Full View
Normal View
|
|
Fine-scale Ray habitat use, distribution and abundance, satellite telemetry and aerial survey, Northern Gulf of Mexico, 2008 to 2012Improving Deepwater Horizon Risk Assessment for Large Pelagic Rays: Global Scale Positioning Via Satellite Telemetry
|
||||||||||||||||||||
Suggested Citation:
Ajemian, Matthew, and Sean Powers (2013) Fine-scale Ray habitat use, distribution and abundance, satellite telemetry and aerial survey, Northern Gulf of Mexico, 2008 to 2012. Distributed by: Gulf of Mexico Research Initiative Information and Data Cooperative (GRIIDC), Harte Research Institute, Texas A&M University-Corpus Christi. doi:10.7266/N7PN93KF
Abstract:
The dataset contains distribution and abundance data for rays in the Gulf of Mexico collected through aerial surveys and satellite telemetry. Aerial survey data includes the date, time, latitude and longitude where rays were observed, and number and species of rays observed during 32 surveys which took place from 2008 to 2011. Satellite telemetry data contains data for 11 cownose rays that were fitted with Smart Positioning or Temperature satellite transmitters between March and November 2011. The satellite telemetry data includes information about the cownose rays that were tracked, including the location they were caught, disk length, disk width, weight, sex, the number of days that the satellite tag remained attached to the ray, the calculated total distance traveled by each ray while fitted with the tag, and the calculated mean and maximum rate of movement for each ray while fitted with the satellite tag. The data from ARGOS that was used to calculate total distance and rates of movement for the tagged cownose rays is included in this data set and includes location date, satellite that received the signal, latitude, longitude, number of messages received and data ARGOS used to calculate the error ellipse for each location.
Purpose:
To assess potential impacts of DWH incident on rays by comparing distribution and abundance of rays from aerial surveys in completed in 2008-2009 with those completed in 2010-2011 and to delineate fine scale habitat use and movement patterns of cownose rays in the Gulf of Mexico using satellite telemetry.
Theme Keywords:
Elasmobranch, satellite telemetry, aerial survey, Rhinoptera bonasus, Manta birostris, Aetobatus narinari, spotted eagle ray, cownose ray, manta ray, Shelf
File Format:
xlsx, pdf
Filename:
Y1.x068.000-0001-RayDataset.zip (1.4 MB)
Dataset Downloads:
38
Fine-scale Ray habitat use, distribution and abundance, satellite telemetry and aerial survey, Northern Gulf of Mexico, 2008 to 2012
Identification Information
Distribution Information
Metadata Maintenance Information
Metadata:
File identifier:
Y1.x068.000-0001-metadata.xml
Language:
eng; USA
Character set:
Character set code:
utf8
Hierarchy level:
Scope code:
dataset
Metadata author:
Responsible party:
Individual name:
Matthew Ajemian
Organisation name:
Florida Atlantic University / Harbor Branch Oceanographic Institute
Position name:
Assistant Research Professor
Contact info:
Contact:
Phone:
Telephone:
Voice:
7722422730
Facsimile:
Address:
Address:
Delivery point:
5600 US 1 North
City:
Fort Pierce
Administrative area:
Florida
Postal code:
34946
Country:
USA
Electronic mail address:
majemian@fau.edu
Role:
Role code:
pointOfContact
Date stamp:
2018-08-11T13:43:25+00:00
Metadata standard name:
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
Metadata standard version:
ISO 19115-2:2009(E)
Dataset URI:
https://data.gulfresearchinitiative.org/metadata/Y1.x068.000:0001
Return To Index
Identification info:
Data identification:
Citation:
Citation:
Title:
Fine-scale Ray habitat use, distribution and abundance, satellite telemetry and aerial survey, Northern
Gulf of Mexico, 2008 to 2012
Alternate title:
Date:
Date:
Date:
2013-12-10
Date type:
Date type code:
publication
Abstract:
The dataset contains distribution and abundance data for rays in the Gulf of Mexico collected through aerial
surveys and satellite telemetry. Aerial survey data includes the date, time, latitude and longitude where
rays were observed, and number and species of rays observed during 32 surveys which took place from 2008 to
2011. Satellite telemetry data contains data for 11 cownose rays that were fitted with Smart Positioning or
Temperature satellite transmitters between March and November 2011. The satellite telemetry data includes
information about the cownose rays that were tracked, including the location they were caught, disk length,
disk width, weight, sex, the number of days that the satellite tag remained attached to the ray, the
calculated total distance traveled by each ray while fitted with the tag, and the calculated mean and
maximum rate of movement for each ray while fitted with the satellite tag. The data from ARGOS that was used
to calculate total distance and rates of movement for the tagged cownose rays is included in this data set
and includes location date, satellite that received the signal, latitude, longitude, number of messages
received and data ARGOS used to calculate the error ellipse for each location.
