Managing fish in human-altered rivers is a challenge because their food webs are sensitive to environmental disturbance. So reports a new study in the journal Ecological Monographs, based on an exhaustive three-year analysis of the Colorado River in Glen and Grand Canyons.
Most of us are familiar with the idea that we need to reduce carbon dioxide emissions to prevent global warming. Methane is also a problem, and we hear about it much less frequently. But compared to carbon dioxide, methane's impact on climate change is some twenty times more powerful.
In rural areas, unpaved roads hold a certain charm. They restrict the volume and speed of traffic and, compared to their paved counterparts, are less expensive to build. But are they a greener alternative?
Most of us have experienced a river shoreline— from a park, a train, or a boat. When we see where the water meets the land, how many of us have considered how modified shorelines influence river health?
The next time you find yourself reaching for your umbrella, take a moment to consider the fate of rainfall after it hits the ground. While some rain is absorbed by natural ground cover, such as fields or forested areas, a high percentage becomes stormwater delivered to our rivers, creeks, ponds and lakes
We tend to think of nature as having reliable patterns; the leaves turn color each autumn, seasonal birds come and go. But there are also examples of sudden, unexpected changes in the environment around us.
Few themes in literature are more alluring than the lost world. Places such as Atlantis, Shangri-La, Conan Doyle's "Lost World", and now the bestselling "The Lost City of Z" conjure up images of strange landscapes, exotic civilizations and hidden treasures.
If you ever saw "Star Wars," you'll remember the trash compactor scene: Trying to escape from the Imperials, Luke and his friends duck into what turns out to be a trash compactor, where things go from bad to worse.