http://lod.bco-dmo.org/id/dataset/3434
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2011-03-03
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Red Crab stock assessment project: 100-600 fathoms, from the Canadian border (Hague Line) to approximately Hudson Canyon from 2004-2005 (NEC-CoopRes project)
2007-04-30
publication
2007-04-30
revision
BCO-DMO Linked Data URI
2007-04-30
creation
http://lod.bco-dmo.org/id/dataset/3434
Professor Richard A. Wahle
Bigelow Laboratory for Ocean Sciences
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Wahle, R. A. (2007) Red Crab stock assessment project: 100-600 fathoms, from the Canadian border (Hague Line) to approximately Hudson Canyon from 2004-2005 (NEC-CoopRes project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version final) Version Date 2007-04-30 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/3434 [access date]
Red Crab stock assessment project, Northeast US slope waters, 2004-2005: animals seen in camera sled photos Dataset Description: <pre>
&nbsp;</pre>
<h3>Red Crab Tag Data</h3>
<p><strong>Project Leader: </strong><em>Richard A. Wahle, </em> Bigelow Laboratory for Ocean Sciences<br />
<strong>Additional Participants:</strong><br />
<em>Jon Williams, </em>Benthic Fishing Corp.<br />
<em>Yong Chen, </em>University of Maine</p>
<p><strong>Companion objects:</strong><br />
<a href="http://nec.whoi.edu/jg/serv/NEC/Stock_Assessment/redcrab_tag.html0%7Bdir=nec.whoi.edu/jg/dir/nec/Stock/,info=nec.whoi.edu/jg/info/nec/Stock/redcrab_tag%7D">red crab tag data</a><br />
<a href="http://nec.whoi.edu/jg/serv/NEC/Stock_Assessment/redcrab_tag_return.html0%7Bdir=nec.whoi.edu/jg/dir/nec/Stock/,info=nec.whoi.edu/jg/info/nec/Stock/redcrab_tag_ret%7D">red crab return data</a><br />
<a href="http://nec.whoi.edu/jg/serv/NEC/Stock_Assessment/redcrab_temp.html0%7Bdir=nec.whoi.edu/jg/dir/nec/Stock/,info=nec.whoi.edu/jg/info/nec/Stock/redcrab_temp%7D">redcrab temperature data</a><br />
<a href="http://nec.whoi.edu/jg/serv/NEC/Stock_Assessment/redcrab_camera.html0%7Bdir=nec.whoi.edu/jg/dir/nec/Stock/,info=nec.whoi.edu/jg/info/nec/Stock/redcrab_camera%7D">redcrab camera data</a><br />
<a href="http://nec.whoi.edu/jg/serv/NEC/Stock_Assessment/redcrab_trawl_log.html0%7Bdir=nec.whoi.edu/jg/dir/nec/Stock/,info=nec.whoi.edu/jg/info/nec/Stock/redcrab_trawl_log%7D">red crab trawl log data</a><br />
<a href="http://nec.whoi.edu/jg/serv/NEC/Stock_Assessment/redcrab_trawl.html0%7Bdir=nec.whoi.edu/jg/dir/nec/Stock/,info=nec.whoi.edu/jg/info/nec/Stock/redcrab_trawl%7D">redcrab trawl data</a>.</p>
<p>"The objectives of the main project were to: (1) Employ camera-based and net-trawl sampling methodology established by an earlier NMFS red crab surveys (Wigley et al. 1975) to determine wheter abundance, size structure, and sex composition of the population has changed significantly at the same sites sampled in 1974, (2) Conduct sea sampling to better characterize the commercail catch, (3) Conduct tagging to obtain much needed information on red crab growth rates and movement, and (4) Develop three stock assessment modeling approaches of different complexities (size-structured yield-per-recruit model, production model, and size-structuredied simulation model) to evaluate the dynamics of the red crab stock, estimate current status of the fishery, and evaluate alternative management strategies. The supplemental project compared the efficacy of otter-trawl to net trawl in this application.</p>
<p>The benthic sled system for camera surveys combined with net trawl collection generated the first population density estimates and demographic data of red crab in 30 years. The comparison of the two net trawl methods confirmed that otter trawls were the most efficient approach in these surveys. Results of the main project indicated that the abundance of the largest crabs targeted early in the history of the fishery (males&gt;114 mm, 4.5 inches) is down by approximately 42% since 1974. Based on sea sampling data the fishery now harvests smaller male crabs, and the standing biomass of crabs currently harvested is on a par with 1974 levels. The abundance of smaller males and females is substantially higher than in 1974. Some 9600 crabs were tagged over the course of the study, and of about 300 returns there was little evidence of growth, which is consistent with prior evidence of slow growth for this species. However, the limited growth data curtailed application of the stock assessment models. The full parameterization of these models awaits addtional growth data. Models are implemented as Excel spread sheets that and are available from the PI, and will be easy for the user to update as data become available. These results were a key component of the NMFS red crab stock assessment conducted in 2006. "<em>(extracted from: Final Report Submitted to the NORTHEAST CONSORTIUM, December 11, 2006)</em></p>
