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Data collected by members of the Teifi Rivers Invertebrate Monitors

The tables below show the species recorded by the members of TRIM from their collection points. . Locations for the points are shown on this Google map -

The data from collections made in 2008 and 2009 is shown on this page -

Invertebrate monitoring through the winter- memnbers of the Llanybydder Angling Association collecting the dat for the 2009/10 winter sample.

 

 

Collection points 5, 8 and 10 are showing counts low enough to cause concern. The Environment Agency have been informed

and we are awaiting a response.

 

COLLECTION POINT

SUMMER 2010

1
2
3
4
5
6
7
8*
9
10*
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
CADDIS FLIES
Trichoptera -Caseless Caddis
 10 20 10 10 5     11 45 22 4             0 40 100 40 40 50                
Trichoptera - Cased Caddis
10 >100 5 20 15     0 0 0 6             6 100 50 20 10 50                

MAYFLIES

 
Baetidae, e.g. Olives
50 >100 30 100 60     19 0 190 40             15 300 40 90 300 40                
Ephemeridae, Mayflies
 1 0 0 0 0     0 0 0 0             0 0 0 0 0 0                
Ephemerellidae, Blue Winged Olives
40 100 5 10 100     0 0 0 0             20 100 20 5 20 10                

Heptagenildae,e.g.YellowMay Dun

50 20 30 20 >100     15 0 24 10             5 90 30 50 40 50                
STONEFLIES
Plecoptera
 30 20 >100 100 50     15 20 25 40             5 400 80 30 30 50                
SHRIMPS
Gammarus
 5 0 30 0 >200     5 3 40 10             15 20 10 1 0 10                
  Leeches 1 0 2 0 1     0 0   0             0 3 4 0 0 0                
  Snails 2 0 0 0 1     0 0   0             0 1 1 0 0 0                
  Hog Louse 0 0 0 0 0     0 0   0             0 0 10 0 0 0                
  Saucer Bugs/ Beetles 20b 2b 2 3 5B     0 0   0             0 0   10b 10b 0                
  Fish 1 eel 0 0 0 0     0 0   0             0 1BH 2BH * 1BH 2BH                
  Larvae, e.g. Damsel Fly 0 0 0 0 0     0 0   0             0 0 0 0 0 0                  

*SP 19 - The Afon Duar sample contained 12 Parr and 4 bullheads

SP 20 - The Nant Cledlyn sample contained 2 freshwater limpets

SP5 - mystery shell being examined by experts

 

 

 

COLLECTION POINT

SPRING 2010

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
CADDIS FLIES
Trichoptera -Caseless Caddis
0
0
30
20
20
20
2
0
8
20
-
5
< 5
5
10
4
20
20
15
34
10
10
16
10
20
Trichoptera - Cased Caddis
0
2
20
40
20
30
0
0
0
50
-
10
8
10
20
10
5
0
1
10
26
10
10
20
5

MAYFLIES

 
Baetidae, e.g. Olives
200
200
200
50
400
300
80
110
130
200
-
>15
>25
1
190
3
120
230
70
160
500
150
150
90
42
Ephemeridae, Mayflies
0
0
0
1
0
0
0
0
0
0
-
0
0
1
0
0
0
0
0
0
0
0
0
0
0
Ephemerellidae
0
0
0
0
10
10
0
0
0
0
-
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Heptagenildae,e.g.YellowMay Dun

250
200
300
100
300
300
65
90
22
200
-
>10
>20
15
30
90
160
180
100
50
13
30
30
20
150
STONEFLIES
Plecoptera
2
150
30
50
200
100
35
26
12
200
-
>5
>10
0
9
20
100
60
40
50
46
80
50
100
36
SHRIMPS
Gammarus
0
0
6
0
100
200
19
80
0
50
-
>10
0
2
1
3
10
4
0
0
0
50
10
20
4
  Leeches
0
0
0
0
0
0
0
0
0
0
5
0
1
0
0
1
0
0
1
0
0
0
0
  Snails
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
  Hog Louse
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
4
0
0
0
0
  Saucer Bugs/ Beetles
0
0
0
0
0
0
0
0
0
0
5B
10B
20B
0
0
0
0
0
0
14
0
0
0
0
  Fish
0
0
0
Trout
*
0
0
0
0
0
0
*
BH
0
0
0
0
0
0
0
0
0
0
0
  Larvae, e.g. Damsel Fly
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

*Sampling point 6 had an interesting result , a large bullhead was caught in the sample and a brook lamprey and 15 minnows were seen adjacent to the sampling point.

*Sampling points 15, 16&17 had low counts but 2 brook lamprey were in the sample taken on the Afon Cerdin, SP16

 
COLLECTION POINT

WINTER, 2009/10

 

 

 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31  
CADDIS FLIES
Trichoptera -Caseless Caddis
 1 3 10 2   6 0 4 0 3 4 18 7 4 10 10 10   10 5 20 5 1 4 6 3         1  
Trichoptera - Cased Caddis
2 3 0 0   0 10 0 1 3 0 7 2 1 5 20 15   6 4 1 0 1 14 18 13         0  

MAYFLIES

 
Baetidae, e.g. Olives
200 20 30 20   50 200 80 70 29 20 140 170 130 30 20 15   20 10 20 50 20 24 26 150         10  
Ephemeridae, Mayflies
 0 1 0 0   0 0 0 0 0 0 0 0 0 0 0 0   0 0 0 0 0 0 0 0         0  
Ephemerellidae - BWO
0 0 0 0   0 0 0 0 0 0 0 0 0 0 0 0   0 0 0 0 0 2 3 0         0  

Heptagenildae,e.g.YellowMay Dun

300 100 170 100   100 300 40   27 20 110 130   10 20 10   100 20 70 30 50 60 22 25         15  
STONEFLIES
Plecoptera
 30 2 4 10   70 200 0 6 9 5 100 150 60 20 20 40   20 10 2 20 10 36 30 12         3  
SHRIMPS
Gammarus
 2 0 8 0   30 200 0 4 18 6 0 10 30 50 20 10   10 3 2 0 0 0 50 0         7  
  Leeches 0 0 0 0   0 0 0 0 2 3 0 0 4 10 5 0   0 1 1 1 0 2 0 10         100  
  Snails 0 0 0 0   0 0 0 0 0 0 0 0 0 0 0 0   0 0 0 0 0 0 0 0         0  
  Hog Louse 0 0 0 0   0 0 0 0 0 0 0 0 0 0 0 0   0 0 0 1 0 0 0 0         20  
  Saucer Bugs/ Beetles 0 0 0 0   0 0 0 0 0 0 0 0 0 0 0 0   0 0 0 0 0 0 0 0         0  
  Fish 0 0 0 0   0 0 0 0 0 0 0 0 0 0

1Eel,

100mm

 0   0 UFO 0 0 2BH 0 0 1BH         1SL  
  Larvae, e.g. Damsel Fly 0 0 0 0   0 0 0 0 0 0 0 0 0 0 0 0   0 0 0 0 0 0 0 1DF         0  
 
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