|
These
maps
are
in a
standard
format
as
required
by
the
Michigan
Department
of
Environmental
Quality
(DEQ).
The
maps
divide
the
parts
of
the
lake
capable
of
growing
aquatic
plants
into
sub
areas
and
record
the
cover
of
each
aquatic
plant
species
found
in
each
area.
Vegetation
summary
sheets
summarize
the
information
from
the
maps
in a
form
that
the
DEQ
uses
to
make
decisions
about
permits.
Notations
on
the
map
are
interpreted
as
follows:
Number
(=
plant
species)
Letter
(=approximate
cover
of
this plant)
For
Example:
“1b”
indicates
plant
species
#1
at a
density
of b
Species
are
usually
numbered
according
to a
standardized
numbering
system
(at
right).
We
often
reproduce
the
species
number
key
and
species
name
abbreviations
on
the
map
itself.
The
cover
codes
a,
b, c
and
d
are
used
to
describe
the
approximate
coverage
of
each
plant
within
the
map
area,
as
described
in
the
following
table.
|
Cover
Code |
Approximate
Cover Range |
|
|
1-2% |
|
b |
3-20% |
|
c |
21-60% |
|
d |
61-100% |
|
