But they can also disrupt the delicate water cycle that provides food,recreation and hydration to communities.
VOA: standard.2010.08.04
If this traditional migration is hindered it could lead to a serious decline in fish reproduction which will unbalance the delicatefood chain on which this ecosystem depends.
We don't yet know which species will benefit, and which will suffer in response to the changes, but because each species plays a specific ecological role on the tundra, the downfall of one species or proliferation of another could have a domino effect that disrupts the tundra's delicatefood web.