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------=_Part_1835707_1543934039.1419722822717
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From: Field Guide to Aquatic Invasive Species 3rd Edition Identification, c=
ollection and reporting of aquatic invasive species in Ontario waters (2010=
) (Available as PDF, Google Title):
Habitat: Rooted in silty substrate of stagnant to slow flowing waters in st=
reams, small rivers, ponds, lakes, and ditches4. Occurs in permanent shallo=
w water, usually less than 3 m but up to about 5 m deep in Ontario3,5. Pref=
ers low pH (4-6) but may be found in alkaline waters4. The plant is able to=
overwinter and exist beneath heavy ice, retaining green leaves to spring6.
Introduced Range: In Ontario, the Crowe River watershed north of Peterborou=
gh is the only known occurrence in Canada, to date7. It is found in northea=
stern and southern United States, with occurrences in northwestern states8.=
Elsewhere, it occurs in India, Japan, Malaysia, and Australia4,9.
Native Range: Subtropic and temperate regions of South America4.
Pathway of Introduction and Spread: The first report of fanwort in Ontario =
(and Canada) was in 1991 7. The source of this introduction is not known bu=
t it is commonly sold as an aquarium plant and can escape into the environm=
ent through dumping of aquarium contents
into waterways. Also, it can spread between waterbodies via plant fragments=
that attach to boats, boat trailers and other equipment (e.g., fishing or =
scuba gear). A fragment of stem with a pair of expanded leaves can grow int=
o a new plant10.
Impacts: Fanwort is extremely persistent. It can form dense stands, displac=
ing native vegetation, clogging drainage canals and streams, and interferin=
g with recreational uses like swimming and boating. The plant can significa=
ntly reduce water storage capacity and taint
drinking water supplies.5, 11
So obviously something to both report and monitor & restrict as at all poss=
ible.=C2=A0 Thanks, Burkhard!'Would be interesting to know if it is sold lo=
cally.
From: Nicholas Hill <fernhillns@gmail.com>
To: "naturens@chebucto.ns.ca" <naturens@chebucto.ns.ca>=20
Sent: Saturday, December 27, 2014 2:34 PM
Subject: Re: [NatureNS] Frog Pond (Halifax) - Non-native Aquatic
=20
Yes, this is Cabomba and not Ceratophyllum which is closest morphologically=
.
Flora Michigan says: "A native of southeastern states from Texas to
Florida northward, this species has become established as far north as
New England and southern MI, perhaps escaped from cultivation."
"This is our only aquatic vascular plant with opposite leaves (rarely
whorled) much dissected leaves on distinct petioles (5-15 mm long on
well developed leaves). The palmate pattern of dissection results in a
characteristic fan shaped leaf." (Vos and Reznicek, 2012)
Congratulations! You should put in a note to the Canadian Field
Naturalist on the find, the conditions, maybe something on the water
quality and any development near Frog Pond.
And specimens to Acadia (Ruth Newell) and Museum (Marian Munroe).
Also might send one to ACCDC (Sean Blaney). There is no note of this
species in the ACCDC records for NS NB or PEI.
Cool
Nick
On Fri, Dec 26, 2014 at 6:35 PM, Burkhard Plache
<burkhardplache@gmail.com> wrote:
> Here is a link to a few photos of the specimens floating in clear water:
> https://www.dropbox.com/sh/5cqlzcbn93wayoh/AABLTH0_OET6amgcDO0bcvR8a?dl=
=3D0
>
> On Fri, Dec 26, 2014 at 11:04 AM, Nicholas Hill <fernhillns@gmail.com> wr=
ote:
>> Can you send an image of your aquatic?
>> No reports of Cabomba here that I can see. Have you considered the
>> bladderworts (e.g, purple bladderwort)?
>> Nick
>>
>> On Thu, Dec 25, 2014 at 1:27 PM, Burkhard Plache
>> <burkhardplache@gmail.com> wrote:
>>> For a number of weeks now, I had noticed a heavy accumulation
>>> of an aquatic herb at the shoreline of Frog Pond.
>>> Initially I assumed it might be Ceratophyllum (hornwort) or
>>> Myriophyllum (water milfoil), both reported from Nova Scotia.
>>>
>>> However, the plant has opposite leaves, which are fan-like,
>>> finely divided. I am now certain it is a species of Cabomba,
>>> most likely Cabomba caroliniana.
>>>
>>> The species is not native to NS, but used in aquariums.
>>> Maybe this introduction was the result of an aquarium dump.
>>> (Could have happened a few years back when a Gold Fish
>>> or a Koi was seen in the pond.)
>>>
>>> In other regions of the world Cabomba is a problematic
>>> invasive. Is it problematic here as well?
>>> Have people seen this in other parts of Nova Scotia?
