Abundance and distribution of bonnethead sharks and other species captured by gillnet near Dauphin Island, Alabama, in 2010-2012

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator:
DISL: Powers Fisheries Ecology Laboratory
Publication_Date:
Unpublished material
Title:
Abundance and distribution of bonnethead sharks and other species captured by gillnet near Dauphin Island, Alabama, in 2010-2012
Geospatial_Data_Presentation_Form:
spreadsheet
Description:
Abstract:
As part of a study to understand the feeding ecology of bonnethead sharks (Sphyrna tiburo) in the northern Gulf of Mexico, gillnets were deployed in 2010-2012 at locations near Dauphin Island, Alabama, where bonnetheads are known to forage. All captured elasmobranchs and teleosts were enumerated and identified to species. For bonnetheads, morphometrics were taken and weight (kg) and sex (maturity level notes for males) were recorded. Other species were measured, weighed, and sexed if time permitted.
Purpose:
To understand the feeding ecology of bonnetheads, how these sharks interact with other upper trophic level teleost consumers, and to see what comprises the diet of bonnetheads in the northern Gulf of Mexico.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date:
20100324
Ending_Date:
20120420
Currentness_Reference:
ground condition
Status:
Progress:
Complete
Maintenance_and_Update_Frequency:
None Planned
Keywords:
Theme:
Theme_Keyword_Thesaurus:
ISO 19115 Topic Categories
Theme_Keyword:
biota
Theme_Keyword:
oceans
Theme:
Theme_Keyword_Thesaurus:
None
Theme_Keyword:
bonnethead sharks
Theme_Keyword:
gillnet survey
Place:
Place_Keyword_Thesaurus:
None
Place_Keyword:
Dauphin Island Sea Lab
Place_Keyword:
DISL
Place_Keyword:
Alabama
Place_Keyword:
Gulf of Mexico
Place_Keyword:
Dauphin Island
Place_Keyword:
Pelican Island
Place_Keyword:
Sand Island
Place_Keyword:
Ono Island
Place_Keyword:
Perdido Pass
Place_Keyword:
Fort Morgan
Place_Keyword:
Katrina Cut
Place_Keyword:
Point Aux Pines
Place_Keyword:
Bird Island
Access_Constraints:
Permission to access these data must be given by Dr. Sean Powers of the Dauphin Island Sea Lab.
Use_Constraints:
Acknowledgment of the Dauphin Island Sea Lab (DISL) and the University of South Alabama (USA) would be appreciated in products developed from these data, and such acknowledgment as is standard for citation and legal practices for data source is expected by users of these data. Users should be aware that comparison with other data sets for the same area from other time periods may be inaccurate due to inconsistencies resulting from changes in mapping conventions, data collection, and computer processes over time. The distributor shall not be liable for improper or incorrect use of these data, based on the description of appropriate/inappropriate uses described in the metadata document. These data are not legal documents and are not to be used as such.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Dauphin Island Sea Lab: Powers Fisheries Ecology Laboratory
Contact_Person:
Andrea Kroetz
Contact_Address:
Address_Type:
mailing and physical
Address:
Dauphin Island Sea Lab
Address:
101 Bienville Boulevard
City:
Dauphin Island
State_or_Province:
AL
Postal_Code:
36528
Contact_Voice_Telephone:
251-861-2141 ext 2384
Contact_Electronic_Mail_Address:
akroetz@disl.org
Data_Set_Credit:
Andrea Kroetz
Native_Data_Set_Environment:
The data are a series of spreadsheets in a Microsoft Excel 2007 workbook.
Back To Index
Data_Quality_Information:
Logical_Consistency_Report:
not applicable
Completeness_Report:
The primary focus of the study was bonnethead sharks. Data about other captured species were recorded as time permitted. Morphometric data are most complete for 2010. For water column data, turbidity was only recorded in 2010.
