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POD! Fish- DFG Bay Study_otter and midwater trawl, ringnet sampling 1980-2006
NCEAS 12192: Fleishman: Ecosystem analysis of pelagic organism declines in the Upper San Francisco Estuary
National Center for Ecological Analysis and Synthesis
Steve
Slater
California Department of Fish and Game (DFG)
sslater@dfg.ca.gov
Marissa
Bauer
Steve
Slater
associatedParty
Kathy
Hieb
Co-owner
2008-04-01
The Bay Study was initiated to determine the effects of freshwater outflow on the distribution and abundance fish, caridean shrimp, and Cancer crabs of San Francisco Estuary. This data set contains otter and midwater trawl, and ringnet sampling from 1980-2006.
Three types of sampling surveys were conducted: open water, beach seine, and ringnet. The open water survey began in February 1980. It collected samples monthly from 35 stations from South Bay to the Sacramento River at Sherman Island and the San Joaquin River at Antioch. Seven stations were added in 1988, 4 in 1991, and 6 in 1994. Data from the additional stations were only used for channel vs. shoal comparisons.
The beach seine survey started in August 1980 at 27 shore stations located primarily in San Francisco and San Pablo bays but also with stations in the delta at Antioch and Sherman Island. To reduce expenditures the beach seine survey ended in December 1986.
In May 1982, a monthly ringnet survey for crabs began at 9 stations in San Francisco and San Pablo bays and in Carquinez Strait. In 1990, sampling frequency was restricted to July to December and 3 new stations were added. In 1994, 5 stations were added and the 4 stations south of Angel Island were dropped.
no restrictions
http://www.delta.dfg.ca.gov/baydelta/monitoring/baystudy.asp
digital
1980
2006
Within San Francisco estuary, to just west of Alcatraz Island, south to immediately south of the Dumbarton Bridge, east to the mouth of Three Mile Slough on the Sacramento River and immediately upstream of the Antioch Bridge on the San Joaquin River and north into Grizzly Bay.
122.3833
122.3833
38.0833
38.0833
Steve
Slater
California Department of Fish and Game (DFG)
sslater@dfg.ca.gov
Bay Study Crab 1980-2006 Catch Matrix_All Stations-1.csv
Bay Study Crab 1980-2006 Catch Matrix_All Stations-1.csv
1204677
1
#x0A
column
,
ecogrid://knb/mbauer.62.1
Year
Year of survey
yyyy
Survey
1-12, usually the same as the month sampled
1-12, usually the same as the month sampled
Date
Sample date
mm-dd-yy
0
Station
Bay Study station number
Bay Study station number
Series
1 = original stations, 2 = stations added Dec 1987, 3 = stations added in 1991, 4 = stations added in 1994
1
original stations
2
stations added Dec 1987
3
stations added in 1991
4
stations added in 1994
Bay
Bay
Bay
ChanShoal
1 = Channel, 2 = Shoal
1 = Channel, 2 = Shoal
Depth
Maximum depth in feet
Foot_US
natural
Secchi
Secchi disk reading in cm
centimeter
natural
SalinBott
Salinity (ppt) at lowest recorded depth
Salinity (ppt) at lowest recorded depth
TempBott
Temperature (°C) at lowest recorded depth
celsius
natural
EC Bottom
Estimated Bottom Electrical Conductivity (µS/cm) at 25° Celsius
siemen
natural
Net
1 = midwater trawl and 2 = otter trawl
1 = midwater trawl and 2 = otter trawl
Tow
1, 54, 55, 56, 57 = all valid for fish; one tow per station per net
1, 54, 55, 56, 57 = all valid for fish; one tow per station per net
Time
Time of sample, 24-hour clock
hh:mm
Tide
1=flood current, 2=ebb current, 3=low slack, 4=high slack
1=flood current, 2=ebb current, 3=low slack, 4=high slack
Direction
1=tow with current, 2=tow against current, 3=neither (slack current)
1=tow with current, 2=tow against current, 3=neither (slack current)
Duration
Total time net was fishing, in minutes; for OT, time on bottom, for MWT, time from when net was set to when the doors were at the stern of the boat
mm:ss
Distance
Distance towed by otter trawl in nautical miles, used for calculation of tow area
nauticalMile
natural
TowArea
Estimated area sampled in m² by the otter trawl (OT)
squareMeter
natural
CMAGIS
Dungeness crab
1253041428872
1253041428888
1253041429013
CGRACI
graceful rock crab, Cancer gracilis
crab species
CANTEN
Pacific rock crab Cancer antennarius
crab species
CPRODU
red rock crab Cancer productus
crab species
ESINEN
Chinese mitten crab Eriocheir sinensis
crab species
13374
Bay Study Crab 1980-2006 Catch Matrix_All Stations_species codes.csv
