The first two species axes have correlation
coefficient of 0.01. Eight environmental factors affected epipelon
distribution with different degrees. Transparency, temperature,
pH, PO4, and SiO2 had great influence on epipelon as
indicated by their high correlation with the two significant
canonical roots. Most species were marginally affected by
transparency except species of group D and two species of
group B (Melosira varians and Fragilaria acus). Species of
group D and majority of groups C and B were positively
affected by eutrophication, PO4 and NH4 and temperature,
whereas they were negatively affected by pH and SiO2
The first two species axes have correlationcoefficient of 0.01. Eight environmental factors affected epipelondistribution with different degrees. Transparency, temperature,pH, PO4, and SiO2 had great influence on epipelon asindicated by their high correlation with the two significantcanonical roots. Most species were marginally affected bytransparency except species of group D and two species ofgroup B (Melosira varians and Fragilaria acus). Species ofgroup D and majority of groups C and B were positivelyaffected by eutrophication, PO4 and NH4 and temperature,whereas they were negatively affected by pH and SiO2
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