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Positive And Negative Dynamics Of Plant Plant Interactions Along Environmental Gradients
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Book Synopsis Positive and Negative Dynamics of Plant-plant Interactions Along Environmental Gradients by : Lea Lucia Anna Märtin
Download or read book Positive and Negative Dynamics of Plant-plant Interactions Along Environmental Gradients written by Lea Lucia Anna Märtin and published by . This book was released on 2010 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Positive Plant Interactions and Community Dynamics by : Francisco Pugnaire
Download or read book Positive Plant Interactions and Community Dynamics written by Francisco Pugnaire and published by CRC Press. This book was released on 2010-02-09 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ever since the concept of the "struggle for life" became the heart of Darwin's theory of evolution, biologists have studied the relevance of interactions for the natural history and evolution of organisms. Although positive interactions among plants have traditionally received little attention, there is now a growing body of evidence showing the ef
Book Synopsis Resource Dynamics and Positive and Negative Interactions Between Plants in Arid Systems by : Jane Noeleen Prider
Download or read book Resource Dynamics and Positive and Negative Interactions Between Plants in Arid Systems written by Jane Noeleen Prider and published by . This book was released on 2002 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proposes that the overall outcome of plant interactions along a temporal gradient of resource availability changes from positive during interpulses to negative during pulses. Examines negative interactions between 4 co-dominant chenopod scrubs in arid Acacia papyrocarpa woodlands. Negative interactions were more intense when conditions were least productive. Positive interactions between seedlings also changed over time, depending on the facilitation mechanism. Plant interactions seem to be most intense at the beginning of interpulses when plants are competing for diminishing water, or survivorship is enhanced in the favorable microsites provided by other plants. Later in the interpulse, interactions become less intense as conditions become more stressful and therefore survivorship and growth are affected more by abiotic conditions than plant interactions.
Book Synopsis Positive Interactions and Interdependence in Plant Communities by : Ragan M. Callaway
Download or read book Positive Interactions and Interdependence in Plant Communities written by Ragan M. Callaway and published by Springer Science & Business Media. This book was released on 2007-08-28 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book marshals ecological literature from the last century on facilitation to make the case against the widely accepted individualistic notion of community organization. It examines the idea that positive interactions are more prevalent in physically stressful conditions. Coverage also includes species specificity in facilitative interactions, indirect facilitative interactions, and potential evolutionary aspects of positive interactions.
Book Synopsis Variation in Plant Interactions Along Experimental and Natural Environmental Gradients by : Duane Adolph Peltzer
Download or read book Variation in Plant Interactions Along Experimental and Natural Environmental Gradients written by Duane Adolph Peltzer and published by . This book was released on 2000 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Plant-Environment Interactions by : František Baluška
Download or read book Plant-Environment Interactions written by František Baluška and published by Springer. This book was released on 2010-10-28 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our image of plants is changing dramatically away from passive entities merely subject to environmental forces and organisms that are designed solely for the accumulation of photosynthate. Plants are revealing themselves to be dynamic and highly sensitive organisms that actively and competitively forage for limited resources, both above and below ground, organisms that accurately gauge their circumstances, use sophisticated cost-benefit analysis, and take clear actions to mitigate and control diverse environmental threats. Moreover, plants are also capable of complex recognition of self and non-self and are territorial in behavior. They are as sophisticated in behavior as animals but their potential has been masked because it operates on time scales many orders of magnitude less than those of animals. Plants are sessile organisms. As such, the only alternative to a rapidly changing environment is rapid adaptation. This book will focus on all these new and exciting aspects of plant biology.
