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Author: Publisher: ISBN: Category : Electronic books Languages : en Pages : 33
Book Description
The forest-forming giant kelp, Macrocystis pyrifera, and the communities it supports have been decreasing across their native ranges in many parts of the world. The sudden removal of giant kelp canopies by storms enhances space and light for the colonization ofopportunistic understory macroalgae, such as Desmarestia herbacea, which can inhibit M. pyrifera recovery and alter local community composition. Understanding the mechanisms by which D. herbacea interacts with M. pyrifera can therefore provide insight into patterns of kelp forest recovery following these disturbances, and can aid in predicting future community structure. This study experimentally tested the independent and combined effects of two likely competitive mechanisms, namely shade and scour, by which D. herbacea might inhibit recovery of M. pyrifera in the Point Loma kelp forest in San Diego, CA. We conducted field experiments on SCUBA to study the individual and combined effects of shade and scour by D. herbacea on the survival of M. pyrifera microscopic life stages, and the recruitment, survival and growth of its young sporophytes. Our results show that scour (i.e. physical abrasion by D. herbacea thalli) had the strongest effect on the survival of M. pyrifera microscopic life stages and recruitment of its young sporophytes, but shade and scour were both important for survival and growth of these sporophytes as they grew larger. Canopy-removing storms are increasing in frequency and intensity, and this change could facilitate the rise of opportunistic species, like D. herbacea, which might alter community succession and recovery of kelp forests. Understanding the mechanisms by which these opportunistic species suppress kelp recovery can therefore enhance conservation efforts.
Author: Publisher: ISBN: Category : Electronic books Languages : en Pages : 33
Book Description
The forest-forming giant kelp, Macrocystis pyrifera, and the communities it supports have been decreasing across their native ranges in many parts of the world. The sudden removal of giant kelp canopies by storms enhances space and light for the colonization ofopportunistic understory macroalgae, such as Desmarestia herbacea, which can inhibit M. pyrifera recovery and alter local community composition. Understanding the mechanisms by which D. herbacea interacts with M. pyrifera can therefore provide insight into patterns of kelp forest recovery following these disturbances, and can aid in predicting future community structure. This study experimentally tested the independent and combined effects of two likely competitive mechanisms, namely shade and scour, by which D. herbacea might inhibit recovery of M. pyrifera in the Point Loma kelp forest in San Diego, CA. We conducted field experiments on SCUBA to study the individual and combined effects of shade and scour by D. herbacea on the survival of M. pyrifera microscopic life stages, and the recruitment, survival and growth of its young sporophytes. Our results show that scour (i.e. physical abrasion by D. herbacea thalli) had the strongest effect on the survival of M. pyrifera microscopic life stages and recruitment of its young sporophytes, but shade and scour were both important for survival and growth of these sporophytes as they grew larger. Canopy-removing storms are increasing in frequency and intensity, and this change could facilitate the rise of opportunistic species, like D. herbacea, which might alter community succession and recovery of kelp forests. Understanding the mechanisms by which these opportunistic species suppress kelp recovery can therefore enhance conservation efforts.
