Berlin, Oct 22 : A new study on landscape around Chesapeake Bay, the largest estuary in the US, has determined that imbalance in nitrogen cycle due to the widespread use of fertilizers is damaging water quality and fish populations.
Professor Grace Brush, from Johns Hopkins University in Baltimore, USA, undertook the study of landscape changes around Chesapeake Bay.
Professor Brush studied the organisms and materials preserved in sediments in Chesapeake Bay spanning 1000 to 14,000 years, alongside available historical records covering the past 300 years, to trace the history of changes to nitrogen loading in the estuary.