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Hotwater physa (Physella wrighti) COSEWIC assessment and upate status report: chapter 16

Appendix B: Survey Data for Physella wrighti: 1997 and 2006.

 


1997 Data
Section Start West 2006
(m)		 End West
2006
(m)		 Start East
2006
(m)		 End East
2006
(m)		 Number Snails
West		 Number
100 cm² quads West		 Temperature
West 1997
(ºC )		 Number Snails
East
Number 100 cm² quads
East		 Temperature
East 1997
(ºC )		 Notes
1997
1 0 2.5 Dam 5     36.5 0   36.5  
2 2.5 3.5 5 6       5 4 30.5  
3 3.5 4.5 6 7              
4 4.5 5.5 7 8 47 20 32 21 9 30.5 snails
in
Chara
5 5.5 6.5 8 9              
6 6.5 7.5 9 10       60 15 30 snails in Chara
7 7.5 8.5 10 11              
8 8.5 11.5 11 12 609 129 35.8       snails in Chara
9 11.5 12.5 12 13 25 4   472 20   snails in Chara
10 12.5 14.5 13 14              
11 14.5 15.5 14 15     23.5        
12 15.5 16.5 15 16              
13 16.5 17.5 16 17 601 31 30 47 20 33.5 snails on sediment
14 17.5 18.5 17 18              
15 18.5 20.5 18 19     35        
16 20.5 21.5 19 20              
17 21.5 22.5 20 21     36 129 22 36 snails in Chara
18 22.5 23.5 21 22              
19 23.5 24.5 22 23              
20 24.5 25.5 23 24     36        
21 25.5 26.5 24 25              
22 26.5 27.5 25 26              
23 27.5 28.5 26 27              
24 28.5 29.5 27 28 106 90 34.5       snails in Chara
25 29.5 30.5 28 29              
26 30.5 31.5 29 30       5 6.25 35.5 snails
in
Chara
27 31.5 32.5 30 31              
28 32.5 33.5 31 32              
29 33.5 34.5 32 33              
30 34.5 35.5 33 34     24.8        
31 35.5 36.5 34 35              
32 36.5 37.5 35 36              
33 37.5 38.5 36 37           30.5  
34 38.5 39.5 37 38              
35 39.5 41.5 38 39     36        
36 41.5 42.5 39 40              
37 42.5 43.5 40 41              
38 43.5 44.5 41 42              
39 44.5 45.5 42 43     35.5        
40 45.5 46.5 43 44              
41 46.5 47.5 44 45              
42 47.5 57.5 45 55     33        

 

