R. Mustard and published by . This book was released on 2008 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Chronic Dry Atmospheric Nitrogen (N) Deposition Causes a Change in Soil Microbial Communities in Southern California Semi-Arid Shrublands by : Timothy Grant
Download or read book Experimental Chronic Dry Atmospheric Nitrogen (N) Deposition Causes a Change in Soil Microbial Communities in Southern California Semi-Arid Shrublands written by Timothy Grant and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Global nitrogen (N) deposition has increased since the beginning of the Industrial Revolution due to anthropogenic influences such as the burning of fossil fuels and application of N fertilizer. Increased industrialization is expected to continue to escalate the quantity of N released to ecosystems and the atmosphere. Soil microbial communities are susceptible to this increase in N, as microbial activity can be limited by N and these communities are known to regulate biogeochemical cycles. In this study, the response of bacterial functional groups (FG) to N addition (> 50 Kg N ha-1 yr-1) was quantified in Southern California semi-arid topsoil (0-10 cm). Soil physical-chemical properties and enzymatic activities were also quantified to further understand the direct/indirect effects of N addition on bacterial FG. Experimental N addition significantly increased the abundance N-fixing, chitinolytic, and starch degrading bacteria in semi-arid soils; while increasing N-mineralizing and denitrifying bacteria in coastal sage shrub (CSS) soil. N input also decreased the abundance metal redox bacteria in CCS soil and decreased nitrifying bacteria in chaparral soil. Furthermore, N addition increased the abundance of copiotrophic bacteria (ie: Proteobacteria, Bacteroidetes, and Firicutes) and decreased the abundance of oligotrophic bacteria (ie: Acidobacteria) in semi-arid soils. Canonical correspondence analysis revealed that the majority of FG were influenced by soil pH and extractable nitrate, which were also significantly altered by N addition. Results indicated excessive N input directly and indirectly affected the composition of the soil bacterial community. Understanding the response of the microbial community to N additions is important in predicting ecosystem functionality and stability as anthropogenic N deposition increases.
Book Synopsis The European Nitrogen Assessment by : Mark A. Sutton
Download or read book The European Nitrogen Assessment written by Mark A. Sutton and published by Cambridge University Press. This book was released on 2011-04-14 with total page 665 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presenting the first continental-scale assessment of reactive nitrogen in the environment, this book sets the related environmental problems in context by providing a multidisciplinary introduction to the nitrogen cycle processes. Issues of upscaling from farm plot and city to national and continental scales are addressed in detail with emphasis on opportunities for better management at local to global levels. The five key societal threats posed by reactive nitrogen are assessed, providing a framework for joined-up management of the nitrogen cycle in Europe, including the first cost-benefit analysis for different reactive nitrogen forms and future scenarios. Incorporating comprehensive maps, a handy technical synopsis and a summary for policy makers, this landmark volume is an essential reference for academic researchers across a wide range of disciplines, as well as stakeholders and policy makers. It is also a valuable tool in communicating the key environmental issues and future challenges to the wider public.
Book Synopsis Root Zone Microbial Communities and Restoration of Plant Communities in Owens Valley, California - Phase 1 by :
Download or read book Root Zone Microbial Communities and Restoration of Plant Communities in Owens Valley, California - Phase 1 written by and published by . This book was released on 2007 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: The future quality and quantity of water for Los Angeles, CA, depends on effective environmental management of both water and land use in Owens Valley. Long-term environmental monitoring will be used to assess progress towards attaining sustainable restoration goals. Re-establishment of native plant communities on previously cultivated lands is a major land management goal. Establishment of desired plant communities may, in turn, depend on relationships between soil microorganisms and plants. These interrelationships depend on soil characteristics affecting the microbial communities. This study was designed to provide survey information on microbial communities in soils from native and disturbed areas at ten locations spanning Owens Valley. At each location, five surface soil samples were collected along a 150-m transect through native vegetation, and ten soil samples were collected along a 300-m transect through disturbed areas. Soils were characterized by soil texture, total carbon, total nitrogen, organic carbon, organic nitrogen, leachable carbon, leachable nitrogen, carbon and nitrogen isotopic ratios, microbial community biomass, and lipid profiles of soil microbial community compositions. Analysis of variance, Tukey's test for comparing multiple means, hierarchical cluster analysis, and principal component analysis were used to show differences in soil characteristics. While native and disturbed soil samples were shown to differ in many characteristics, the largest and most frequently shown differences were related to the soil microbial communities. Total soil microbial biomass was significantly and consistently higher in native soils than soils from disturbed areas. In conclusion, soils supporting native plant communities were most different from those in disturbed areas in characteristics related to soil microbiology.
