http://lod.bco-dmo.org/id/dataset/3100
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
2010-06-16
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Testing Raised-Webbing Gillnets to Reduce Bycatch of Cod While Targeting Pollock: haul data from F/V Lady Shannon, F/V Rachel T NEC-SE2005-1 in the Gulf of Maine from 2007-2008 (NEC_ProjDev project)
2009-04-03
publication
2009-04-03
revision
BCO-DMO Linked Data URI
2009-04-03
creation
http://lod.bco-dmo.org/id/dataset/3100
Steve Eayrs
Gulf of Maine Research Institute
principalInvestigator
Shale Rosen
Gulf of Maine Research Institute
principalInvestigator
Michael Pol
Massachusetts Division of Marine Fisheries
principalInvestigator
Daniel J Salerno
Gulf of Maine Research Institute
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: Eayrs, S., Rosen, S., Pol, M., Salerno, D. J. (2009) Testing Raised-Webbing Gillnets to Reduce Bycatch of Cod While Targeting Pollock: haul data from F/V Lady Shannon, F/V Rachel T NEC-SE2005-1 in the Gulf of Maine from 2007-2008 (NEC_ProjDev project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 3 April 2009) Version Date 2009-04-03 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/3100 [access date]
Testing Raised-Webbing Gillnets to Reduce Bycatch of Cod While Targeting Pollock: haul data Dataset Description: <p><a href="http://northeastconsortium.org/ProjectFileDownload.pm?report_id=936&amp;table=project_report" target="_blank">Final Report</a>: &quot;Testing Raised-Webbing Gillnets to Reduce Bycatch of Cod While Targeting Pollock&quot; by Daniel J. Salerno; submitted by Steve Eayrs &amp; Daniel J. Salerno</p>
<p>Pollock is a Gadoid fish species that is a target for many commercial fishermen using sink gillnets in the Gulf of Maine. This gear is made up of a wall of webbing extending upwards from the seabed and are used to catch many demersal and benthic groundfish species. From a stock assessment perspective, pollock are considered to be healthy and robust stock as the stock is not overfished and overfishing is not occurring. However, other fish stocks such as Atlantic cod, white hake and yellowtail flounder are not as well off and are considered species of concern due to their stock status.</p>
<p>The ability to target healthy fish stocks with minimal impact to species of concern has become an essential issue for fishermen and managers in the New England region. Amendment 13 to the Northeast Multispecies Fishery Management Plan developed a measure for Special Access Programs to allow fishermen to access healthy fish stocks as long as there was minimal bycatch and impact on less robust stocks. With this in mind, two Gloucester based fishermen approach GMRI with a gillnet design that could potentialachieve this goal. Their design, based on observations made during commercial fishing trips, was to raise the webbing of gillnets off the seabed in order to decrease the Atlantic cod bycatch while targeting pollock. The raised-webbing would be attached across the bottom to a neutrally buoyant foot line which would be attached to the lead line by norsel lines.</p>
<p>Gear trials of the raised-webbing gillnets against standard commercial gear were conducted in the inshore and offshore waters in the Gulf of Maine in the winter of 2007 and 2008. Results indicated that the raised-webbing nets did indeed decrease catch, significantly for some species while maintaining similar catch rates for pollock. These results, however, should be treated as preliminary as it is believed that several factors during field trails may have influenced these findings. One factor specifically was the real time performance of the raised-webbing gillnets during the soak duration. (abstract from <a href="http://northeastconsortium.org/ProjectFileDownload.pm?report_id=936&amp;table=project_report" target="_blank">final report</a>)</p> Methods and Sampling: <p><strong>2007</strong><br />
