Trend evaluation of water quality parameters in the Niagara and St. Lawrence Rivers.

Abstract:

:Physical and chemical (nutrients and major ions) indicators of water quality monitored by Environment Canada between 1977 and 1987 in the Niagara River at Niagara-on-the-Lake and in the St. Lawrence River at Wolfe Island are analyzed for seasonal and annual variations. Parametric methods such as moving averages and linear regression and nonparametric methods (Spearman's rank coefficient) are used to test for the existence of trends in these data. The results indicate that specific conductivity, sodium and chloride have decreased significantly over the period of study. During the same period there is no significant trend for either discharge and nutrients.

journal_name

Environ Monit Assess

authors

Tsanis IK,El-Shaarawi AH

doi

10.1007/BF00406962

subject

Has Abstract

pub_date

1992-12-01 00:00:00

pages

205-18

issue

1-3

eissn

0167-6369

issn

1573-2959

journal_volume

23

pub_type

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