Bay Study Crab 1980-2006 Catch Matrix_All Stations_species codes.csv
1833
1
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ecogrid://knb/mbauer.63.1
AlphaCode
AlphaCode
AlphaCode
Common Name
Common Name
Common Name
Phylum
Organism information
Organism information
Class
Organism information
Organism information
Order
Organism information
Organism information
Family
Organism information
Organism information
Genus
Organism information
Organism information
Species
Organism information
Organism information
Scientific Name
Organism information
Organism information
19
Bay Study MWT 1980-2006 Catch Matrix_All Stations.csv
Bay Study MWT 1980-2006 Catch Matrix_All Stations.csv
3569625
1
#x0A
column
,
ecogrid://knb/mbauer.64.1
Year
Year of survey
yyyy
Survey
1-12, usually the same as the month sampled
1-12, usually the same as the month sampled
Station
Bay Study station number
Bay Study station number
Date
Sample date
mm-dd-yyyy
0
Time
Time of sample, 24-hour clock
hh:mm
TempSurf
Temperature (°C) for first meter of water column
celsius
natural
SalinSurf
Salinity (ppt) for first meter of water column
Salinity (ppt) for first meter of water column
EC Top
Estimated Surface Electrical Conductivity (µS/cm) at 25° Celsius
siemen
natural
Secchi
Secchi disk reading in cm
centimeter
natural
Depth
Maximum depth in feet
Foot_US
natural
ChanShoal
1 = Channel, 2 = Shoal
1 = Channel, 2 = Shoal
Net
1 = midwater trawl and 2 = otter trawl
1 = midwater trawl and 2 = otter trawl
Tow
1, 54, 55, 56, 57 = all valid for fish; one tow per station per net
1, 54, 55, 56, 57 = all valid for fish; one tow per station per net
Series
1 = original stations, 2 = stations added Dec 1987, 3 = stations added in 1991, 4 = stations added in 1994
1 = original stations, 2 = stations added Dec 1987, 3 = stations added in 1991, 4 = stations added in 1994
TotalMeter
Flow meter counts for the midwater trawl, used for calculation of tow volume
Flow meter counts for the midwater trawl, used for calculation of tow volume
TowVolume
Estimated area sampled in m³ by the midwater trawl (MWT)
cubicMeter
natural
Age0 American shad
Number of organisms caught
Number of organisms caught
American shad
Number of organisms caught
Number of organisms caught
arrow goby
Number of organisms caught
Number of organisms caught
barred surfperch
Number of organisms caught
dimensionless
natural
bat ray
Number of organisms caught
Number of organisms caught
natural
bay goby
Number of organisms caught
Number of organisms caught
natural
bay pipefish
Number of organisms caught
Number of organisms caught
natural
big skate
Number of organisms caught
Number of organisms caught
natural
black bullhead
Number of organisms caught
Number of organisms caught
natural
black crappie
Number of organisms caught
Number of organisms caught
natural
black perch
Number of organisms caught
Number of organisms caught
natural
black rockfish
Number of organisms caught
Number of organisms caught
natural
bluegill
Number of organisms caught
Number of organisms caught
natural
bonyhead sculpin
Number of organisms caught
Number of organisms caught
natural
brown bullhead
Number of organisms caught
Number of organisms caught
natural
brown rockfish
Number of organisms caught
Number of organisms caught
natural
brown smoothhound
Number of organisms caught
Number of organisms caught
natural
calico surfperch
Number of organisms caught
Number of organisms caught
natural
California grunion
Number of organisms caught
Number of organisms caught
natural
California halibut
Number of organisms caught
Number of organisms caught
natural
California lizardfish
Number of organisms caught
Number of organisms caught
natural
California tonguefish
Number of organisms caught
Number of organisms caught
natural
chameleon goby
Number of organisms caught
Number of organisms caught
natural
channel catfish
Number of organisms caught
Number of organisms caught
natural
cheekspot goby
Number of organisms caught
Number of organisms caught
natural
Chinook salmon
Number of organisms caught
Number of organisms caught
natural
coho salmon
Number of organisms caught
Number of organisms caught
natural
common carp
Number of organisms caught
Number of organisms caught
natural
Age0 delta smelt
Number of organisms caught
Number of organisms caught
natural
delta smelt
Number of organisms caught
Number of organisms caught
natural
diamond turbot
Number of organisms caught
Number of organisms caught
natural
dwarf perch
Number of organisms caught