>>>
>>>
>>> Wikipedia links to the species mentioned above:
>>> https://en.wikipedia.org/wiki/Ceratophyllum
>>> https://en.wikipedia.org/wiki/Myriophyllum
>>> https://en.wikipedia.org/wiki/Cabomba_caroliniana
------=_Part_1835707_1543934039.1419722822717
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<html><body><div style=3D"color:#000; background-color:#fff; font-family:He=
lveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, =
Lucida Grande, sans-serif;font-size:16px"><div dir=3D"ltr" id=3D"yui_3_16_0=
_1_1419721735378_5409">From: Field Guide to Aquatic Invasive Species 3rd Ed=
ition Identification, collection and reporting of aquatic invasive species =
in Ontario waters (2010) (Available as PDF, Google Title):<br></div><div id=
=3D"yui_3_16_0_1_1419721735378_5638" dir=3D"ltr"><br></div><div id=3D"yui_3=
_16_0_1_1419721735378_5410" dir=3D"ltr">Habitat: Rooted in silty substrate =
of stagnant to slow flowing waters in streams, small rivers, ponds, lakes, =
and ditches4. Occurs in permanent shallow water, usually less than 3 m but =
up to about 5 m deep in Ontario3,5. Prefers low pH (4-6) but may be found i=
n alkaline waters4. The plant is able to overwinter and exist beneath heavy=
ice, retaining green leaves to spring6.<br style=3D"" class=3D""></div><di=
v id=3D"yui_3_16_0_1_1419721735378_5411" dir=3D"ltr"><br></div><div id=3D"y=
ui_3_16_0_1_1419721735378_5412" dir=3D"ltr">Introduced Range: In Ontario, t=
he Crowe River watershed north of Peterborough is the only known occurrence=
in Canada, to date7. It is found in northeastern and southern United State=
s, with occurrences in northwestern states8. Elsewhere, it occurs in India,=
Japan, Malaysia, and Australia4,9.<br style=3D"" class=3D""></div><div id=
=3D"yui_3_16_0_1_1419721735378_5413" dir=3D"ltr"><br></div><div id=3D"yui_3=
_16_0_1_1419721735378_5414" dir=3D"ltr">Native Range: Subtropic and tempera=
te regions of South America4.</div><div id=3D"yui_3_16_0_1_1419721735378_55=
06" dir=3D"ltr"><br></div><div id=3D"yui_3_16_0_1_1419721735378_5507" dir=
=3D"ltr">Pathway of Introduction and Spread: The first report of fanwort in=
Ontario (and Canada) was in 1991 7. The source of this introduction is not=
known but it is commonly sold as an aquarium plant and can escape into the=
environment through dumping of aquarium contents<br style=3D"" class=3D"">=
into waterways. Also, it can spread between waterbodies via plant fragments=
that attach to boats, boat trailers and other equipment (e.g., fishing or =
scuba gear). A fragment of stem with a pair of expanded leaves can grow int=
o a new plant10.<br style=3D"" class=3D""></div><div id=3D"yui_3_16_0_1_141=
9721735378_5508" dir=3D"ltr"><br></div><div id=3D"yui_3_16_0_1_141972173537=
8_5509" dir=3D"ltr">Impacts: Fanwort is extremely persistent. It can form d=
ense stands, displacing native vegetation, clogging drainage canals and str=
eams, and interfering with recreational uses like swimming and boating. The=
plant can significantly reduce water storage capacity and taint<br style=
=3D"" class=3D"">drinking water supplies.5, 11<br><br></div><div id=3D"yui_=
3_16_0_1_1419721735378_5319"><div id=3D"yui_3_16_0_1_1419721735378_5912" di=
r=3D"ltr">So obviously something to both report and monitor & restrict =
as at all possible. Thanks, Burkhard!</div><div id=3D"yui_3_16_0_1_14=
19721735378_6622" dir=3D"ltr">'Would be interesting to know if it is sold l=
ocally.<br></div></div><div id=3D"yui_3_16_0_1_1419721735378_5320" class=3D=
"signature"><br></div><br> <div id=3D"yui_3_16_0_1_1419721735378_5380" sty=
le=3D"font-family: HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neu=
e, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id=
=3D"yui_3_16_0_1_1419721735378_5379" style=3D"font-family: HelveticaNeue, H=
elvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px=
;"> <div id=3D"yui_3_16_0_1_1419721735378_5767" dir=3D"ltr"> <hr size=3D"1"=
> <font id=3D"yui_3_16_0_1_1419721735378_5766" size=3D"2" face=3D"Arial"> =
<b><span style=3D"font-weight:bold;">From:</span></b> Nicholas Hill <fer=