<p>&nbsp;</p>
<p><strong>Questions regarding this data set should be directed to:</strong><br />
Richard A. Wahle<br />
Bigelow Laboratory for Ocean Sciences<br />
P.O. Box 475<br />
West Boothbay Harbor, ME<br />
04575<br />
<br />
Phone: 207 633-9659<br />
E-mail: <a href="mailto:rwahle@bigelow.org">rwahle@bigelow.org</a></p>
<pre>
&nbsp;</pre> Methods and Sampling: <p>The benthic sled system for camera surveys combined with net trawl collection generated the first population density estimates and demographic data of red crab in 30 years. The comparison of the two net trawl methods confirmed that otter trawls were the most efficient approach in these surveys. Results of the main project indicated that the abundance of the largest crabs targeted early in the history of the fishery (males&gt;114 mm, 4.5 inches) is down by approximately 42% since 1974. Based on sea sampling data the fishery now harvests smaller male crabs, and the standing biomass of crabs currently harvested is on a par with 1974 levels. The abundance of smaller males and females is substantially higher than in 1974. Some 9600 crabs were tagged over the course of the study, and of about 300 returns there was little evidence of growth, which is consistent with prior evidence of slow growth for this species. However, the limited growth data curtailed application of the stock assessment models. The full parameterization of these models awaits addtional growth data. Models are implemented as Excel spread sheets that and are available from the PI, and will be easy for the user to update as data become available. These results were a key component of the NMFS red crab stock assessment conducted in 2006. "</p>
Funding provided by NorthEast Consortium (NEC) Award Number: unknown NEC-CoopRes NEC
completed
Professor Richard A. Wahle
Bigelow Laboratory for Ocean Sciences
207-633-9600
P.O. Box 475 180 McKown Pt. Road
West Boothbay Harbor
ME
04575-0475
USA
rwahle@bigelow.org
pointOfContact
asNeeded
Dataset Version: final
Unknown
yrday_local
year
date_local
towid
site
bottom_time
depth_start_fm
depth_end_fm
depth_avg
photoid
sector
camera_type
bottom_type
turbidity
turbidity_flag
sled_movement
quality_flag
area
species
count
density
comments
Camera
theme
None, User defined
day of year and decimal time (local time zone)
year
date_local
tow
site
No BCO-DMO term
turbidity
quality flag
species scientific name (binomial)
count
density
comments
featureType
BCO-DMO Standard Parameters
Camera
instrument
BCO-DMO Standard Instruments
NEC-RW2001-1
service
Deployment Activity
along the continental slope of the northeast US, between the depths of 100 and 600 fathoms, from the Canadian border (Hague Line) to approximately Hudson Canyon
place
Locations
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
NorthEast Consortium
http://northeastconsortium.org/
NorthEast Consortium
The Northeast Consortium encourages and funds
cooperative research and monitoring projects in the Gulf of Maine and Georges Bank that have effective,
equal partnerships among fishermen, scientists, educators, and marine resource managers.
At the 2008 Maine Fisheremen's Forum, the Northeast Consortium organized a session on data collection and availability. Participants included several key organizations in the Gulf of Maine area, sharing what data are out there and how you can find them.
The Northeast Consortium has joined the Gulf of Maine Ocean Data Partnership. The purpose of the GoMODP is to promote and coordinate the sharing, linking, electronic dissemination, and use of data on the Gulf of Maine region.
The Northeast Consortium was created in 1999 to encourage and fund effective, equal partnerships among commercial fishermen, scientists, and other stakeholders to engage in cooperative research and monitoring projects in the Gulf of Maine and Georges Bank. The Northeast Consortium consists of four research institutions (University of New Hampshire, University of Maine, Massachusetts Institute of Technology, and Woods Hole Oceanographic Institution), which are working together to foster this initiative.