Number of organisms caught
natural
English sole
Number of organisms caught
Number of organisms caught
natural
eulachon
Number of organisms caught
Number of organisms caught
natural
goldfish
Number of organisms caught
Number of organisms caught
natural
green sturgeon
Number of organisms caught
Number of organisms caught
natural
green sunfish
Number of organisms caught
Number of organisms caught
natural
hardhead
Number of organisms caught
Number of organisms caught
natural
herring (shads) (Unid)
Number of organisms caught
Number of organisms caught
natural
jack mackerel
Number of organisms caught
Number of organisms caught
natural
jacksmelt
Number of organisms caught
Number of organisms caught
natural
kelp greenling
Number of organisms caught
Number of organisms caught
natural
largemouth bass
Number of organisms caught
Number of organisms caught
natural
leopard shark
Number of organisms caught
Number of organisms caught
natural
lingcod
Number of organisms caught
Number of organisms caught
natural
Age0 longfin smelt
Number of organisms caught
Number of organisms caught
natural
longfin smelt
Number of organisms caught
Number of organisms caught
natural
Mississippi silverside
Number of organisms caught
Number of organisms caught
natural
night smelt
Number of organisms caught
Number of organisms caught
natural
northern anchovy
Number of organisms caught
Number of organisms caught
natural
Pacific barracuda
Number of organisms caught
Number of organisms caught
natural
Pacific electric ray
Number of organisms caught
Number of organisms caught
natural
Pacific herring
Number of organisms caught
Number of organisms caught
natural
Pacific lamprey
Number of organisms caught
Number of organisms caught
natural
Pacific pompano
Number of organisms caught
Number of organisms caught
natural
Pacific sand lance
Number of organisms caught
Number of organisms caught
natural
Pacific sanddab
Number of organisms caught
Number of organisms caught
natural
Pacific sardine
Number of organisms caught
Number of organisms caught
natural
Pacific staghorn sculpin
Number of organisms caught
Number of organisms caught
natural
Pacific tomcod
Number of organisms caught
Number of organisms caught
natural
pile perch
Number of organisms caught
Number of organisms caught
natural
plainfin midshipman
Number of organisms caught
Number of organisms caught
natural
prickly sculpin
Number of organisms caught
Number of organisms caught
natural
pumpkinseed
Number of organisms caught
Number of organisms caught
natural
queenfish
Number of organisms caught
Number of organisms caught
natural
rainwater killifish
Number of organisms caught
Number of organisms caught
natural
redear sunfish
Number of organisms caught
Number of organisms caught
natural
redtail surfperch
Number of organisms caught
Number of organisms caught
natural
river lamprey
Number of organisms caught
Number of organisms caught
natural
rockfish (Unid)
Number of organisms caught
Number of organisms caught
natural
rubberlip seaperch
Number of organisms caught
Number of organisms caught
natural
Sacramento pikeminnow
Number of organisms caught
Number of organisms caught
natural
Sacramento sucker
Number of organisms caught
Number of organisms caught
natural
sand sole
Number of organisms caught
Number of organisms caught
natural
shimofuri goby
Number of organisms caught
Number of organisms caught
natural
shiner perch
Number of organisms caught
Number of organisms caught
natural
shokihaze goby
Number of organisms caught
Number of organisms caught
natural
showy snailfish
Number of organisms caught
Number of organisms caught
natural
silver surfperch
Number of organisms caught
Number of organisms caught
natural
speckled sanddab
Number of organisms caught
Number of organisms caught
natural
spiny dogfish
Number of organisms caught
Number of organisms caught
natural
Age0 splittail
Number of organisms caught
Number of organisms caught
natural
splittail
Number of organisms caught
Number of organisms caught
natural
starry flounder
Number of organisms caught
Number of organisms caught
natural
steelhead
Number of organisms caught
Number of organisms caught
natural
Age0 striped bass
Number of organisms caught
Number of organisms caught
natural
striped bass
Number of organisms caught
Number of organisms caught
natural
sunfish (Unid)
Number of organisms caught
Number of organisms caught
natural
surf smelt
Number of organisms caught
Number of organisms caught
natural
thornback
