Status
Narragansett Bay
In the Narragansett Bay watershed, the percent relative abundance of cold-coolwater species ranged from 11 percent in the Palmer River to 67 percent in the Upper Blackstone River (Table 2). Percent relative abundance of fluvial species ranged from 9 percent in the Palmer River to 65 percent in the Upper Blackstone River (Table 2). The two metrics are highly correlated (r=0.91), and the data are quite variable. Figure 1 plots the percent relative abundance of cold-coolwater and fluvial fish, and shows that the data are skewed, as the medians are quite different from the means (diamonds) within each HUC10 watershed and as compared among watersheds. The range of data for both metrics within the full Narragansett Bay watershed was 0-100 percent.
Table 2. Average of percent relative abundance for cold-coolwater fish and fluvial fish by HUC10 in the Narragansett Bay watershed. SD = standard deviation.
HUC10 Name
|
HUC10
|
No. Samples
|
Average Cold-coolwater Fish % (SD)
|
Average Fluvial Fish % (SD)
|
Upper Blackstone River
|
0109000301
|
69
|
67 (36)
|
65 (38)
|
Lower Blackstone River
|
0109000302
|
70
|
50 (38)
|
46 (41)
|
Upper Taunton River
|
0109000401
|
19
|
22 (28)
|
22 (28)
|
Middle Taunton River
|
0109000402
|
55
|
32 (32)
|
30 (32)
|
Threemile River
|
0109000403
|
16
|
28 (34)
|
29 (34)
|
Ten Mile River
|
0109000404
|
18
|
20 (30)
|
18 (30)
|
Woonasquatucket River-Moshassuck River
|
0109000405
|
0
|
-
|
-
|
Pawtuxet River
|
0109000406
|
12
|
25 (17)
|
18 (33)
|
Palmer River
|
0109000407
|
32
|
11 (22)
|
9 (17)
|
Lower Taunton River-Frontal Mount Hope Bay
|
0109000408
|
37
|
15 (37)
|
16 (23)
|
Narragansett Bay
|
0109000409
|
54
|
31 (37)
|
24 (36)
|
Figure 1. Percent relative abundance of cold-coolwater fish and fluvial fish within HUC10 watersheds in the Narragansett Bay watershed. HUCs are represented by the last 3 digits of their number, see Table 2 for HUC numbers and names. Horizontal lines indicate medians. Boxes represent the 25th percentile to 75th percentile. Whiskers indicate the range, means shown as open diamonds, solid points are outliers.
Directory: publications -> StatusandTrendspublications -> Swiss Federal Institute of Technology (eth) Zurich Computer Engineering and Networks Laboratorypublications -> Quantitative skillspublications -> Multi-core cpu and gpu implementation of Discrete Periodic Radon Transform and Its Inversepublications -> List of Publications Department of Mechanical Engineering ucek, jntu kakinadapublications -> 1. 2 Authority 1 3 Planning Area 1publications -> Sa michelson, 2011: Impact of Sea-Spray on the Atmospheric Surface Layer. Bound. Layer Meteor., 140 ( 3 ), 361-381, doi: 10. 1007/s10546-011-9617-1, issn: Jun-14, ids: 807TW, sep 2011 Bao, jw, cw fairall, sa michelsonStatusandTrends -> To the Narragansett Bay Estuary ProgramStatusandTrends -> Stream invertebratesStatusandTrends -> Marine beaches
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