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Mystery Photo

Rolling White Pine Cone

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Leave it to NC readers to recognize yesterday’s Mystery Photo! I was impressed with the fat tire track guesses – something I would never ever recognize! With the help of the wind and a gentle slope, a White Pine cone rolled down a hill, leaving the imprint of its spirally-arranged scales in a repetitive pattern. The fall cone crop of many conifers this year was extreme, so your chances of coming across this track are great this winter.

All species of pines produce cones with scales that overlap each other like fish scales. During cold, damp weather, these scales close tight to protect the seeds within them from bad weather and hungry animals. When the weather is conducive to germination (warm and dry) the scales open, allowing seeds to escape. Even after cones fall from the tree, their scales can still open and close.

Naturally Curious is supported by donations. If you choose to contribute, you may go to https://naturallycuriouswithmaryholland.wordpress.com and click on the yellow “donate” button.

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Mystery Photo

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A favorite past-time of many people who traverse woods and fields in winter is deciphering the tracks that they come across. Do you know who or what made this track? (Hint: diameter = 5”)

Naturally Curious is supported by donations. If you choose to contribute, you may go to http://www.naturallycuriouswithmaryholland.wordpress.com and click on the yellow “donate” button.


Mystery Photo

1-19-18 mystery photo 049A2150Who has been here and what have they been doing?  (Hint: inset photo is of Sensitive Fern, Onoclea sensibilis, fertile frond & spores)

Please respond by clicking on “Comments” at the bottom of this post on my blog, www.naturallycuriouswithmaryholland.wordpress.com .

Naturally Curious is supported by donations. If you choose to contribute, you may go to http://www.naturallycuriouswithmaryholland.wordpress.com and click on the yellow “donate” button.


Spinning Ice Discs

12-18-17 mystery photo by Martha Kent, submitted by Paula Kelley 20171215_151548(3) (003)The latest Mystery Photo is of an ice disc – a large disc of ice spinning in a river. It’s thought that this relatively rare natural phenomenon is likely caused by cold, dense air coming in contact with an eddy in a river, forming discs ranging anywhere from 3 to 650 feet in diameter.

While eddies contribute to the spinning, they are not the only cause. If they were, small discs would spin faster than big discs, and this is not the case. Discs of all sizes rotate at roughly the same rate. One would also expect that discs in still water, where there aren’t any eddies, wouldn’t start spinning, but they do.

The melting of the ice disc contributes to its spinning as well. When an ice disc starts to melt, the melted ice water is denser than the ice, and thus sinks below the disc. This movement causes the water to spin, which in turn spins the disc. (Thanks to Martha Kent for photo submitted by Paula Kelley)

 


Mystery Photo

12-18-17 mystery photo by Martha Kent, submitted by Paula Kelley 20171215_151548(3) (003)What do you think is going on here? Answers should be entered under “Comments” at the bottom of this post on my blog at www.naturallycuriouswithmaryholland.wordpress.com. (Photo by Martha Kent, Winooski River, Richmond, VT on 12/15/17)

On another note: I have recently received a number of inquiries regarding how one can donate to my blog. Everyone has been so generous with my daughter and grandson’s fund that I have hesitated to put a donation option back on my posts, but I have been encouraged to do so and it will return in January. Meanwhile, in response to those who have recently inquired about supporting my Naturally Curious blog with a donation, you can go to www.naturallycuriouswithmaryholland.wordpress.com and click on “Donate,” or send a check made out to me to 134 Densmore Hill Road, Windsor, VT 05089. Thank you so very much.


Mystery Photo

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Snowy Owls have begun appearing in New England in search of food, giving us the relatively rare opportunity to observe their natural behavior.  Do you know what this Snowy Owl is doing?  Please click on “Comments” underneath this post on my blog to respond.


Pine Soap

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The bubbles you see is are the formation of a crude soap on the bark of a White Pine. During dry periods salts, acids and other particles from the air coat the surface of the bark. When it rains, these mix with the water and form a solution. The foam is from the agitation of the mixture when it encounters a barrier (bark) during its flow toward the ground.

As to why this occurs primarily on pines, botanist Ken Sytsma states, “Pines produce a whole array of natural hydrocarbons for herbivory defense. One set of these is “pine tars” that have been used in the past to make soap. As precipitation works its way down trunks of pines, they accumulate these compounds. What you may be seeing is natural pine soap in the making.” (Thanks to Brenda & Steve Hillier for Mystery Photo idea.)