nhillns@gmail.com><br> <b><span style=3D"font-weight: bold;">To:</span><=
/b> "naturens@chebucto.ns.ca" <naturens@chebucto.ns.ca> <br> <b><span=
style=3D"font-weight: bold;">Sent:</span></b> Saturday, December 27, 2014 =
2:34 PM<br> <b><span style=3D"font-weight: bold;">Subject:</span></b> Re: [=
NatureNS] Frog Pond (Halifax) - Non-native Aquatic<br> </font> </div> <div =
id=3D"yui_3_16_0_1_1419721735378_5378" class=3D"y_msg_container"><br>Yes, t=
his is Cabomba and not Ceratophyllum which is closest morphologically.<br>F=
lora Michigan says: "A native of southeastern states from Texas to<br>Flori=
da northward, this species has become established as far north as<br>New En=
gland and southern MI, perhaps escaped from cultivation."<br>"This is our o=
nly aquatic vascular plant with opposite leaves (rarely<br>whorled) much di=
ssected leaves on distinct petioles (5-15 mm long on<br>well developed leav=
es). The palmate pattern of dissection results in a<br>characteristic fan s=
haped leaf." (Vos and Reznicek, 2012)<br><br>Congratulations! You should pu=
t in a note to the Canadian Field<br>Naturalist on the find, the conditions=
, maybe something on the water<br>quality and any development near Frog Pon=
d.<br>And specimens to Acadia (Ruth Newell) and Museum (Marian Munroe).<br>=
Also might send one to ACCDC (Sean Blaney). There is no note of this<br>spe=
cies in the ACCDC records for NS NB or PEI.<br><br>Cool<br><br>Nick<br><br>=
<br><br><br><br><br><br><br>On Fri, Dec 26, 2014 at 6:35 PM, Burkhard Plach=
e<br><<a ymailto=3D"mailto:burkhardplache@gmail.com" href=3D"mailto:burk=
hardplache@gmail.com">burkhardplache@gmail.com</a>> wrote:<br>> Here =
is a link to a few photos of the specimens floating in clear water:<br>>=
<a id=3D"yui_3_16_0_1_1419721735378_5384" href=3D"https://www.dropbox.com/=
sh/5cqlzcbn93wayoh/AABLTH0_OET6amgcDO0bcvR8a?dl=3D0" target=3D"_blank">http=
s://www.dropbox.com/sh/5cqlzcbn93wayoh/AABLTH0_OET6amgcDO0bcvR8a?dl=3D0</a>=
<br>><br>> On Fri, Dec 26, 2014 at 11:04 AM, Nicholas Hill <<a id=
=3D"yui_3_16_0_1_1419721735378_5385" ymailto=3D"mailto:fernhillns@gmail.com=
" href=3D"mailto:fernhillns@gmail.com">fernhillns@gmail.com</a>> wrote:<=
br>>> Can you send an image of your aquatic?<br>>> No reports o=
f Cabomba here that I can see. Have you considered the<br>>> bladderw=
orts (e.g, purple bladderwort)?<br>>> Nick<br>>><br>>> On=
Thu, Dec 25, 2014 at 1:27 PM, Burkhard Plache<br>>> <<a ymailto=
=3D"mailto:burkhardplache@gmail.com" href=3D"mailto:burkhardplache@gmail.co=
m">burkhardplache@gmail.com</a>> wrote:<br>>>> For a number of =
weeks now, I had noticed a heavy accumulation<br>>>> of an aquatic=
herb at the shoreline of Frog Pond.<br>>>> Initially I assumed it=
might be Ceratophyllum (hornwort) or<br>>>> Myriophyllum (water m=
ilfoil), both reported from Nova Scotia.<br>>>><br>>>> Ho=
wever, the plant has opposite leaves, which are fan-like,<br>>>> f=
inely divided. I am now certain it is a species of Cabomba,<br>>>>=
most likely Cabomba caroliniana.<br>>>><br>>>> The speci=
es is not native to NS, but used in aquariums.<br>>>> Maybe this i=
ntroduction was the result of an aquarium dump.<br>>>> (Could have=
happened a few years back when a Gold Fish<br>>>> or a Koi was se=
en in the pond.)<br>>>><br>>>> In other regions of the wo=
rld Cabomba is a problematic<br>>>> invasive. Is it problematic he=
re as well?<br>>>> Have people seen this in other parts of Nova Sc=
otia?<br>>>><br>>>><br>>>> Wikipedia links to th=
e species mentioned above:<br>>>> <a href=3D"https://en.wikipedia.=
org/wiki/Ceratophyllum" target=3D"_blank">https://en.wikipedia.org/wiki/Cer=
atophyllum</a><br>>>> <a href=3D"https://en.wikipedia.org/wiki/Myr=
iophyllum" target=3D"_blank">https://en.wikipedia.org/wiki/Myriophyllum</a>=
<br>>>> <a href=3D"https://en.wikipedia.org/wiki/Cabomba_carolinia=
na" target=3D"_blank">https://en.wikipedia.org/wiki/Cabomba_caroliniana</a>=
<br><br><br></div> </div> </div> </div></body></html>
------=_Part_1835707_1543934039.1419722822717--
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