TABLE 2

Most significant relationships/contributions for all factors to enterococcal concentrationsa

X variableLoading
FreshwaterEstuary, estuary beach, and marine beach
PLSR 1PLSR 1PLSR 2
Particle ENT0.5010.4560.420
qPCR mammal0.3520.438−0.337
TSS0.408
% freshwater0.408−0.418
% sediment0.336
% unknown0.476−0.4570.389
Water temp (°C)0.302−0.123
Salinity−0.344
High tide (ft)0.1700.456
% estuarine sediment−0.2940.401
Y variance (%)b60.147.214.6
  • a Shown is the output from a partial least-squares regression for a freshwater and estuary/marine model. All variables shown have significant relationships for each model (VIP > 0.8), and loadings are derived from rerunning models with only variables deemed significant. Model loadings are specific weights on a multivariate regression axis; positive and negative loadings refer to positive or negative relationships to enterococcal concentrations. Negative loadings in the model are designated with a minus sign before the number.

  • b The cumulative total Y variance, for the estuary, estuary beach, and marine beach (PLSR and PLSR 2), was 61.8%.