Purpose:
To assess potential impacts of DWH incident on rays by comparing distribution and abundance of rays from
aerial surveys in completed in 2008-2009 with those completed in 2010-2011 and to delineate fine scale
habitat use and movement patterns of cownose rays in the Gulf of Mexico using satellite telemetry.
Status:
Progress code:
completed
Point of contact:
Responsible party:
Individual name:
Matthew Ajemian
Organisation name:
Florida Atlantic University / Harbor Branch Oceanographic Institute
Position name:
Assistant Research Professor
Contact info:
Contact:
Phone:
Telephone:
Voice:
7722422730
Facsimile:
Address:
Address:
Delivery point:
5600 US 1 North
City:
Fort Pierce
Administrative area:
Florida
Postal code:
34946
Country:
USA
Electronic mail address:
majemian@fau.edu
Role:
Role code:
pointOfContact
Descriptive keywords:
Keywords:
Keyword:
Elasmobranch
Keyword:
satellite telemetry
Keyword:
aerial survey
Keyword:
Rhinoptera bonasus
Keyword:
Manta birostris
Keyword:
Aetobatus narinari
Keyword:
spotted eagle ray
Keyword:
cownose ray
Keyword:
manta ray
Keyword:
Shelf
Type:
Keyword type code:
theme
Descriptive keywords:
Keywords:
Keyword:
Mississippi
Keyword:
Alabama
Keyword:
northern Gulf of Mexico
Type:
Keyword type code:
place
Language:
eng; USA
Topic category:
Topic category code:
biota
Topic category:
Topic category code:
oceans
Extent:
Extent:
Geographic element:
Geographic bounding box:
West bound longitude:
-96.948
East bound longitude:
-41.187
South bound latitude:
19.946
North bound latitude:
40.339
Geographic element:
BoundingPolygon:
Polygon:
Polygon:
Outer boundary:
Linear ring:
gml:posList:
39.887 -50.099 40.072 -50.945 40.038 -51.65 40.055 -52.082 39.626 -52.525 39.484 -52.625 39.406
-52.732 39.186 -54.747 39.05 -54.615 38.701 -52.639 38.679 -52.635 38.824 -53.424 39.004
-54.571 39.087 -54.679 39.36 -54.948 39.824 -55.295 39.656 -56.705 39.085 -58.433 38.024
-59.26 37.201 -59.297 36.506 -59.011 36.969 -59.689 37.241 -60.406 37.272 -60.468 37.296
-60.501 38.388 -61.363 39.28 -61.474 39.66 -62.571 39.197 -64.298 38.366 -65.011 38.32 -65.071
38.036 -65.629 38.245 -66.435 38.585 -67.672 37.738 -68.414 37.255 -69.28 34.418 -68.582 37.32
-69.356 37.787 -71 37.733 -71.203 36.696 -73.156 35.534 -74.532 33.367 -76.3 32.622 -77.226
32.565 -77.286 32.522 -77.34 32.067 -78.33 31.032 -79.781 29.762 -80.19 28.545 -80.03 27.574
-79.987 26.709 -79.993 26.68 -79.994 26.469 -80.043 26.154 -80.032 25.621 -80.038 25.569
-80.046 25.115 -80.148 24.79 -80.309 24.757 -80.33 24.455 -80.656 24.448 -80.664 24.203
-81.276 24.045 -81.723 23.939 -82.324 23.942 -82.396 24.118 -83.688 24.141 -83.781 24.151
-83.804 24.507 -84.381 24.531 -84.398 24.905 -84.584 24.993 -84.577 25.493 -84.507 26.282
-84.487 26.458 -84.679 26.699 -85.11 26.818 -85.476 27.089 -86.1 27.069 -86.273 27.028 -86.21
27.071 -86.316 27.186 -86.586 27.118 -86.126 27.126 -85.768 27.35 -85.244 27.532 -85.037
27.833 -85.068 28.09 -85.135 28.473 -85.335 28.669 -85.591 28.685 -85.835 28.712 -86.096
28.863 -86.555 28.922 -86.893 28.69 -86.79 28.596 -86.781 28.56 -86.808 28.432 -86.894 28.237
-86.479 27.975 -86.116 27.962 -86.106 27.768 -86.096 27.578 -86.034 27.501 -86.496 27.452
-86.843 27.475 -86.988 27.543 -87.187 27.4 -87.68 27.384 -87.749 27.402 -87.692 27.413 -87.667
27.565 -87.237 27.573 -87.048 27.546 -86.893 27.51 -86.861 27.5 -86.551 27.633 -86.136 27.647
