... the left
and right stream banks separately. Define the "left" and "right" banks
by standing at the downstream end of the study stretch and look up-
stream. Each bank is evaluated ... the larger nannoplankton.
Most planktonic organisms fall into the rnicroplankton or net plankton cate-
gory. The sizes range from the largest nannoplankton to about
2
mm (thou-
sandt...
... flow, and the speed of
flow changes to form
a
river. As it changes speed and slows, the river bot-
tom changes from rock and stone to silt and clay. Plants begin to grow,
stems thicken, and ... shape channels, or move signifi-
cant quantities of sediment in all but sand-bed streams, which can experience
change more rapidly. During extreme events, the greatest scour occurs, and the ......
... suspended or-
ganisms, the plankton, such as phytoplankton (plants) and zooplankton (ani-
mals), and some consumers such as insects and fish. Plankton are small organ-
isms that can feed and reproduce ... water) and lentic
(standing water) are highlighted.
'
13~ evern,
N.
R.,
King, D. L., and Ring,
R.,
"Lake Classification Systems, Part
I,"
The Michigan Riparian,...
...
Sediments
Animal 'N'
Excretion
I
Ammonia
++
Organic Nitrogen
as
Amino
Acids
Figure
3.3
Nitrogen cycle.
the topic of stream ecology and self- purification, it is important to ... compounds.
However, an important distinction between cycling of sulfur and cycling of ni-
trogen and carbon is that sulfur is "already fixed." That is, plenty of sulfate an-...
...
Community ecology- the study of the structure and dynamics of animal and plant commu-
nities. Population ecology provides
modeling tools that
can be used for predicting corn-
munity structure and ... abandonment, the climax oak-hickory forest was
restored.
5.6
POPULATION RESPONSE TO STRESS
AND STREAM ECOLOGY
It
is important to understand that the dynamic balance of the stre...
... the major
determinant of stream water chem-
istry
locally as well. These "determinants" of stream water chemistry are actu-
ally the stream& apos;s "DNA." More specifically, ... and very basic form. The intent has been to lay a foundation upon
which the focus of this text, stream ecology and self- purification, can be built.
Beginning with an introductio...
... Publishing Company, Inc.
Stream
Pollutants
137
Man's actions are determined by his expediency. If it makes man's life more con-
venient, less expensive or
pleasanter,
the
stream and its ... pesticides, cleaning sol-
vents, and many others-organic chemicals
(6)
Insoluble particles of soil, silt, and other inorganic and organic materials that
can remain suspended in wate...
... ANOVA.
+Rodents
+Rodents
-Rodents
-Rodents
Effects of removal of
+Ants
-Ants
+Ants
-Ants
Rodents
Ants
Initial Census 29 January 1977
1. Large plants
1.00 (35.8)
0.98
2.08
2.35
Increase
b
NS
2. Small plants
1.00 ... recombination and survival of plant species
in heterogeneous environments. Many plants can reproduce vegetatively or
by self- fertilization, but these mechanisms are not conduci...