Operational Plan for the Restoration of Diadromous Fishes to the ...

Habitat (units)
Parr Production
16,000
14,000
12,000
10,000
8,000
6,000
4,000
2,000
0
75,000
60,000
45,000
30,000
15,000
0
16,000
14,000
12,000
10,000
8,000
6,000
4,000
2,000
0
Habitat: East Branch
Parr Production: East Branch
Stream Width (m)
Habitat: Souadabscook
0-2
6-8
12-14
18-20
24-26
30-32
36-38
0-2
42-44
6-8
48-50
12-14
18-20
24-26
30-32
36-38
42-44
48-50
0-2
6-8
12-14
18-20
24-26
30-32
36-38
42-44
48-50
Habitat (units)
Parr Production
75,000
60,000
45,000
30,000
15,000
0
Parr Production: Souadabscook
Stream Width (m)
Habitat (units)
Parr Production
16,000
14,000
12,000
10,000
8,000
6,000
4,000
2,000
0
75,000
60,000
45,000
30,000
15,000
Habitat (units)
Parr Production
0
16,000
14,000
12,000
10,000
8,000
6,000
4,000
2,000
Habitat: Wassataquoik Stream
Parr Production: Wassataquoik Stream
0
75,000
60,000
45,000
30,000
15,000
0
0-2
6-8
12-14
18-20
24-26
30-32
36-38
0-2
42-44
6-8
48-50
12-14
18-20
24-26
30-32
0-2
36-38
6-8
42-44
12-14
48-50
18-20
24-26
30-32
36-38
0-2
42-44
6-8
48-50
12-14
18-20
24-26
30-32
0-2
36-38
6-8
42-44
12-14
48-50
18-20
24-26
30-32
36-38
0-2
42-44
6-8
48-50
12-14
18-20
24-26
30-32
36-38
42-44
48-50
Stream Width (m)
Habitat: Kenduskeag
0-2
6-8
12-14
18-20
24-26
30-32
36-38
42-44
48-50
Parr Production: Kenduskeag
Stream Width (m)
Habitat: Sebois River
We queried stream width in the Penobscot basin to illustrate the stream segments to
stock that will optimize parr production (figure 8). Concentrating fry stocking in
stream 4 to 12 m in width should yield greater numbers of parr than stocking other
size streams. This exercise resulted in 57,095 units of optimal fry stock habitat
(segments >50% rearing habitat), or the requirement of over 5 million fry to seed the
habitat at 100 fry/unit. In addition, there were another 22,961 units in segments with
less than 50 % habitat, for a total of 80,056 units. With the Penobscot fry production
currently around one million, management decisions will be required as to where to
stock fry. More detailed optimizations could be carried out to address specific
management concerns. In addition, juvenile population assessment data may reveal
stream reaches larger than 12 m in width that outperform expectations and should
be considered for stocking. However, this should be done so based on data, and
lacking such information, using the 4 to 12 m width recommendation is a sound first
step.
PRFP Page 148
Habitat (units)
Parr Production
16,000
14,000
12,000
10,000
8,000
6,000
4,000
2,000
0
75,000
60,000
45,000
30,000
15,000
Habitat (units)
Parr Production
0
16,000
14,000
12,000
10,000
8,000
6,000
4,000
2,000
0
75,000
60,000
45,000
30,000
15,000
0
Parr Production: Sebois River
Stream Width (m)
Habitat: Passadumkeag
Parr Production: Passadumkeag
0-2
6-8
12-14
18-20
24-26
30-32
36-38
0-2
42-44
6-8
48-50
12-14
18-20
24-26
30-32
36-38
42-44
48-50
Stream Width (m)