In January 2007, sea trials of the experimental gillnet gear were completed aboard the F/V Lady Shannon (State Reg. # MS10BM). Two strings of gillnets were constructed of six individual nets each, alternating between the experimental and standard net. The experimental nets were identical in configuration to the standard nets with the exception of the raised-webbing (Table 1). Both strings were set overnight in Massachusetts Bay. Individual species catch weight was recorded to tenths of kilograms separately for the experimental and standard nets.</p>
<table cellspacing="5" border="0" width="50%">
<tbody>
<tr>
<td>&nbsp;</td>
<td>experimental net</td>
<td>standard net</td>
</tr>
<tr>
<td>number of nets per string</td>
<td>3</td>
<td>3</td>
</tr>
<tr>
<td>individual net length</td>
<td>300'</td>
<td>300'</td>
</tr>
<tr>
<td>net webbing height</td>
<td>12'</td>
<td>12'</td>
</tr>
<tr>
<td><strong>norsel height</strong></td>
<td><strong>48&quot;</strong></td>
<td><strong>0&quot;</strong></td>
</tr>
<tr>
<td>mesh size</td>
<td>7&quot;</td>
<td>7&quot;</td>
</tr>
<tr>
<td>vertical mesh count</td>
<td>25</td>
<td>25</td>
</tr>
<tr>
<td>twine size</td>
<td>0.62 mm</td>
<td>0.62 mm</td>
</tr>
<tr>
<td>hanging ratio</td>
<td>1/2</td>
<td>1/2</td>
</tr>
</tbody>
</table>
<p>Table 1. Experimental and standard gillnet gear characteristics, 2007.</p>
<p>&nbsp;</p>
<p><br />
<strong>2008</strong><br />
As there were several research days left for field trials of the raised-webbing gillnets after the 2007 season, GMRI continued with testing the experimental gear in 2008. In February, sea trials of the experimental gear were conducted aboard the F/V Rachel T (State Reg. # ME685GG) in Massachusetts Bay and the offshore waters of the Gulf of Maine. Standard nets used during this time period differed from the experimental nets with respect to mesh size, vertical mesh count and twine size along with the raised-webbing (Table 2).</p>
<table cellspacing="5" border="0" width="50%">
<tbody>
<tr>
<td>&nbsp;</td>
<td>experimental net</td>
<td>standard net</td>
</tr>
<tr>
<td>individual net length</td>
<td>300'</td>
<td>300'</td>
</tr>
<tr>
<td>net webbing height</td>
<td>12'</td>
<td>12'</td>
</tr>
<tr>
<td><strong>norsel height</strong></td>
<td><strong>48&quot;</strong></td>
<td><strong>0&quot;</strong></td>
</tr>
<tr>
<td><strong>mesh size</strong></td>
<td><strong>7&quot;</strong></td>
<td><strong>6.5&quot;</strong></td>
</tr>
<tr>
<td><strong>vertical mesh count</strong></td>
<td><strong>25</strong></td>
<td><strong>0</strong></td>
</tr>
<tr>
<td><strong>twine size</strong></td>
<td><strong>0.62 mm</strong></td>
<td><strong>0.66 mm</strong></td>
</tr>
<tr>
<td>hanging ratio</td>
<td>1/2</td>
<td>1/2</td>
</tr>
</tbody>
</table>
<p>Table 2. Experimental and standard gillnet gear characteristics, 2008.</p>
<p>&nbsp;</p>
Funding provided by National Oceanic and Atmospheric Administration (NOAA) Award Number: PZ06115
completed
Steve Eayrs
Gulf of Maine Research Institute
350 Commercial Street
Portland
ME
04101
USA
pointOfContact
Shale Rosen
Gulf of Maine Research Institute
207-633-9536
P.O. Box 7549
Portland
ME
04112
USA
srosen@gmri.org
pointOfContact
Michael Pol
Massachusetts Division of Marine Fisheries
508-990-2860x116
1213 Purchase St., 3rd floor
New Bedford
MA
02740
USA
mike.pol@state.ma.us
pointOfContact
Daniel J Salerno
Gulf of Maine Research Institute
401-932-0070
Northeast Fishery Sector V NESTCO, 55 State Street
Narragansett
RI
02882
USA
Nefsector5@gmail.com
pointOfContact
asNeeded
Dataset Version: 3 April 2009
Unknown
cruiseid
haul_num
lat_start
lon_start
lat_end
lon_end
num_expt_nets
num_ctrl_nets
depth_fath
wind_spd_kts
wind_dir
wave_hgt_ft
soak_time
year
day_local
month_local
yrday_local
Gillnet
theme
None, User defined
cruise id
No BCO-DMO term
latitude at start time of measurement
longitude at start time of measurement
latitude at end time of measurement
longitude at end time of measurement
depth
wind_speed_kts
wind_dir
year
day_local
month_local
day of year and decimal time (local time zone)
featureType
BCO-DMO Standard Parameters
Gillnet
instrument
BCO-DMO Standard Instruments
NEC-SE2005-1
service
Deployment Activity
Gulf of Maine
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: Project Development