2006 Data
Section Start West 2006
(m)		 End West 2006
(m)		 Start East 2006
(m)		 End East 2006
(m)		 Width 2006
(m)		 Zone East North Error Tempera-ture West 2006
(ºC)		 Tempera-ture East 2006
(ºC)		 Number Snails
West		 Number 100 cm² quads
West		 Number Snails East Number 100 cm² quads
East		 Notes
2006
1 0 2.5 Dam 5 480 9V 664-453 659-1645 ±9m 36.00 36.00 105 12 0 0 *snails in upper centre area
2 2.5 3.5 5 6 220         35.50 36.25 11 2 0 0  
3 3.5 4.5 6 7 313         36.00 38.00 44 6 0 0  
4 4.5 5.5 7 8 280         36.00 37.50 12 4 0 0  
5 5.5 6.5 8 9 292         36.00 37.00 32 9 0 0  
6 6.5 7.5 9 10 325         36.00 37.00 82 11 0 0  
7 7.5 8.5 10 11 315         36.00 36.50 82 11.5 6 8  
8 8.5 11.5 11 12 280         35.75 36.50 20 5 5 5 200m on West to compensate for stream curve
9 11.5 12.5 12 13 334         36.00 36.50 3 1 1 0.5 200m on West to compensate for stream curve
10 12.5 14.5 13 14 335 9V 664-447 659-1630 ±7m 36.50 36.50 234 69.3 0 0 *two areas where den
sity 50 in 1Q
egg mass noted within one dense area
11 14.5 15.5 14 15 200         37.00 38.00 8 1.5 0 0  
12 15.5 16.5 15 16 212         36.50 38.00 14 4 0 0  
13 16.5 17.5 16 17 230         36.00 37.75 5 1.5 6 3  
14 17.5 18.5 17 18 254         37.00 38.00 2 1 0 2  
15 18.5 20.5 18 19 310         37.00 38.00 9 5 0 0 200m on West to compensate for stream curve
16 20.5 21.5 19 20 280         37.50 38.00 0 0 2 1  
17 21.5 22.5 20 21 300         37.50 38.00 0 0 0 0  
18 22.5 23.5 21 22 310         37.00 38.00 0 0 5 2.5  
19 23.5 24.5 22 23 290         39.00 37.50 0 0 34 3 island in middle; 2 snails in 50Q
20 24.5 25.5 23 24 275         37.00 38.00 0 0 14 5 island in middle;
14 snails in 5Q
21 25.5 26.5 24 25 240 9V 664-455 659-1622 ±9m 36.50 38.00 0 0 5 2  
22 26.5 27.5 25 26 150         37.00 38.00 0 0 4 1  
23 27.5 28.5 26 27 166         37.00 38.00 0 0 0 0  
24 28.5 29.5 27 28 166         37.00 38.00 2 0.5 0 0  
25 29.5 30.5 28 29 166         37.00 37.50 0 0 21 3  
26 30.5 31.5 29 30 182         37.00 39.00 0 0 1 0.25 1 snail on leaf
27 31.5 32.5 30 31 182         36.00 37.00 1 0.25 0 0  
28 32.5 33.5 31 32 160 9V 664-449 659-1604 ±11m 36.00 37.00 10 2 0 0 snails on West in footprint at cooler temperature
29 33.5 34.5 32 33 115         37.00 38.00 26 8 107 17 some snails on East in footprint @ 20C
30 34.5 35.5 33 34 150         36.00 40.00 6 6 89 20  
31 35.5 36.5 34 35 160         37.00 36.00 8 8 21 10 other inverts noted in stream
32 36.5 37.5 35 36 195         36.00 36.50 0 0 0 0  
33 37.5 38.5 36 37 240         36.00 36.00 4 1 0 0  
34 38.5 39.5 37 38 245         36.50 36.00 0 0 0 0  
35 39.5 41.5 38 39 250         37.00 36.50 0 0 0 0 200m on West to compensate for stream curve
36 41.5 42.5 39 40 150         37.00 36.50 0 0 0 0  
37 42.5 43.5 40 41 140 9V 664-459 659-1608 ±8m 37.50 36.50 0 0 0 0  
38 43.5 44.5 41 42 168         37.00 36.00 0 0 1 0  
39 44.5 45.5 42 43 186         37.00 36.00 0 0 0 0  
40 45.5 46.5 43 44 213         38.00 36.50 0 0 0 0  
41 46.5 47.5 44 45 220 9V 664-464 659-1608 ±8m 38.00 37.00 0 0 0 0  
42 47.5 57.5 45 55 220             1 0.5     compass direction 148 magnetic
43 57.5 67.5 55 65 180 9V 664-466 659-1596 ±7m 38.00 38.00 0 0 9 0 compass direction 144
magnetic sediment 5-10cm from bank;
snails tumbling
44 67.5 77.5 65 75 380 9V 664-472 659-1584 ±9m 36.00 36.00 44 16 0 0 compass direction 183
magnetic small stream diversion on upper East;
some snails
45 77.5 87.5 75 85 230 9V 664-471 659-1576 ±10m 37.00 37.00 46 6 34 6 compass direction 175 magnetic
46 87.5 97.5 85 95 225 9V 664-472 659-1567 ±7m 39.00 39.00 25 3.5 225 19 compass direction 222 magnetic stream takes curve to West here had to stop as sediment too soft to walk
Lower Alpha Pool                   36.00   23       most at undercut area on South-West bank
Upper Alpha Pool                   42.8 - 48   0        
Beta Pool   post
post		       9V 664-271 659-1889 ±9m 41.50   4
16		 1
1		     on deck support structures
Beta Pool   Area A               38.00   550 11     behind log on north bank near exit stream
Beta Pool   Area B               36.00   340 6     on north bank at exit stream;
eggs on wood

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2018-01-02