The new River Ettrick fish counter - James Hunt
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![Species apportionment – method 2
Length [cm] 2008 2009 2010 2011 2012 max min Median
20-24 0.00 0.00 0.00 0.00 0.00 0.00 0.00
25-29 0.00 0.00 0.00 0.00 0.00 0.00 0.00
30-34 0.00 0.01 0.00 0.00 0.01 0.00 0.01
35-39 0.09 0.17 0.09 0.08 0.17 0.08 0.13
40-44 0.18 0.21 0.14 0.28 0.28 0.14 0.21
45-49 0.25 0.19 0.28 0.23 0.28 0.19 0.24
50-54 0.42 0.24 0.39 0.23 0.42 0.23 0.33
55-59 0.41 0.38 0.33 0.40 0.41 0.33 0.37
60-64 0.46 0.43 0.43 0.37 0.46 0.37 0.41
65-69 0.50 0.39 0.48 0.49 0.50 0.39 0.44
70-74 0.58 0.37 0.60 0.65 0.65 0.37 0.51
75-79 0.62 0.58 0.60 0.76 0.76 0.58 0.67
80-84 0.76 0.44 0.68 0.87 0.87 0.44 0.66
85-89 0.92 0.42 0.78 0.90 0.92 0.42 0.67
90-94 0.67 0.67 0.79 0.88 0.88 0.67 0.77
95-99 0.67 1.00 0.80 1.00 0.67 0.83
100-104 1.00 1.00 1.00 1.00
105-109 1.00 0.00 1.00 1.00 1.00 1.00
110-114 1.00 1.00 1.00
115-119 1.00 1.00 1.00
120-124 1.00 1.00 1.00
Annual Salmon proportions averaged for
each length class](https://image.slidesharecdn.com/thenewettrickfishcounter-jameshunt-190212161029/75/the-new-river-ettrick-fish-counter-james-hunt-16-2048.jpg?cb=1671782707)
The new River Ettrick fish counter - James Hunt
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The new River Ettrick fish counter - James Hunt
- 1. The new Ettrick fish counter
- 4. The value of fish counters Actual numbers It’s not just about Salmon! Fish size does matterRun timing How many is enough?
- 6. Disintegration of the cauld face 2005-2009
- 10. September 2013
- 11. July 2014
- 12. The previous Ettrick counter August 1997 – Installation of fish counter scanner 2004
- 15. Species apportionment – method 1 Length Number 60-65 0.7 Salmon proportion Length Number 60-65 0.3 Trout proportion Length Number 60-65 35 Salmon Length Number 60-65 15 Trout Length Number 60-65 50 Generic X = For each length interval in each month, proportion of Salmon and Trout applied to each corresponding generic value.
- 16. Species apportionment – method 2 Length [cm] 2008 2009 2010 2011 2012 max min Median 20-24 0.00 0.00 0.00 0.00 0.00 0.00 0.00 25-29 0.00 0.00 0.00 0.00 0.00 0.00 0.00 30-34 0.00 0.01 0.00 0.00 0.01 0.00 0.01 35-39 0.09 0.17 0.09 0.08 0.17 0.08 0.13 40-44 0.18 0.21 0.14 0.28 0.28 0.14 0.21 45-49 0.25 0.19 0.28 0.23 0.28 0.19 0.24 50-54 0.42 0.24 0.39 0.23 0.42 0.23 0.33 55-59 0.41 0.38 0.33 0.40 0.41 0.33 0.37 60-64 0.46 0.43 0.43 0.37 0.46 0.37 0.41 65-69 0.50 0.39 0.48 0.49 0.50 0.39 0.44 70-74 0.58 0.37 0.60 0.65 0.65 0.37 0.51 75-79 0.62 0.58 0.60 0.76 0.76 0.58 0.67 80-84 0.76 0.44 0.68 0.87 0.87 0.44 0.66 85-89 0.92 0.42 0.78 0.90 0.92 0.42 0.67 90-94 0.67 0.67 0.79 0.88 0.88 0.67 0.77 95-99 0.67 1.00 0.80 1.00 0.67 0.83 100-104 1.00 1.00 1.00 1.00 105-109 1.00 0.00 1.00 1.00 1.00 1.00 110-114 1.00 1.00 1.00 115-119 1.00 1.00 1.00 120-124 1.00 1.00 1.00 Annual Salmon proportions averaged for each length class
- 18. The new fish counter
- 20. 5130 4331 3543 3880 2982 3474 4322 4051 2866 2954 3639 0 1000 2000 3000 4000 5000 6000 1999 2000 2001 2002 2003 2004 2005 2006 2007* 2008 2009 2018 Number of fish Year Salmon total
- 21. 5130 4331 3543 3880 2982 3474 4322 4051 2866 2954 3639 1133 0 1000 2000 3000 4000 5000 6000 1999 2000 2001 2002 2003 2004 2005 2006 2007* 2008 2009 2018 Number of fish Year Salmon total Salmon total
- 22. 5130 4331 3543 3880 2982 3474 4322 4051 2866 2954 3639 1133 0 5,000,000 10,000,000 15,000,000 20,000,000 25,000,000 0 1000 2000 3000 4000 5000 6000 1999 2000 2001 2002 2003 2004 2005 2006 2007* 2008 2009 2018 Number of eggsNumber of fish Year Salmon total Egg total
- 23. 5130 4331 3543 3880 2982 3474 4322 4051 2866 2954 3639 1133 0 5,000,000 10,000,000 15,000,000 20,000,000 25,000,000 0 1000 2000 3000 4000 5000 6000 1999 2000 2001 2002 2003 2004 2005 2006 2007* 2008 2009 2018 Number of eggsNumber of fish Year Salmon total Egg total Target for 500 eggs per 100m2 Target for 700 eggs per 100m2
- 24. River Conservation Limit (eggs per 100 m²) River Conservation Limit (eggs per 100 m²) 1 Coquet 218 21 Tamar 395 2 Tyne 208 22 Lynher 233 3 Wear 250 23 Fowey 207 4 Tees 240 24 Camel 176 5 Esk-Yorks 236 25 Taw 211 6 Test 246 26 Torridge 207 7 Itchen 234 27 Lyn 359 8 Avon-Hants 175 28 Severn 143 9 Stour 149 29 Ribble 242 10 Piddle 177 30 Wyre 70 11 Frome 171 31 Lune 280 12 Axe 175 32 Kent 223 13 Exe 253 33 Leven 182 14 Teign 251 34 Duddon (and Lickle) 121 15 Dart 218 35 Esk 181 16 Avon-Devon 202 36 Irt 198 17 Erme 180 37 Ehen 230 18 Yealm 212 38 Derwent 185 19 Plym 188 39 Eden 200 20 Tavy 201 40 Esk-Border 255
- 25. 5130 4331 3543 3880 2982 3474 4322 4051 2866 2954 3639 1133 0 5,000,000 10,000,000 15,000,000 20,000,000 25,000,000 0 1000 2000 3000 4000 5000 6000 1999 2000 2001 2002 2003 2004 2005 2006 2007* 2008 2009 2018 Number of eggsNumber of fish Year Salmon total Egg total Target for 500 eggs per 100m2 Target for 700 eggs per 100m2 Target for 250 eggs per 100 m2"