http://northeastconsortium.org/
Northeast Consortium: Project Development
<p>The Northeast Consortium encourages and funds <strong>cooperative research</strong> and monitoring projects in the Gulf of Maine and Georges Bank that have effective, <strong>equal partnerships</strong> among fishermen, scientists, educators, and marine resource managers.</p>
<p>Priority areas for Northeast Consortium funding include selective fishing-gear research and development. The development of selective fishing gears that enhance gear selectivity, target healthy stocks, reduce bycatch and discard, reduce or eliminate technical barriers to trade, minimize harvest losses, and improve fishing practices. Studies of new and developing fishing gears and technologies aimed at reducing environmental impact is funded under Project Development.</p>
NEC_ProjDev
largerWorkCitation
project
eng; USA
oceans
Gulf of Maine
2009-04-03
Georges Bank, Gulf of Maine
0
BCO-DMO catalogue of parameters from Testing Raised-Webbing Gillnets to Reduce Bycatch of Cod While Targeting Pollock: haul data from F/V Lady Shannon, F/V Rachel T NEC-SE2005-1 in the Gulf of Maine from 2007-2008 (NEC_ProjDev 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/17056.rdf
Name: cruiseid
Units: unknown
Description: <p>cruise identification</p>
http://lod.bco-dmo.org/id/dataset-parameter/17057.rdf
Name: haul_num
Units: unknown
Description: <p>haul number</p>
http://lod.bco-dmo.org/id/dataset-parameter/17058.rdf
Name: lat_start
Units: decimal degrees
Description: <p>latitude at start of net setting</p>
http://lod.bco-dmo.org/id/dataset-parameter/17059.rdf
Name: lon_start
Units: decimal degrees
Description: <p>longitude at start of net setting (west is negative)</p>
http://lod.bco-dmo.org/id/dataset-parameter/17060.rdf
Name: lat_end
Units: decimal degrees
Description: <p>latitude at end of net haul</p>
http://lod.bco-dmo.org/id/dataset-parameter/17061.rdf
Name: lon_end
Units: decimal degrees
Description: <p>longitude at end of haul (negative denotes West)</p>
http://lod.bco-dmo.org/id/dataset-parameter/17062.rdf
Name: num_expt_nets
Units: unknown
Description: <p>number of experimental nets deployed</p>
http://lod.bco-dmo.org/id/dataset-parameter/17063.rdf
Name: num_ctrl_nets
Units: unknown
Description: <p>number of control nets deployed</p>
http://lod.bco-dmo.org/id/dataset-parameter/17064.rdf
Name: depth_fath
Units: fathoms
Description: <p>water depth at net deployment location</p>
http://lod.bco-dmo.org/id/dataset-parameter/17065.rdf
Name: wind_spd_kts
Units: knots
Description: <p>wind speed</p>
http://lod.bco-dmo.org/id/dataset-parameter/17066.rdf
Name: wind_dir
Units: degrees, magnetic
Description: <p>wind direction</p>
http://lod.bco-dmo.org/id/dataset-parameter/17067.rdf
Name: wave_hgt_ft
Units: feet
Description: <p>wave height</p>
http://lod.bco-dmo.org/id/dataset-parameter/17068.rdf
Name: soak_time
Units: unknown
Description: <p>time from net set start to haul end</p>
http://lod.bco-dmo.org/id/dataset-parameter/17069.rdf
Name: year
Units: unknown
Description: <p>year of observation/experiment</p>
http://lod.bco-dmo.org/id/dataset-parameter/17070.rdf
Name: day_local
Units: unknown
Description: <p>day of month, 1-31</p>
http://lod.bco-dmo.org/id/dataset-parameter/17071.rdf
Name: month_local
Units: unknown
Description: <p>month, 1-12</p>
http://lod.bco-dmo.org/id/dataset-parameter/17072.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>
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
2185
https://datadocs.bco-dmo.org/file/vmmwM1oSEEv0mx/raised_gill_meta.csv
raised_gill_meta.csv
Primary data file for dataset ID 3100
download
https://osprey.bco-dmo.org/dataset/3100/data/download
download
onLine
dataset
<p><strong>2007</strong><br />
In January 2007, sea trials of the experimental gillnet gear were completed aboard the F/V Lady Shannon (State Reg. # MS10BM). Two strings of gillnets were constructed of six individual nets each, alternating between the experimental and standard net. The experimental nets were identical in configuration to the standard nets with the exception of the raised-webbing (Table 1). Both strings were set overnight in Massachusetts Bay. Individual species catch weight was recorded to tenths of kilograms separately for the experimental and standard nets.</p>