Book Synopsis Plant Population Responses to Environmental Change and the Role of Biotic Interactions Along Environmental Gradients by : Simon Doxford
Download or read book Plant Population Responses to Environmental Change and the Role of Biotic Interactions Along Environmental Gradients written by Simon Doxford and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quantifying the Effects of Spatial Environmental Variation and Soil Microbes on Plant Community Dynamics by : Gaurav Sunil Kandlikar
Download or read book Quantifying the Effects of Spatial Environmental Variation and Soil Microbes on Plant Community Dynamics written by Gaurav Sunil Kandlikar and published by . This book was released on 2020 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the processes that determine the diversity and dynamics of plant communities is a longstanding challenge in ecology. Many studies have inferred the role of demographic processes by studying patterns of functional trait variation in natural communities, but studies explicitly linking such functional trait differences to demographic processes are lacking. There has also been a growing realization that the dynamics of plant communities are also influenced by the composition of the soil microbial community, but despite hundreds of empirical studies, predicting the influence of soil microbes on the diversity and dynamics of natural plant communities remains a challenge. In my dissertation I couple ecological theory with field and greenhouse experiments to build a more complete and generalizable understanding of the processes that control plant biodiversity. In Chapter One, I ask whether community-wide shifts in three key plant functional traits across an environmental gradient reflect variation in the trait-performance relationship across the landscape. To address this question I coupled observational data of variation in plant composition and functional with experimental data on species performance across the same landscape. I asked whether observed trait-environment interactions in the experimental data match observed patterns of trait variation. I found that shifts in community-weighted mean traits generally reflect the direction of trait-environment interactions. But on the whole, the interactions we found were weak, and by themselves might not be sufficient to explain community-wide shifts. This supports the value of plant functional traits for predicting species responses to environmental variation, and highlights a need for more detailed evaluation of how trait-performance relationships change across environments to improve such predictions. Chapters Two and Three focus on how soil microbes can influence diversity in plant communities. Chapter Two begins with a re-analysis of a classic framework that has been extensively used to study how feedbacks between plants and soil microbes can influence species coexistence. A great deal of existing theoretical and empirical work has shown that soil microbes can promote plant coexistence when they generate stabilizing feedback loops, or can drive exclusion when they generate destabilizing feedback loops. I applied insights from modern coexistence theory to show that existing work has largely neglected another avenue by which plant-soil feedbacks can mediate plant coexistence, by driving average fitness differences between plants. This chapter also extends classic models of plant-soil feedback to include more biological detail to show how the effects of plant-soil feedback on plant coexistence depends critically on how plants interact with each other through other processes like resource competition. In the final chapter of my dissertation, I applied the insights from Chapter Two to ask how plant-soil feedbacks influence diversity in southern California annual grassland communities. I conducted a greenhouse experiment to quantify microbially mediated stabilization and fitness differences among fifteen pairs of annual plants. We found that soil microbes frequently generate negative frequency-dependent dynamics that stabilize plant interactions, but they simultaneously generate large average fitness differences between species. The net result is that if the plant species are otherwise competitively equivalent, soil microbes would often drive exclusion among the focal species. This work illustrates the importance of quantifying microbially mediated fitness differences, and points to important avenues for future studies on how soil microbes shape plant diversity.
Book Synopsis Direct and Indirect Consequences of Dominant Plants in Arid Environments by : Diego Alejandro Sotomayor Melo
Download or read book Direct and Indirect Consequences of Dominant Plants in Arid Environments written by Diego Alejandro Sotomayor Melo and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In arid environments, dominant woody plants such as shrubs or trees, usually facilitate a high density of species in their understories. This phenomemon is composed by a series of direct and indirect effects from the dominant plant to the understory species, and among understory species. The aim of this project was to determine these direct and indirect consequences of dominant plant-plant facilitation in a collection of field sites along the coastal Atacama Desert. The following objectives and hypotheses were examined in this project: (1) to summarize and contextualize the breadth of research on indirect interactions in terrestrial plant communities; (2) that the positive effects of dominant plants on understory communities are spatiotemporally scale dependent, from micro- to broad-scale spatial effects, and from within-seasonal to among-year temporal effects; (3) that dominant plants via their different traits determine the outcome of plant-plant interactions; (4) that dominant plants determine the outcome of interactions amongst understory species and that their responses are species-specific; and (5) that facilitation by dominant plants generates sufficiently different micro-environmental conditions that lead to consistent differences in seeds traits of understory plants. Overall, we found that multiple factors determine the outcome of plant-plant interactions along the field sites studied in this project. These factors impact both the direct and indirect effects of dominant woody plants on their understory communities and include species-specific traits of both the dominant and understory species, and the spatial and temporal environmental gradients that manifest their effects at different scales. Dominant plants usually facilitate increased species richness and density of plants in their understory, that in turn mediates effects amongst these species. However, these direct effects seem to have a limit given that at extremely stressful environmental conditions they tend to change to neutral and even competitive effects of canopies on their understories. This provides evidence that positive effects of dominant plants collapse under extreme spatiotemporal stress. Although we did not find evidence of evolutionary effects of top-down facilitation, the methodology proposed here represents a contribution to test the conditions under which these results hold. Overall, this project illustrates the importance of understanding the multiple drivers that determine the outcome of biotic interactions.
