The Ecological Society of America (ESA)

The Ecological Society of America (ESA) is a nonpartisan, nonprofit organization of scientists founded in 1915 to:

• promote ecological science by improving communication among ecologists;
  
  
• raise the public's level of awareness of the importance of ecological science;
   
• increase the resources available for the conduct of ecological science; and
  
  
• ensure the appropriate use of ecological science in environmental decision making by
  enhancing communication between the ecological community and policy-makers.

Ecology is the scientific discipline that is concerned with the relationships between organisms and their past, present, and future environments. These relationships include physiological responses of individuals, structure and dynamics of populations, interactions among species, organization of biological communities, and processing of energy and matter in ecosystems.

ESA's over 10,000 members conduct research, teach, and use ecological science to address environmental issues that include:

• biotechnology
  
  
• natural resource management
  
  
• ecological restoration
  
  
• ozone depletion and global climate change
  
  
• ecosystem management
  
  
• species extinction and loss of biological diversity
  
  
• habitat alteration and destruction
  
  
• sustainable ecological systems
  
  
  (Source, and more informations here)