Lineage:
Methodology:
Methodology_Type:
Field
Methodology_Description:
For each cruise, a 100 m gillnet composed of monofilament with 15-cm stretch mesh was set in a location where bonnethead sharks are frequently captured and known to forage. Environmental parameters (temperature, salinity, depth, and dissolved oxygen) were recorded using a YSI-85. Gillnets were checked every 10 minutes for freshly caught specimens. For each bonnethead caught, morphometrics were taken (pre-caudal, fork, natural, and stretch total lengths in mm), and weight (kg) and sex were recorded. Maturity in males was assessed based on external morphology following Clark and von Schmidt (1965). Other species were measured, weighed, and sexed if time permitted.
Methodology_Citation:
Citation_Information:
Originator:
Clark, E. and K. von Schmidt
Publication_Date:
1965
Title:
Sharks of the Central Gulf coast of Florida.
Geospatial_Data_Presentation_Form:
journal article
Series_Information:
Series_Name:
Bulletin of Marine Science
Issue_Identification:
15
Other_Citation_Details:
p. 13-83
Process_Step:
Process_Description:
See Methodology.
Process_Date:
Unknown
Back To Index
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label:
Gillnet Survey Data
Entity_Type_Definition:
A Microsoft Excel 2007 worksheet containing abundance and distribution data of species caught by gillnet near Dauphin Island, AL from 2010 to 2012.
Entity_Type_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute:
Attribute_Label:
Date
Attribute_Definition:
Date that the specimen was captured.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
3/24/2010
Range_Domain_Maximum:
4/20/2012
Attribute_Units_of_Measure:
month/day/year
Attribute:
Attribute_Label:
Cruise I.D. Number
Attribute_Definition:
An identifier for the cruise in which the specimen was captured.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Unrepresentable_Domain:
The first two letters represent the vessel by which the gillnet was set. The following six numbers are the date. The last part is the gillnet set number. For example, OY041012GN1 means the first gillnet set on April 10, 2012 from vessel OY.
Attribute:
Attribute_Label:
Fish I.D. Number
Attribute_Definition:
An identifier for the specimen captured.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Unrepresentable_Domain:
Each fish captured for a gillnet set was given a number. "H20 Haul" means no fish were captured.
Attribute:
Attribute_Label:
Species
Attribute_Definition:
The common name of the fish that was captured.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:
Atlantic bumper
Enumerated_Domain_Value_Definition:
Chloroscombrus chrysurus
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Atlantic moonfish
Enumerated_Domain_Value_Definition:
Selene setapinnis
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Atlantic sharpnose
Enumerated_Domain_Value_Definition:
Rhizoprionodon terraenovae
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Atlantic stingray
Enumerated_Domain_Value_Definition:
Dasyatis sabina
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Black drum
Enumerated_Domain_Value_Definition:
Pogonias cromis
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Blacktip
Enumerated_Domain_Value_Definition:
Carcharhinus limbatus
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Blue crab
Enumerated_Domain_Value_Definition:
Callinectes sapidus
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Bluefish
Enumerated_Domain_Value_Definition:
Pomatomus saltatrix
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Bonnethead
Enumerated_Domain_Value_Definition:
Sphyrna tiburo
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Bull shark
Enumerated_Domain_Value_Definition:
Carcharhinus leucas
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Cownose ray
Enumerated_Domain_Value_Definition:
Rhinoptera bonasus
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Croaker
Enumerated_Domain_Value_Definition:
Micropogonias undulatus
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Finetooth
Enumerated_Domain_Value_Definition:
Carcharhinus isodon
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Gaftopsail catfish
Enumerated_Domain_Value_Definition:
Bagre marinus
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Gulf menhaden
Enumerated_Domain_Value_Definition:
Brevoortia patronus
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Hardhead catfish
Enumerated_Domain_Value_Definition:
Arius felis
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Harvestfish
Enumerated_Domain_Value_Definition:
Peprilus alepidotus
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Horseshoe crab
Enumerated_Domain_Value_Definition:
Limulidae