-86.131 27.952 -86.132 28.252 -86.604 28.304 -86.91 28.221 -86.975 28.041 -86.768 27.941
-86.629 27.911 -86.639 27.896 -86.65 28.035 -86.784 28.119 -86.898 27.982 -86.982 27.99
-86.993 28.007 -87.006 28.202 -87.046 28.245 -87.143 28.2 -87.232 28.096 -87.195 28.058
-87.195 28.075 -87.205 28.102 -87.217 28.197 -87.239 28.207 -87.274 28.015 -87.303 27.979
-87.309 27.863 -87.337 27.882 -87.36 28.05 -87.344 28.222 -87.361 28.19 -87.382 28.131 -87.44
28.132 -87.482 28.214 -87.595 28.276 -87.609 28.156 -87.774 28.155 -87.803 28.117 -87.926
27.925 -88.106 27.825 -88.006 27.74 -87.708 27.736 -87.685 27.721 -87.678 27.783 -88.04 27.834
-88.03 27.911 -88.127 27.915 -88.13 27.928 -88.116 28.115 -87.942 28.275 -87.928 28.538
-87.784 28.435 -88.14 28.43 -88.17 28.208 -88.545 28.106 -88.588 27.9 -88.715 27.69 -88.814
27.681 -88.821 27.675 -88.825 27.501 -88.872 27.342 -88.829 27.314 -88.828 27.119 -88.939
27.09 -88.912 27.092 -88.848 27.178 -88.763 27.186 -88.743 27.316 -88.501 27.328 -88.363
27.323 -88.357 27.179 -88.732 27.089 -88.841 26.995 -88.979 27.485 -88.889 27.697 -88.913
27.908 -88.716 28.098 -88.61 28.192 -88.567 28.216 -88.549 28.426 -88.2 28.695 -88.207 28.725
-88.216 28.729 -88.207 28.883 -87.406 28.949 -87.586 29.102 -88.058 29.087 -88.086 29.175
-88.616 29.174 -88.904 28.875 -88.979 28.797 -89.062 28.777 -89.104 28.788 -89.241 28.77
-89.612 28.775 -90.254 28.754 -90.288 28.661 -90.714 28.599 -90.566 28.563 -90.563 28.545
-90.61 28.494 -90.907 28.495 -90.928 28.498 -90.94 28.591 -91.206 28.599 -91.522 28.403
-91.581 28.395 -91.584 28.342 -92.1 28.278 -92.767 28.355 -92.85 29.051 -93.82 28.958 -94.017
28.894 -94.165 28.854 -94.299 28.732 -94.789 28.597 -94.9 28.544 -95.285 28.253 -96.094 28.221
-96.128 28.03 -96.365 27.955 -96.427 28.052 -96.929 28.192 -96.948 28.312 -96.534 28.385
-96.327 28.411 -96.305 28.434 -96.258 28.493 -96 28.5 -95.797 28.534 -95.56 28.538 -95.536
28.539 -95.498 28.752 -95.102 29.09 -94.414 29.177 -94.431 29.45 -94.484 29.461 -94.49 29.491
-94.438 29.565 -94.053 29.587 -93.618 29.585 -93.59 29.561 -93.458 29.545 -93.453 29.506
-93.419 29.45 -93.41 29.404 -93.323 29.384 -93.223 29.39 -92.987 29.358 -93.008 29.148 -92.815
29.055 -92.719 29.046 -92.756 29.005 -92.794 28.988 -92.789 28.927 -92.823 28.884 -92.802
28.899 -92.733 28.9 -92.684 28.889 -92.627 28.86 -92.604 28.952 -92.577 28.993 -92.459 28.997
-92.436 28.992 -92.388 28.923 -91.751 28.824 -91.277 28.812 -91.242 28.818 -90.637 28.898
-90.29 28.935 -89.994 28.931 -89.923 28.866 -89.445 28.902 -89.184 28.973 -89.178 29 -89.197
29.006 -89.193 28.989 -88.976 29.059 -88.951 29.155 -88.935 29.207 -88.948 29.234 -88.963
29.269 -89.237 29.236 -88.968 29.404 -89.042 29.481 -89.162 29.522 -89.206 29.523 -89.208
29.538 -89.22 29.538 -89.219 29.533 -89.213 29.4751 -88.9883 29.522 -88.9894 29.6218 -88.9918
29.635 -88.9989 29.602 -89.018 29.596 -89.044 29.634 -89.021 29.707 -89.0028 29.7143 -89.004
29.7167 -89.0042 29.7283 -89.0049 29.7611 -89.0061 29.808 -89.0078 29.9157 -88.9892 29.907
-89.07 29.811 -89.148 29.632 -89.218 29.562 -89.259 29.513 -89.327 29.617 -89.273 29.633
-89.26 29.798 -89.165 29.912 -89.076 29.913 -89.074 29.9255 -88.99 29.9284 -88.99 29.9427
-88.989 30.0986 -88.9887 30.08 -89.249 30.102 -88.999 30.187 -89.017 30.271 -90.016 30.243
-89.556 30.189 -89.026 30.304 -89.026 30.367 -89.038 30.362 -89.154 30.36 -89.178 30.323 -89.2
30.337 -89.251 30.358 -89.367 30.403 -89.374 30.723 -89.41 30.404 -89.356 30.404 -89.319