Number of organisms caught
Number of organisms caught
natural
threadfin shad
Number of organisms caught
Number of organisms caught
natural
threespine stickleback
Number of organisms caught
Number of organisms caught
natural
thresher shark
Number of organisms caught
Number of organisms caught
natural
topsmelt
Number of organisms caught
Number of organisms caught
natural
tule perch
Number of organisms caught
Number of organisms caught
natural
wakasagi
Number of organisms caught
Number of organisms caught
natural
walleye surfperch
Number of organisms caught
Number of organisms caught
natural
white catfish
Number of organisms caught
Number of organisms caught
natural
white croaker
Number of organisms caught
Number of organisms caught
natural
white seabass
Number of organisms caught
Number of organisms caught
natural
white seaperch
Number of organisms caught
Number of organisms caught
natural
white sturgeon
Number of organisms caught
Number of organisms caught
natural
whitebait smelt
Number of organisms caught
Number of organisms caught
natural
yellowfin goby
Number of organisms caught
Number of organisms caught
natural
12614
Bay Study Otter Trawl 1980-2006 Catch Matrix_All Stations.csv
Bay Study OT 1980-2006 OT Catch Matrix_All Stations.csv
4581218
1
#x0A
column
,
ecogrid://knb/mbauer.65.1
Year
Year of survey
yyyy
Survey
1-12, usually the same as the month sampled
1-12, usually the same as the month sampled
Station
Bay Study station number
Bay Study station number
Date
Sample date
mm-dd-yyyy
0
Time
Time of sample, 24-hour clock
hh:mm
TempBott
Temperature (°C) at lowest recorded depth
celsius
natural
SalinBott
Salinity (ppt) at lowest recorded depth
Salinity (ppt) at lowest recorded depth
EC Bottom
Estimated Bottom Electrical Conductivity (µS/cm) at 25° Celsius
siemen
natural
Secchi
Secchi disk reading in cm
centimeter
natural
Depth
Maximum depth in feet
Foot_US
natural
ChanShoal
1 = Channel, 2 = Shoal
1 = Channel, 2 = Shoal
Net
1 = midwater trawl and 2 = otter trawl
1 = midwater trawl and 2 = otter trawl
Tow
1, 54, 55, 56, 57 = all valid for fish; one tow per station per net
1, 54, 55, 56, 57 = all valid for fish; one tow per station per net
Series
1 = original stations, 2 = stations added Dec 1987, 3 = stations added in 1991, 4 = stations added in 1994
1 = original stations, 2 = stations added Dec 1987, 3 = stations added in 1991, 4 = stations added in 1994
Distance
Distance towed by otter trawl in nautical miles, used for calculation of tow area
nauticalMile
natural
TowArea
Estimated area sampled in m² by the otter trawl (OT)
squareMeter
natural
Duration
Total time net was fishing, in minutes; for OT, time on bottom, for MWT, time from when net was set to when the doors were at the stern of the boat
mm:ss
American shad
Count of organism
Count of organism
natural
arrow goby
Count of organism
Count of organism
natural
barred surfperch
Count of organism
Count of organism
natural
bat ray
Count of organism
Count of organism
natural
bay goby
Count of organism
Count of organism
natural
bay pipefish
Count of organism
Count of organism
natural
big skate
Count of organism
Count of organism
natural
bigscale logperch
Count of organism
Count of organism
natural
black bullhead
Count of organism
Count of organism
natural
black crappie
Count of organism
Count of organism
natural
black perch
Count of organism
Count of organism
natural
black rockfish
Count of organism
Count of organism
natural
blue catfish
Count of organism
Count of organism
natural
blue rockfish
Count of organism
Count of organism
natural
bluegill
Count of organism
dimensionless
natural
bocaccio
Count of organism
Count of organism
natural
bonyhead sculpin
Count of organism
Count of organism
natural
broadnose sevengill shark
Count of organism
Count of organism
natural
brown bullhead
Count of organism
Count of organism
natural
brown Irish lord
Count of organism
Count of organism
natural
brown rockfish
Count of organism
Count of organism
natural
brown smoothhound
Count of organism
Count of organism
natural
buffalo sculpin
Count of organism
Count of organism
natural
cabezon
Count of organism
Count of organism
natural
calico surfperch
Count of organism
Count of organism
natural
California halibut
Count of organism
Count of organism
natural
California lizardfish
Count of organism
Count of organism
natural
California tonguefish
Count of organism
Count of organism
natural
chameleon goby
Count of organism
Count of organism
natural
