Archive for the ‘River Report’ Category

Reports of fish but nothing caught

Friday, April 6th, 2012

These bulletin blogs represent news about Finavon and the South Esk, and my views as a riparian owner. They are not the views of any other organisation, nor are they designed to promote the interests of any individual or organisation other than Finavon Castle Water and factors affecting the fishery.  Tony Andrews

It is unfortunate that some people, whose words are currently in the public domain, describe the work being done to track the riparian destination of the South Esk’s early running salmon as a “waste of time”. I hope that my readers will ignore those statements because, in my view, they are based on ignorance and a lack of understanding of the role of scientific data in providing fishery managers with the information they need to make relevant and timely decisions to conserve, and ultimately enhance, the river’s stocks of wild salmon and sea trout.

Castle Stream

Castle Stream

In addition to their lack of understanding of the role of science, these critics of the Marine Scotland S Esk stock assessment project are I imagine frustrated by the time it takes to obtain meaningful data. Perhaps they may one day accept the principle that knowledge (ie scientific data) is a better basis for taking action than unfounded guesswork!

The 2012 Spring Run. While it is true that the South Esk’s 2012 run of spring fish have so far been disappointing, I note that small numbers of fish have entered the river, some of which have moved up above Brechin and some caught and returned alive. Inshewan reported an 8lbs fish this week, and a fresh fish of 12 to 15lbs was hooked and lost in Melgund Pool (Indies Beat, FCW) earlier today (Friday) following a slight rise in the river level, largely as a result of snowmelt. It is also true that when rivers are very low salmon are often reluctant to enter them and to move on upstream. The 2012 spring has featured a period of very low water. It is therefore manifestly wrong to attribute the lack of fish caught by the very few rods that have ventured out this season to low pre-fishery abundance. As I have said before in these blogs; rod catches, in the absence of other data, can provide useful information about stock abundance, but we should not base our planning and management decisions on rod catches alone.

Onshore winds. With a strong East wind, and surf churning up gravel and sand in the estuary, and with cold water exiting the river, combined with low river levels, it is really not surprising that the bulk of the spring run has stayed at sea. Julian Maclean told me today that no fish have been caught in the nets during the last week, which I can imagine was no surprise to George Pullar, nor the MSS team because salmon generally keep away from the coast when the wind is in the East. To date no tagged fish have been recorded by receivers on Tay, Dee or North Esk, only on the South Esk.

Red Brae in very early spring

Red Brae

It is worth noting that of the 47 fish so far radio tagged, 9 have been recorded going up the South Esk of which 3 have returned to Montrose Basin. In other words, these 3 fish were recorded as moving downstream of the lowest receiver at Bridge of Dun having previously been recorded at Kinnaird. If we get a good rise in water level, a change in wind direction and warmer temperatures, we should see more fish enter the river. Our three ‘Hamlet’ fish may even decide to return!

The Big Picture – the Ocean ecosystem. An ecologist at the Institute of Marine Research in Bergen, Norway, who was the coordinator of the multinational SALSEA project, last week answered a question for me about predicting salmon runs. I asked him about the 2012 run of salmon into our Scottish East coast rivers. His reply surprised me on two counts: first, he was prepared to make a prediction, which is quite unusual for a high level scientist. Second, he said that we should expect more multi sea winter salmon in good condition and that this trend – more bigger salmon – is likely to continue for the next few years. He was less sanguine about grilse returns and would not be drawn on the overall pre fishery abundance figures. I took that to mean that the cake is no bigger, but that marine survival of certain groups of fish may be improving. Interesting stuff, but maybe we shouldn’t get too excited!

If our media quoted luddites could find a way of acknowledging the significance of facts about the spring migration provided by recordings of South Esk spring salmon, and give their full support to the work of the Montrose team of scientists, we would all be in a better place. Ultimately, if that unlikely situation were to arise, the beneficiary would be the river and its stocks of migratory salmonids. Here’s hoping!

TA on 6 April 2012

 

Salmon forge upriver

Monday, April 2nd, 2012

These bulletin blogs represent news about Finavon and the South Esk, and my views as a riparian owner. They are not the views of any other organisation, nor are they designed to promote the interests of any individual or organisation other than Finavon Castle Water and factors affecting the fishery.  Tony Andrews

I spoke with Colin Gibb (Inshewan – 5 miles upstream of Finavon) yesterday about this year’s spring run. He told me that there is a good number of fish in the Esk Pool and that he had seen two fish in the Dardanelles last week. There are also a few kelts lingering in the Castle Hill and the Boat Pool.

