Log in to Webshots

Login
Get Adobe Flash player

Connect with Facebook to Continue

Hello, facebook user. logout

You are signed in to your Facebook account. Share this photo by posting it on your wall, or by choosing a friend below and posting it on their wall. (one friend at a time)

Album Info:

In the spring when the winters snow begins to melt, water flows across the top of glaciers and snow slopes carrying with it dissolved nutrients in the melt water. In these conditions, algae grows within the top layer of the ice or snow catching the goodies as they flow by and taking advantage of the extra energy from the longer days and stronger sunshine. In this case the algae is predominantly a red-coloured species, but green and blue-green colours are discernable. This is relatively short-lived spring phenomena as soon the very snow and ice layer that the algae are living in will melt and the algae will flow down to the sea with the water that provides them with their nourishment. It is not unusual to see distinctly red, green or blue-green topped ice bergs in the spring as a result of the growth of such algae. There are over 300 species of such algae that live in such harsh and cold conditions. The red colour is a protective chemical (carotenoids such as astaxanthin) that the alga produces against exceptionally high concentrations of visible and ultra violet light that bounces off the snow and ice surfaces and so saturates them to a point where it become harmful and destructive. Such algae are also found in other parts of the world, often in high mountains where extra u-v light due to the thinner atmosphere and again increased light scattering by ice and snow requires protection by similar pigments.

Sample Email

Below is what we'll send to your friends to invite them - edit or remove the optional note.

No comments so far...

To be able to leave a comment please Log in or Sign up.