A Characterization of the Coral and Sponge Community on Piggy Bank Seamount in Southern California from a Survey Using a Remotely Operated Vehicle PDF Download
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Author: Mary M. Yoklavich
Publisher:
ISBN:
Category : Deep sea corals
Languages : en
Pages : 63
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Book Description
"The specific objectives of our research during Leg 3 were to: 1. collect baseline data on abundance, size, condition, and distribution of DSC on the Piggy Bank seamount; 2. quantify fish and invertebrate associations with DSC to help understand the value of DSC as habitat; 3. document environmental conditions of DSC habitats, including depth, sea floor substratum types, and seawater temperature, salinity, pH, and dissolved oxygen to help understand habitat factors that influence DSC distribution; and 4. collect specimens of DSC and associated organisms for confirmation of taxonomic identifications and for genetic, reproductive, and stable isotope analyses"--Page 2.
Author: Mary M. Yoklavich
Publisher:
ISBN:
Category : Deep sea corals
Languages : en
Pages : 63
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Book Description
"The specific objectives of our research during Leg 3 were to: 1. collect baseline data on abundance, size, condition, and distribution of DSC on the Piggy Bank seamount; 2. quantify fish and invertebrate associations with DSC to help understand the value of DSC as habitat; 3. document environmental conditions of DSC habitats, including depth, sea floor substratum types, and seawater temperature, salinity, pH, and dissolved oxygen to help understand habitat factors that influence DSC distribution; and 4. collect specimens of DSC and associated organisms for confirmation of taxonomic identifications and for genetic, reproductive, and stable isotope analyses"--Page 2.
Author: Santiago Herrera
Publisher: Frontiers Media SA
ISBN: 2889760693
Category : Science
Languages : en
Pages : 336
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Book Description
Author: Kaitlin Graiff
Publisher:
ISBN:
Category : Deep sea corals
Languages : en
Pages : 21
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Book Description
"This report provides summary results from leg 2 (Central California) of the 2010 effort in which a Remotely Operated Vehicle (ROV) was deployed from the NOAA ship McArthur II to survey potential DSC habitat. The specific objectives of our research during Leg 2 were to: 1. Survey and characterize the distribution, abundance, and condition of DSC communities in and adjacent to Cordell Bank (CBNMS) and Gulf of the Farallones (GFNMS) National Marine Sanctuaries; 2. Quantify fish and invertebrate associations with DSC to help understand the value of DSC as habitat; 3. Collect limited DSC specimens to confirm taxonomic identification; 4. Make visual observations of sea floor substratum to refine habitat classifications derived from multibeam sonar data"--Page 2.
Author: Ed Bowlby
Publisher:
ISBN:
Category : Deep sea corals
Languages : en
Pages : 56
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Book Description
"Deep-sea corals (DSC), particularly structure forming corals, are biogenic habitats and are recognized as slow-growing, long-lived and fragile, making them and their associated organisms vulnerable to human-induced impacts, particularly from physical disturbances (NRC 2002; Hourigan et al. 2007; NOAA 2010). The extent of habitat degradation resulting from these threats is largely unknown although there is increasing information on significant impacts in some areas. Activities that can directly impact deep coral communities include fishing using bottom-tending fishing gear, deep coral harvesting, oil and gas and mineral exploration and production, and submarine cable/pipeline deployment. Invasive species, climate change and ocean acidification represent additional serious threats"--Page 1.
Author: Kevin L. Stierhoff
Publisher:
ISBN:
Category : Deep sea corals
Languages : en
Pages : 38
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Book Description
"Five ROV transect surveys were conducted between San Diego, CA and Seattle, WA. The total submerged time of 9 hours 45 minutes. The total seafloor distance surveyed was ~5.1 kilometers (km). The depth range of observations was from 110-400 meters (m) (Table 1). Many deep-sea octocorals, cup corals, and sponges were observed throughout the survey. The ROV's single function manipulator was used to collect four deep-sea coral specimens for molecular and morphological taxonomy plus three serendipitous samples of invertebrates associated with those corals. Samples consisted of: (1) Dendrophyllia sp., (2) brittle stars, (2) Euplexaura markii, (~20) amphipods associated with E. markii, and (1) Swiftia pacifica (see Appendix 1)"--Survey summary.
