Fisheries and Aquaculture Research

Limiting Factors for Recovery of Atlantic Sturgeon on the Altamaha River

The Atlantic sturgeon Acipenser oxyrinchus is a key component of the unique biological assemblage of the Altamaha River of coastal Georgia. Although the Altamaha once supported one of the largest Atlantic sturgeon fisheries in U.S. waters, the fishery was closed in 1995 because over-harvest and habitat destruction had decimated all major US populations. Read more...

Population Dynamics and Essential Habitats of Shortnose Sturgeon in the Ogeechee River, Georgia.

This research will be conducted to define population attributes and evaluate habitats of shortnose sturgeon in the Ogeechee River, Georgia. The first objective of the proposed study will be to estimate abundance and to evaluate the age structure of the current population. Read more...

Intensive Culture of Russian Sturgeon in Georgia

For many centuries, caviar has come to symbolize both affluence and sophistication of the western world. In recent years, however, the market for this status symbol of culinary extravagance has fallen into crisis. Severe depletion of all major sturgeon stocks of the Ponto-Caspian Regions has led to...read more

Population Dynamics and Critical Habitats of Shortnose Sturgeon On the Altamaha River

Biologists now recognize that the stock composition of Shortnose sturgeon in coastal rivers of the southeastern U.S. is significantly different from that of more northern habitats. Unfortunately...read more

Life History and Population Dynamics of Atlantic Sturgeon on the Altamaha River

Earlier this year, American Rivers identified the Altamaha River as the 7th most endangered river in the U.S. Water withdrawals, pollution, and industrial developments have dramatically altered aquatic habitats from its headwaters to its delta situated near Darien, Georgia. Read more...

Population Dynamics & Life History of Lake Sturgeon in the Muskegon River, Michigan

Although lake sturgeon (Acipenser fulvescens) were once abundant in all of the Great Lakes, overfishing and loss of habitat have devastated most populations. Working in the Muskegon River of Michigan's Lower Peninsula, Dr. Peterson and his students are trying to determine what steps are needed to save one of the last remaining populations of these ancient fish. Read more...

Effects of trout stocking on native non-game fishes in Georgia.

Trout have been stocked in streams for sport fishing for decades. Nonetheless, little is known about the impact of this practice on native fishes, especially in North America. We are utilizing a combination of field and lab experiments to determine...read more

Effects of turbidity on foraging success and optimal habitat use by native stream fishes

Perhaps the biggest problems affecting aquatic ecosystems today is increasing sediment loads. In these projects, we are examining the effects of turbidity on: reactive distance, capture success and ultimately optimal habitat use by several water-column fishes...read more

Predicting optimal habitat use in stream fishes.

We have developed two general models for predicting habitat use in stream fishes both based on energy maximization principles. The model for water-column fishes uses prey-capture success data to predict focal-point velocities that maximize energy intake for water-column feeders...read more

Assemblage organization of stream fishes along a longitudinal gradient in the Coweeta Creek drainage, N.C.

We have been conducting long-term fish population censuses in three 100m sites for the past 13 years (3-4X mean generation time of most species) and collecting environmental data from the same sites. During this period, the drainage has experienced extensive environmental variation including high water years and a four-year drought. We will examine patterns in both assemblage structure and examine correlations between assemblage structure, abundance/recruitment of individual species, and environmental parameters (flow variation, depth, substratum composition, etc.). Results from a similar analysis can be found in Funding for this project comes from NSF and the Warnell School of Forestry and Natural Resources.