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Institution Dataset ID
     data        files  public Database of oyster mortality based on body size treatment    ?     I   M   background (external link) RSS Subscribe BCO-DMO bcodmo_dataset_804502

The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL access_formats String .htmlTable,.csv,.json,.mat,.nc,.tsv
attribute NC_GLOBAL acquisition_description String We utilised 10-month old oysters, spawned under the breeding program at the
Port Stephens Fisheries Institute (PSFI) in January 2015 and subsequently
grown out on nearby oyster leases, to establish three phenotypic treatments
with respect to size. The phenotypes were Small (mean size \u00b1 SE; 18.88
\u00b1 0.17 mm shell length), Medium (32.23 \u00b10.21 mm shell length) and
Large (39.04 \u00b1 0.32 mm shell length), with each phenotype receiving at
least 100 oysters from each of the same 16 family lines to produce treatments
of comparable genetic diversity.\u00a0

Oysters were manipulated on concrete tiles that were deployed at a mid-
intertidal elevation along the eastern shoreline of Chowder Bay, Sydney
Harbour, Australia (33\u00b050\u201919.80\u201dS,

Oyster phenotypic diversity (3 levels; 1, 2 or 3 size classes/tile) and
predator access (2 levels: small mesh cages and large mesh cages) were
manipulated in a fully orthogonal experiment on concrete tiles, measuring 30cm
(length) x 30cm (width) x 4cm (height). The large mesh was 2.5 cm in diameter.
The small mesh was 1.5 cm in diameter. In total we had 14 treatments: small
and large mesh cages containing small, medium and large oysters on their own,
all pairwise combinations, and all three phenotypes together. There were five
replicates per treatment, giving a total of 70 tiles.

Oysters were glued to concrete tiles using a 2-part epoxy adhesive (Megapoxy
HT, Permatech), with the various body sizes haphazardly interspersed on tiles
assigned to receive multiple phenotypes.\u00a0 There was a 3 cm margin with no
oysters around each plate. No oysters died from this process.

Prior to caging of tiles, each was photographed (with a scale bar included) to
determine the initial size of all oysters and the position on each tile of the
various size classes.\u00a0 We used maximum shell length along the
anterior\u2013posterior axis as our measure of body size

Tiles were then enclosed within a box cage consisting of stainless steel mesh
of the assigned size. The tiles were not affixed to the mesh cage but sat on
the bottom of it. The mesh extended 10 cm above the surface of the tile. Mesh
was secured on the underside of the tile with cable ties.

