Resumen
This paper described the variability of stream temperature, ????
T
s
, and compared relationships between ????
T
s
and air temperature, ????
T
a
, at 10 sites along a 1.2 km reach in a 2 km2
2
basin in New Jersey, USA, using Bayesian Hierarchical Regression. Mean daily mean ????
T
s
was significantly cooler at two sites and significantly warmer at three sites relative to the mean daily ????
T
s
for all sites combined. Seasonal daily mean ????
T
s
showed the greatest variation between sites in the summer within the reach for both daily mean and daily maximum temperatures. Posterior distributions for slope parameters (????
ß
j
) for regressions varied significantly by season and showed the greatest variation in summer. The strongest relationships occurred in autumn with ??=0.743±0.019
ß
=
0
.
743
±
0
.
019
(??=0.712±0.022
ß
=
0
.
712
±
0
.
022
), and the weakest relationships occurred in the summer with ??=0.254±0.030
ß
=
0
.
254
±
0
.
030
(??=0.193±0.039
ß
=
0
.
193
±
0
.
039
). Results support the conclusion that riparian shading impacts the effect of ????
T
a
on ????
T
s
, and that ????
T
s
shows a stronger relationship with measured ????
T
a
at sites in open areas that are more likely to have meteorologic conditions similar to bulk conditions.