The Science of Felt

[BN2FSH]

Recently, much has been posted in the internet about the upcoming Alaska ban on felt soles on wading boots. Here is an informative piece about the science of felt.


http://www.stopans.org/Science_of_felt.php

[kglissmeyer]

Excellent article and info. Thanks for getting it out there.

Kelly.

[Tyro]

A nice source of information. Thanks for posting that.

[Silver Creek]

It is important to realize that the article answers just one question, does felt carry more invasives than rubber. It should not be taken that rubber soles are a solution to the problem of invasives. Unfortunately, many reading that paper will get that impression. They will think that if they switch to rubber from felt, they have done their part. WRONG.

In the white paper that is referenced in the article, the first line recommended defense is:

"Fresh water resource users, including ecologists, water managers, fishery biologists, and other scientists, need to be aware of the threat and should practice decontamination procedures to prevent the spread."

The problem I see is that there is greater issue that is being pushed aside under the guise that banning felt is solving the issue of invasives. That paper and others I have ready have not presented a single manufacturer's approved method of decontaminating for ALL invasives.

The issue is not just Didymo. It is Whirling disease. It is Zebra Mussels. It is New Zealand Mud Snails. Some species like Whirling Disease have a spore phase that is resistant to drying. Other's like the New Zealand Mud Snail work their way into locations well away from felt soles and into areas not normally inspected like under the insoles of wading boots.

"The majority of NZMS recovered were associated with wading boots. NZMS were observed on the tongue area of wading boots, associated with the laces or the area of the tongue that was tucked beneath the lacing eyelets. Large numbers of small NZMS were present inside of the boots, having worked down between the boot and the neoprene bootie of the wader. If the boots contained padded insole inserts, NZMS were also found underneath the inserts, associated with sand grains. NZMS were recovered from every treated set of wading gear. Numbers of NZMS per sample ranged from 1 to 227 with a mean of 33 (Appendix 2). Over 50% of NZMS recovered were < 1 mm in size (Table 4)."

http://www.scwa2.com/documents/NZMS/...eport%2003.pdf

"The (Whirling Disease) myxospores can tolerate freezing at -20 centigrade for at least 3 months and are still viable after the passage through the guts of predators.... There have been reports from Europe of myxospores remaining viable in dry pond beds for 12 years(Bauer 1962). "

http://wildlife.utah.gov/fes/pdf_pubs/2002_06.pdf

In the second paper that is referenced on WD states, "The contents of the myxospore are sealed by a protective shell making the myxospore highly resistant to stresses such as smoking (Wolf and Markiw 1982), aging, freezing, chemical exposure, and digestion by fish-eating birds and fish (Hoffman and Putz 1969; El-Matbouli and Hoffmann 1991). The myxospore can withstand temperatures from -20? C to 60? C (Hoffman and Putz 1971; Hoffman and Markiw 1977) and can resist biodegradation for years while retaining its infectivity (Halliday 1976). These resilient features of the myxospore make it likely that it will persist in an environment until it is ingested by the oligochaete host."

http://etd.lib.montana.edu/etd/2007/...GatesK0507.pdf

Until there is a single environmentally safe and manufacturer approved way of decontamination, the felt boot ban is not going to work. It gives a false sense of security. It relieves the pressure on manufacturers to give us a viable method of decontamination. It lets them off the hook because they are "doing their part". I say NO! they are doing their part UNTIL they give us a single reliable, safe and convenient method that all anglers will use, regardless of the type of wading gear.

It's like this. Would you allow a surgeon to operate on you if he used gloves with tiny holes that do not completely remove the risk of infection, but lower it to the risk that using rubber soled boots do for dydimo? I would demand a way to completely remove the risk of infection. Lacking a single way of decontamination, the only way to do that is with a completely separate set of wading gear for each environment, felt or no felt.

It is sad that the manufacturer's are touting the felt ban as a solution, and the assumption is that they are doing their part. Decontamination is MORE important than any felt ban, and they have not done their part to give use a single approved method that will kill all invasive that is safe for the materials and manufacturing methods used their equipment.

One of the best methods of reducing invasives is one that is rarely mentioned. That is the boot foot waders that completely eliminate the wading boot. It eliminates the possibility of getting invasives into the innards of a separate wading boot. It eliminates laces and a lot of the fabric on the wading boot. Why don't manufacturer's tout boot foot waders? Could it be that they want to sell both boots and waders? If separate boots are a problem as well as the felt, get rid of the separate boot. DUH?

If you think bleach is the solution, it is one of the most destructive chemicals for wading gear read the test below. Although the test below used a high concentration of bleach, lower concentrations destroy gear, but at a slower rate:

http://www.scwa2.com/documents/NZMS/...eport%2003.pdf

[flybugpa]

Did anyone ever consider migratory waterfowl carrying eggs of invasives ?

[Marco]

Flybugpa,
And THAT is another great reason why WE can do little but posture when it comes to the whims of "mother" nature. It's not to say what we do is useless but.....................................the fact remains.



Mark

[Silver Creek]

Did anyone ever consider migratory waterfowl carrying eggs of invasives ?

Indeed they do.

But having admitted that, the fact remains that MAN is the primary vector for the spread of invasives. A "hot" spot analysis of new outbreaks coincides with the areas that are popular fishing spots. That is not too surprising. It takes a jet propelled "bird" to get from New Zealand to North America.

Lets get real and tell folks the truth. Invasives will ultimately do what invasives do - SPREAD. All we are doing is SLOWING the spread.

We can't even get fisher's to stop throwing garbage along the rivers, and we are going to get ALL of them to decontaminate their gear?

[NJTroutbum]

Take a problem....throw an activist at it?.....and the next thing you know you have an "epedemic".

Can we help spread things? Sure. Will outlawing felt soles solve it? Probably not. But it will sell a heckuvalot more wading boots:^) I would imagine, much like stillwater....boats are probably a much bigger problem than felt soled wading boots?