Tiles were placed in Chowder Bay at the mid intertidal elevation at which
oysters naturally occur on 17th November 2015. Tiles were interspersed with
respect to treatment, separated by at least 0.5 m and wedged between boulders
to minimise flipping by waves. The tiles were sampled at 1 week and after 8
weeks (15 Jan 2016). At 1 week, three tiles were flipped by wave action but no
damage to oysters or cages were observed, so these were righted and secured in
new positions between boulders. No other flipping or damage to tiles was
recorded at the end of the experiment.
attribute NC_GLOBAL awards_0_award_nid String 709941
attribute NC_GLOBAL awards_0_award_number String OCE-1652320
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1652320 (external link)
attribute NC_GLOBAL awards_0_funder_name String NSF Division of Ocean Sciences
attribute NC_GLOBAL awards_0_funding_acronym String NSF OCE
attribute NC_GLOBAL awards_0_funding_source_nid String 355
attribute NC_GLOBAL awards_0_program_manager String Michael E. Sieracki
attribute NC_GLOBAL awards_0_program_manager_nid String 50446
attribute NC_GLOBAL awards_1_award_nid String 805237
attribute NC_GLOBAL awards_1_award_number String FT140100322
attribute NC_GLOBAL awards_1_funder_name String Australian Research Council
attribute NC_GLOBAL awards_1_funding_acronym String ARC
attribute NC_GLOBAL awards_1_funding_source_nid String 805236
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String Oyster mortality
PI: Randall Hughes
Data Version 1: 2020-03-02
attribute NC_GLOBAL Conventions String COARDS, CF-1.6, ACDD-1.3
attribute NC_GLOBAL creator_email String info at bco-dmo.org
attribute NC_GLOBAL creator_name String BCO-DMO
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String https://www.bco-dmo.org/ (external link)
attribute NC_GLOBAL data_source String extract_data_as_tsv version 2.3 19 Dec 2019
attribute NC_GLOBAL date_created String 2020-03-02T14:10:50Z
attribute NC_GLOBAL date_modified String 2020-03-03T15:55:54Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.804502.1
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/804502 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL keywords String bco, bco-dmo, biological, cage, Cage_mesh_size, chemical, data, dataset, density, dmo, erddap, individual, Individual_mortality, Individual_oyster_size, management, mesh, mode, Mode_of_mortality, mortality, oceanography, office, oyster, Oyster_size_treatment, plate, Plate_density, Plate_replicate, preliminary, replicate, size, treatment
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/804502/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/804502 (external link)
attribute NC_GLOBAL param_mapping String {'804502': {}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/804502/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String Northeastern University
attribute NC_GLOBAL people_0_affiliation_acronym String NEU
attribute NC_GLOBAL people_0_person_name String A. Randall Hughes
attribute NC_GLOBAL people_0_person_nid String 522929
attribute NC_GLOBAL people_0_role String Principal Investigator
attribute NC_GLOBAL people_0_role_type String originator
attribute NC_GLOBAL people_1_affiliation String University of New South Wales
attribute NC_GLOBAL people_1_affiliation_acronym String UNSW
attribute NC_GLOBAL people_1_person_name String Paul Gribben
attribute NC_GLOBAL people_1_person_nid String 804507
attribute NC_GLOBAL people_1_role String Co-Principal Investigator
attribute NC_GLOBAL people_1_role_type String originator
attribute NC_GLOBAL people_2_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_2_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_2_person_name String Karen Soenen
attribute NC_GLOBAL people_2_person_nid String 748773
attribute NC_GLOBAL people_2_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_2_role_type String related
attribute NC_GLOBAL project String Seagrass and Oyster Ecosystems
attribute NC_GLOBAL projects_0_acronym String Seagrass and Oyster Ecosystems
attribute NC_GLOBAL projects_0_description String NSF Award Abstract:
Disease outbreaks in the ocean are increasing, causing losses of ecologically important marine species, but the factors contributing to these outbreaks are not well understood. This 5-year CAREER project will study disease prevalence and intensity in two marine foundation species - the seagrass Zostera marina and the Eastern oyster Crassostrea virginica. More specifically, host-disease relationships will be explored to understand how genetic diversity and population density of the host species impacts disease transmission and risk. This work will pair large-scale experimental restorations and smaller-scale field experiments to examine disease-host relationships across multiple spatial scales. Comparisons of patterns and mechanisms across the two coastal systems will provide an important first step towards identifying generalities in the diversity-density-disease relationship. To enhance the broader impacts and utility of this work, the experiments will be conducted in collaboration with restoration practitioners and guided by knowledge ascertained from key stakeholder groups. The project will support the development of an early career female researcher and multiple graduate and undergraduate students. Students will be trained in state-of-the-art molecular techniques to quantify oyster and seagrass parasites. Key findings from the surveys and experimental work will be incorporated into undergraduate courses focused on Conservation Biology, Marine Biology, and Disease Ecology. Finally, students in these courses will help develop social-ecological surveys and mutual learning games to stimulate knowledge transfer with stakeholders through a series of workshops.
