How to Know the Freshwater Fishes


Book Description

How to Know the Freshwater Fishes, first published in 1957 as part of the "How to Know" Nature Series, provides keys, descriptions, and (for nearly all species) a line-drawing of all the freshwater fish found in the United States. Although some scientific names in this first edition of the book are now out-dated, the keys, illustrations and descriptions make this guide a valuable reference for those wanting to identify and learn more about North American fish.




Toxic Blue-green Algae


Book Description

In September 1989, dogs and sheep died at Rutland Water following the ingestion of a scum of toxic blue-green algae. The NRA therefore undertook the first major national appraisal of blue-green algae throughout England and Wales. Their report describes the results of the 1989 survey and looks at how events were managed. Recommendations are made for future management, monitoring, research and development. It also reviews blue-green algal toxins, the factors which affect blue-green algal bloom production and approaches to controlling algal populations.










Volunteer Lake Monitoring


Book Description