Download or read book Experimental Analysis of Spatial Relationships in Food webs During Community Assembly written by Denise Ann Piechnik and published by . This book was released on 2007 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Understanding Community and Food Web Dynamics in the Moss microarthropod Model Ecological System Temporal Variability and Combined Experimental Habitat Fragmentation and Climate Change written by Giselle Denisse Perdomo Martínez and published by . This book was released on 2012 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a clear crisis in the maintenance of global biodiversity worldwide. Climate change and widespread habitat loss, degradation and fragmentation are exerting strong, landscape-scale pressures on biodiversity. Negative impacts of these stressors are seen at all levels of biological organization, but studies at the level of community and food webs are relatively rare. This is in large part due to the large spatial and temporal scales at which food webs operate. Natural microcosms (food webs operating at small spatial scales) have been used to experimentally approach complex theoretical and applied questions in ecology, and have provided many important insights to date. In particular, moss micro-arthropod communities have been used extensively for the study of the effects of habitat fragmentation. Here, we used this ecosystem in a replicated, manipulative experiment to study the combined effects of warming and habitat fragmentation on community and food web structure. In order to do this, we developed tools to estimate diet of Oribatid mites, which were one of the most abundant and diverse taxa in the food web. Stable isotope techniques and analysis of mouthpart morphology allowed us to describe a food web for a moss-microarthropod ecosystem from south eastern Australia. The food web comprised over 100 taxa organized into a suite of feeding guilds: herbivores, fungivores, detritivores, lichenivores and predators. The speciose nature of the system is a strength, and the challenge of dealing with the taxonomy, data storage and food web analysis was met by development of a publicly available taxonomy database/tool, and a food web analysis package. We described temporal variation in a suite of food web attributes across one summer and winter. We found marked differences in food web structure between sampling occasions, with patterns suggestive of temperature- and humidity-driven changes in resource availability. To test the generality of food web structure in our system as compared to other ecosystems, food web attributes were compared to those of a large compilation of food webs from around the world. Comparison revealed similarities in food web structure to other communities across a range of spatial scales and ecosystems. Dissimilarities were also found and discussed. We concluded that the moss-microarthropod system provides an adequate model for achieving a deeper understanding of processes in community ecology. Our experiments assess the assembly of moss-microarthropod communities after an extreme high-temperature event, against a back-drop of altered climate, and in the context of habitat fragmentation. Data provide initial indications that isolated habitats may be more susceptible to negative impacts of warming than less isolated habitats. Variability of responses among replicate landscapes was considerable, with some being relatively resilient. Future understanding of the underpinnings of this resilience could point to management options for resisting rapid environmental change. Our results highlight the value of dispersal in disturbed landscapes and of disturbance-buffered communities in the face of climate change. Given the importance of synergies between disturbances as drivers of biodiversity loss, and considering the paucity of data assessing the combined impacts of climate change and habitat fragmentation on food webs, further research must be carried out in this area. This could build and draw on the model system we have validated for that purpose, enabled by the suite of new tools generated here.
Download or read book Food Webs written by Gary A. Polis and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reflecting the recent surge of activity in food web research fueled by new empirical data, this authoritative volume successfully spans and integrates the areas of theory, basic empirical research, applications, and resource problems. Written by recognized leaders from various branches of ecological research, this work provides an in-depth treatment of the most recent advances in the field and examines the complexity and variability of food webs through reviews, new research, and syntheses of the major issues in food web research. Food Webs features material on the role of nutrients, detritus and microbes in food webs, indirect effects in food webs, the interaction of productivity and consumption, linking cause and effect in food webs, temporal and spatial scales of food web dynamics, applications of food webs to pest management, fisheries, and ecosystem stress. Three comprehensive chapters synthesize important information on the role of indirect effects, productivity and consumer regulation, and temporal, spatial and life history influences on food webs. In addition, numerous tables, figures, and mathematical equations found nowhere else in related literature are presented in this outstanding work. Food Webs offers researchers and graduate students in various branches of ecology an extensive examination of the subject. Ecologists interested in food webs or community ecology will also find this book an invaluable tool for understanding the current state of knowledge of food web research.
Download or read book Food Webs written by John C. Moore and published by Cambridge University Press. This book was released on 2018 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents new approaches to studying food webs, using practical and policy examples to demonstrate the theory behind ecosystem management decisions.
Download or read book Aquatic Food Webs written by Andrea Belgrano and published by Oxford University Press, USA. This book was released on 2005 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'Aquatic Food Webs' provides a current synthesis of theoretical and empirical food web research. The textbook is suitable for graduate level students as well as professional researchers in community, ecosystem, and theoretical ecology, in aquatic ecology, and in conservation biology.
Download or read book Advances in Ecological Research written by and published by Academic Press. This book was released on 1993-06-10 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: The six articles in this issue of Advances in Ecological Research cover a wide spectrum of ecology to ecology to munities, the discussion of vegetation change on a longer time scale, and the significance of conservation, especially in the industrialized world. S.J. Hall and D.G. Raff provide something of interest to all ecologists. Several common themes are presented in this volume including the dynamics of communities with such examples as Glacier Bat and Mount St.Helens. * SPECIAL FEATURES: * Lively selection of review on topical subjects.
