32376
AFSC/RACE/GAP/McConnaughey: Trawlex BACI-2001-2002 -Video
Data Set
Published / External
32345
AFSC/RACE/GAP/McConnaughey: Trawlex BACI-2001-2002
Project
Completed
The Resource Assessment and Conservation Engineering (RACE) Division of the Alaska Fisheries Science Center (AFSC) conducted a survey in the eastern Bering Sea (EBS) to evaluate short-term impacts of bottom trawls on soft-bottom benthic habitats and to describe the recovery process. This was a multi-year project which follows earlier studies of long-term bottom trawling impacts in the same general region. The study area was within the Crab and Halibut Protection Zone 1 in Bristol Bay (management area 512; approximately latitude 58 degrees north and longitude 160 degrees west. In general, at-sea work was divided into three phases: (1) integrated biological and geological sampling before experimental trawling, (2) experimental trawling and (3) integrated biological and geological sampling after experimental trawling. Survey activities were conducted aboard the 47.2 meter (155 ft) chartered vessel Ocean Explorer. This was a commercial fishing vessel modified to support the research activities. Activity during phase 1 consisted of side scan assessments of seafloor morphology with an interferometric Klein 5410 side scan sonar towfish during night wheel watches, and epifauna trawls and collection of infauna and sediment grabs during daylight hours. All samples from a particular gear were collected in succession, so as to minimize time spent installing and configuring gear during phases (1) and (3). Assessment activities after the impact phase were a repeat of activities prior to experimental trawling.
The research objectives address Congressional mandates (Magnuson-Stevens Fishery Conservation and Management Act of 1996) to investigate potential adverse impacts of fishing gear on essential fish habitats. The primary objectives of this study were to determine if bottom trawls have measurable and significant effects on soft-bottom habitat in the eastern Bering Sea and if so, are there fundamental changes that define a new recovery state.
Loaded by batch 3784, 12-05-2012 13:48
Theme
ISO 19115 Topic Category
geoscientificInformation
Theme
BACI design
Theme
acoustic sediment classification
Theme
side scan sonar
Theme
trawl impact
Spatial
Bering Sea
Alaska Fisheries Science Center
Seattle
WA
USA
Data Set
Video (digital)
unknown
unknown
unknown
Data Steward
2015
Person
McConnaughey, Bob
bob.mcconnaughey@noaa.gov
email
Distributor
2015
Organization
Alaska Fisheries Science Center
AFSC
afsc.webmaster@noaa.gov
7600 Sand Point Way N.E., Building 4
Seattle
WA
98115
USA
(206) 526-4000
(206) 526-4004
https://www.fisheries.noaa.gov/about/alaska-fisheries-science-center
AKFSC Home Page
Online Resource
0700-1700 Pacific Time
Metadata Contact
2015
Person
MC, Metadata Coordinators
AFSC.metadata@noaa.gov
Point of Contact
2012-12-05
Person
McConnaughey, Bob
bob.mcconnaughey@noaa.gov
Ground Condition
-161.365143
-160.805606
57.805388
57.541088
Crab and Halibut Protection Zone 1 in Bristol Bay
Range
2001-06
2002-06
Unclassified
unknown
There are no legal restrictions on access to the data. They reside in public domain and can be freely distributed.
The United States Government shall not be held liable for improper or incorrect use of data described and/or contained herein. These data and related graphics are not legal documents and are not intended to be used as such. The Alaska Fisheries Science Center gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. Spatial information may not meet National Map Accuracy Standards. The information contained in these data is dynamic and may change over time. Original data were compiled from various sources. The data are not better than the original sources from which they were derived. It is the responsibility of the data user to use the data appropriately and consistent within the limitations of geospatial data in general and these data in particular. It is strongly recommended that these data are directly acquired from an Alaska Fisheries Science Center server and not indirectly through other sources which may have changed the data in some way. Although these data have been used (processed) successfully on a computer system at the Alaska Fisheries Science Center, no warranty expressed or implied is made regarding the utility of the data on another system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data.
https://www.ncei.noaa.gov
Not applicable.
unknown
No
Unknown
No
Yes
Yes
Unknown
no delay
NCEI-MD
unknown
IT Security and Contingency Plan for the system establishes procedures and applies to the functions, operations, and resources necessary to recover and restore data as hosted in the Western Regional Support Center in Seattle, Washington, following a disruption.
unknown
gov.noaa.nmfs.inport:32376
Theresa Smith
2016-04-19T12:15:59
SysAdmin InPortAdmin
2024-01-15T12:08:04
2019-05-31
Alaska Fisheries Science Center
AFSC
7600 Sand Point Way N.E., Building 4
Seattle
WA
98115
USA
http://www.afsc.noaa.gov
0700-1700 Pacific Time
1001
Public
No
2019-05-31
1 Year
2020-05-31