30.383 -89.084 30.419 -89.116 30.437 -89.109 30.439 -89.096 30.436 -89.054 30.459 -89.028
30.487 -88.986 30.494 -88.976 30.473 -88.966 30.484 -88.888 30.48 -88.852 30.477 -88.893
30.459 -88.908 30.445 -88.929 30.445 -88.843 30.442 -88.685 30.54 -88.66 30.513 -88.655 30.478
-88.658 30.468 -88.636 30.483 -88.518 30.497 -88.414 30.547 -88.419 30.52 -88.381 30.571
-88.353 30.744 -88.209 30.56245 -88.34841 30.405 -88.326 30.285 -88.303 30.302 -88.042 30.276
-87.988 30.27 -87.717 30.267 -87.607 30.304 -87.489 30.29 -87.458 30.1534 -87.3114 30.064
-87.154 30.014 -86.592 30.0238 -87.3202 29.967 -87.322 29.8946 -87.3224 29.8415 -87.4159
29.753 -87.532 29.518 -87.507 29.504 -87.516 29.315 -87.465 29.321 -87.534 29.323 -87.608
29.265 -87.647 29.197 -87.584 29.106 -87.424 29.086 -87.278 29.034 -87.013 29.001 -86.801
29.008 -86.757 28.665 -85.573 28.483 -85.334 28.456 -85.321 28.159 -85.142 28.127 -85.131
27.877 -85.054 27.761 -85.018 27.745 -85.015 27.555 -85.024 27.535 -85.029 27.511 -85.044
27.361 -85.227 27.348 -85.244 27.336 -85.264 27.122 -85.723 27.107 -85.768 27.109 -85.799
27.104 -86.111 26.886 -85.548 26.717 -85.127 26.711 -85.104 26.634 -84.929 26.56 -84.799
26.424 -84.578 26.3 -84.438 26.215 -84.437 26.056 -84.448 25.885 -84.464 25.847 -84.447 25.817
-84.437 25.771 -84.434 25.737 -84.436 25.726 -84.461 25.723 -84.467 25.467 -84.504 24.98
-84.57 24.547 -84.399 24.136 -83.742 24.065 -83.068 23.947 -82.366 24.112 -82.085 24.151
-82.088 24.178 -82.073 24.181 -82.07 24.309 -81.676 24.342 -81.762 24.342 -81.734 24.496
-81.111 24.511 -81.091 24.501 -81.04 25.131 -80.19 26.451 -80.052 27.5 -80.039 29.627 -80.213
29.68 -80.213 29.852 -80.189 30.94 -79.866 31.132 -79.725 31.191 -79.673 32.014 -78.575 32.721
-77.153 33.281 -76.457 33.318 -76.405 33.328 -76.392 34.154 -75.871 35.493 -74.768 36.627
-73.314 36.764 -73.055 37.745 -71.312 37.835 -70.875 37.394 -69.375 37.822 -68.4 38.595
-67.676 38.616 -67.587 38.106 -65.595 39.208 -64.339 39.225 -64.323 39.277 -64.197 39.66
-62.576 39.664 -62.554 39.681 -62.463 39.322 -61.48 38.244 -61.18 36.998 -59.737 37.132
-59.334 37.961 -59.3 38.076 -59.272 39.097 -58.426 39.191 -58.33 39.655 -56.767 39.692 -56.598
39.742 -56.279 39.888 -55.596 39.9 -55.374 39.58 -54.866 39.27 -54.417 39.478 -52.725 39.841
-52.383 40.281 -52.099 40.339 -51.169 39.847 -49.831 39.718 -49.545 19.946 -41.187 39.887
-50.099
Temporal element:
Temporal extent:
Extent:
Time period:
Description:
ground condition
Begin date:
2008-07-17
End date:
2012-03-26
Supplemental Information:
{Excel File: MAjemian_BP_SGER_aerial _survey_data_rays.xlsx [Survey Design Worksheet.] PROJECT: project for
which the survey was funded; YEAR: year; MONTH: Month where 1 = January and 12 = December; DATE: MM/DD/YYYY;
ROUTE: designates the three separate routes used in each survey see supplementary material for more
information; TRANSECTS: the number of North-South transects flown and their distance in nautical miles;
DISTANCE: total distance of transects flown in nautical miles; WEATHER: General weather conditions if
reported; ANGLE?: Angle (in degrees) over with observer scanned from viewing window on aircraft; ALTITUDE1:
Altitude (feet) of the aircraft from which the aerial survey was completed; SWATH_MI: Swath of observer
sighting coverage in miles; SWATH_KM: Swath of observer sighting in coverage in kilometers; SWATH_NM: Swath
