[NatureNS] goldfish question

From: David & Alison Webster <dwebster@glinx.com>
To: naturens@chebucto.ns.ca
References: <BB70A87CFE8B8B4597E5A9D5EDDAB6FB3A7BC0AA@AS446.prov.gov.ns.ca>
Date: Thu, 07 May 2015 11:39:49 -0300
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Return-Path: <naturens-mml-owner@chebucto.ns.ca>
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ears ago, folks in the know advised me that pickerel and bass had en
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Hi Darrell & All,                        May 7, 2015
    Over the last 65 years just about all of the formerly highly =
productive Trout streams in Kings County have become dead water.=20

    Streamflow instability, siltation from careless highway widening, =
erosion from extensive clearcuts or cultivated land, abnormal nutrient =
influx and acid rain are probable contributing factors, depending upon =
the settiing and there may be other unsuspected causes but in the =
complete absence of Bass, now or previously, they are excluded.

    If this kind of disaster can happen in the absence of Bass it could =
be rushing to judgment to blame Bass where they are present. They are =
tolerant of warm, sluggish water (low O2 I suspect) so would be expected =
to survive where Trout do not.

    I don't know Lake Egmont but I notice there are roads along three =
sides and one of these is just along the eastern side. The topography =
suggests water fed in from swamp brooks as opposed to spring fed so I =
wonder how ir fares in dry periods.

    When we first had a cottage at Sunken Lake in 1971 the walls and =
windows were shingled with swarms of insects when lights were on at =
night and the shallows in season had mob of Penny Toads and schools of =
Minnows. By 1995 insects, Toads and Minnows were very sparse.=20

    In all questions it is far better to iterate to the truth than to =
identify a possibly innocent culprit.=20

    Yt, Dave Webster, Kentville

  ----- Original Message -----    =20
  From: darrell@abolitphotos.ca=20
  To: naturens@chebucto.ns.ca=20
  Sent: Tuesday, May 05, 2015 6:12 PM
  Subject: Re: [NatureNS] goldfish question


  Smallmouth basically wipe out trout, has happened in Lake Egmont and =
other lakes coming off the Shubenacadie River. Lake Egmont used to be =
flourshing in trout, not since tha bass entered. The the Pickerel =
entered about 4 years later than the smallmouthand that is all she =
wrote.



  The only trout now are on our eastern shore watersheds and they are in =
danger I hear from smallmouth, sad indeed.



  All the best,

  Darrell





  --------------------------------

  On Tue, 05 May 2015 15:32:15 -0300, David & Alison Webster =
<dwebster@glinx.com> wrote:

    Hi John & All,
        I think the reputation of Small-mouth Bass has been sullied by =
zenophobia; introduced and therefore bad. I asked on Naturens shortly =
after I joined, for proof that they were harmful and received only =
fluff.
        They flourish where Trout can not survive, are fun to catch and, =
when skinned and filletted, are good eating. I have never encountered =
Bass in likely Trout water. In marginal water large Bass may eat small =
Trout but I would suppose that large Trout would do likewise.
        Plants and animals should be judged on properties and effects =
not origin.
    Yt, Dave Webster, Kentville

      ----- Original Message -----
      From: John and Nhung=20
      To: naturens@chebucto.ns.ca=20
      Sent: Monday, May 04, 2015 12:36 PM
      Subject: RE: [NatureNS] goldfish question

      Have never heard of any goldfish or carp down Yarmouth way.  A =
former German was interested in growing carp for the European market =
35-odd years ago. I expressed grave doubt that he could get the permits. =
 Don=E2=80=99t think anything happened.





      Will try to remember to pass along any news on this and will keep =
ears open.





      We gotta start eating and encouraging more people to eat pickerel =
and smallmouth bass! No more fish intros., please!







      From: naturens-owner@chebucto.ns.ca =
[mailto:naturens-owner@chebucto.ns.ca] On Behalf Of Hebda, Andrew J
      Sent: May 4, 2015 10:01 AM
      To: 'naturens@chebucto.ns.ca'
      Cc: Gilhen, John A
      Subject: [NatureNS] goldfish question





      At the Museum, we have been trying to determine the distribution =
of goldfish within the Province.





      We would appreciate any geo-reference reports on their occurrence =
.   If anyone has such data, would appreciate if they could contact me.





      Regards





      Andrew





      A Hebda



      MNSM Collections (Zoology)












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<DIV>Hi Darrell &amp; All,&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;=20
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; =
&nbsp;&nbsp;&nbsp; May=20
7, 2015</DIV>
<DIV>&nbsp;&nbsp;&nbsp; Over the last 65 years just about all of the =
formerly=20
highly productive Trout streams in Kings County have become dead water. =
</DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;&nbsp;&nbsp; Streamflow&nbsp;instability, siltation from =
careless=20
highway widening, erosion from extensive clearcuts or cultivated=20
land,&nbsp;abnormal nutrient influx&nbsp;and acid rain are probable =
contributing=20
factors, depending upon the settiing and there may be other unsuspected =
causes=20
but in the complete absence of Bass, now or previously, they are =
excluded.</DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;&nbsp;&nbsp; If this kind of disaster can happen in the =
absence of=20
Bass it&nbsp;could be&nbsp;rushing to judgment to blame Bass where =
they&nbsp;are=20
present. They are tolerant of warm, sluggish water (low O2 I suspect) so =
would=20
be expected to survive where Trout do not.</DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;&nbsp;&nbsp; I don't know Lake Egmont but I notice there are =
roads=20
along three sides and one of these is just along the eastern side. The=20
topography suggests water fed in from swamp brooks as opposed to spring =
fed so I=20
wonder how ir fares in dry periods.</DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;&nbsp;&nbsp; When we first had a cotta