The Northeast Consortium administers nearly $5M annually from the National Oceanic and Atmospheric Administration for cooperative research on a broad range of topics including gear selectivity, fish habitat, stock assessments, and socioeconomics. The funding is appropriated to the National Marine Fisheries Service and administered by the University of New Hampshire on behalf of the Northeast Consortium. Funds are distributed through an annual open competition, which is announced via a Request for Proposals (RFP). All projects must involve partnership between commercial fishermen and scientists.
The Northeast Consortium seeks to fund projects that will be conducted in a responsible manner. Cooperative research projects should be designed to minimize any negative impacts to ecosystems or marine organisms, and be consistent with accepted ethical research practices, including the use of animals and human subjects in research, scrutiny of research protocols by an institutional board of review, etc.
NEC
largerWorkCitation
program
Northeast Consortium: Cooperative Research
http://northeastconsortium.org/
Northeast Consortium: Cooperative Research
<p>The Northeast Consortium encourages and funds cooperative research and monitoring projects in the Gulf of Maine and Georges Bank that have effective, equal partnerships among fishermen, scientists, educators, and marine resource managers.</p>
<p>The Northeast Consortium seeks to fund projects that will be conducted in a responsible manner. Cooperative research projects are designed to minimize any negative impacts to ecosystems or marine organisms, and be consistent with accepted ethical research practices, including the use of animals and human subjects in research, scrutiny of research protocols by an institutional board of review, etc.</p>
NEC-CoopRes
largerWorkCitation
project
eng; USA
oceans
along the continental slope of the northeast US, between the depths of 100 and 600 fathoms, from the Canadian border (Hague Line) to approximately Hudson Canyon
2007-04-30
Georges Bank, Gulf of Maine
0
BCO-DMO catalogue of parameters from Red Crab stock assessment project: 100-600 fathoms, from the Canadian border (Hague Line) to approximately Hudson Canyon from 2004-2005 (NEC-CoopRes project)
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/23455.rdf
Name: yrday_local
Units: unknown
Description: <p>local day and decimal time, as 326.5 for the 326th day of the year, or November 22 at 1200 hours (noon)</p>
http://lod.bco-dmo.org/id/dataset-parameter/23519.rdf
Name: year
Units: YYYY
Description: <p>year photo was taken</p>
http://lod.bco-dmo.org/id/dataset-parameter/23520.rdf
Name: date_local
Units: mm/dd/yy
Description: <p>local date of photo</p>
http://lod.bco-dmo.org/id/dataset-parameter/23521.rdf
Name: towid
Units: integer
Description: <p>sled tow identification number</p>
http://lod.bco-dmo.org/id/dataset-parameter/23522.rdf
Name: site
Units: text
Description: <p>code for photo location</p>
http://lod.bco-dmo.org/id/dataset-parameter/23523.rdf
Name: bottom_time
Units: hhmm
Description: <p>time on bottom. e.g. 1230=12 hours and 30 minutes</p>
http://lod.bco-dmo.org/id/dataset-parameter/23524.rdf
Name: depth_start_fm
Units: fathoms
Description: <p>depth at start of tow</p>
http://lod.bco-dmo.org/id/dataset-parameter/23525.rdf
Name: depth_end_fm
Units: fathoms
Description: <p>depth at end of tow</p>
http://lod.bco-dmo.org/id/dataset-parameter/23526.rdf
Name: depth_avg
Units: fathoms
Description: <p>average depth of tow</p>
http://lod.bco-dmo.org/id/dataset-parameter/23527.rdf
Name: photoid
Units: alphanumeric
Description: <p>photograph identification</p>
http://lod.bco-dmo.org/id/dataset-parameter/23528.rdf
Name: sector
Units: A to D
Description: <p>sampling area; four geographic sectors originally established by Wigley et al. (1975)</p>
http://lod.bco-dmo.org/id/dataset-parameter/23529.rdf
Name: camera_type
Units: text
Description: <p>still or digital camera</p>
http://lod.bco-dmo.org/id/dataset-parameter/23530.rdf
Name: bottom_type
Units: text
Description: <p>desciption of sea bottom</p>
http://lod.bco-dmo.org/id/dataset-parameter/23531.rdf
Name: turbidity
Units: percent
Description: <p>turbidity</p>
http://lod.bco-dmo.org/id/dataset-parameter/23532.rdf
Name: turbidity_flag
Units: 0 or 1
Description: <p>Turbidity <25% = 1; >25% = 0 (only 2005)</p>
http://lod.bco-dmo.org/id/dataset-parameter/23533.rdf
Name: sled_movement
Units: text
Description: <p>description of sled movement</p>
http://lod.bco-dmo.org/id/dataset-parameter/23534.rdf
Name: quality_flag
Units: 0 or 1
Description: <p>quality flag: Good=1 or Bad = 0</p>
http://lod.bco-dmo.org/id/dataset-parameter/23535.rdf
Name: area
Units: m^2
Description: <p>area of photograph</p>
http://lod.bco-dmo.org/id/dataset-parameter/23536.rdf
