Chemical and biological oceanographic conditions in the Estuary and Gulf of St. Lawrence during 2014 / L. Devine ... [et al.]. : Fs70-5/2015-071E-PDF

"The Atlantic Zone Monitoring Program (AZMP) was implemented in 1998 with the aim of (1) increasing Fisheries and Oceans Canada’s (DFO) capacity to understand, describe, and forecast the state of the marine ecosystem and (2) quantifying the changes in the ocean’s physical, chemical, and biological properties and the predator–prey relationships of marine resources. A critical element in the observational program of AZMP is an annual assessment of the distribution and variability of nutrients and the plankton they support. In this document, we review the chemical and biological oceanographic (lower trophic levels) conditions in the Gulf of St. Lawrence (GSL) in 2014. While indicators driven by winter air temperature (e.g., winter cold surface-layer volume, ice volume, summertime cold intermediate layer) showed cooler conditions overall in 2014 compared to the last few years (since 2010), indicators of summertime near-surface temperatures and deep-water (> 150 m) temperatures were at or near record highs. This report describes changes in the annual production cycles and community composition of phytoplankton and zooplankton in this context"--Introd., p. 1.

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