Influence of nutrient enrichment on temporal and spatial dynamics of dissolved oxygen within northern temperate estuaries.

ABSTRACT: In temperate estuaries of the southern Gulf of St. Lawrence, intermittent seasonal anoxia coupled with phytoplankton blooms is a regular occurrence in watersheds dominated by agricultural land use. To examine the spatial relationship between dissolved oxygen and phytoplankton throughout the estuary to assist in designing monitoring programs, oxygen depth profiles and chlorophyll measurements were taken bi-weekly from May to December in 18 estuaries. In five of those estuaries, dissolved oxygen data loggers were set to measure oxygen at hourly intervals and at multiple locations within the estuary the subsequent year. The primary hypothesis was that dissolved oxygen in the upper estuary (first 10% of estuary area) is predictive of dissolved oxygen mid-estuary (50% of estuary area). The seco

SUBMITTER: Coffin M 

PROVIDER: S-EPMC8593059 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature