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Rock Island Field Office
Ecological Services
1511 47th Avenue
Moline, IL 61265
Phone: 309-757-5800
Fax: 309-757-5807
Federal Relay: 800-877-8339
Email:
RockIsland@fws.gov
Connect With Us
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Figure 1. Mussel growth over the summer of
2011.
The mesh size of the chamber screen is one
millimeter.
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| June 7, 2011 |
July 8, 2011 |
August 10, 2011 |
Table 1. Initial average size of fat mucket for
each mussel silo and placement location.
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| Mussel Silo Number |
Initial
(June 7) Average
Mussel Length
millimeters (n=10) |
Location |
| 1 |
15.5 |
Gravel bar at Palisades State Park |
| 2 |
15.5 |
" |
| 3 |
15.6 |
Ford
at Palisades State Park |
| 4 |
15.1 |
" |
| 5 |
15.7 |
Palo
bridge |
| 6 |
15.6 |
" |
Table 2. Survival and growth of mussels
in each mussel silo.
| Mussel Silo Number |
July 8 2011 |
August 10, 2011 |
| 1 |
9
dead, 1 livea - sedimentation; 21.86% growth |
n/a |
| 2 |
10
dead, 0 live - sedimentation |
n/a |
| 3 |
10
dead, 0 live - sedimentation |
1live - standed; 5.64%growth |
| 4 |
0
dead, 10 live; 72.07% growth |
5 dead, 5 live - stranded; 5.64% growth |
| 5 |
0
dead, 10 live; 106.01% growth |
10
dead, 0 live - sedimentation |
| 6 |
0
dead, 9 live; 98.08% growth |
0 dead, 9 live - partially stranded: 13.86% growth |
a chamber #3
replaced with chamber #1 with one live mussel
Figure 2. Mussel growth chart over the summer of
2011.
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Table 3. Water quality conditions at the mussel
biomonitoring locations in the Cedar River.
The
measurements were taken with a calibrated Hydrolab Quanta
meter.
| Palisades State
Park |
June 7, 2011 |
July 8, 2011 |
August 10, 2011 |
| Temperature (F) |
79.8 |
80.7 |
74.3 |
| Conductivity (uS/m3) |
576 |
564 |
475 |
| Dissolved Oxygen
(mg/L) |
8.55 |
13.13 |
10.92 |
| Oxygen Percent
Saturation |
128.8 |
181.9 |
145.3 |
| pH |
9.27 |
9.73 |
9.47 |
| Turbidity (NTU) |
54.3 |
25.8 |
76.4 |
| Time |
1417 |
1221 |
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| Palo Bridge |
June 7, 2011 |
July 8, 2011 |
August 10 2011 |
| Temperature
(F) |
79.9 |
79.7 |
76.8 |
| Conductivity (uS/m3) |
548 |
555 |
432 |
| Dissolved
Oxygen (mg/L) |
8.9 |
10.88 |
13.35 |
| Oxygen Percent
Saturation |
120.4 |
161.7 |
186 |
| pH |
9.34 |
9.66 |
10.1 |
| Turbidity (NTU) |
77.1 |
51.3 |
39.1 |
| Time |
1612 |
1450 |
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Last updated: January 11, 2013
