Author: Alexander Vaisvil
Fish use habitat depending on their needs. Typically, management of fishes relies on what habitats the fish are thought to inhabit. For example, sampling at a single depth can be biased if the fish...
Fish use different habitats based on habitat characteristics, such as vegetation type or bottom composition. Ecologists have long believed that these habitat characteristics determine the makeup of a fish community. Therefore, our idea of...
Giant catfish (Genus Brachyplatystoma) in the Amazon River basin have a reputation for long distance migrations (up to 5800 km or 3600 miles), so hydropower dam projects present potential barriers to their life history....
Salmon and trout (the salmonids) across the Pacific Northwest are known for their table fare and prodigious sport fishing. In addition, many salmonids are declining because of overfishing and/or lack of adequate spawning habitat,...
Striped Bass Morone saxatilis (Figure 1) is a large anadromous fish which spawns in coastal rivers. Its native range spans from the St. Johns River, FL, to the St. Lawrence River in Quebec, Canada....
Atlantic tarpon (Megalops atlanticus; Figure 1) are a popular recreational sport fish in the Gulf of Mexico as well as the sub-tropical and tropical Atlantic Ocean. Anglers love the athletic challenge of reeling in...
Reservoirs are artificial lakes that are created when humans dam rivers for irrigation, flood control, or hydroelectric power. Native fish species that take up residence in reservoirs may struggle to adapt because their new...
Dams have a variety of effects on a river. Changes in temperature, sediment transport, substrate composition, and discharge are just a few examples of how dams can impact fish habitat. When a dam is...
Thousands of reservoirs have been constructed across the United States and Canada for water storage, flood control, generation of electricity, and recreation. Reservoirs are dammed rivers that have features (temperature, current, and habitat) that...
Estuaries are found where a river meets the ocean. It is a place characterized by mixing water of different physical and chemical properties. Physical properties of estuarian habitats depend on their contour, aquatic vegetation,...