Name: species
Units: text
Description: <p>scientific or common name of animal</p>
http://lod.bco-dmo.org/id/dataset-parameter/23537.rdf
Name: count
Units: integer
Description: <p>Animal count on the photo with these exceptions: anenomes: 1=present; 0=absent shrimp: 1=present; 0=absent jellyfish/squid: 1=present; 0=absent tubeworms: 1=present; 0=absent sea pen: 1=present; 0=absent exceptions for years 2003; 2004; 2005 only other years count= # of animals</p>
http://lod.bco-dmo.org/id/dataset-parameter/23538.rdf
Name: density
Units: number per m^2
Description: <p>number of red crabs per unit area</p>
http://lod.bco-dmo.org/id/dataset-parameter/23539.rdf
Name: comments
Units: text
Description: <p>comments on each photo</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
51717212
https://datadocs.bco-dmo.org/file/vmmwM34cOxkYOZ/redcrab_camera.csv
redcrab_camera.csv
Primary data file for dataset ID 3434
download
https://osprey.bco-dmo.org/dataset/3434/data/download
download
onLine
dataset
<p>The benthic sled system for camera surveys combined with net trawl collection generated the first population density estimates and demographic data of red crab in 30 years. The comparison of the two net trawl methods confirmed that otter trawls were the most efficient approach in these surveys. Results of the main project indicated that the abundance of the largest crabs targeted early in the history of the fishery (males&gt;114 mm, 4.5 inches) is down by approximately 42% since 1974. Based on sea sampling data the fishery now harvests smaller male crabs, and the standing biomass of crabs currently harvested is on a par with 1974 levels. The abundance of smaller males and females is substantially higher than in 1974. Some 9600 crabs were tagged over the course of the study, and of about 300 returns there was little evidence of growth, which is consistent with prior evidence of slow growth for this species. However, the limited growth data curtailed application of the stock assessment models. The full parameterization of these models awaits addtional growth data. Models are implemented as Excel spread sheets that and are available from the PI, and will be easy for the user to update as data become available. These results were a key component of the NMFS red crab stock assessment conducted in 2006. "</p>
Specified by the Principal Investigator(s)
<p>"The objectives of the main project were to: (1) Employ camera-based and net-trawl sampling methodology established by an earlier NMFS red crab surveys (Wigley et al. 1975) to determine wheter abundance, size structure, and sex composition of the population has changed significantly at the same sites sampled in 1974, (2) Conduct sea sampling to better characterize the commercail catch, (3) Conduct tagging to obtain much needed information on red crab growth rates and movement, and (4) Develop three stock assessment modeling approaches of different complexities (size-structured yield-per-recruit model, production model, and size-structuredied simulation model) to evaluate the dynamics of the red crab stock, estimate current status of the fishery, and evaluate alternative management strategies. The supplemental project compared the efficacy of otter-trawl to net trawl in this application.</p>
Specified by the Principal Investigator(s)
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
Camera
Camera
PI Supplied Instrument Name: Camera PI Supplied Instrument Description:camera sled: Nikon Coolpix 990 digital still camera modified with a programmable intervalometer and computer interface software designed by Engage Technologies. The camera was housed in a deep-sea titanium housing and was coupled to a Benthos model 382 strobe (on loan from the National Undersea Research Center at the University of Connecticut). The camera was aimed perpendicular to the sled at a height of 1m with a downward angle of 35 degrees. In that position the camera viewed a total area of 10 m2 and an effective illuminated area determined to be 6.6 m2. This was determined using a grid subdivided into 0.01 m2 squares placed horizontally on the sea bed in front of the camera. The system was programmed to take photographs every 15 sec; at a speed of 2 knots a photograph was taken approximately every 14m, a 30 minute tow resulting in about 120 images. Instrument Name: Camera Instrument Short Name:camera Instrument Description: All types of photographic equipment including stills, video, film and digital systems. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/311/
Cruise: NEC-RW2001-1
NEC-RW2001-1
F/V Krystal James
vessel
NEC-RW2001-1
Professor Richard A. Wahle
http://northeastconsortium.org/ProjectFileDownload.pm?report_id=635&table=project_report
Report describing NEC-RW2001-1
F/V Krystal James
vessel