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Jack Crevalle
Enumerated_Domain_Value_Definition:
Caranx hippos
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Kemps Ridley
Enumerated_Domain_Value_Definition:
Lepidochelys kempii (sea turtle)
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Ladyfish
Enumerated_Domain_Value_Definition:
Elops saurus
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Lesser electric ray
Enumerated_Domain_Value_Definition:
Narcine brasiliensis
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Manta ray
Enumerated_Domain_Value_Definition:
Manta birostris
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Pompano
Enumerated_Domain_Value_Definition:
Trachinotus carolinus
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Red drum
Enumerated_Domain_Value_Definition:
Sciaenops ocellatus
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Sand trout
Enumerated_Domain_Value_Definition:
Cynoscion arenarius
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
White trout
Enumerated_Domain_Value_Definition:
Cynoscion arenarius
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Scalloped hammerhead
Enumerated_Domain_Value_Definition:
Sphyrna lewini
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Shark sucker
Enumerated_Domain_Value_Definition:
Echeneis naucrates
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Sheepshead
Enumerated_Domain_Value_Definition:
Archosargus probatocephalus
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Southern flounder
Enumerated_Domain_Value_Definition:
Paralichthys lethostigma
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Southern kingfish
Enumerated_Domain_Value_Definition:
Menticirrhus americanus
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Southern stingray
Enumerated_Domain_Value_Definition:
Dasyatis americana
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Spadefish
Enumerated_Domain_Value_Definition:
Chaetodipterus faber
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Spanish mackerel
Enumerated_Domain_Value_Definition:
Scomberomorus maculatus
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Speckled trout
Enumerated_Domain_Value_Definition:
Cynoscion nebulosus
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Spinner shark
Enumerated_Domain_Value_Definition:
Carcharhinus brevipinna
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute:
Attribute_Label:
Status
Attribute_Definition:
Whether the specimen captured was alive or dead.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:
A
Enumerated_Domain_Value_Definition:
Specimen was alive at the time that the gillnet was retrieved.
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
D
Enumerated_Domain_Value_Definition:
Specimen was dead at the time that the gillnet was retrieved.
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute:
Attribute_Label:
PCL (mm)
Attribute_Definition:
Pre-caudal length in millimeters.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
206
Range_Domain_Maximum:
1080
Attribute_Units_of_Measure:
millimeter
Attribute:
Attribute_Label:
FL (mm)
Attribute_Definition:
Fork length in millimeters.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
60
Range_Domain_Maximum:
1307
Attribute_Units_of_Measure:
millimeter
Attribute:
Attribute_Label:
NTL (mm)
Attribute_Definition:
Natural total length in millimeters.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
354
Range_Domain_Maximum:
1390
Attribute_Units_of_Measure:
millimeter
Attribute:
Attribute_Label:
TL (mm)
Attribute_Definition:
Total length in millimeters.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
207
Range_Domain_Maximum:
1500
Attribute_Units_of_Measure:
millimeter
Attribute:
Attribute_Label:
DL (mm)
Attribute_Definition:
Disk length for rays in millimeters.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
160
Range_Domain_Maximum:
936
Attribute_Units_of_Measure:
millimeter
Attribute:
Attribute_Label:
SL or DW (mm)
Attribute_Definition:
Standard length (teleosts with no pre-caudal length) or disk width (rays) in millimeters.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
105
Range_Domain_Maximum:
1050
Attribute_Units_of_Measure:
millimeter
Attribute:
Attribute_Label:
Weight (kg)
Attribute_Definition:
Weight in kilogram.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
0.1
Range_Domain_Maximum:
18.5
Attribute_Units_of_Measure:
kilogram
Attribute:
Attribute_Label:
Sex
Attribute_Definition:
Sex of the specimen captured.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:
F
Enumerated_Domain_Value_Definition:
Specimen is female.
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
M
Enumerated_Domain_Value_Definition:
Specimen is male.