Author: Publisher: Academic Press ISBN: 0128096179 Category : Science Languages : en Pages : 346
Book Description
Host-Microbe Interactions, the latest volume in the Progress in Molecular Biology series, provides a forum for the discussion of new discoveries, approaches, and ideas in molecular biology. It contains contributions from leaders in their respective fields, along with abundant references. This volume is dedicated to the subject of host-microbe interactions. - Provides the latest research on host-microbe interactions, including new discoveries, approaches, and ideas - Contains contributions from leading authorities on topics relating to molecular biology - Informs and updates on all the latest developments in the field
Author: Publisher: Academic Press ISBN: 0080526942 Category : Science Languages : en Pages : 781
Book Description
Algae are an important component of aquatic benthic ecosystems because they reflect the health of their environment through their density, abundance, and diversity. This comprehensive and authoritative text is divided into three sections to offer complete coverage of the discussion in this field. The first section introduces the locations of benthic algae in different ecosystems, like streams, large rivers, lakes, and other aquatic habitats. The second section is devoted to the various factors, both biotic and abiotic, that affect benthic freshwater algae. The final section of the book focuses on the role played by algae in a variety of complex freshwater ecosystems. As concern over environmental health escalates, the keystone and pivotal role played by algae is becoming more apparent. This volume in the Aquatic Ecology Series represents an important compilation of the latest research on the crucial niche occupied by algae in aquatic ecosystems. - Presents algae as the important player in relation to environmental health - Prepared by leading authorities in the field - Includes comprehensive treatment of the functions of benthic algae as well as the factors that affect these important aquatic organisms - Acts as an important reference for anyone interested in understanding and managing freshwater ecosystems
Author: Reinhard Renneberg Publisher: Academic Press ISBN: 0323855709 Category : Science Languages : en Pages : 476
Book Description
Biotechnology for Beginners, Third Edition presents the latest developments in the evolving field of biotechnology which has grown to such an extent over the past few years that increasing numbers of professional's work in areas that are directly impacted by the science. This book offers an exciting and colorful overview of biotechnology for professionals and students in a wide array of the life sciences, including genetics, immunology, biochemistry, agronomy and animal science. This book will also appeals to lay readers who do not have a scientific background but are interested in an entertaining and informative introduction to the key aspects of biotechnology. Authors Renneberg and Loroch discuss the opportunities and risks of individual technologies and provide historical data in easy-to-reference boxes, highlighting key topics. The book covers all major aspects of the field, from food biotechnology to enzymes, genetic engineering, viruses, antibodies, and vaccines, to environmental biotechnology, transgenic animals, analytical biotechnology, and the human genome. - Covers the whole of biotechnology - Presents an extremely accessible style, including lavish and humorous illustrations throughout - Includes new chapters on CRISPR cas-9, COVID-19, the biotechnology of cancer, and more
Author: D. Raffaelli Publisher: Springer Science & Business Media ISBN: 940091489X Category : Science Languages : en Pages : 367
Book Description
The seashore has long been the subject of fascination and study - the Ancient Greek scholar Aristotle made observations and wrote about Mediterranean sea urchins. The considerable knowledge of what to eat and where it could be found has been passed down since prehistoric times by oral tradition in many societies - in Britain it is still unwise to eat shellfish in months without an 'r' in them. Over the last three hundred years or so we have seen the formalization of science and this of course has touched intertidal ecology. Linnaeus classified specimens collected from the seashore and many common species (Patella vulgata L. , Mytilus edulis L. , Littorina littorea (L. )) bear his imprint because he formally described, named and catalogued them. Early natural historians described zonation patterns in the first part of the 19th century (Audouin and Milne-Edwards, 1832), and the Victorians became avid admirers and collectors of shore animals and plants with the advent of the new fashion of seaside holidays (Gosse, 1856; Kingsley, 1856). As science became professionalized towards the end of the century, marine biologists took advantage of low tides to gain easy access to marine life for taxonomic work and classical studies of functional morphology. The first serious studies of the ecology of the shore were made at this time (e. g.
Author: Robert J. Anderson Publisher: Springer ISBN: 9781402056697 Category : Science Languages : en Pages : 471
Book Description
This book contains the proceedings of the 18th International Seaweed Symposium, which provides an invaluable reference to a wide range of fields in applied phycology. The papers featured in this volume cover topics as diverse as systematics, ecology, commercial applications, carbohydrate chemistry and applications, harvesting biology, cultivation and more. It offers a benchmark of progress in all fields of applied seaweed science and management.
Author: James B. Grace Publisher: Cambridge University Press ISBN: 1139457845 Category : Nature Languages : en Pages : 26
Book Description
This book, first published in 2006, presents an introduction to the methodology of structural equation modeling, illustrates its use, and goes on to argue that it has revolutionary implications for the study of natural systems. A major theme of this book is that we have, up to this point, attempted to study systems primarily using methods (such as the univariate model) that were designed only for considering individual processes. Understanding systems requires the capacity to examine simultaneous influences and responses. Structural equation modeling (SEM) has such capabilities. It also possesses many other traits that add strength to its utility as a means of making scientific progress. In light of the capabilities of SEM, it can be argued that much of ecological theory is currently locked in an immature state that impairs its relevance. It is further argued that the principles of SEM are capable of leading to the development and evaluation of multivariate theories of the sort vitally needed for the conservation of natural systems.
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Author: Stephanie K. Clendennen
Author: Michael S. Foster
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Author: Reinhard Renneberg
Author: D. Raffaelli
Author: D. A. Birkett
Author: Robert J. Anderson
Author: James B. Grace