A Guide To The Deep Water Sponges Of The Aleutian Island Archipelago

Author : Robert P. Stone
Publisher :
ISBN 13 :
Total Pages : 206 pages
Book Rating : 4.25/5 ( download)

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Download or read book A Guide to the Deep-water Sponges of the Aleutian Island Archipelago written by Robert P. Stone and published by . This book was released on 2011 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Author : Robert P.. Stone
Publisher :
ISBN 13 :
Total Pages : 187 pages
Book Rating : 4.14/5 ( download)

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Download or read book A Guide to the Deep-water Sponges of the Aleutian Island Archipelago written by Robert P.. Stone and published by . This book was released on 2011 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The first dedicated collections of deep-water (>80 m) sponges from the central Aleutian Islands revealed a rich fauna including 28 novel species and geographical range extensions for 53 others. Based on these collections and the published literature, we now confirm the presence of 125 species (or subspecies) of deep-water sponges in the Aleutian Islands. Clearly the deep-water sponge fauna of the Aleutian Islands is extraordinarily rich and largely understudied. Submersible observations revealed that sponges, rather than deep-water corals, are the dominant feature shaping benthic habitats in the region and hat they provide important refuge habitat for many species of fish and invertebrates including juvenile rockfish (Sebastes spp.) and king crabs (Lithodes sp). Examination of video footage collected along 127 km of the seafloor further indicate that there are likely hundreds of species still uncollected from the region, and many unknown to science. 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 species 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. The guide is also designed for use by scientists making observations of the fauna in situ with submersibles, including remotely operated vehicles and autonomous underwater vehicles"--Abstract.

Author : Robert P. Stone
Publisher :
ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.94/5 ( download)

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Download or read book The Ecology of Deep-sea Coral and Sponge Habitats of the Central Aleutian Islands of Alaska written by Robert P. Stone and published by . This book was released on 2014 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : David Thomas Drumm
Publisher :
ISBN 13 :
Total Pages : 308 pages
Book Rating : 4.77/5 ( download)

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Download or read book An Annotated Checklist of the Marine Macroinvertebrates of Alaska written by David Thomas Drumm and published by . This book was released on 2016 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: A current and comprehensive species list of marine invertebrates of Alaska is essential for effective management of living marine resources, sustainable fisheries, conservation of vulnerable ecosystems, and advancement of our knowledge of biodiversity and ecosystem function. Furthermore, the most current checklist available to resource managers and scientists is quite dated and limited in that it only includes the marine invertebrates of the southern coast of Alaska to California. Since that checklist was published, many new species have been described, many range extensions have been discovered, and considerable changes in higher-level systematics have been made. The checklist that we have compiled lists 3708 species and presents for each species the currently accepted scientific name and its significant synonyms, common names, type localities, geographic and depth distributions, a general statement of abundance in Alaska when known (e.g., rare, uncommon, common, abundant), and general remarks. It includes species recorded in the marine waters of Alaska from the intertidal zone, continental shelf, and upper continental slope to abyssal depths, from the Beaufort Sea at the Arctic border with Yukon, Canada; the eastern Chukchi Sea, the eastern Bering Sea, the Aleutian Islands to the western border with Russia; and the Gulf of Alaska to Dixon Entrance at the southern border with British Columbia. Sound and reliable taxonomic identifications are necessary to monitor and predict changes in the distribution and abundance of marine species. The current status and future direction of the study of Alaskan marine invertebrate biodiversity are briefly discussed.

