Sponges PDF Download

Author: Patricia R. Bergquist
Publisher: Univ of California Press
ISBN: 9780520036581
Category : Science
Languages : en
Pages : 282

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Author: John N.A. Hooper
Publisher: Springer Science & Business Media
ISBN: 1461507472
Category : Science
Languages : en
Pages : 1779

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Book Description
Research whilst compiling this book has uncovered a fauna about twice the size as that previously published in the literature and consequently Systema Porifera revises and stabilizes the systematics of the phylum to accommodate this new knowledge in a contemporary framework. Practical tools (key illustrations, descriptions of character) are provided to facilitate the assignment of approximately 680 extant and 100 fossil genera. Systema Porifera is unique making sponge taxonomy widely available at the practical level of classification (genera, families, order). It is a taxonomic revision of sponges and spongiomorphis (such as sphinctozoans and archaeocyathans) based on re-evaluation of type materials and evidence. It is also a practical guide to sponge identification providing descriptions and illustrations of characters and interpretation of their importance to systematics. Systema Porifera addresses many long standing nomenclatural problems and provides a sound baseline for future debate on sponges and their place in time and space. Systema Porifera describes 3 classes, 7 subclasses, 24 orders, 127 families and 682 valid genera of extant sponges (with over 1600 nominal generic names and an additional 500 invalid names treated). Treatment of the fossil fauna is less comprehensive or critical, although 6 classes, 30 orders, 245 families and 998 fossil genera are mentioned. Keys to all recent and many fossil taxa are provided.

Author: Werner E. G. Müller
Publisher: Springer Science & Business Media
ISBN: 3642555195
Category : Science
Languages : en
Pages : 273

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Book Description
Sponges (phylum Porifera) are known to be very rich sources for bioactive compounds, mainly secondary metabolites. Main efforts are devoted to cell- and mariculture of sponges to assure a sustainable exploitation of bioactive compounds from biological starting material. These activities are flanked by improved technologies to cultivate bacteria and fungi which are associated with the sponges. It is the hope that by elucidating the strategies of interaction between microorganisms and their host (sponge), by modern cell and molecular biological methods, a more comprehensive cultivation of the symbiotic organisms will be possible. The next step in the transfer of knowledge to biotechnological applications is the isolation, characterization and structural determination of the bioactive compounds by sophisticated chemical approaches.

Author: T.L. Simpson
Publisher: Springer Science & Business Media
ISBN: 1461252148
Category : Science
Languages : en
Pages : 678

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Book Description
Modem biology owes much to the study of favorable model systems which fa cilitates the realization of critical experiments and results in the introduction of new concepts. Examples of such systems are numerous and studies of them are regularly recognized by the scientific community. The 1983 Nobel Prize in Med icine and Physiology is a magnificent example in which com plants served as the experimental model. In a manner somewhat more modest, other biological systems have attracted recognition due to their critical phylogenetic position, or indeed because of their uniqueness which distinguishes them from all other organisms. Assuredly, among the whole assemblage ofliving organisms, sponges stand out as worthy of interest by scientists: they are simultaneously models, an important group in evolution, and animals unlike others. As early as the beginning of this century, sponges appeared as exceptional models for the study of phenomena of cell recognition. Innumerable works have been dedicated to understanding the mechanisms which assure the reaggregation of dissociated cells and the reconstitution of a functional individual. Today, re search on these phenomena is at the ultimate, molecular level. Through an as semblage of characteristics the sponges are, based upon all available evidence, the most primitive Metazoans. Their tissues-perhaps one can say their cell groups-are loosely assembled (they possess no tight or gap junctions), cell dif ferentiation appears highly labile, and they do not develop any true organs. But, they are most certainly Metazoans.

Author:
Publisher: Capstone
ISBN: 9780756516147
Category : Juvenile Nonfiction
Languages : en
Pages : 52

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Book Description
Introduces the physical characteristics and habitats of invertebrates that live in the ocean, including jellyfish, sponges, and anemones.

Author: Grace Bonney
Publisher: Artisan
ISBN: 1579654738
Category : House & Home
Languages : en
Pages : 404

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Book Description
The long-awaited home décor bible by the beloved design blogger “Thank you,” wrote a reader to Design*Sponge creator Grace Bonney, “for teaching me that houses don’t have to be frumpy and formal. They don’t have to be matchy-matchy or rigidly modern.” They can just be comfy and unique and reflect who you are, no matter how small your budget or space. That reader is one of the 75,000 unique daily visitors to Design*Sponge, who make it the most popular design site on the web. The site receives 250,000 pageviews every day and has 150,000 RSS subscribers and 280,000 followers on Twitter. Design*Sponge fans have been yearning for the ultimate design manual from their guru, Grace, and she has finally delivered with this definitive guide, which includes: • Home tours of 70 real-life interiors featuring artists and designers • Fifty DIY projects, with detailed instructions for personalizing your space • Step-by-step tutorials on everything from stripping and painting furniture to hanging wallpaper and doing your own upholstery • Fifty Before & After makeovers submitted by readers of Design*Sponge—real people with limited time and realistic budgets • Essential tips on modern flower arranging, with 20 arrangements With over 700 color photos and illustrations and projects that are customizable, relatable, and affordable, this is the democratizing design book everyone has been waiting for—and all for only $35.00!

Author: Henry Frank Moore
Publisher:
ISBN:
Category : Sponges
Languages : en
Pages : 256

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Author: Jules Cotte
Publisher:
ISBN:
Category : Sponges
Languages : en
Pages : 32

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Author: John Frederick Storr
Publisher:
ISBN:
Category : Sponge fisheries
Languages : en
Pages : 84

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Book Description

Author: Natalie Lunis
Publisher: Bearport Publishing
ISBN: 1597165123
Category : Juvenile Nonfiction
Languages : en
Pages : 28

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Book Description
Text and photographs present amazing facts about sponges.