Sand Dunes

Sand Dunes

I loved reading up on sand dunes. I found the photos first then went on a hunt for information. Since starting the topic-based part of my blog in May, I have to say that every time I tackle a subject, I’m surprised by what I discover. I had a preconception about dunes, though. Somehow, I thought a dune was a dune was a dune. I was wrong. For instance, there are different shapes and each shape has a name. (See FunFacts below.)

But what I found most fascinating about coastline dunes is just how clever nature is when it begins to make use of what the elements provide. In this case: Harsh conditions, wind, salt water, and calcium carbonate from seashells. Now what could possibly grow in wind, salt water and seashells? Storms, however, really help the process since they throw seaweed into the mix with enough good stuff to allow the first colonizers to prosper. These plants are grasses: marram grass, sea wort grass and others. Sea grasses have deep roots that can reach the water table. The deep roots bind the sand together which in turns creates stability and adds nitrogen to the soil. 

The grasses, having done their job, allow tough, hardy plants to invade the dunes like heather, gorse and heaths. In turn, these plants add humus to the soil which then invites the conifers to participate. Voila, a shoreline becomes a forest or a heathland even when full of sand. Dunes then become a home to all kinds of wildlife including birds and burrowing animals.

FunFacts about Sand Dunes (Source)

  • A dune is a loose hill of sand built by wind or water.
  • The windward side of a dune, up which the sand is pushed, is generally longer than the opposite, or leeward side.
  • The leeward side of a dune is sheltered from the wind or water. This side has a shorter ‘slip face’ than the windward side.
  • The valley between dunes is called a ‘slack’.
  • Dunes occur primarily in deserts and along coastlines.
  • A dune field is any large area where sand dunes collect.
  • Some coastal areas have a number of sand dunes running parallel to each other. These dunes serve to protect the coastline from storms and wind.
  • There are many different types of dune shapes: Crescentic or transvers, lunettes, linear, star, dome, longitudinal, reversing and parabolic.

*** This Week’s Giveaway is Closed ***

We have a winner! Congrats Marie S.!

For a chance to win this paranormal romance bracelet, scroll to the bottom of the page and read the details for entering. You will be leaving a comment as the entry requirement. Giveaway ends midnight, Arizona time, October 12, 2017.

First October Winner: Karen M.

September Winners: Tamara K., Malissa P., Denise H. and Betty O.!

And now, here are the photos! Enjoy!  (Photos from Pixabay…)

I hope you enjoyed these photos. Be sure to keep scrolling to leave a comment for the weekly prize draw. Details below!

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*** This Week’s Giveaway is Closed ***

We have a winner! Congrats Marie S.!

First October Winner: Karen M.

September Winners: Tamara K., Malissa P., Denise H. and Betty O.! Congrats!

To be in the running for this handcrafted paranormal romance bracelet, made by yours truly, please leave a comment at the bottom of this post. Also, feel free to post comments on every Caris Roane blog, Monday thru Thursday this week, to increase your chances of winning this week’s prize drawing. Only one win per month allowed!

New contest ends midnight, Arizona time, on Thursday, October 12, 2017! On Friday, October 13th, Arizona time, I’ll select the winning blog then the winning comment. I’ll use to make my selection! You may only win once per month. International winner receives gift card.

*** This week’s giveaway! *** To be entered into the giveaway drawing, please leave a comment about sand dunes. Did you spend part of your childhood running up and down sand dunes? Have you ever walked or traveled over a massive sand dune? Which photo did you like best? Feel free to share whatever comes to mind and share from the heart. 

*** And tell us where you’re from! I’m from Buckeye, Arizona, not far from Phoenix. (That’s the Desert Southwest, USA.) ***

Above all: Live the fang!!!