The relationship between host genetic diversity and disease dynamics is complex. In some cases, known as a dilution effect, diversity reduces disease transmission and risk. However, the opposite relationship, known as the amplification effect, can also occur when diversity increases the risk of infection. Even if diversity directly reduces disease risk, simultaneous positive effects of diversity on host density could lead to amplification by increasing disease transmission between infected and uninfected individuals. Large-scale field restorations of seagrasses (Zostera marina) and oysters (Crassostrea virginica) will be utilized to test the effects of host genetic diversity on host population density and disease prevalence/intensity. Additional field experiments independently manipulating host genetic diversity and density will examine the mechanisms leading to dilution or amplification. Conducting similar manipulations in two marine foundation species - one a clonal plant and the other a non-clonal animal - will help identify commonalities in the diversity-density-disease relationship. Further, collaborations among project scientists, students, and stakeholders will enhance interdisciplinary training and help facilitate the exchange of information to improve management and restoration efforts. As part of these efforts, targeted surveys will be used to document the perceptions and attitudes of managers and restoration practitioners regarding genetic diversity and its role in ecological resilience and restoration.
attribute NC_GLOBAL projects_0_end_date String 2022-01
attribute NC_GLOBAL projects_0_geolocation String Coastal New England
attribute NC_GLOBAL projects_0_name String CAREER: Linking genetic diversity, population density, and disease prevalence in seagrass and oyster ecosystems
attribute NC_GLOBAL projects_0_project_nid String 709942
attribute NC_GLOBAL projects_0_start_date String 2017-02
attribute NC_GLOBAL publisher_name String Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute NC_GLOBAL publisher_type String institution
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String Database of oyster mortality based on body size treatment
attribute NC_GLOBAL title String Database of oyster mortality based on body size treatment
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable Plate_density   String  
attribute Plate_density bcodmo_name String sample_descrip
attribute Plate_density description String Descriptor of the density of the experimental plate: Full (24 oysters per plate); Half (12 oysters per plate); Third (8 oysters per plate)
attribute Plate_density long_name String Plate Density
attribute Plate_density units String unitless
variable Plate_replicate   String  
attribute Plate_replicate bcodmo_name String replicate
attribute Plate_replicate description String Unique identifier for replicate plates within a given treatment
attribute Plate_replicate long_name String Plate Replicate
attribute Plate_replicate units String unitless
variable Cage_mesh_size   String  
attribute Cage_mesh_size bcodmo_name String sample_descrip
attribute Cage_mesh_size description String Descriptor of the mesh size used to surround each experimental plate: Small Mesh or Large Mesh
attribute Cage_mesh_size long_name String Cage Mesh Size
attribute Cage_mesh_size units String unitless
variable Oyster_size_treatment   String  
attribute Oyster_size_treatment bcodmo_name String sample_descrip
attribute Oyster_size_treatment description String Size treatment for the experimental plate: S (small oysters only); M (medium oysters only); L (large oysters only); SM (mix of small and medium oysters); SL (mix of small and large oysters); ML (mix of medium and large oysters); SML (mix of small, medium, and large oysters)
attribute Oyster_size_treatment long_name String Oyster Size Treatment
attribute Oyster_size_treatment units String unitless
variable Individual_oyster_size   String  
attribute Individual_oyster_size bcodmo_name String sample_descrip
attribute Individual_oyster_size description String Size class of each individual oyster on the experimental plate
attribute Individual_oyster_size long_name String Individual Oyster Size
attribute Individual_oyster_size units String unitless
variable Individual_mortality   byte  
attribute Individual_mortality _FillValue byte 127
attribute Individual_mortality actual_range byte 0, 1
attribute Individual_mortality bcodmo_name String sample_descrip
attribute Individual_mortality description String Binomial code for the mortality of each individual oyster on the experimental plate: 0 (Alive) or 1 (Dead)
attribute Individual_mortality long_name String Individual Mortality
attribute Individual_mortality units String unitless
variable Mode_of_mortality   String  
attribute Mode_of_mortality bcodmo_name String sample_descrip
attribute Mode_of_mortality description String Category for the mode of mortality of each individual oyster: U (unknown); M (missing valve); D (drilled by a predator); C (crushed by a predator)
attribute Mode_of_mortality long_name String Mode Of Mortality
attribute Mode_of_mortality units String unitless

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.

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