<table cellspacing="5" border="0" width="50%">
<tbody>
<tr>
<td>&nbsp;</td>
<td>experimental net</td>
<td>standard net</td>
</tr>
<tr>
<td>number of nets per string</td>
<td>3</td>
<td>3</td>
</tr>
<tr>
<td>individual net length</td>
<td>300'</td>
<td>300'</td>
</tr>
<tr>
<td>net webbing height</td>
<td>12'</td>
<td>12'</td>
</tr>
<tr>
<td><strong>norsel height</strong></td>
<td><strong>48&quot;</strong></td>
<td><strong>0&quot;</strong></td>
</tr>
<tr>
<td>mesh size</td>
<td>7&quot;</td>
<td>7&quot;</td>
</tr>
<tr>
<td>vertical mesh count</td>
<td>25</td>
<td>25</td>
</tr>
<tr>
<td>twine size</td>
<td>0.62 mm</td>
<td>0.62 mm</td>
</tr>
<tr>
<td>hanging ratio</td>
<td>1/2</td>
<td>1/2</td>
</tr>
</tbody>
</table>
<p>Table 1. Experimental and standard gillnet gear characteristics, 2007.</p>
<p>&nbsp;</p>
<p><br />
<strong>2008</strong><br />
As there were several research days left for field trials of the raised-webbing gillnets after the 2007 season, GMRI continued with testing the experimental gear in 2008. In February, sea trials of the experimental gear were conducted aboard the F/V Rachel T (State Reg. # ME685GG) in Massachusetts Bay and the offshore waters of the Gulf of Maine. Standard nets used during this time period differed from the experimental nets with respect to mesh size, vertical mesh count and twine size along with the raised-webbing (Table 2).</p>
<table cellspacing="5" border="0" width="50%">
<tbody>
<tr>
<td>&nbsp;</td>
<td>experimental net</td>
<td>standard net</td>
</tr>
<tr>
<td>individual net length</td>
<td>300'</td>
<td>300'</td>
</tr>
<tr>
<td>net webbing height</td>
<td>12'</td>
<td>12'</td>
</tr>
<tr>
<td><strong>norsel height</strong></td>
<td><strong>48&quot;</strong></td>
<td><strong>0&quot;</strong></td>
</tr>
<tr>
<td><strong>mesh size</strong></td>
<td><strong>7&quot;</strong></td>
<td><strong>6.5&quot;</strong></td>
</tr>
<tr>
<td><strong>vertical mesh count</strong></td>
<td><strong>25</strong></td>
<td><strong>0</strong></td>
</tr>
<tr>
<td><strong>twine size</strong></td>
<td><strong>0.62 mm</strong></td>
<td><strong>0.66 mm</strong></td>
</tr>
<tr>
<td>hanging ratio</td>
<td>1/2</td>
<td>1/2</td>
</tr>
</tbody>
</table>
<p>Table 2. Experimental and standard gillnet gear characteristics, 2008.</p>
<p>&nbsp;</p>
Specified by the Principal Investigator(s)
<p>Data collected for this project included gillnet gear characteristics of the standard and experimental nets, location and timing of the sets and the associated catch data in kilograms as well as environmental data for all hauls conducted. Biological sampling included total weights for all species for both the experimental and control nets and fish lengths in centimeters were collected when sampling allowed. A Microsoft Office Access Database was created for data management and will be submitted for inclusion into the Northeast Consortium Fisheries &amp; Ocean Database. (from final report)</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
Gillnet
Gillnet
PI Supplied Instrument Name: Gillnet PI Supplied Instrument Description:gillnets raised off seabed Instrument Name: Gillnet Instrument Short Name:Gillnet Instrument Description: Gillnetting uses curtains of netting that are suspended by a system of floats and weights; they can be anchored to the sea floor or allowed to float at the surface. A gillnet catches fish by their gills because the twine of the netting is very thin, and either the fish does not see the net or the net is set so that it traps the fish. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/65/
Cruise: NEC-SE2005-1
NEC-SE2005-1
F/V Lady Shannon, F/V Rachel T
vessel
NEC-SE2005-1
Shale Rosen
http://northeastconsortium.org/ProjectFileDownload.pm?report_id=936&table=project_report
Report describing NEC-SE2005-1
F/V Lady Shannon, F/V Rachel T
vessel