Author: Mary M. Yoklavich
Publisher:
ISBN:
Category : Benthic animals
Languages : en
Pages : 39
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Book Description
"Using an autonomous underwater vehicle (AUV) and towed camera system (TCS), deep-sea corals, sponges, and seafloor habitats were visually surveyed for the first time in areas of longtime trawl fishing off northern California. During an 11-day cruise aboard the R/V Point Sur 8-18 September 2014, researchers completed 6 dives with the AUV and 9 deployments of the TCS, and spent over 42 hours underwater at depths of 586-1169 meters from the Oregon- California border to the Mendocino Ridge (...) This report provides a summary of the methods and results from these underwater surveys of DSC&S off northern California. This was a collaborative effort among investigators from NOAA National Marine Fisheries Service (Southwest Fisheries Science Center, Northwest Fisheries Science Center [NWFSC], Pacific Islands Fisheries Science Center [PIFSC], and Alaska Fisheries Science Center [AFSC]) and several universities including California State University (Humboldt State University and Moss Landing Marine Laboratories), University of California Santa Cruz, and Oregon State University"--Page 1. [doi:10.7289/V5/TM-SWFSC-556 (http://dx.doi.org/10.7289/V5/TM-SWFSC-556)]
Author: Peter J. Etnoyer
Publisher:
ISBN:
Category : Benthos
Languages : en
Pages : 32
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Book Description
"The purpose of the surveys was to groundtruth mapping data collected in 2011, and to characterize the seafloor biota, particularly corals and sponges, in order to support Essential Fish Habitat designations under Magnuson-Stevens Act (MSA) and other conservation and management goals under the National Marine Sanctuaries Act ( NMSA). ROV transects of uniform speed and distance (120 meters) were conducted over substrate classes predicted by ruggedness (Sappington et al . 2007) and backscatter intensity from the multibeam echosounder mapping data (Cochrane 2008). The three classes were low/soft, low/hard, and high/hard. The classes are reported here as sediment, mixed, and hard. Transects allowed quantification of organism abundance and density from oblique and down-looking video and still cameras mounted on the ROV. Sessile invertebrates 10 cm or larger were counted"--Page 1.
Author: Steven Auscavitch
Publisher:
ISBN:
Category :
Languages : en
Pages : 205
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Book Description
As the largest and most poorly environment on Earth, the deep-sea is facing global threats from climate change and anthropogenic disturbance further compounded by the lack of critical baseline data on seafloor species composition and community structure. Many data-deficient regions include those in geographically-isolated offshore environments, like low-latitude seamounts, where sampling and surveys have been limited, resulting in critical knowledge gaps that do not allow for effective conservation measures to be realized. This work seeks to characterize the coral fauna of tropical seamount environments greater than 150 m depth and understand the environmental controls on species distribution and community assembly for long-lived, ecologically-important species, primarily from the Octocorallia, Antipatharia, Stylasteridae, and Scleractinia. Methodologies for accomplishing this research have included analysis of remotely operated vehicle (ROV) video surveys and identification of collected voucher specimens to understand biogeographic patterns within coral communities on seamounts and other rugged seafloor features in 3 different regions: the tropical western Atlantic (Anegada Passage), the equatorial central Pacific (Phoenix Islands), and the tropical eastern Pacific (Costa Rica). These regions represent vastly different oceanographic regimes in terms of biological productivity and water column structure resulting in differential effects on deep-sea coral communities. Evidence from these three regions has shown significant effects of the role that oceanic water masses have on structuring deep-water coral biodiversity and suggests that these features, along with other abiotic environmental variables, are important indicators for understanding species distribution patterns, community structure, and global biogeographic patterns. More broadly, the results of this work have demonstrated the capabilities of exploratory ROV surveys, across multiple platforms, to add practical knowledge to coral species inventories and identify bathyal biogeographic patterns in remote regions of the deep sea. The results of this work, serving as baseline coral biodiversity surveys for each area, are also germane to evaluating the effects of human-mediated disturbance and global climate change in the deep ocean. These disturbances also include ocean acidification, ocean deoxygenation, deep-sea mining, and bottom-contact fishing, all of which have been identified as threats to the seamount benthos.
Author:
Publisher:
ISBN:
Category : Coral reef conservation
Languages : en
Pages : 48
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Book Description
Report on research cruise conducted from May 22-June 4, 2006, using the ROPOS Remotely Operated Vehicle (ROV) to conduct dives at targeted sites in Olympic Coast National Marine Sanctuary, to document deep coral and sponge communities. Survey locations included sites both inside and outside the Essential Fish Habitat Conservation Area, and were selected from areas for which the sanctuary had side scan sonar data indicating the presence of hard or complex substrate. The team documented several species of corals and sponges at 14 of the 15 sites surveyed, as well as coral rubble, dead gorgonians, lost fishing gear, and anthropogenic debris.
Author: M. Elizabeth Clarke
Publisher:
ISBN:
Category : Hexactinellida
Languages : en
Pages : 62
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Book Description
"The goals of this project are to: 1) Examine the extent of the sponge reef identified in 2007 and proposed for protection by Oceana in 2009; 2) Describe the associated ecosystem to assist in determining this area's role as EFH; and 3) Provide the PFMC with additional information to assess any actions that may be needed to protect the Grays Canyon sponge area. Targeted habitats for this work were soft bottom and moderately rocky habitat offshore of Grays Harbor, WA. The primary survey site was centered at the glass sponge site already identified by Paul Johnson (Johnson 2008, 2009). The SeaBed AUV, Lucille, was used to conduct photographic surveys of macro-fauna, including invertebrates and bottom fish in order to determine the species composition and density of sponges and associated fish fauna"--Page 2.
