Eric P. Bjorkstedt1,2, Roxanne Robertson2, Bill Peterson3
1Southwest
Fisheries Science Center
2Humboldt State University
3Northwest Fisheries Science Center
Trinidad Head Line
“Invasion of the Blob”
(or, “Collapse of the Cool Coastal Corridor”)
Calculate the anomaly (15 pts.)
Mid-shelf near bottom (60 m)
water mass characteristics
Grey = 2008-2013; Black = 2014; Open = 2015
33.5
33.0
32.5
salinity (psu)
34.0
• Warmer than usual starting July 2014
• Blob waters present late fall-winter 2015
• Upwelling in early 2015
8
10
12
temperature (C)
14
Mid-shelf near bottom (60 m)
water mass characteristics
18
Grey = 2008-2013; Black = 2014; Open = 2015
2012
2013
2014
2014
2015
34.0
14
33.5
33.0
salinity (psu)
12
10
32.5
8
T at Trinidad Wharf
16
• Warmer than usual starting July
• Blob waters present late fall-winter 2015
• Upwelling in early 2015
J
F M A M J J
8
10
A S O N D
12
14
day of year
temperature (C)
J
Copepod Community Analysis
Copepod Community Analysis
Copepod Community Analysis
Copepod Community Analysis
CN
Shifts apparent in density of
common species
SA
New copepod species
observed on THL, e.g.,
WN
WO
Clausocalanus farrani
Clausocalanus furcatus
Temora discaudata
Subeucalanus subcrassus
Analysis of bongo samples
revealed a new euphausiid
for THL—Euphausia
recurva—in early 2015
Mola mola sightings
Squid fishery out of Eureka
CN
Shifts apparent in density of
common species
SA
New copepod species
observed on THL, e.g.,
WN
WO
Clausocalanus farrani
Clausocalanus furcatus
Temora discaudata
Subeucalanus subcrassus
Analysis of bongo samples
revealed a new euphausiid
for THL—Euphausia
recurva—in early 2015
Mola mola sightings
Squid fishery out of Eureka
CN
Shifts apparent in density of
common species
SA
New copepod species
observed at TH02, e.g.,
WN
WO
Clausocalanus farrani
Clausocalanus furcatus
Temora discaudata
Subeucalanus subcrassus
Analysis of bongo samples
revealed a new euphausiid
for THL—Euphausia
recurva—in early 2015
Mola mola sightings
Squid fishery out of Eureka
Going into 2015: Upwelling...
33.5
33.0
32.5
salinity (psu)
34.0
Going into 2015: Upwelling...
8
10
12
temperature (C)
14
Going into 2015: Upwelling...
Eric P. Bjorkstedt1,2, Roxanne Robertson2, Bill Peterson3
1Southwest
Fisheries Science Center
2Humboldt State University
3Northwest Fisheries Science Center