of observer sighting coverage in nautical miles. [Transects Tables Worksheet.] Date: MM/DD/YYYY; ROUTE:
designates the three separate routes used in each survey see supplementary material for more information;
Transect: the transect that the observation took place on; ID: Unique ID generated by combining Julian Date
and transect number; Length (mi): Length of transect in miles; Length (km): Length of transect in
kilometers; Altitude (ft): Altitude (feet) of the aircraft from which the aerial survey was complete; Swath
(mi): swath of observer sighting coverage in miles; Swath (km) swath of observer sighting coverage in
kilometers; Area (sqmi): Area covered by transect in square miles; Area (sqkm): Area covered by transect in
square kilometers;: [Observations Worksheet.] Time: PROJECT: project for which the survey was funded; YEAR:
year; MONTH: Month where 1 = January and 12 = December; DATE: MM/DD/YYYY; TIME: ROUTE: designates the three
separate routes used in each survey see supplementary material; TRANSECT: the Transect that the observation
took place on; TIME: 24 – Hour Military Time; SPECIES: Species of Ray Observed; COUNT: Count of individuals
for the species at the given time and space; COUNT1: Count of individuals by given time and space and
default value of 1 when no value was given for an actual count; COUNTCODE: Binary text code given to data to
indicate whether a count was actually given (COUNT) or if a count was not given and a default value of 1 was
used (DEFAULT); LAT: Latitude in Decimal Degrees; LONG: Longitude in Decimal Degrees; DEPTH_M: Bottom depth
of water (in meters) at sighting location of rays} {Excel File: MAjemian_BP-SGER_SatelliteData.xlsx
[TagTable Worksheet] AnimalID: Animal identification number represents the Nth deployment of a SPOT5
transmitter, 4 attempts made in previous studies therefore starts at the 5th deployment; Species: CNR =
cownose ray; Tag Date: MM/DD/YYYY; Season: SP = spring, SU = summer, F = fall; Location: Generalized
Descriptive Location along Alabama coast where the animal was caught, where PB = Pelican Bay, WEDI = West
End of Dauphin Island, PI-FB = Pelican Island Front Beach, Public Beach = Public Beach at Dauphin Island,
KC-FB = Katrina Cut Front Beach between west and east ends of Dauphin Island, Perdido = Perdido Beach on the
Alabama-Florida border; DW: Disk Width, the distance between pectoral fin (wing) tips measured ventrally in
millimeters from the animal laid flat on a measuring board; DL: Disk Length, the distance from snout to
cloaca measured in millimeters from the animal laid flat on a measuring board; W: weight in kilograms; Sex:
M= Male, F=Female; PTT ID: Platform Transmitter Terminal equivalent to transmitter ID; External Tag ID:
External tag identification number; LAT: Latitude of the release location of the animal after SPOT5 attached
in decimal degrees; LON: Longitude of the release location of the animal after SPOT5 attached in decimal
degrees; Est. Detach Date: Date (MM/DD/YYYY) which SPOT5 tag was determine to have detached from the animal;
Days at Liberty: Time (days) between release and estimated tag detach date; Total Distance: Cumulative Sum
of step lengths (distance between successive position estimates) for position that had location class of 1
to 3 where location class is an estimation of location accuracy where 3 is the most accurate (±250 meters)
and 1 is the least accurate (± 500 to 1500 meters); Mean ROM: Rate of Movement ( total distance
