Download or read book Predator Prey Interactions Across Vegetation Gradients written by Karen Alice Wilson and published by . This book was released on 1996 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology of Predator Prey Interactions written by Pedro Barbosa and published by Oxford University Press. This book was released on 2005-08-11 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the fundamental issues of predator-prey interactions, with an emphasis on predation among arthropods, which have been better studied, and for which the database is more extensive than for the large and rare vertebrate predators. The book should appeal to ecologists interested in the broad issue of predation effects on communities.
Download or read book Ecology of Predator Prey Interactions written by Pedro Barbosa and published by Oxford University Press. This book was released on 2005-08-11 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the fundamental issues of predator-prey interactions, with an emphasis on predation among arthropods, which have been better studied, and for which the database is more extensive than for the large and rare vertebrate predators. The book should appeal to ecologists interested in the broad issue of predation effects on communities.
Download or read book Persisting in the Pelagic written by Adam Garner Hansen and published by . This book was released on 2013 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: Persisting in the pelagic is not easy. The physical environment of pelagic ecosystems is highly dynamic. Unlike terrestrial systems where habitat complexity is driven by physical structure (e.g., vegetation and terrain), habitat complexity in the pelagic is driven by vertical gradients in light, turbidity, temperature, and oxygen. All of these factors change over time, and can mediate predator-prey interactions given ontogenetic or asymmetric responses of predators and prey to diel and seasonal changes in these factors. Additionally, pelagic predators and prey rely primarily on vision for feeding. Therefore, changes in photic conditions (light and turbidity) in particular can have a strong impact on the structure of predator-prey interactions. Yet, it remains unclear how habitat heterogeneity over different dimensions of time and space interacts with perception, behavior, and physiological tolerance to mediate the foraging success of predators and predation risk for prey in pelagic ecosystems. Pelagic environments are not static. They will change given continued human-induced alterations to the landscape, shifts in climate, and unanticipated introductions of nonnative predators and prey. Knowing how the pelagic foraging-risk environment changes in response to shifts in physical habitat over many different temporal-spatial scales should improve predictions regarding how aquatic food webs will respond to different perturbations. For my dissertation I addressed the following series of questions: 1) how do light and turbidity effect the visual prey detection responses of pelagic planktivores and piscivores, and do the consumer groups differ?, 2) how does natural variation in photic conditions (diel and seasonal light regimes at different latitudes and turbidity) shape the foraging-risk environment for visually-feeding planktivores and piscivores in pelagic ecosystems?, 3) in addition to photic conditions, how do seasonal shifts in the thermal environment shape the foraging-risk environment for pelagic planktivores and piscivores?, and 4) do fluctuations in the abundance, distribution, visual detectability, and vulnerability to predation of different prey groups alter the diet selection of piscivores and relative predation risk for planktivores in diverse pelagic communities? To address the first question, I conducted a series of controlled laboratory experiments and measured light- and turbidity-dependent reaction distances by piscivores. To address the remaining questions, I linked individual-based, mechanistic models (visual foraging and bioenergetics models) that capture important fine-scale behavioral and physiological processes with empirical data on physical habitat, predator diet, movement, and distribution (from netting, ultrasonic telemetry, and hydroacoustics) to estimate changes in feeding rates for piscivores and planktivores and predation risk for planktivores over time and space. First, reaction distance responded asymptotically with increasing light, but declined quickly with increasing turbidity for both planktivores and piscivores. The maximum reaction distance for piscivores was 5-6 fold greater than for planktivores, but planktivores achieved their maximum reaction distance at a much lower light level, and the decline in reaction distance with turbidity was much steeper for piscivores. Second, based on these asymmetric visual prey detection responses, the foraging-risk environment for pelagic planktivores and piscivores changed considerably in systematic ways with changes in diel patterns of illuminance along a broad latitudinal gradient and to increases in turbidity. These changes have different implications for the structure of pelagic predator-prey interactions over a broad latitudinal gradient. Third, like shifts in photic conditions, seasonal shifts in the thermal environment also mediated the foraging success of piscivores and predation risk for planktivores. Here, periods of environmental stress (i.e., high temperature and low dissolved oxygen) greatly reduced both the foraging success of piscivores and predation risk for planktivores by creating thermal refugia for the planktivores. Lastly, the nature of the feeding selectivity (random or opportunistic versus non-random or targeted) of visually-oriented piscivores was highly dependent on fluctuations in the abundance and susceptibility of key prey to visual detection and capture. Results suggested that pelagic piscivores are flexible predators, and can adapt their feeding behavior to take advantage of large influxes of highly catchable prey. Overall, by observing through the eyes of pelagic predators and prey, my results show that the foraging-risk environment for piscivores and planktivores can look very different as physical habitat changes over many different dimensions of time and space.
