Register now on PaFlyFish.com! Login
HOME FORUM BLOG PHOTOS LINKS


Sponsors

Browsing this Thread:   1 Anonymous Users



(1) 2 »


Once again a wild BT population blossoms on a stocked trout stream

Joined:
2006/11/10 8:32
Posts: 1739
Offline
A December electrofishing survey on a stocked trout/wild trout stream was conducted in York County. This stream has been stocked since the 1950’s and has now developed a substantial wild Brown Trout population. Biological surveys occurred at the same sampling site in 1978, 1996, and 2013. In 1978, one trout was captured in 300 m of electrofishing. It is unknown whether it was stocked or wild. In 1995, 16 wild trout were captured in 230 m of electrofishing. In December, 2013, 99 wild Brown Trout were captured in the first of three electrofishing passes through 284 m of the stream. The 2013 biomass was 60 kg/ha, the equivalent of a Class A biomass. The abundance of 9 inch and longer wild Brown Trout per mile exceeded the statewide 90th percentile for that statistic, indicating along with the biomass an excellent wild Brown Trout population.

By the way, the sampling site began at a bridge, which is typically attractive to anglers, and effectively overlapped all or part of a stocking point.

Posted on: 1/4 13:34


Re: Once again a wild BT population blossoms on a stocked trout stream

Joined:
2006/9/13 10:18
From LV
Posts: 7656
Offline
Good Stuff Mike, keep it coming.

Posted on: 1/4 14:19
_________________
There is always time to do more to protect wild trout.


Re: Once again a wild BT population blossoms on a stocked trout stream
Moderator
Joined:
2006/9/9 17:32
From Gettysburg
Posts: 9198
Offline
More evidence of the wild trout boom across central PA.

Mike,
Care to hazard a theory to explain the increased wild BT biomass in this particular waterway?

Also, with Class A biomass now, this section would be a good candidate for removal from stocking in keeping with the PFBC need to identify streams for an abatement of stocking. Or, if not complete removal, then perhaps a 50% reduction in number of stocked fish or just drop this section from the in-season stocking.

Anyway......some more good news.

Posted on: 1/4 17:42


Re: Once again a wild BT population blossoms on a stocked trout stream

Joined:
2006/11/2 8:50
Posts: 6209
Online
Quote:

Fishidiot wrote:

Mike,
Care to hazard a theory to explain the increased wild BT biomass in this particular waterway?



Yes. What caused the increase in the wild trout population?

And why was that info left out? It wasn't considered important?


Posted on: 1/4 19:00


Re: Once again a wild BT population blossoms on a stocked trout stream

Joined:
2012/10/24 19:22
From Landenberg, PA
Posts: 1560
Offline
Rather than ceasing stocking, I would think that fingerlings would be a good way to supplement the existing wild pop.


Posted on: 1/4 19:06
_________________
nowhere is so sweet, as the bosom of the vale where the bright waters meet.


Re: Once again a wild BT population blossoms on a stocked trout stream
Moderator
Joined:
2006/9/9 17:32
From Gettysburg
Posts: 9198
Offline
Again - this is good news. I'm certainly not trying to hijack this thread into another monster debate about stocking vs wild trout.

However, this particular case is worth talking about as I'm convinced stories like this aren't isolated. Wild trout populations are doing very well in central PA and for reasons I cannot begin to explain. I think what you're seeing here: a small stream with little if any change in management strategy goes from virtually no wild fish to Class A in a generation is not that unusual. Why did it improve so much? I can only speculate. Hopefully Mike will proffer an opinion on this. However, considering these findings, there's two ways to look at this:

1) That this stream demonstrates that we can have the best of both worlds; that stocking can continue on a presumably popular put and take fishery and, at the same time, wild trout can thrive in high numbers in that same waterway despite stocking and provide the sort of quality fishery most of us on this forum appreciate.

2) The other view is that a case like this - where wild trout suddenly emerge in good numbers in a stream section previously without them - is tailor made for the transition that was originally envisioned in Operation Future; that streams newly identified with Class A biomass should not be stocked because they don't need to be regardless of the "social" conditions surrounding the stream (ie. it was a popular put and take fishery with traditional anglers).

Of the two points of view above......I lean in favor of "2" but recognize the reality of "1."

Posted on: 1/4 19:25


Re: Once again a wild BT population blossoms on a stocked trout stream

Joined:
2006/11/2 8:50
Posts: 6209
Online
Quote:

Fishidiot wrote:
Again - this is good news. I'm certainly not trying to hijack this thread into another monster debate about stocking vs wild trout.


I don't think it's hijacking. Because it's not changing the subject. The OP makes another argument/assertion in the long running debate.

Posted on: 1/4 20:19


Re: Once again a wild BT population blossoms on a stocked trout stream

Joined:
2006/11/10 8:32
Posts: 1739
Offline
Gradual improvement in water temperatures over time as reflected in changes in fish community composition.

Posted on: 1/4 21:34


Re: Once again a wild BT population blossoms on a stocked trout stream

Joined:
2010/1/2 15:17
From PA and NH
Posts: 750
Offline
Water temperature and quality perhaps? Substantial increase in food availability?

Posted on: 1/4 22:30


Re: Once again a wild BT population blossoms on a stocked trout stream

Joined:
2006/11/2 8:50
Posts: 6209
Online
What caused the change in water temperatures?

A great deal of what has been tried to improve trout populations has not worked. But something worked here.

