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Hi Nancy
The pollen is surely from pine. There is "nothing discrete about the sex
life of a white pine"! White pine is a prolific pollen producer. The
pollen grains are also very large compared to other species (in case you
want to look at them under a microscope) and they are very buoyant on water.
The tree has the added advantage of being capable of growing very tall,
often forming a "super-canopy", towering above other trees. When the wind
blows, it can disseminate pollen over very long distances.
I guess if you are going to rely on the wind to reproduce, then the drawback
is that you have to make huge amounts of pollen! I've been watching the
male cones swelling larger and becoming "yellower" on white pine in my back
yard; it was clear that the winds during the next dry spell of weather were
going to be laden with pollen. (No point in washing a car, etc. Just wait
it out.) It is common to see lakes rimmed with pine pollen.
The more "reproductively advanced" trees, like sugar maple, rely on insect
pollination, a much less messy mechanism requiring less pollen to get the
job done!
Donna
From: naturens-owner@chebucto.ns.ca [mailto:naturens-owner@chebucto.ns.ca]
On Behalf Of nancy dowd
Sent: June-14-13 6:42 AM
To: naturens
Subject: [NatureNS] pollen from which tree
Which species of tree is dispersing the pollen seen now on lakes in the SW
half of NS? Pine?
This photo shows an area of sheltered shoreline on L Torment, E Dalhousie,
Kings Co where the wind has gathered the pollen into electric green
windrows. It is more thinly dispersed throughout the lake but still easily
visible from a boat as a green suspension just below the surface.
http://www.flickr.com/photos/92981528@N08/9041238876/
Nancy
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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-CA link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Hi Nancy<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>The pollen is surely from pine. There is “nothing =
discrete about the sex life of a white pine”! White =
pine is a prolific pollen producer. The pollen grains are also =
very large compared to other species (in case you want to look at them =
under a microscope) and they are very buoyant on water. The =
tree has the added advantage of being capable of growing very tall, =
often forming a “super-canopy”, towering above other =
trees. When the wind blows, it can disseminate pollen over very =
long distances. <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p> </o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>I guess if you are going to rely on the wind to reproduce, then the =
drawback is that you have to make huge amounts of pollen! =
I’ve been watching the male cones swelling larger and becoming =
“yellower” on white pine in my back yard; it was clear that =
the winds during the next dry spell of weather were going to be laden =
with pollen. (No point in washing a car, etc. Just wait it =
out.) It is common to see lakes rimmed with pine =
pollen.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p> </o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>The more “reproductively advanced” trees, like sugar =
maple, rely on insect pollination, a much less messy mechanism requiring =
less pollen to get the job done! <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p> </o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Donna<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p> </o:p></span></p><div =
style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm'><p class=3DMsoNormal><b><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span>=
</b><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> =
naturens-owner@che