We live on the blue planet. Some 70% of the Earth’s surface is covered with water, but only 2.5% is classified as fresh. And most freshwater is frozen in polar icecaps, or present in areas that can’t be tapped, such as deep underground aquifers or moisture in soils.
Research associated within GLEON ranges from the impacts of major events (e.g., Hurricane Irene) on lake function around the globe to how high frequency data serve as a common language to link citizens, scientists, and students around the world in research, education, and outreach.
Carbon released from terrestrial ecosystems is an important source of organic matter in most streams, lakes and rivers. In the Hudson River there has been a doubling in concentration of dissolved organic carbon over the past 15 years.
Submersed aquatic vegetation (SAV) is an important habitat in the Hudson River. We have investigated a wide range of functions in SAV beds including maintenance of high dissolved oxygen, effects on suspended sediment, and habitat value.
Beds of water celery (Vallisneria americana) and other plants are widespread in the Hudson River, and play several important ecological functions. These beds contain a diverse invertebrate community, which may serve as a major source of food to the river's fish.
We have carried out a diversity of small and mesocosm-scale experiments, in conjunction with regionally distributed field sampling, to assess when the composition of stream benthic bacterial communities corresponds with differences in stream metabolic activities.
For three decades, our scientists have been researching the Hudson River ecosystem– from the way shoreline development impacts water quality to how invasive species influence resident plants and animals. As a result, the Hudson is the most scientifically scrutinized river in the world.