Spatial and temporal distributions of microplankton during the summers of 1992–1993 in Barkley Sound, British Columbia, with emphasis on harmful species

Bio-optical variability at a Vancouver Island aquaculture site

“…Similar conditions and magnitudes have been reported under intense E. huxleyi bloom conditions (Garcia et al 2011;Balch et al 2014). As mentioned previously, isolated E. huxleyi blooms are common within the inlets of western Vancouver Island due to advection from offshore waters during this time of the year (Taylor and Haigh 1996;S. Cross, unpubl.…”

“…These conditions resulted in a fivefold increase in b p when compared to fall, but b bp only increased by a factor of 1.3, illustrating the sensitivity of b p to the size and density of large phytoplankton and the low backscattering efficiency of these particle types (Neukermans et al ). The higher b bp occurring in summer, despite comparable biogeochemical concentrations to spring, was likely due to the presence of E. huxleyi , which are common in this region during that time of the year (Taylor and Haigh ; Irvine and Crawford ). Evidence of this type of bloom is the observed milky waters on A20‐22BC (Fig.…”

“…Bio‐optical profiles and discrete biogeochemical samples were collected nearly continuously over several days in the fall (November, 2011), spring (May, 2012), and summer (August, 2012). This region is characterized by upwelling during spring and summer, where a large range of phytoplankton populations including blooms of diatoms ( Skeletonema ) and the coccolithore species, Emiliania huxleyi , can be experienced (Taylor and Haigh ; Irvine and Crawford ). In turn, fall/winter downwelling generally results in low biological productivity and thus, a wide range of conditions were observed providing a diverse bio‐optical dataset.…”

Diatom Transcriptional and Physiological Responses to Changes in Iron Bioavailability across Ocean Provinces

“…In this region, Fe is supplied to surface waters mainly through atmospheric deposition of dust from arid continental regions and volcanic emissions, with Fe inputs from continental margin sediments fueling winter phytoplankton blooms when atmospheric deposition is low (Lam et al, 2006;Lam and Bishop, 2008). A gradient in surface nutrient concentrations is observed from this oceanic region eastwards toward the continent; bioavailable Fe increases and supports higher phytoplankton biomass while NO − 3 concentrations in the upper mixed layer decrease to limiting levels on the continental shelf (Taylor and Haigh, 1996;Harris et al, 2009;Ribalet et al, 2010).…”

Patterns of diatom diversity correlate with dissolved trace metal concentrations and longitudinal position in the northeast Pacific coastal-offshore transition zone

“…In addition to evaluating phytoplankton productivity as a whole, it is important to examine how the phytoplankton community composition shifts along the transect in response to these changing environmental gradients. Large diatoms dominate the phytoplankton community in the western Vancouver coastal zone, where the Line P transect begins (Taylor & Haigh 1996). As the Line P transect moves west into the coastal−HNLC transition zone, the larger dia toms (> 5 µm) become rare, except during occasional blooms (Boyd & Harrison 1999, Boyd et al 2004, Peña & Varela 2007.…”