traveled/number of days at liberty) in kilometers per day; Max ROM: Maximum rate of movement, the maximum
rate at which the ray moved between two successive position estimates in kilometers per day; Total Distance:
Mean daily Sum of step lengths (distance between successive position estimates) for position that had
location class of 1 to 3 where location class is an estimation of location accuracy where 3 is the most
accurate (±250 meters ) and 1 is the least accurate (± 500 to 1500 meters); [Tag Data worksheet] PTT:
Platform Transmitter Terminal equivalent to transmitter ID; Satellite: Satellite used to detect PTT where
MB= METOP-B, NM = NOAA-N’, MA=METOP-A, NN=NOAA-19, NM = NOAA-17, NL=NOAA-16 and NK=NOAA-15; Location date:
location date and time of signal in GMT, MM/DD/YYYY; Location class: an estimation of location accuracy
where 3 is the most accurate (±250 meters ) and 1 is the least accurate (± 500 to 1500 meters); Latitude: In
decimal degrees; Longitude: In decimal degrees; Number of messages: Number of messages received from the
SPOT5 to the PTT at location and time; Nbr of messages >-120 dB: Number of messages received from the SPOT5
tag to the PTT greater than -120 decibels; Best Level: The best signal strength, ARGOS DIAG format file, in
decibels; Pass Duration: duration of the satellite pass over the PTT in minutes; Error Radius: error
associated with the position estimate in meters in the shape of an ellipse; Semi-major axis: Length in
meters of the semi major axis of the position error ellipse; Semi-minor axis: Length in meters of the semi
minor axis of the position error ellipse; Ellipse orientation: expressed as an angle with the North going
towards the East, the orientation of the error ellipse; GDOP: the Geometric dilution of precision is a
measure of the effect of the geometry of the satellite beacon configuration on location accuracy, as a
general rule a smaller value yields a more accurate position; Message date: date the message was received
via satellite. |A. Aerial Survey Data Sets Dauphin Island Sea Lab Red Drum Aerial Survey (2008-2010) Red
Drum Aerial Survey: Aerial transect surveys were conducted with a Piper Apache PA-23 aircraft. The design
covered the northern central Gulf of Mexico from the shoreline to 20 nmi south (29°51′N) on eastern
transects and out to 60 nmi south (29°19′N) on western transects to cover the Chandeleur Islands. The
longitudinal coverage extended from the Chandeleur Islands in the west (88°59′W) to Pensacola, FL, in the
east (87°19′W) (13 surveys). Two observers wearing polarized sunglasses conducted the survey by scanning the
water to identify organisms from an average altitude of ~213m. When fish were spotted, the observer singled
to the pilot to circle the object to confirm species identification, record GPS location, and take
photographs of the fish school. These aerial surveys lasted approximately 8 hours and were conducted in two
4-hr flights with a fuel stop in between flights. (from Powers et al., 2012. Age composition and
distribution of red drum (Sciaenops ocellatus) in offshore waters of the north central Gulf of Mexico: an
evaluation of a stock under a federal harvest moratorium. Fish. Bull. 110: 283-292.) Dauphin Island Sea Lab
Sargassum Aerial Survey (2010-2012) Sargassum Aerial Survey: These are strip-transect aerial surveys. Ten
