Environment ❯ Ecosystems

Freshwater Ecosystems

Rivers Lakes River Ecosystems Wetlands River Habitats Fish Species Aquatic Life Fish Populations Lake Ecosystems Ponds Invasive Species Threats to Biodiversity Great Lakes Rivers and Lakes River Systems Saline Water Intrusion Microbial Interactions Impact of Climate Change Dams Wildlife Habitats Stream Habitats Species Decline Population Decline Impact of Human Activity Wildlife Populations Land Ecosystems Indicators of Health Wildlife Restoration Aquatic Biodiversity Loch Ecosystems Andean Streams Cenotes Threats Biodiversity Wildlife Conservation Chesapeake Bay Habitat Restoration Lake Constance Biodiversity Monitoring River Basins Endangered Species Prehistoric Ecosystems Stream Ecology Canal Ecosystems Species Adaptation River Health Algal Blooms Loppio Lake River Conservation Amazon River Migratory Fish Insect Habitats Urban Ecosystems Ancient Ecosystems Lake Titicaca Aquatic Animals Amazon Rainforest Paleoenvironments Lake Ecology Pollution Subtropical and Tropical Regions Reservoirs

River Otter Photographed on Bronx River in First Recorded Sighting in About 100 Years

Experts say the image points to improving freshwater habitat in the Bronx River and that ongoing monitoring is needed to confirm a resident population.

Study Finds Lake Sturgeon May Live for Centuries

Second Beaver Bite at Cunningham Falls Prompts Expanded Park Closures

Scientists Identify Likely Transmissible Melanoma in North American Catfish

Rare American Eel Caught in Chicago River Near Downtown

UN Report Finds Migratory Freshwater Fish Populations Plunging Worldwide

Study Finds Invasive Flathead Catfish Now Apex Predator in Susquehanna River

Researchers Release R Tool to Speed Freshwater Acoustic Analysis

Water Strider’s Ultrafast Leg Fans Inspire Agile Microrobot

Study Documents Bumblebee Catfish Climbing Waterfalls in Brazil