Changing Face of Hudson River

Many far-reaching changes have taken place in the Hudson River as a result of human activity, reports a team of researchers in the June issue of emBioScience/em. Zebra mussels and other invasive species have changed the river's ecology-although the influence of the zebra mussels now seems to be waning. A 40 percent increase in the freshwater flow has also had powerful effects, and these seem to be countering the effects of higher temperatures, especially in summer. Pollution ...