channel catfish
Count of organism
Count of organism
natural
cheekspot goby
Count of organism
Count of organism
natural
Chinook salmon
Count of organism
Count of organism
natural
C-O sole
Count of organism
Count of organism
natural
common carp
Count of organism
Count of organism
natural
curlfin sole
Count of organism
Count of organism
natural
delta smelt
Count of organism
Count of organism
natural
diamond turbot
Count of organism
Count of organism
natural
Dover sole
Count of organism
Count of organism
natural
dwarf perch
Count of organism
Count of organism
natural
English sole
Count of organism
Count of organism
natural
eulachon
Count of organism
Count of organism
natural
goldfish
Count of organism
Count of organism
natural
green sturgeon
Count of organism
Count of organism
natural
green sunfish
Count of organism
Count of organism
natural
hitch
Count of organism
Count of organism
natural
hornyhead turbot
Count of organism
Count of organism
natural
hybrid sole (forkline)
Count of organism
Count of organism
natural
jacksmelt
Count of organism
Count of organism
natural
kelp greenling
Count of organism
Count of organism
natural
lamprey (Unid)
Count of organism
Count of organism
natural
largemouth bass
Count of organism
Count of organism
natural
leopard shark
Count of organism
Count of organism
natural
lingcod
Count of organism
Count of organism
natural
Age0 longfin smelt
Count of organism
Count of organism
natural
longfin smelt
Count of organism
Count of organism
natural
longjaw mudsucker
Count of organism
Count of organism
natural
minnow (Unid)
Count of organism
Count of organism
natural
Mississippi silverside
Count of organism
Count of organism
natural
mussel blenny
Count of organism
Count of organism
natural
night smelt
Count of organism
Count of organism
natural
onespot fringehead
Count of organism
Count of organism
natural
Pacific electric ray
Count of organism
Count of organism
natural
Pacific herring
Count of organism
Count of organism
natural
Pacific lamprey
Count of organism
Count of organism
natural
Pacific pompano
Count of organism
Count of organism
natural
Pacific sand lance
Count of organism
Count of organism
natural
Pacific sanddab
Count of organism
Count of organism
natural
Pacific sardine
Count of organism
Count of organism
natural
Pacific staghorn sculpin
Count of organism
Count of organism
natural
Pacific tomcod
Count of organism
Count of organism
natural
padded sculpin
Count of organism
Count of organism
natural
pile perch
Count of organism
Count of organism
natural
plainfin midshipman
Count of organism
Count of organism
natural
prickly sculpin
Count of organism
Count of organism
natural
pygmy poacher
Count of organism
Count of organism
natural
queenfish
Count of organism
Count of organism
natural
rainbow seaperch
Count of organism
Count of organism
natural
rainwater killifish
Count of organism
Count of organism
natural
red Irish lord
Count of organism
Count of organism
natural
redear sunfish
Count of organism
Count of organism
natural
redtail surfperch
Count of organism
Count of organism
natural
river lamprey
Count of organism
Count of organism
natural
rockfish (Unid)
Count of organism
Count of organism
natural
rubberlip seaperch
Count of organism
Count of organism
natural
Sacramento pikeminnow
Count of organism
Count of organism
natural
Sacramento sucker
Count of organism
Count of organism
natural
saddleback gunnel
Count of organism
Count of organism
natural
sand sole
Count of organism
Count of organism
natural
scalyhead sculpin
Count of organism
Count of organism
natural
shimofuri goby
Count of organism
Count of organism
natural
shiner perch
Count of organism
Count of organism
natural
Age0 shokihaze goby
Count of organism
Count of organism
natural
shokihaze goby
Count of organism
Count of organism
natural
shovelnose guitarfish
Count of organism
Count of organism
natural
showy snailfish
Count of organism
Count of organism
natural
silver surfperch
Count of organism
Count of organism
natural
slipskin snailfish
Count of organism
Count of organism
natural
snailfish (Unid)
Count of organism
Count of organism
natural
speckled sanddab
Count of organism
Count of organism
natural
spiny dogfish
Count of organism
Count of organism
natural
Age0 splittail
Count of organism
Count of organism
natural
splittail
Count of organism
Count of organism
natural
spotfin surfperch
Count of organism
Count of organism
natural
spotted cusk-eel
Count of organism
Count of organism