Download or read book Food Webs at the Landscape Level written by Gary A. Polis and published by University of Chicago Press. This book was released on 2004-02-22 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: Paying special attention to the fertile boundaries between terrestrial, freshwater, and marine ecosystems, this work shows not only what this new methodology means for ecology, conservation, and agriculture but also serves as a fitting tribute to Gary Polis and his major contributions to the field
Download or read book Community Ecology written by Herman A. Verhoef and published by Oxford University Press. This book was released on 2010 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: Community ecology is the study of the interactions between populations of co-existing species. Co-edited by two prominent community ecologists and featuring contributions from top researchers in the field, this book provides a survey of the state-of-the-art in both the theory and applications of the discipline. It pays special attention to topology, dynamics, and the importance of spatial and temporal scale while also looking at applications to emerging problems in human-dominated ecosystems (including the restoration and reconstruction of viable communities). Community Ecology: Processes, Models, and Applications adopts a mainly theoretical approach and focuses on the use of network-based theory, which remains little explored in standard community ecology textbooks. The book includes discussion of the effects of biotic invasions on natural communities; the linking of ecological network structure to empirically measured community properties and dynamics; the effects of evolution on community patterns and processes; and the integration of fundamental interactions into ecological networks. A final chapter indicates future research directions for the discipline.
Download or read book Mechanisms Underlying the Relationship Between Biodiversity and Ecosystem Function written by and published by Academic Press. This book was released on 2019-10-12 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Ecological Research, Volume 61, the latest release in this ongoing series includes specific chapters on the Mechanistic links between biodiversity and ecosystem function, A multitrophic, eco-evolutionary perspective on biodiversity–ecosystem functioning research, Linking species coexistence to ecosystem functioning - a conceptual framework from ecological first principles, Species contributions to above and below ground biodiversity effects in the Trait-Based Experiment, Plant diversity effects on element cycling, Plant diversity effects on consumer community structure, stability, and ecosystem function, Plant community assembly and the consequences for ecosystem function, and more. Provides information that relates to a thorough understanding of the field of ecology Deals with topical and important reviews on the physiologies, populations and communities of plants and animals
Download or read book Ecological Networks written by Mercedes Pascual and published by Oxford University Press. This book was released on 2006 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: Food webs are one of the most useful, and challenging, objects of study in ecology. These networks of predator-prey interactions, conjured in Darwin's image of a "tangled bank," provide a paradigmatic example of complex adaptive systems. This book is based on a February 2004 Santa Fe Institute workshop. Its authors treat the ecology of predator-prey interactions, food web theory, structure and dynamics. The book explores the boundaries of what is known of the relationship between structure and dynamics in ecological networks and will define directions for future developments in this field.
Download or read book Dynamic Food Webs written by Peter C de Ruiter and published by Elsevier. This book was released on 2005-12-20 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamic Food Webs challenges us to rethink what factors may determine ecological and evolutionary pathways of food web development. It touches upon the intriguing idea that trophic interactions drive patterns and dynamics at different levels of biological organization: dynamics in species composition, dynamics in population life-history parameters and abundances, and dynamics in individual growth, size and behavior. These dynamics are shown to be strongly interrelated governing food web structure and stability and the role of populations and communities play in ecosystem functioning. Dynamic Food Webs not only offers over 100 illustrations, but also contains 8 riveting sections devoted to an understanding of how to manage the effects of environmental change, the protection of biological diversity and the sustainable use of natural resources. Dynamic Food Webs is a volume in the Theoretical Ecology series. Relates dynamics on different levels of biological organization: individuals, populations, and communities Deals with empirical and theoretical approaches Discusses the role of community food webs in ecosystem functioning Proposes methods to assess the effects of environmental change on the structure of biological communities and ecosystem functioning Offers an analyses of the relationship between complexity and stability in food webs
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 Invading Ecological Networks written by Cang Hui and published by Cambridge University Press. This book was released on 2022-01-13 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proposes new ways of managing ecological invasions by implementing an open adaptive network framework for ecosystem transformation.
Download or read book Ecology Abstracts written by and published by . This book was released on 1999 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coverage: 1982- current; updated: monthly. This database covers current ecology research across a wide range of disciplines, reflecting recent advances in light of growing evidence regarding global environmental change and destruction. Major ares of subject coverage include: Algae/lichens, Animals, Annelids, Aquatic ecosystems, Arachnids, Arid zones, Birds, Brackish water, Bryophytes/pteridophytes, Coastal ecosystems, Conifers, Conservation, Control, Crustaceans, Ecosyst em studies, Fungi, Grasses, Grasslands, High altitude environments, Human ecology, Insects, Legumes, Mammals, Management, Microorganisms, Molluscs, Nematodes, Paleo-ecology, Plants, Pollution studies, Reptiles, River basins, Soil, TAiga/tundra, Terrestrial ecosystems, Vertebrates, Wetlands, Woodlands.
Download or read book Biodiversity and Ecosystem Functioning written by Michel Loreau and published by Oxford University Press, USA. This book was released on 2002 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increasing domination of ecosystems by humans is steadily transforming them into depauperate systems. How will this loss of biodiversity affect the functioning and stability of natural and managed ecosystems? This work provides comprehensive coverage of empirical and theoretical research.
Download or read book Changing Plankton Communities Causes Effects and Consequences written by Kristian Spilling and published by Frontiers Media SA. This book was released on 2019-10-04 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine ecosystems are changing at an unprecedented rate. In addition to the direct effects of e.g. warming surface temperatures, the environmental changes also cause shifts in plankton communities. Plankton makes up the base of the marine food web and plays a pivotal role in global biogeochemical cycles. Any shifts in the plankton community composition could have drastic consequences for marine ecosystem functioning. This Research Topic focuses on causes, effects and consequences of such shifts in the plankton community structure.
Download or read book Theories Methods and Practices of Wetland Degradation and Restoration written by Zhenguo Niu and published by Frontiers Media SA. This book was released on 2023-07-07 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt:
