Artificial reefs are intentionally placed man-made structures that are constructed to provide habitat for fish and invertebrates. They are made of dense, durable materials such as scuttled ships and barges, decommissioned military vehicles, rubble...
Fisheries and habitat scientists often focus on how vegetation and physical structures can create or enhance habitat for fish. But a recent article turned the tables by evaluating how salmon carcasses provide nutrients that...
Arctic grayling (Thymallus arcticus; Figure 1), with their distinctive sail-like dorsal fins, are members of the salmon family and have a native range that begins in Arctic Ocean drainage basins and formerly extended as...
When ecologists need to assess stream habitat to make sure it is healthy for a fish population, they often choose to quantify rather than qualify the characteristics of the habitat. Both quantitative and qualitative...
In many coldwater streams in North America, nonnative trout are replacing native trout populations through hybridization, competition, and predation. Brook trout (Salvelinus fontinalis; Figure 1) are a species native to eastern North America. Throughout...
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,...
The American Fisheries Society’s Fish Habitat Section is pleased to announce the following awards earned at the 2018 Annual Meeting. Congratulations! Best Student Paper Award Shadaesha Green, Ph.D. Candidate, University of Maryland “Elucidating the...
To effectively conserve freshwater fishes, conservationists need information on what types of habitats a given fish species requires. Freshwater migratory species are unique compared to non-migratory fishes because they require access to two or...
Trophic cascades are a well-known phenomenon where the removal of predators often causes an explosion of prey species’ populations due to reduced predation rates. However, an often overlooked facet of trophic cascades is that...
An invasive insect could threaten salmon habitat in the Pacific Northwest. The green alder sawfly (Monosoma pulveratum) was first documented in North America in the 1990s and may have been introduced through shipping dunnage...