Book Synopsis Trait-based Understanding of Plant Species Distributions Along Environmental Gradients by : Kolja Bergholz
Download or read book Trait-based Understanding of Plant Species Distributions Along Environmental Gradients written by Kolja Bergholz and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: For more than two centuries, plant ecologists have aimed to understand how environmental gradients and biotic interactions shape the distribution and co-occurrence of plant species. In recent years, functional trait-based approaches have been increasingly used to predict patterns of species co-occurrence and species distributions along environmental gradients (trait-environment relationships). Functional traits are measurable properties at the individual level that correlate well with important processes. Thus, they allow us to identify general patterns by synthesizing studies across specific taxonomic compositions, thereby fostering our understanding of the underlying processes of species assembly. However, the importance of specific processes have been shown to be highly dependent on the spatial scale under consideration. In particular, it remains uncertain which mechanisms drive species assembly and allow for plant species coexistence at smaller, more local spatial scales. [...].
Download or read book Herbivory written by Michael J. Crawley and published by . This book was released on 1983 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Functional Plant Ecology by : Francisco Pugnaire
Download or read book Functional Plant Ecology written by Francisco Pugnaire and published by CRC Press. This book was released on 2007-06-20 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt: Following in the footsteps of the successful first edition, Functional Plant Ecology, Second Edition remains the most authoritative resource in this multidisciplinary field. Extensively revised and updated, this book investigates plant structure and behavior across the ecological spectrum. It features the ecology and evolution of plant crowns and a
Download or read book Plant Invasions written by Anna Traveset and published by CABI. This book was released on 2020-11-20 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are many books on aspects of plant invasions, but none that focus on the key role of species interactions in mediating invasions. This book reviews exciting new findings and explores how new methods and tools are shedding new light on crucial processes in plant invasions. This book will be of interest to academics and students of ecology, researchers engaged in developing management solutions, scientific managers of natural ecosystems, and policy-makers.
Book Synopsis Vegetation Index and Dynamics by : Eusebio Cano Carmona
Download or read book Vegetation Index and Dynamics written by Eusebio Cano Carmona and published by BoD – Books on Demand. This book was released on 2022-02-23 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book contemplates different ways of approaching the study of vegetation as well as the type of indices to be used. However, all the works pursue the same objective: to know and interpret nature from different points of view, either through knowledge of nature in situ or the use of technology and mapping using satellite images. Chapters analyze the ecological parameters that affect vegetation, the species that make up plant communities, and the influence of humans on vegetation.
Book Synopsis Plant Diversity and Biomass Dynamics under Environmental Variation by : Arshad Ali
Download or read book Plant Diversity and Biomass Dynamics under Environmental Variation written by Arshad Ali and published by Frontiers Media SA. This book was released on 2023-04-25 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Nature of Plant Communities by : J. Bastow Wilson
Download or read book The Nature of Plant Communities written by J. Bastow Wilson and published by Cambridge University Press. This book was released on 2019-03-21 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a comprehensive review of the role of species interactions in the process of plant community assembly.
Download or read book Root Ecology written by Hans de Kroon and published by Springer Science & Business Media. This book was released on 2003-05-21 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the course of evolution, a great variety of root systems have learned to overcome the many physical, biochemical and biological problems brought about by soil. This development has made them a fascinating object of scientific study. This volume gives an overview of how roots have adapted to the soil environment and which roles they play in the soil ecosystem. The text describes the form and function of roots, their temporal and spatial distribution, and their turnover rate in various ecosystems. Subsequently, a physiological background is provided for basic functions, such as carbon acquisition, water and solute movement, and for their responses to three major abiotic stresses, i.e. hard soil structure, drought and flooding. The volume concludes with the interactions of roots with other organisms of the complex soil ecosystem, including symbiosis, competition, and the function of roots as a food source.
