Table 1

Fish community response to physicochemical factors

Species diversity

CPUE (#·m2)

BPUE (g·m2)

Size-structure (h)


Variation by embayment

ns

p < 0.0025

p < 0.0025

p = 0.04

Physicochemical Factor

TP load (0.88 – 4.34)

ns

ns

28 (0.02)

ns

Area (4.79 – 7.05)

ns

ns

9.6 (0.04)

ns

TPload*Area

ns

ns

-4.3 (0.03)

ns

% vegetation (0 – 90)

ns

0.01 (0.02)

ns

-0.05 (0.005)

Variation model

n/a

Between

-0.146

0.86

0.83

Within

0.132

0.005

-0.004


"Variation by embayment" indicates if variability for each response among embayments significantly differed from zero. Effects of total phosphorus load (TPload; kg·y-1), embayment area (m2), and percent vegetation on each characteristic are presented as slope estimates; ns indicates no significant effect of that factor; n/a indicates not applicable. P values for effects are indicated in parentheses under each response column; the range of transformed values for each physicochemical effect are indicated in parentheses to the right of each effect's name. The variation explained by each model ("Variation model") is divided into variation between embayments ("Between") and within embayments ("Within").

Arend and Bain BMC Ecology 2008 8:23   doi:10.1186/1472-6785-8-23

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