Author : Henry Michael Reiswig
Publisher :
ISBN 13 : 9781775571285
Total Pages : 64 pages
Book Rating : 4.89/5 ( download)

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Download or read book New Glass Sponges (Porifera:Hexactinellida) from Deep Waters of the Central Aleutian Islands, Alaska written by Henry Michael Reiswig and published by . This book was released on 2013 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Robert P. Stone
Publisher :
ISBN 13 :
Total Pages : 42 pages
Book Rating : 4.01/5 ( download)

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Download or read book Deep-sea Emergence of Red Tree Corals (Primnoa Pacifica) in Southeast Alaska Glacial Fjords written by Robert P. Stone and published by . This book was released on 2018 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Henry Michael Reiswig
Publisher :
ISBN 13 : 9781775571292
Total Pages : 64 pages
Book Rating : 4.97/5 ( download)

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Download or read book New Glass Sponges (Porifera : Hexactinellida) from Deep Waters of the Central Aleutian Islands, Alaska written by Henry Michael Reiswig and published by . This book was released on 2013 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hexactinellida from deep-water communities of the central Aleutian Islands, Alaska, are described. They were mostly collected by the remotely operated vehicle 'Jason II' from 494-2311 m depths during a 2004 RV 'Roger Revelle' expedition, but one shallow-water species collected with a shrimp trawl from 155 m in the same area is included. The excellent condition of the ROV-collected specimens enabled valuable redescription of some species previously known only from badly damaged specimens. New taxa include one new genus and eight new species in five families. Farreidae consist of two new species, Farrea aleutiana and F. aspondyla. Euretidae consists of only Pinulasma fistulosum n. gen., n. sp. Tretodictyidae include only Tretodictyum amchitkensis n. sp. Euplectellidae consists of only the widespread species Regadrella okinoseana Ijima, reported here over 3,700 km from its closest previously known occurrence. The most diverse family, Rossellidae, consists of Aulosaccus ijimai (Schulze), Aulosaccus schulzei Ijima, Bathydorus sp. (young stage not determinable to species), Caulophacus (Caulophacus) adakensis n. sp., Acanthascus koltuni n. sp., Staurocalyptus psilosus n. sp., Staurocalyptus tylotus n. sp. and Rhabdocalyptus mirabilis Schulze. We present argument for reinstatement of the abolished rossellid subfamily Acanthascinae and return of the subgenera Staurocalyptus Ijima and Rhabdocalyptus Schulze to their previous generic status. These fauna provides important complexity to the hard substrate communities that likely serve as nursery areas for the young stages of commercially important fish and crab species, refuge from predation for both young and adult stages, and also as a focal source of prey for juvenile and adult stages of those same species.

Author : Welton L. Lee
Publisher :
ISBN 13 :
Total Pages : 422 pages
Book Rating : 4.29/5 ( download)

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Download or read book The Sponges of California written by Welton L. Lee and published by . This book was released on 2007 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: The California Sponges project Addresses two basic needs. Need to organize and codify the minimal and cattered accounts of California Sponges so that more detailed and meaningful work on their systematics could begin. Need to create a key useable by experts as well as by ecologists, biologists, products chemists or students to identify California Sponges. Meeting these needs has required the profuseuse of illustrations so that misinterpretation would be minimal.

Author : Reid Brewer
Publisher : Alaska Sea Grant College Program
ISBN 13 : 9781566121644
Total Pages : 0 pages
Book Rating : 4.47/5 ( download)

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Download or read book Sea Life of the Aleutians written by Reid Brewer and published by Alaska Sea Grant College Program. This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the nearshore waters of Alaska's remote and pristine Aleutian Islands is an astoundingly diverse and beautiful undersea world that is captured here for the first time, through color photographs taken by research divers. The photographs in this book convey the awe-inspiring experience of the divers as they encountered the spectacular beauty of the underwater Aleutians ecosystems. Together with an accompanying text that provides natural history information and an overview of the geography, geology, and oceanography of the 1,200-mile archipelago, the images are a powerful vehicle for science education, making apparent the need to preserve the region's natural splendor.

Author : Helmut Lehnert
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.36/5 ( download)

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Download or read book New Species of Deep-sea Demosponges (Porifera) from the Aleutian Islands (Alaska, USA) written by Helmut Lehnert and published by . This book was released on 2006 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: