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Using Shellfish Population Field Surveys to Inform Management Decisions Quonochontaug Pond, R
Using Shellfish Population Field Surveys to Inform Management Decisions
Quonochontaug Pond, RI
Donor Site
Transplant Site
Ninigret Pond
Ninigret Pond
0 1 2 3 4 5 6 8 9 10
12
15
16
17
18
19
20
21
22
23
24
26
27
28
29
30
31
32
33
34
36
37
38
39
40
42
43
45
47
48
49
51
52
54
55
56
57
58
59
60
61
62
64
65
66
67
70
71
73
76
79
81
85
86
89
0
5
10
15
20
25
30
35
Constas et al. 1980
n = 126
SUBLEGAL 69.8% LEGAL 30.2%
LITTLENECKS78.9%
CHERRYSTONES18.4%
CHOWDERS2.6%
47 mm 72 mm 88 mm
SHELL LENGTH (mm)
FR
EQ
UE
NC
Y
The Nature Conservancy 2010
LENGTH FREQUENCY OF QUAHOGS IN NINIGRET POND
Estimated Quahog Population =
5,241,309
Average Pond-wide Density =
1.12 clams/m2
Estimated Quahog Population =
3,316,412
Average Pond-wide Density =
0.98 clams/m2
STRATA0.0
2.0
4.0
6.0
8.0
Structure/EastStructure/CentralSand/EastStructure/WestSand/WestSand/CentralMuck/WestMuck/EastMuck/Central
DENSITY/m2
QUAHOG DENSITY BY SUBSTRATE
Constas et al. 1980 The Nature Conservancy 2010
DISCUSION OF MANAGEMENT IMPLICATIONS
Questions?