The spring run of 2012 in context: The radio-tagged salmon are of course only a small proportion of the total number of salmon entering the South Esk. A few have already been caught by rods as far upriver as Justinhaugh, and, judging by Colin’s Inshewan report, and accounts from the Marine Scotland team of untagged fish released from the Usan nets, we can assume that there may be quite a good number of fish already in the river, with an increasing number waiting in the sea for higher water levels. We should remember that the purpose of the MSS radio tagging project is to find out where the S. Esk’s early running fish go to spawn. Counting them will come later, but that should not prevent us making every effort now to estimate abundance of stocks of both salmon and sea trout.

Latest radio tagging news: The news from our Montrose scientists is that another 8 fish were radio-tagged last week, bringing the total of tagged spring salmon to 47. Of those 47 fish, 8 have now entered the South Esk, with one of those fish dropping back into Montrose Basin. All the fish appear to be in good condition but the numbers seen in the nets in late February and early March have dropped away, so that the target of 11 rasdio-tagged fish for the week ending 31/3 was not met.

Two salmon have migrated upstream and were recorded by the receiver at Haughs of Finavon. The first of these two fish passed the Haughs of Finavon receiver on 27 March and was later recorded at Tannadice. The second salmon was recorded by the Haughs receiver on the 28th of March and is probably lying in one of Finavon’s holding pools.

What surprises me about these reports is that a significant number of spring salmon are entering and travelling a fair distance up the river, even in these dead low water levels. The fact that these fish are making it well upriver (15 to 20 miles, and maybe more) should remind us of how resilient and determined these fish are. Salmon never cease to amaze me. Who would have believed that a good run of fish could take place through the thin stickles of the river in its present condition?

No tagged fish have yet been recorded by receivers on Dee, Tay or North Esk.

TA on 2 April 2012

Summer low and more springers in the South Esk

Monday, March 26th, 2012

These bulletin blogs represent news about Finavon and the South Esk, and my views as a riparian owner. They are not the views of any other organisation, nor are they designed to promote the interests of any individual or organisation other than Finavon Castle Water and factors affecting the fishery.  Tony Andrews

Last week the Marine Scotland team tagged a further 8 salmon, all hand-picked by MSS scientists in the boat with the Usan Fisheries netting crew. To date 39 spring salmon have been tagged and good numbers seen. No fish of under 60cms in length (tip of the nose to middle of the tail fork) has been tagged. Tagged fish are all 70cms or more in length. Some are 2SW and some 3SW.

Of the 39 salmon so far tagged, seven have entered the river and been tracked as far as the Kinnaird dyke. It is possible that some fish may have crossed the dyke and are hunkered down in the stretch between there and the next receiver upstream, which is quite a way upriver, close to Brechin. One fish was recorded by the Kinnaird receiver and has since dropped back, to be recorded for a second time by the receiver at Bridge of Dun. It is not known whether this fish has headed back out to sea.

No fish have been recorded in Dee, Tay or North Esk, where receivers lie in wait to track them, should they choose to enter those rivers.  With salmon so far tracked only into the South Esk (including our ‘Hamlet’ fish, which doesn’t seem to be quite sure where it is going!) we are at present not looking at a mixed stocks (multi rivers) scenario, although I am in no doubt that we will get evidence for that in due course. What we can say with certainty is that 17.9% of the spring salmon tagged from Usan nets to date have chosen to enter the South Esk. Because the river is so low it is more than likely that the other 32 tagged salmon will still be in the sea waiting the arrival of a spring freshet to ‘call’ them into the river. Of course, the longer they stay milling about in the sea, the more vulnerable to predation they will be.

If you combine the number of tagged fish with with the encouraging number of salmon being seen in the nets by MSS scientists, from which they have been able to select the best ones for tagging, it is clear that a useful spring run of 2SW and 3SW salmon exists, although we know very little about its abundance. Putting some numbers on these valuable, early running fish is our next challenge.

One final point: in my weekly chat with our scientist friends in Montrose I always ask about the condition of the fish they have seen in the Usan nets. So far all the reports have been good: spring salmon in robust condition, apparently with plenty of body fat to see them through to spawning next winter.

To summarise, we are seeing encouraging numbers of salmon, a good proportion of which may ‘belong’ to the South Esk, and they appear to be in good nick. If the water levels were higher I am in no doubt that we would already have counted a few more salmon into the River.

TA on 26/3/2012