Science ❯Ecology ❯Population Dynamics

Species Decline

Butterflies Monarch Butterfly Monarch Butterfly Population Urban Wildlife Conservation Efforts Chinook Salmon Endangered Species Marine Species

Century of Data Shows Native Declines and Invasive Boom in Wadden Sea

Long-term monitoring has traced steep drops in fish, plant and bird populations as invasive shellfish spread across UNESCO-listed tidal flats.

Harbour Porpoises in German Baltic Face Alarming Population Decline

California Halts Commercial Salmon Fishing for Third Year Due to Population Crisis

California Faces Potential Third Consecutive Salmon Fishing Ban

Winter Bird Count Reveals Decline in Common Species Across Germany

Monarch Butterflies Proposed for Threatened Species Listing in U.S.

Record-Low Butterfly Numbers Prompt 'Nature Emergency' Call