The Mudcat Café TM
Thread #91225 Message #2375853
Posted By: Rumncoke
27-Jun-08 - 06:28 PM
Thread Name: BS: Global warming?
Subject: RE: BS: Global warming?
Casually listening to a nature program on BBC Radio 4 I heard a report of how sea bird colonies were being affected by the spread of tropical plankton and other organisms outward toward the poles.
It is not a theory, not an opinion, the birds can't find the right sort of food to give their chicks in the places they habitually breed. They bring them all sorts of things they can find, but in many cases it is not suitable, so the bird watchers are finding nests of chicks dead from starvation but surrounded by rejected organisms, or even choked by unsuitable food.
The tropical boundaries - an arbitary separation of the Earth's seas by the classification of ecosystems seems to be showing a considerable recent alteration in the warmth of the oceans.
I expect some Northern Hemisphere birds will begin to move their breeding places Northwards once the permafrost melting has settled down and the land develops vegetation suitable for a warmer climate which hopefully will stabilise it.