Ecosystems - Status & Trends
Welcome to the USGS Status and Trends Program
The Nation's living resources and the habitats on which they depend are undergoing constant change. Climate change, invasive species, and a plethora of human activities are causing natural resource management and conservation efforts to become increasingly challenging and complex. To help meet this challenge, USGS's Status and Trends of Ecosystems Mission Area supports and provides the collection and analysis of biological data for use by natural resource managers, scientists, and the general public.
Status & Trends Program's Research Topics
Evaluation of the Efficacy of Iodophor Disinfection of Walleye and Northern Pike Eggs to Eliminate Viral Hemorrhagic Septicemia Virus - The USGS Fact Sheet 2009, Evaluation of the Efficacy of Iodophor Disinfection of Walleye and Northern Pike Eggs to Eliminate Viral Hemorrhagic Septicemia Virus presents the results of a study to assess the effectiveness of iodophor disinfection for eliminating VHS (strain IVb) from fertilized eggs of walleye and northern pike intentionally challenged with VHS following egg fertilization. Walleye and northern pike egg survival (hatch) following iodophor egg disinfection also was assessed. Read the Fact Sheet >>