What worked on this stream could be applied to other streams.

Posted on: 1/4 23:00


Re: Once again a wild BT population blossoms on a stocked trout stream
Moderator
Joined:
2006/9/9 17:32
From Gettysburg
Posts: 9198
Offline
It seems to me that much of the landscape in central PA - this is esp true on the CV limestoners - is more forested and thus a bit more shaded than 30 yrs ago. I think there's also better control of storm water in many communities around here as well. Perhaps these factors - they're so gradual they often go unnoticed - may be playing a role in improved water temps across central PA, and maybe this stream in particular.

Posted on: 1/4 23:17


Re: Once again a wild BT population blossoms on a stocked trout stream
Moderator
Joined:
2006/9/11 8:26
From Chester County
Posts: 9020
Offline
The Clean Water Act, which applied to the surface waters of the
United States, went beyond protection and sought restoration of
our nation’s waterways. Restoration of polluted waterways was
a relatively new concept in 1972. Pennsylvania’s Clean Streams
Law
, passed in 1937 to protect “clean” waters from becoming
polluted, did not require that polluted waters be restored.

Nearly thirty years passed before the Clean Streams Law was
amended to include the goal “to reclaim and restore to a clean
unpolluted condition every stream in Pennsylvania that is
presently polluted.”
Pennsylvania’s Clean Streams Law was
further amended in 1970 to state that the discharge of materials
contributing to pollution was against public policy and
constituted a public nuisance.

The Clean Water Act provides for the delegation of authority
to states. In 1978, the EPA determined that Pennsylvania’s
Clean Streams Law met the minimum requirements of the Clean
Water Act and delegated to the Commonwealth the power to
implement the provisions of the federal law. Pennsylvania
regulations meet and in many respects exceed federal law. The
Pennsylvania Department of Environmental Protection is
designated as the state agency with authority to enforce the
powers of the Clean Water Act, however municipal
governments play a key role protecting water quality and in
meeting the water quality goals of the Clean Water Act.

Like the 1899 Rivers and Harbors Act and the 1972 Clean
Water Act, laws protecting water quality have generally
originated at the federal level and primarily addressed point
source pollution, leaving the regulation of nonpoint source
pollution to state governments. Water quantity and water supply
protections have also been left primarily to the states. By
contrast, zoning and land use management decisions have
generally been left to the control of local government.
In Pennsylvania, local governments, or municipal
corporations, include cities, boroughs, incorporated towns, and
townships of the first or second class. Each of these local
government structures is a creation of the state and “may
exercise any power or perform any function not denied by this
Constitution, by its home rule charter or by the General
Assembly at any time.”

Express powers, such as the power to
enact zoning provisions that protect public health and safety,
preserve natural, historic, and agricultural resources, and
prevent damage from flooding can also be exercised by
Pennsylvania’s local governments.

Guberment regs gone wild....

Thank the pollies (with some foresight) for doing the right thing.

Decades later, we are seeing some of the positive results, IMHO.


Posted on: 1/5 9:15


Re: Once again a wild BT population blossoms on a stocked trout stream

Joined:
2006/11/2 8:50
Posts: 6209
Online
I would not assume that government regulations or actions had anything to do with it.

We don't know what happened there. That information has not been stated.

It may simply be that the stream used to be "cow bombed" from severe over-grazing by dairy cows. And now the land use/ownership has changed and there are no longer cows grazing there. That can completely transform a stream, and pretty quickly.


Posted on: 1/5 9:51


Re: Once again a wild BT population blossoms on a stocked trout stream

Joined:
2006/11/10 8:32
Posts: 1739
Offline
Increased shade (vegetation establishment and maturation) over time in the fallow riparian areas a mile or two above the woodlands where the sampling site has always been located. This has been a common theme in SE Pa where wild trout have appeared or extended farther downstream.

Posted on: 1/5 10:14


Re: Once again a wild BT population blossoms on a stocked trout stream
Moderator
Joined:
2006/9/11 8:26
From Chester County
Posts: 9020
Offline
From the OP title Re: Once again a wild BT population blossoms on a stocked trout stream

Not necessarily looking just at this one stream....looking at the big picture in PA. This report is one of many about more and more wild trout being discovered in streams that had little or no wild trout reproduction in just about every region of the State.

Overall cleaner water and cleaner air as well as better management and oversight of the resources is bearing the fruit (the fish)...I believe so.

I would ask every one of us that cares about our streams and rivers in PA to be vigilant, and not let the current administration roll back all the progress that has been made.

Beware of lame ducks and anyone claiming to do things in the name of "jobs." The "job" you actually get may be not what you really wanted or expected.

Posted on: 1/5 10:40



(1) 2 »



You can view topic.
You cannot start a new topic.
You cannot reply to posts.
You cannot edit your posts.
You cannot delete your posts.
You cannot add new polls.
You cannot vote in polls.
You cannot attach files to posts.
You cannot post without approval.

[Advanced Search]





Site Content
Login
Username:

Password:

Remember me



Lost Password?

Register now!
Stay Connected

twitterfeed.com facebook instagram RSS Feed

Sponsors
Polls
Will you be fly fishing this autumn?
Yes
No
Thinking about it
_PL_TOTALVOTES
The poll will close at 2014/10/31 17:56
Comments?





Copyright 2014 by PaFlyFish.com | Privacy Policy| Provided by Kile Media Group | Design by 7dana.com