Download or read book General Technical Report INT. written by and published by . This book was released on 1994 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings written by and published by . This book was released on 1994 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Open-file Report written by and published by . This book was released on 2000 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings--ecology and Management of Annual Rangelands by : Stephen B. Monsen
Download or read book Proceedings--ecology and Management of Annual Rangelands written by Stephen B. Monsen and published by . This book was released on 1994 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annual weeds continue to expand throughout the West eliminating many desirable species and plant communities. Wildfires are now common on lands infested with annual weeds, causing a loss of wildlife habitat and other natural resources. Measures can be used to reduce burning and restore native plant communities, but restoration is difficult and costly.
Book Synopsis Abstracts of the ... General Meeting of the American Society for Microbiology by : American Society for Microbiology. General Meeting
Download or read book Abstracts of the ... General Meeting of the American Society for Microbiology written by American Society for Microbiology. General Meeting and published by . This book was released on 2006 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tamarix written by Martin F. Quigley and published by Oxford University Press. This book was released on 2013-02-04 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: The invasive species Tamarix first attracted the public eye in the 1990's when it was suspected of contributing to widespread drought and wildfires in the Western United States. Once purported to consume as much water as entire cities, very few plant species have received as much scientific, public, and political discussion and debate as Tamarix. Written by 44 of the field's most prominent scholars and scientists, this volume compiles 25 essays on this fascinating species--its biology, ecology, politics, management, and the ethical issues involved with designating a particular species as "good" or "bad". The book analyzes the controversy surrounding the Tamarisk's role in our ecosystems and what should be done about it.
Book Synopsis Underwater Methods for Study of Salmonids in the Intermountain West by : Russell F. Thurow
Download or read book Underwater Methods for Study of Salmonids in the Intermountain West written by Russell F. Thurow and published by . This book was released on 1994 with total page 910 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 2nd Interface Between Ecology and Land Development in California by : Jon E. Keeley
Download or read book 2nd Interface Between Ecology and Land Development in California written by Jon E. Keeley and published by . This book was released on 2000 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Plant Competition in a Changing World by : Judy Simon
Download or read book Plant Competition in a Changing World written by Judy Simon and published by Frontiers Media SA. This book was released on 2017-06-22 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Competitiveness describes a key ability important for plants to grow and survive abiotic and biotic stresses. Under optimal, but particularly under non-optimal conditions, plants compete for resources including nutrients, light, water, space, pollinators and other. Competition occurs above- and belowground. In resource-poor habitats, competition is generally considered to be more pronounced than in resource-rich habitats. Although competition occurs between different players within an ecosystem such as between plants and soil microorganisms, our topic focusses on plant-plant interactions and includes inter-specific competition between different species of similar and different life forms and intra-specific competition. Strategies for securing resources via spatial or temporal separation and different resource needs generally reduce competition. Increasingly important is the effect of invasive plants and subsequent decline in biodiversity and ecosystem function. Current knowledge and future climate predictions suggest that in some situations competition will be intensified with occurrence of increased abiotic (e.g. water and nutrient limitations) and biotic stresses (e.g. mass outbreak of insects), but competition might also decrease in situations where plant productivity and survival declines (e.g. habitats with degraded soils). Changing interactions, climate change and biological invasions place new challenges on ecosystems. Understanding processes and mechanisms that underlie the interactions between plants and environmental factors will aid predictions and intervention. There is much need to develop strategies to secure ecosystem services via primary productivity and to prevent the continued loss of biodiversity. This Research Topic provides an up-to-date account of knowledge on plant-plant interactions with a focus on identifying the mechanisms underpinning competitive ability. The Research Topic aims to showcase knowledge that links ecological relevance with physiological processes to better understanding plant and ecosystem function.
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1973 with total page 1216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Arid Lands Management by : T. W. Hoekstra
Download or read book Arid Lands Management written by T. W. Hoekstra and published by University of Illinois Press. This book was released on 1999 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offers various directions for both research and management.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2002 with total page 854 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Plant Microbiome by : Lilia C. Carvalhais
Download or read book The Plant Microbiome written by Lilia C. Carvalhais and published by Humana. This book was released on 2020-11-08 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides methods, protocols, and reviews that are useful for new and experienced plant microbiome researchers. Chapters guide readers through the investigation of microbiomes associated with seeds, sampling microbiomes from plant compartments and tissues, culture-based methods, culture-independent metabarcoding methods, methods to obtain DNA and perform metabarcoding, protocols to block PCR amplification from the plant host, qPCR-based methods, editing of specific genes in Bacillus genomes, and Streptomycetes and plant microbial indicators. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and cutting-edge, The Plant Microbiome: Methods and Protocols aims to ensure successful results in the further study of this vital field.
