The Sun Singer's Travels

Malcolm R. Campbell's World

Climate Change: Food Web Disruptions

from the EPA:

Food Web Disruptions

“The impact of climate change on a particular species can ripple through a food web and affect a wide range of other organisms. For example, the figure below shows the complex nature of the food web for polar bears. Not only is the decline of sea ice impairing polar bear populations by reducing the extent of their primary habitat, it is also negatively impacting them via food web effects. Declines in the duration and extent of sea ice in the Arctic leads to declines in the abundance of ice algae, which thrive in nutrient-rich pockets in the ice. These algae are eaten by zooplankton, which are in turn eaten by Arctic cod, an important food source for many marine mammals, including seals. Seals are eaten by polar bears. Hence, declines in ice algae can contribute to declines in polar bear populations.

epa2

This information can currently be found on the EPA website here.

Malcolm

As a long-time member of such organizations as the National Parks and Conservation Association and the Nature Conservancy, I can’t help but write novels that support conservation the value of the environment.

 

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