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute:
Attribute_Label:
Stage
Attribute_Definition:
The developmental stage of the specimen captured. Used to assess maturity in male elasmobranchs.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:
M
Enumerated_Domain_Value_Definition:
Specimen is a mature adult.
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
IMM
Enumerated_Domain_Value_Definition:
Specimen is immature.
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
T
Enumerated_Domain_Value_Definition:
Specimen is in a transitional stage of maturity.
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute:
Attribute_Label:
Tag
Attribute_Definition:
An identifier for captured elasmobranchs. Tags were either a yellow roto tag placed in the dorsal fin or a yellow M-tag placed in the body just below the dorsal fin. Each tag has a unique fish ID number along with the Fisheries Ecology Laboratory's fish hotline phone number. People who capture tagged sharks (other marine scientists, recreational or commercial fishermen) may call the hotline with valuable tag recapture data.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Unrepresentable_Domain:
Each tag has a unique fish ID number.
Attribute:
Attribute_Label:
MAP ID
Attribute_Definition:
An identifier for an acoustic tag. Acoustic tags were placed in several bonnethead sharks to track their movements along Alabama's coastline. Tags were deployed in 2010 and 2011.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Unrepresentable_Domain:
Each tag has a unique ID number.
Attribute:
Attribute_Label:
Mesh
Attribute_Definition:
Mesh size of the gillnet used to capture the specimen.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
3" stretch mesh
Range_Domain_Maximum:
6" stretch mesh
Attribute_Units_of_Measure:
inch
Attribute:
Attribute_Label:
Set
Attribute_Definition:
An identifier for the gillnet session of each day.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Unrepresentable_Domain:
A number was given for each time the gillnet was set during the same day.
Attribute:
Attribute_Label:
Comments
Attribute_Definition:
Miscellaneous notes about the specimen.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Unrepresentable_Domain:
Any form of additional information might be in this field.
Detailed_Description:
Entity_Type:
Entity_Type_Label:
Gillnet Survey Abiotic Data
Entity_Type_Definition:
A Microsoft Excel 2007 worksheet containing cruise log information about the gillnet surveys done near Dauphin Island, Alabama from 2010 to 2012.
Entity_Type_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute:
Attribute_Label:
Cruise ID Number
Attribute_Definition:
An identifier for the cruise.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Unrepresentable_Domain:
The first two letters represent the vessel by which the gillnet was set. The following six numbers are the date. The last part is the gillnet set number. For example, OY041012GN1 means the first gillnet set on April 10, 2012 from vessel OY.
Attribute:
Attribute_Label:
Date
Attribute_Definition:
Date of the gillnet session.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
3/24/2010
Range_Domain_Maximum:
4/20/2012
Attribute_Units_of_Measure:
month/day/year
Attribute:
Attribute_Label:
Site
Attribute_Definition:
Name of the location where the gillnet was set.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Unrepresentable_Domain:
Typically the name of an island and geographic part of the island.
Attribute:
Attribute_Label:
Set Start
Attribute_Definition:
The local time in Dauphin Island, Alabama, when gillnet setting began.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
00:00
Range_Domain_Maximum:
23:59
Attribute:
Attribute_Label:
Set End
Attribute_Definition:
The local time in Dauphin Island, Alabama, when gillnet setting ended.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
00:00
Range_Domain_Maximum:
23:59
Attribute:
Attribute_Label:
Haul Start
Attribute_Definition:
The local time in Dauphin Island, Alabama, when hauling the gillnet back to the boat began.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
00:00
Range_Domain_Maximum:
23:59
Attribute:
Attribute_Label:
Haul End
Attribute_Definition:
The local time in Dauphin Island, Alabama, when hauling the gillnet back to the boat ended.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
00:00
Range_Domain_Maximum:
23:59
Attribute:
Attribute_Label:
Soak Time
Attribute_Definition:
The total amount of time that the gillnet was in the water, between set start and haul end.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
0
Range_Domain_Maximum:
2
Attribute_Units_of_Measure:
hour
Attribute:
Attribute_Label:
Latitude
Attribute_Definition:
Latitude of the location of the gillnet.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
30
Range_Domain_Maximum:
30.3
Attribute_Units_of_Measure:
Usually decimal degrees
Attribute:
Attribute_Label:
Longitude
Attribute_Definition:
Longitude of the location of the gillnet.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
-88.4
Range_Domain_Maximum:
-88.0
Attribute_Units_of_Measure:
Usually decimal degrees. Locations west of Greenwich, England and east of the International Date Line are negative.
