Changes in water temperature.
Her colleague, Dr. Michael Iseman, believes changes in water practices play a role.
Over the next eight days, the gauges recorded changes in water pressure caused by waves rolling above.
Then there was a sudden shortage, caused by changes in water temperature and currents and other environmental conditions.
More than 77% of respondents reported that symptoms began when they noticed changes in water quality from their faucet.
Farmers, pastoralists, fishing communities and town dwellers are vulnerable to changes in water availability and agricultural productivity.
Locks, inclined planes, and lifts were developed to cope with changes in water level.
Growth ring formation probably evolved late in the Paleozoic Era in response to seasonal changes in water availability.
He and his team look for changes in water temperature, or mud plumes in hot pools that otherwise run clear.
Freshwater bivalves are sessile filter feeders (see filter feeding) and very sensitive to changes in water quality.
The system, patented by SIF Technologies six years ago, uses hydrocavitation to create changes in water pressure and vapor bubbles.
