Eric Bjorkstedt, NOAA Southwest Fisheries Science Center
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
© Copyright 2024