Mosaic Distribution Of Chemical Defenses In A High Intertidal Alga
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Mosaic Distribution Of Chemical Defenses In A High Intertidal Alga
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Author : Nathan B. Eckrich
language : en
Publisher:
Release Date : 1997
Mosaic Distribution Of Chemical Defenses In A High Intertidal Alga written by Nathan B. Eckrich and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.
Ecology Of Chemical Defenses Of Algae Against The Herbivorous Snail Littorina Littorea In The New England Rocky Intertidal Community
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Author : Joy Ann Geiselman
language : en
Publisher:
Release Date : 1980
Ecology Of Chemical Defenses Of Algae Against The Herbivorous Snail Littorina Littorea In The New England Rocky Intertidal Community written by Joy Ann Geiselman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Gastropoda categories.
Ecology Of Chemical Defenses Of Algae Against The Herbivorous Snail Littorina Littorea In The New England Intertidal Community
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Author :
language : en
Publisher:
Release Date : 1980
Ecology Of Chemical Defenses Of Algae Against The Herbivorous Snail Littorina Littorea In The New England Intertidal Community written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with categories.
Handbook Of Phycological Methods Volume 4
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Author : Phycological Society of America
language : en
Publisher: Cambridge University Press
Release Date : 1973
Handbook Of Phycological Methods Volume 4 written by Phycological Society of America and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Medical categories.
A comprehensive treatment of methodologies in the rapidly advancing field of marine benthic algal ecology.
Ecology Of Chemical Defenses Of Algae Against The Herbivorous Snail Littorina Littorea In The New England Rocky Intertidal Community
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Author :
language : en
Publisher:
Release Date : 1902
Ecology Of Chemical Defenses Of Algae Against The Herbivorous Snail Littorina Littorea In The New England Rocky Intertidal Community written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1902 with categories.
Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution February 1980.
Freshwater Red Algae Use Activated Chemical Defenses Against Herbivores
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Author : Keri M. Goodman
language : en
Publisher:
Release Date : 2011
Freshwater Red Algae Use Activated Chemical Defenses Against Herbivores written by Keri M. Goodman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Herbivores categories.
Chemically mediated interactions have important ecological and evolutionary effects on populations and communities. Despite recognition that herbivory can significantly affect the biomass and composition of freshwater macrophyte communities, there are few investigations of chemical defenses among freshwater vascular plants and mosses and none of freshwater red algae. This study compares the palatability of five species of freshwater red algae (Batrachospermum helminthosum, Boldia erythrosiphon, Kumanoa sp., Paralemanea annulata, and Tuomeya americana) that occur in the southeastern United States relative to two co-occurring macrophytes (the chemically defended aquatic moss Fontinalis novae-angliae and the broadly palatable green alga Cladophora glomerata). We assessed the potential role of structural, nutritional, and chemical traits in reducing macrophyte susceptibility to generalist crayfish grazers. Both native and non-native crayfish significantly preferred the green alga C. glomerata over four of the five species of red algae. B. erythrosiphon was palatable, while the cartilaginous structure of P. annulata reduced its susceptibility to grazing, and chemical defenses of B. helminthosum, Kumanoa sp., and T. americana rendered these species as unpalatable as the moss F. novae-angliae. Extracts from these latter species reduced feeding by ~30-60% relative to solvent controls if tissues were crushed (simulating herbivore damage) prior to extraction in organic solvents. However, if algae were first soaked in organic solvents that inhibit enzymatic activity and then crushed, crude extracts stimulated or had no effect on herbivory. B. helminthosum, Kumanoa sp., and T. americana all exhibited "activated" chemical defenses in which anti-herbivore compounds are produced rapidly upon herbivore attack via enzymatic processes. In an additional accept/reject behavioral assay, B. helminthosum extracts reduced the number of crayfish willing to feed by>90%. : Given that three of the five red algal taxa examined in this study yielded deterrent crude extracts, selection for defensive chemistry in freshwater rhodophytes appears to be substantial. Activated chemical defenses are thought to be an adaptation to reduce the resource allocation and ecological costs of defense. As such, activated chemical defenses may be favored in freshwater red algae, whose short-lived gametophytes must grow and reproduce rapidly. Roughly 20% of the known chemical defenses produced by marine algae are activated; further examination is needed to determine whether the frequency of activated chemistry is higher in freshwater red algae compared to their marine counterparts. Continued investigation of chemical defenses in freshwater red algae will contribute to among-system comparisons, providing new insights in the generality of plant-herbivore interactions and their evolution.
Algal Chemical Ecology
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Author : Charles D. Amsler
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-11-03
Algal Chemical Ecology written by Charles D. Amsler and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-11-03 with Science categories.
Yet another Springer world-beater, this is the first ever book devoted to the chemical ecology of algae. It covers both marine and freshwater habitats and all types of algae, from seaweeds to phytoplankton. While the book emphasizes the ecological rather than chemical aspects of the field, it does include a unique introductory chapter that serves as a primer on algal natural products chemistry.
Interactions In The Marine Benthos
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Author : Stephen J. Hawkins
language : en
Publisher: Cambridge University Press
Release Date : 2019-08-29
Interactions In The Marine Benthos written by Stephen J. Hawkins and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-08-29 with Nature categories.
A comprehensive account of how abiotic and biotic interactions shape patterns of coastal marine biodiversity and ecosystem processes globally.
Oceanic Abstracts
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Author :
language : en
Publisher:
Release Date : 1996
Oceanic Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Marine biology categories.
Intertidal Ecology
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Author : D. Raffaelli
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Intertidal Ecology written by D. Raffaelli and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
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.