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Description of a Collection of Sponges

Description of a Collection of Sponges PDF Author: Edward Palmer
Publisher:
ISBN:
Category : Sponges
Languages : en
Pages :

Book Description

Description of a Collection of Sponges

Description of a Collection of Sponges PDF Author: Edward Palmer
Publisher:
ISBN:
Category : Sponges
Languages : en
Pages :

Book Description

Fresh-Water Sponges in the Collection of the United States National Museum - Part 3 - Description of a New Species of Spongilla From China

Fresh-Water Sponges in the Collection of the United States National Museum - Part 3 - Description of a New Species of Spongilla From China PDF Author: United States National Museum
Publisher:
ISBN:
Category :
Languages : en
Pages :

Book Description

Freshwater Sponges, Hydroids & P̲o̲l̲y̲z̲o̲a̲

Freshwater Sponges, Hydroids & P̲o̲l̲y̲z̲o̲a̲ PDF Author: Nelson Annandale
Publisher:
ISBN:
Category : Bryozoa
Languages : en
Pages : 288

Book Description

Comprehensive Revision of a Worldwide Collection of Freshwater Sponges

Comprehensive Revision of a Worldwide Collection of Freshwater Sponges PDF Author: James Theophilus Penney
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 212

Book Description
Racek seems to have authored much of this work after the death of J. T. Penney and undertook a study and review of Penny's huge colleciton of material and unpublished data at the recommendation of B. Theodore Cole of the University of South Carolina. In view of the voluminous material available, Racek found it imperative to revise all true gemmule-producing species rather than elaborate Penny's outlined account of the Meyeninae and as a result of the study, demonstrated the fallacy of a subdivision of the family Spongillidae by using gemmosclere characteristics.

Fresh-water Sponges in the Collection of the United States National Museum

Fresh-water Sponges in the Collection of the United States National Museum PDF Author: Nelson Annandale
Publisher:
ISBN:
Category : Sponges
Languages : en
Pages : 183

Book Description

A Monograph of the Horny Sponges

A Monograph of the Horny Sponges PDF Author: Robert Lendenfeld
Publisher:
ISBN:
Category : Sponges
Languages : en
Pages : 1150

Book Description

A Guide to the Deep-water Sponges of the Aleutian Island Archipelago

A Guide to the Deep-water Sponges of the Aleutian Island Archipelago PDF Author: Robert P. Stone
Publisher:
ISBN:
Category : Sponges
Languages : en
Pages : 206

Book Description
Furthermore, sponges are extremely fragile and easily damaged by contact with fishing gear. High rates of fishery bycatch clearly indicate a strong interaction between existing fisheries and sponge habitat. Bycatch in fisheries and fisheries-independent surveys can be a major source of information on the location of the sponge fauna, but current monitoring programs are greatly hampered by the inability of deck personnel to identify bycatch. This guide contains detailed pecies descriptions for 112 sponges collected in Alaska, principally in the central Aleutian Islands. It addresses bycatch identification challenges by providing fisheries observers and scientists with the information necessary to adequately identify sponge fauna.Using that identification data, areas of high abundance can be mapped and the locations of indicator species of vulnerable marine ecosystems can be determined.

Bulletin

Bulletin PDF Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1114

Book Description

Systema Porifera

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

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.

Methods for Collection and Analysis of Aquatic Biological and Microbiological Samples

Methods for Collection and Analysis of Aquatic Biological and Microbiological Samples PDF Author: Phillip E. Greeson
Publisher:
ISBN:
Category : Aquatic biology
Languages : en
Pages : 344

Book Description

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