Attribute:
Attribute_Label:
Depth (M)
Attribute_Definition:
Total depth of the water column where the gillnet was set. Could be in a range from starting the net setting to ending the net setting depths.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
0
Range_Domain_Maximum:
15
Attribute_Units_of_Measure:
usually meter, sometimes feet
Attribute:
Attribute_Label:
Bottom Type
Attribute_Definition:
The substrate of the bottom at the site where the gillnet was set.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:
Sand
Enumerated_Domain_Value_Definition:
Bottom was covered with sand.
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Mud
Enumerated_Domain_Value_Definition:
Bottom was covered with mud.
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Enumerated_Domain_Value:
Seagrass
Enumerated_Domain_Value_Definition:
Bottom was covered with seagrass.
Enumerated_Domain_Value_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute:
Attribute_Label:
Temp (C)
Attribute_Definition:
Temperature of the water column while the gillnet was in the water.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
20
Range_Domain_Maximum:
34
Attribute_Units_of_Measure:
Celsius
Attribute:
Attribute_Label:
Salinity (ppt)
Attribute_Definition:
Salinity of the water column while the gillnet was in the water.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
7
Range_Domain_Maximum:
33
Attribute:
Attribute_Label:
D.O. (Mg/L)
Attribute_Definition:
Dissolved oxygen in the water column where the gillnet was set.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
2
Range_Domain_Maximum:
12
Attribute_Units_of_Measure:
milligram per liter
Attribute:
Attribute_Label:
Turb (CM)
Attribute_Definition:
Turbidity of the water column where the gillnet was set, as measured with a secchi disk.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
1
Range_Domain_Maximum:
350
Attribute_Units_of_Measure:
centimeter
Attribute:
Attribute_Label:
Set
Attribute_Definition:
An identifier for the gillnet session of each day.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Unrepresentable_Domain:
A number was given for each time the gillnet was set during the same day.
Attribute:
Attribute_Label:
Mesh
Attribute_Definition:
Mesh size of the gillnet used to capture specimens.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
3" stretch mesh
Range_Domain_Maximum:
6" stretch mesh
Attribute_Units_of_Measure:
inch
Attribute:
Attribute_Label:
Net Length
Attribute_Definition:
Length of the gillnet used to capture specimens.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
100
Range_Domain_Maximum:
100
Attribute_Units_of_Measure:
meter
Attribute:
Attribute_Label:
Comments
Attribute_Definition:
Miscellaneous notes about the gillnet session.
Attribute_Definition_Source:
DISL: Powers Fisheries Ecology Laboratory
Attribute_Domain_Values:
Unrepresentable_Domain:
Any form of additional information might be in this field.
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Metadata_Reference_Information:
Metadata_Date:
20130222
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Dauphin Island Sea Lab
Contact_Position:
Data Management Specialist
Contact_Address:
Address_Type:
mailing and physical
Address:
101 Bienville Blvd.
City:
Dauphin Island
State_or_Province:
Al
Postal_Code:
36528
Country:
USA
Contact_Voice_Telephone:
251-861-2141
Contact_Electronic_Mail_Address:
metadata@disl.org
Hours_of_Service:
8-5:00 CST
Contact_Instructions:
Please email the metadata specialist for further information.
Metadata_Standard_Name:
FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version:
FGDC-STD-001-1998
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