natural
Age0 starry flounder
Count of organism
Count of organism
natural
starry flounder
Count of organism
Count of organism
natural
Age0 striped bass
Count of organism
Count of organism
natural
striped bass
Count of organism
Count of organism
natural
striped seaperch
Count of organism
Count of organism
natural
surf smelt
Count of organism
Count of organism
natural
surfperch (Unid)
Count of organism
Count of organism
natural
thornback
Count of organism
Count of organism
natural
threadfin shad
Count of organism
Count of organism
natural
threespine stickleback
Count of organism
Count of organism
natural
topsmelt
Count of organism
Count of organism
natural
tubesnout
Count of organism
Count of organism
natural
tule perch
Count of organism
Count of organism
natural
vermillion rockfish
Count of organism
Count of organism
natural
wakasagi
Count of organism
Count of organism
natural
walleye surfperch
Count of organism
Count of organism
natural
western brook lamprey
Count of organism
Count of organism
natural
western mosquitofish
Count of organism
Count of organism
natural
white catfish
Count of organism
Count of organism
natural
white croaker
Count of organism
Count of organism
natural
white seabass
Count of organism
Count of organism
natural
white seaperch
Count of organism
Count of organism
natural
white sturgeon
Count of organism
Count of organism
natural
whitebait smelt
Count of organism
Count of organism
natural
yellow snake eel
Count of organism
Count of organism
natural
Age0 yellowfin goby
Count of organism
Count of organism
natural
yellowfin goby
Count of organism
Count of organism
natural
yellowtail rockfish
Count of organism
Count of organism
natural
13373
Bay Study Shrimp 1980-2005 Catch Matrix_All Stations.csv
Bay Study Shrimp 1980-2005 Catch Matrix_All Stations.csv
1296148
1
#x0A
column
,
ecogrid://knb/mbauer.66.1
Year
Year of survey
yyyy
Survey
1-12, usually the same as the month sampled
1-12, usually the same as the month sampled
Date
Sample date
mm-dd-yyyy
0
Station
Bay Study station number
Bay Study station number
Series
1 = original stations, 2 = stations added Dec 1987, 3 = stations added in 1991, 4 = stations added in 1994
1 = original stations, 2 = stations added Dec 1987, 3 = stations added in 1991, 4 = stations added in 1994
Bay
Bay
Bay
ChanShoal
1 = Channel, 2 = Shoal
1 = Channel, 2 = Shoal
Depth
Maximum depth in feet
Foot_US
natural
Secchi
Secchi disk reading in cm
centimeter
natural
SalinBott
Salinity (ppt) at lowest recorded depth
Salinity (ppt) at lowest recorded depth
TempBott
Temperature (°C) at lowest recorded depth
celsius
natural
EC Bottom
Estimated Bottom Electrical Conductivity (µS/cm) at 25° Celsius
siemen
natural
Net
1 = midwater trawl and 2 = otter trawl
1 = midwater trawl and 2 = otter trawl
Tow
1, 54, 55, 56, 57 = all valid for fish; one tow per station per net
1, 54, 55, 56, 57 = all valid for fish; one tow per station per net
Time
Time of sample, 24-hour clock
hh:mm
Tide
1=flood current, 2=ebb current, 3=low slack, 4=high slack
1=flood current, 2=ebb current, 3=low slack, 4=high slack
Direction
1=tow with current, 2=tow against current, 3=neither (slack current)
1=tow with current, 2=tow against current, 3=neither (slack current)
TowDuration
Total time net was fishing, in minutes; for OT, time on bottom, for MWT, time from when net was set to when the doors were at the stern of the boat
mm:ss
Distance
Distance towed by otter trawl in nautical miles, used for calculation of tow area
nauticalMile
natural
TowArea
Estimated area sampled in m² by the otter trawl (OT)
squareMeter
natural
Cf
Crangon franciscorum California bay shrimp
Crangon franciscorum California bay shrimp
Cn
Crangon nigricauda blacktail bay shrimp
Crangon nigricauda blacktail bay shrimp
Cnm
Crangon nigromaculata blackspotted bay shrimp
Crangon nigromaculata blackspotted bay shrimp
Em
Exopalaemon modestus Siberian prawn
Exopalaemon modestus Siberian prawn
Hs
Heptacarpus stimpsoni Stimpson coastal shrimp
Heptacarpus stimpsoni Stimpson coastal shrimp
Ls
Lissocrangon stylirostris smooth bay shrimp
Lissocrangon stylirostris smooth bay shrimp
Pm
Palaemon macrodactylus oriental shrimp
Palaemon macrodactylus oriental shrimp
Misc
Misc includes all minor species not assigned to a field in the matrix.
Misc includes all minor species not assigned to a field in the matrix.
Total
Total count
Total count
12732
Number of organisms caught
parts per thousand (ppt)
Count of organism