Coastal Restoration Trust of New Zealand

Coastal Dune Ecosystem Reference Database

Assessing ecological community health in coastal estuarine systems impacted by multiple stressors

Author
J.I.Ellis, J.E.Hewitt, D.Clark, C.Taiapa, M.Patterson, J.Sinner, D.Hardy, S.F.Thrush
Year
2015
Journal / Source
Journal of Experimental Marine Biology and Ecology
Volume
473
Month
December
Pages
176-187
Keywords
Canonical ordination Cumulative impacts Community health Multiple stressors Interactions
Summary
Highlights • Distance-based linear modelling identified sediments, nutrients and heavy metals as key ‘stressors’ affecting the ecology of our study harbour. • We developed multivariate models to identify key stressors affecting the ‘health’ of estuarine macrofaunal communities. • The multivariate models were found to be more sensitive to changing environmental health than simple univariate measures. • These models should enable long-term degradative change from multiple disturbances to be assessed.