Download or read book Biodiversity across Afromontane Environments written by David Horák and published by Frontiers Media SA. This book was released on 2023-02-13 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mathematical Models of Plant Herbivore Interactions written by Zhilan Feng and published by CRC Press. This book was released on 2017-09-07 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mathematical Models of Plant-Herbivore Interactions addresses mathematical models in the study of practical questions in ecology, particularly factors that affect herbivory, including plant defense, herbivore natural enemies, and adaptive herbivory, as well as the effects of these on plant community dynamics. The result of extensive research on the use of mathematical modeling to investigate the effects of plant defenses on plant-herbivore dynamics, this book describes a toxin-determined functional response model (TDFRM) that helps explains field observations of these interactions. This book is intended for graduate students and researchers interested in mathematical biology and ecology.
Download or read book Plant fungal interactions written by Dong-Qin Dai and published by Frontiers Media SA. This book was released on 2023-08-16 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Concepts and Controversies in Tidal Marsh Ecology written by M.P. Weinstein and published by Springer Science & Business Media. This book was released on 2007-05-08 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1968 when I forsook horticulture and plant physiology to try, with the help of Sea Grant funds, wetland ecology, it didn’t take long to discover a slim volume published in 1959 by the University of Georgia and edited by R. A. Ragotzkie, L. R. Pomeroy, J. M. Teal, and D. C. Scott, entitled “Proceedings of the Salt Marsh Conference” held in 1958 at the Marine Institute, Sapelo Island, Ga. Now forty years later, the Sapelo Island conference has been the major intellectual impetus, and another Sea Grant Program the major backer, of another symposium, the “International Symposium: Concepts and Controversies in Tidal Marsh Ecology”. This one re-examines the ideas of that first conference, ideas that stimulated four decades of research and led to major legislation in the United States to conserve coastal wetlands. It is dedicated, appropriately, to two then young scientists – Eugene P. Odum and John M. Teal – whose inspiration has been the starting place for a generation of coastal wetland and estuarine research. I do not mean to suggest that wetland research started at Sapelo Island. In 1899 H. C. Cowles described successional processes in Lake Michigan freshwater marsh ponds. There is a large and valuable early literature about northern bogs, most of it from Europe and the former USSR, although Eville Gorham and R. L. Lindeman made significant contributions to the American literature before 1960. V. J.
Download or read book Multitrophic Interactions in Terrestrial Systems written by A. C. Gange and published by Cambridge University Press. This book was released on 2002-08 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multitrophic interactions are now recognised as being of the utmost importance in understanding the complexity of the natural world. However, their complex nature had often been a barrier to their study as they require research teams composed of workers often with very disparate interests. This book therefore takes a multidisciplinary approach to complex interactions across many trophic levels and includes authors from disciplines as diverse as mycology, entomology, nematology, population ecology and theoretical ecology. Throughout, the direct and indirect interactions between organisms from different trophic levels are emphasised in comprehensive reviews, bringing a fresh, collaborative approach to community ecology. The book is ideal for those seeking an overview of our understanding of mulittrophic interactions as well as directions for future research.
Download or read book Global Change in Multispecies Systems Part I written by Guy Woodward and published by Academic Press. This book was released on 2012-11-29 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Ecological Research is one of the most successful series in the highly competitive field of ecology. Each volume publishes topical and important reviews, interpreting ecology as widely as in the past, to include all material that contributes to our understanding of the field. Topics in this invaluable series include the physiology, populations, and communities of plants and animals, as well as landscape and ecosystem ecology. Advances in Ecological Research is one of the most successful series in the highly competitive field of ecology Each volume publishes topical and important reviews, interpreting ecology as widely as in the past, to include all material that contributes to our understanding of the field
Download or read book Bulletin of the Ecological Society of America written by Ecological Society of America and published by . This book was released on 1985 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Flower Metabolism and Pollinators written by Monica Borghi and published by Frontiers Media SA. This book was released on 2021-12-01 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Population Ecology in Practice written by Dennis L. Murray and published by John Wiley & Sons. This book was released on 2020-02-10 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: A synthesis of contemporary analytical and modeling approaches in population ecology The book provides an overview of the key analytical approaches that are currently used in demographic, genetic, and spatial analyses in population ecology. The chapters present current problems, introduce advances in analytical methods and models, and demonstrate the applications of quantitative methods to ecological data. The book covers new tools for designing robust field studies; estimation of abundance and demographic rates; matrix population models and analyses of population dynamics; and current approaches for genetic and spatial analysis. Each chapter is illustrated by empirical examples based on real datasets, with a companion website that offers online exercises and examples of computer code in the R statistical software platform. Fills a niche for a book that emphasizes applied aspects of population analysis Covers many of the current methods being used to analyse population dynamics and structure Illustrates the application of specific analytical methods through worked examples based on real datasets Offers readers the opportunity to work through examples or adapt the routines to their own datasets using computer code in the R statistical platform Population Ecology in Practice is an excellent book for upper-level undergraduate and graduate students taking courses in population ecology or ecological statistics, as well as established researchers needing a desktop reference for contemporary methods used to develop robust population assessments.