equally spaced transects were established (the 9th transect in the eastern section was dropped during the
project due to time constraints). Each transect started at the shoreline and extended perpendicularly to
approximately 100 km offshore. Ten aerial surveys (5/28, 6/4, 6/9, 6/16, 6/23, 7/14, 7/21, 8/18, 9/8, 10/20)
were conducted after the DWH in 2010. Follow up flights were also flown in 2011 (7 flights, 7/22, 7/26,
8/17, 9/9, 9/15, 9/21, 9/28). A twin prop Piper Geronimo was used for each flight and flown between 215–300
m elevation depending on ceiling restrictions imposed by the unified command and Federal Aviation
Administration (FAA) during the DWH explosion. Surveys were conducted on days where sea state was equal to
or less than 4 on the Beaufort wind force scale. Two observers were seated in the rear of the aircraft and
recorded the latitude and longitude (via GPS) of targets within 85° under the plane wing. The altitude for
each aerial survey varied according to changing FAA restrictions; therefore, the detectable area ranged from
2.44–3.48 km, depending on the flight altitude. (from: Powers et al. 2013. Novel pathways for injury from
offshore oil spills: Direct, sublethal and indirect effects of the Deepwater Horizon oil spill on pelagic
Sargassum communities. PLoS ONE 8(9).) Analyses of aerial surveys included: 1) before and after DWH incident
densities 2) before and after DWH incident distribution 3) Associations of rays with oil/gas platforms B.
Satellite Telemetry Satellite linked radio transmitters (platform transmitter terminals or PTTs) were used
to monitor the geographic movements of 11 cownose rays in the Gulf of Mexico in 2011 and 2012. Transmission
from PTTs were detected and processed by the ARGOS Data Collection and Location System (ARGOS DCLS).
Wildlife Computers Smart Positioning or Temperature (SPOT) 5 tags were used to transmit animal location at
the surface to orbiting ARGOS satellites. Due to detachment issues in the past, we attempted to tether the
SPOT5 tags to the rays using a variety of attachment techniques. The first was a modification of a
monofilament suture around the ray’s tail, which proved to retain fo
⋮
rs||Satellite Telemetry: SPOT5 transmitter accurate to within 150 meters, error calculated by ARGOS|
Return To Index
Distribution info:
Distribution:
Distributor:
Distributor:
Distributor contact:
Responsible party:
Organisation name:
Gulf of Mexico Research Initiative Information and Data Cooperative (GRIIDC)
Contact info:
Contact:
Phone:
Telephone:
Voice:
3618253604
Address:
Address:
Delivery point:
6300 Ocean Drive
City:
Corpus Christi
Administrative area:
TX
Postal code:
78412
Country:
USA
Electronic mail address:
griidc@gomri.org
Online Resource:
Online Resource:
Linkage:
URL:
https://data.gulfresearchinitiative.org
Role:
Role code:
distributor
Distributor format:
Format:
Name:
xlsx, pdf
Version:
inapplicable
File decompression technique:
zip
Distributor transfer options:
Digital transfer options:
Transfer size:
1.3995
Online:
Online Resource:
Linkage:
URL:
https://data.gulfresearchinitiative.org/data/Y1.x068.000:0001
Protocol:
https
Return To Index
Metadata maintenance:
Maintenance information:
Maintenance and update frequency:
unknown
Maintenance note:
This ISO metadata record was automatically generated from information provided to GRIIDC for dataset:
Y1.x068.000:0001 on 2019-02-17T14:09:41+00:00
Return To Index