design and interpretation of toxic chemical distribution and stress : detroit river case study
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Design and interpretation of toxic chemical distribution and stress : Detroit River case study. G.D. Haffner, Sara Wood and Alice Grgicak-Manion Great Lakes Institute for Environmental Research, Universitry of Windsor, Ontario, Canada. curriculum in natural environmental science, 2005. - PowerPoint PPT PresentationTRANSCRIPT
Design and interpretation of toxic chemical distribution and stress : Detroit River case study
G.D. Haffner, Sara Wood and Alice Grgicak-Manion
Great Lakes Institute for Environmental Research,Universitry of Windsor, Ontario, Canada
curriculum in natural environmental science, 2005
Stratified/random sampling design for the Detroit River. This design reflects the overall health of the river system and provides the basis for powerful statistical analysis
curriculum in natural environmental science, 2005
Sampling Sites
Lin
kag
e D
ista
nce
0
50
100
150
200
250
300
A cluster diagram illustrating the three primary benthic communities
curriculum in natural environmental science, 2005
Plot of Means for Each Benthos Cluster
Taxa .
Den
sity
(ln
(org
anis
ms/
m2)
+1)
0
2
4
6
8N
em
ato
da
Ch
iron
om
ida
e
Olig
och
ae
ta
Ce
rato
po
go
nid
ae
He
xag
en
ia
Ca
en
is
Hyd
rop
sych
ida
e
Fe
rris
sia
Aca
ri
Hiru
din
ea
Hyd
rozo
a
Am
ph
ipo
da
Dre
isse
na
Tu
rbe
llaria
Depositional (1)
Depositional (2)
High energy (3)
The relative composition of the two depositional and one high energy benthic community
curriculum in natural environmental science, 2005
The spatial distribution of the three benthic communities within the Detroit River. Note that although Community 2 tends to aggregate along the lower, western reach of the river, there is no overall pattern of distribution
curriculum in natural environmental science, 2005
Spatial distribution of sites exceeding either LEL or SEL guidelines. Most sampled sites exceeded the guidelines for at least one metal.
curriculum in natural environmental science, 2005
GIS representation of the spatial distributions of Pb and Cd in the Detroit River indicating that different processes were regulating the fate of these metals
curriculum in natural environmental science, 2005
GIS representation of the spatial distributions of Zn and Hg in the Detroit River indicating that different processes were regulating the fate of these metals
curriculum in natural environmental science, 2005