http://lod.bco-dmo.org/id/dataset/3088
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
2009-04-14
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Comparison of Catch and Bycatch with the Addition of Escape Holes to Otter Trawl Nets in the Northeast Shrimp Fishery from F/V Ocean Reporter NEC-BL2003-2 in the Gulf of Maine from January to March 2005 (NEC_ProjDev project)
2006-07-01
publication
2006-07-01
revision
BCO-DMO Linked Data URI
2006-07-01
creation
http://lod.bco-dmo.org/id/dataset/3088
Dr Alan Michael
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: Michael, A. (2006) Comparison of Catch and Bycatch with the Addition of Escape Holes to Otter Trawl Nets in the Northeast Shrimp Fishery from F/V Ocean Reporter NEC-BL2003-2 in the Gulf of Maine from January to March 2005 (NEC_ProjDev project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version final) Version Date 2006-07-01 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/3088 [access date]
Comparison Of Catch And Bycatch With The Addition Of Escape Holes To Otter Trawl Nets In The Northeast Shrimp Fishery Dataset Description: <p><strong>Comparison Of Catch And Bycatch With The Addition Of Escape Holes To Otter Trawl Nets In The Northeast Shrimp Fishery</strong></p>
<p>Project Leader:&nbsp; Bill Lee, F/V Ocean Reporter</p>
<p><a href="http://northeastconsortium.org/ProjectFileDownload.pm?report_id=682&amp;table=project_report" target="_blank">Final report</a></p>
<p>Small escape holes made from cut pieces of 6-inch PVC pipe were sewn into the net in front of the Nordmore grate in a standard shrimp net used in the northeast fishery. Preliminary tests had provided video of fish escaping through these holes during active trawling. A series of tows, with and without these holes in the nets were made from the vessels the Ocean Reporter and the Marina Rose. Seven other participating boats from Rockport, Massachusetts and Hampton, New Hampshire towed standard gear at the same time and in the same general area. Catch and bycatch was weighed and identified to provide a direct quantitative comparison of the percentage bycatch with and without the escape holes.</p>
<p>Mean catch rate for vessels using nets without rings was 235.5 lbs shrimp/hr with a bycatch rate of 16.7 lbs/hr or 6.6%. For the two vessels with escape rings installed in the nets, the catch rate was 228.6 lbs shrimp/hr with a bycatch of 27.5 lbs/hr or 10.7 %. The data was confounded by the large variation in bycatch rates among vessels and the limited number of tows. The experimental vessels encountered schools of pelagics (whiting or herring) on some days which heavily influenced results. One vessel, the Marina Rose appeared to show a significant reduction in bycatch rate from 19.4% without the rings to 9.4% with the escape rings installed. The other vessel, the Ocean Reporter had a bycatch rate of 7.5% without rings and 11.3% with the rings. A high catch of pelagics on several days during the tests with rings influenced results from this vessel.</p>
<p>A further complication to the study was a discrepancy in bycatch rates between vessels operating out of Hampton, New Hampshire and those out of Rockport, Masachusetts. The New Hampshire vessels had lower overall bycatch rates, which could be due to the area trawled, or performance of the gear. A similar study in the previous year had documented a lower catch of pelagics by the New Hampshire vessels. Future studies should involve a larger number of tows from one or two vessels.</p> Methods and Sampling: <p>Rings from white PVC pipe were cut and installed in a standard otter trawl used to catch shrimp (Figure 1). This net was used in the normal commercial fishing mode. For each trawl (typically 2 - 3 hours) the location, depth, speed and duration of tow was recorded. At the end of each tow, the catch (lbs) of shrimp was evaluated and the bycatch identified, and weighed. Other vessels performed commercial shrimp operations in the same area at the same time using the standard otter trawl currently used by the fleet. Captains were offered a nominal fee to report catch and bycatch in the same manner. The data was converted into catch per unit effort and a comparison made, between the two trawls on catch rates and relative amounts and types of bycatch. A biologist met with respective captains to provide them with data sheets and instructions on the collection of data. These vessels operated in the same general area of Ipswich Bay and, in many cases, on the same day(s) as the Ocean Reporter.</p>
<p>Most tows were made in an area off Rockport Massachusetts at depths ranging from 56 to 76 meters. Three vessels out of Hampton, New Hampshire reported their catch from a little further north for a total of 13 boat/days. Average tow duration and speed for the fleet using the otter trawl was 2.2 hrs at 2.5 knots. On the Ocean Reporter, the trawl was towed at speeds from 2.5 - 3.0 knots for an average of 1.6 hours.</p>