Download or read book Community Ecology written by Gary G. Mittelbach and published by Oxford University Press. This book was released on 2019-05-24 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Community ecology has undergone a transformation in recent years, from a discipline largely focused on processes occurring within a local area to a discipline encompassing a much richer domain of study, including the linkages between communities separated in space (metacommunity dynamics), niche and neutral theory, the interplay between ecology and evolution (eco-evolutionary dynamics), and the influence of historical and regional processes in shaping patterns of biodiversity. To fully understand these new developments, however, students continue to need a strong foundation in the study of species interactions and how these interactions are assembled into food webs and other ecological networks. This new edition fulfils the book's original aims, both as a much-needed up-to-date and accessible introduction to modern community ecology, and in identifying the important questions that are yet to be answered. This research-driven textbook introduces state-of-the-art community ecology to a new generation of students, adopting reasoned and balanced perspectives on as-yet-unresolved issues. Community Ecology is suitable for advanced undergraduates, graduate students, and researchers seeking a broad, up-to-date coverage of ecological concepts at the community level.
Download or read book Flammable Australia written by Richard J Williams and published by CSIRO PUBLISHING. This book was released on 2012-02-21 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Flammable Australia: Fire Regimes, Biodiversity and Ecosystems in a Changing World, leading researchers in fire ecology and management discuss how fire regimes have shaped and will continue to shape the distribution and abundance of Australia’s highly diverse plants and animals. Central to this is the exploration of the concept of the fire regime – the cumulative pattern of fires and their individual characteristics (fire type, frequency, intensity, season) and how variation in regime components affects landscapes and their constituent biota. Contributions by 44 authors explore a wide range of topics including classical themes such as pre-history and evolution, fire behaviour, fire regimes in key biomes, plant and animal life cycles, remote sensing and modelling of fire regimes, and emerging issues such as climate change and fire regimes, carbon dynamics and opportunities for managing fire regimes for multiple benefits. In the face of significant global change, the conservation of our native species and ecosystems requires an understanding of the processes at play when fires and landscapes interact. This book provides a comprehensive treatment of this complex science, in the context of one of the world’s most flammable continents.
Download or read book Encyclopedia of Ecology written by Brian D. Fath and published by Elsevier. This book was released on 2018-08-23 with total page 2786 pages. Available in PDF, EPUB and Kindle. Book excerpt: Encyclopedia of Ecology, Second Edition, Four Volume Set continues the acclaimed work of the previous edition published in 2008. It covers all scales of biological organization, from organisms, to populations, to communities and ecosystems. Laboratory, field, simulation modelling, and theoretical approaches are presented to show how living systems sustain structure and function in space and time. New areas of focus include micro- and macro scales, molecular and genetic ecology, and global ecology (e.g., climate change, earth transformations, ecosystem services, and the food-water-energy nexus) are included. In addition, new, international experts in ecology contribute on a variety of topics. Offers the most broad-ranging and comprehensive resource available in the field of ecology Provides foundational content and suggests further reading Incorporates the expertise of over 500 outstanding investigators in the field of ecology, including top young scientists with both research and teaching experience Includes multimedia resources, such as an Interactive Map Viewer and links to a CSDMS (Community Surface Dynamics Modeling System), an open-source platform for modelers to share and link models dealing with earth system processes
Download or read book Conservation Biology Principles for Forested Landscapes written by Joan Voller and published by UBC Press. This book was released on 1998 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended to provide information to those who wish tointeract with the landbase in an ecologically sustainable manner.Practitioners charged with the administration of land-based programs inindustry and government will find the information presented useful. Itshould also be a resource for many community groups involved inland-use decision-making. Humans continue to use forests and make decisions about land usewithout perfect information. Conservation Biology Principles forForested Landscapes is intended to enable the improvement ofplanning and decison-making processes by providing ecologicalinformation on issues of forest use. Current approaches are notworking. Where information exists on new, ecologically sustainableapproaches, practitioners should switch. Where the information on abetter approach is not yet available, practitioners should replace thecurrent, inappropriate approach with a variety of flexible ones thatoffer the opportunity to change with new knowledge.