Funding provided by National Oceanic and Atmospheric Administration (NOAA) Award Number: unknown NEC_ProjDev NOAA
completed
Dr Alan Michael
(978) 525-2195
5 Field Road
Magnolia
MA
01930
ADMichael@adelphia.net
pointOfContact
asNeeded
Dataset Version: final
Unknown
modification
date_local
boat_name
no_of_tows
time_towed
wt_shrimp
wt_shrimp_hr
wt_bycatch
wt_bycatch_hr
pct_bycatch
wt_groundfish
wt_pelagic_fish
wt_other_species
theme
None, User defined
No BCO-DMO term
date_local
ship
time of day
weight
featureType
BCO-DMO Standard Parameters
NEC-BL2003-2
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
2006-07-01
Georges Bank, Gulf of Maine
0
BCO-DMO catalogue of parameters from Comparison of Catch and Bycatch with the Addition of Escape Holes to Otter Trawl Nets in the Northeast Shrimp Fishery from F/V Ocean Reporter NEC-BL2003-2 in the Gulf of Maine from January to March 2005 (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/17139.rdf
Name: modification
Units: unknown
Description: <p>experimental treatment</p>
http://lod.bco-dmo.org/id/dataset-parameter/17140.rdf
Name: date_local
Units: unknown
Description: <p>local date</p>
http://lod.bco-dmo.org/id/dataset-parameter/17141.rdf
Name: boat_name
Units: unknown
Description: <p>vessel name</p>
http://lod.bco-dmo.org/id/dataset-parameter/17142.rdf
Name: no_of_tows
Units: unknown
Description: <p>number of tows taken during cruise</p>
http://lod.bco-dmo.org/id/dataset-parameter/17143.rdf
Name: time_towed
Units: hours
Description: <p>duration of tow</p>
http://lod.bco-dmo.org/id/dataset-parameter/17144.rdf
Name: wt_shrimp
Units: pounds
Description: <p>weight of shrimp</p>
http://lod.bco-dmo.org/id/dataset-parameter/17145.rdf
Name: wt_shrimp_hr
Units: pounds per hour
Description: <p>weight of shrimp caught per hour</p>
http://lod.bco-dmo.org/id/dataset-parameter/17146.rdf
Name: wt_bycatch
Units: pounds
Description: <p>weight of bycatch</p>
http://lod.bco-dmo.org/id/dataset-parameter/17147.rdf
Name: wt_bycatch_hr
Units: pounds per hour
Description: <p>weight of bycatch per hour</p>
http://lod.bco-dmo.org/id/dataset-parameter/17148.rdf
Name: pct_bycatch
Units: %
Description: <p>percent of bycatch in the sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/17149.rdf
Name: wt_groundfish
Units: pounds
Description: <p>weight of groundfish in sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/17150.rdf
Name: wt_pelagic_fish
Units: pounds
Description: <p>weight of pelagic fish in the sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/17151.rdf
Name: wt_other_species
Units: pounds
Description: <p>weight of other fish in sample</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
3865
https://datadocs.bco-dmo.org/file/2GGXpZzSZ1Dwk4/shrimp_by.csv
shrimp_by.csv
Primary data file for dataset ID 3088
download
https://osprey.bco-dmo.org/dataset/3088/data/download
download
onLine
dataset
<p>Rings from white PVC pipe were cut and installed in a standard otter trawl used to catch shrimp (Figure 1). This net was used in the normal commercial fishing mode. For each trawl (typically 2 - 3 hours) the location, depth, speed and duration of tow was recorded. At the end of each tow, the catch (lbs) of shrimp was evaluated and the bycatch identified, and weighed. Other vessels performed commercial shrimp operations in the same area at the same time using the standard otter trawl currently used by the fleet. Captains were offered a nominal fee to report catch and bycatch in the same manner. The data was converted into catch per unit effort and a comparison made, between the two trawls on catch rates and relative amounts and types of bycatch. A biologist met with respective captains to provide them with data sheets and instructions on the collection of data. These vessels operated in the same general area of Ipswich Bay and, in many cases, on the same day(s) as the Ocean Reporter.</p>
<p>Most tows were made in an area off Rockport Massachusetts at depths ranging from 56 to 76 meters. Three vessels out of Hampton, New Hampshire reported their catch from a little further north for a total of 13 boat/days. Average tow duration and speed for the fleet using the otter trawl was 2.2 hrs at 2.5 knots. On the Ocean Reporter, the trawl was towed at speeds from 2.5 - 3.0 knots for an average of 1.6 hours.</p>
Specified by the Principal Investigator(s)
<p>The data was summarized at ADM Associates, converted to catch-per-hour towed, and examined for differences in catch rates of shrimp and bycatch. Bycatch was separated into three categories; groundfish (hake, skates, flounders etc), pelagic fish (herring, whiting) and others (invertebrates such as starfish, crabs and scallops)</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
Cruise: NEC-BL2003-2
NEC-BL2003-2
F/V Ocean Reporter
vessel
NEC-BL2003-2
Bill Lee
http://northeastconsortium.org/ProjectFileDownload.pm?report_id=682&table=project_report
Report describing NEC-BL2003-2
F/V Ocean Reporter
vessel