Tourism here has grown rapidly in recent years and at the same time the water quality has deteriorated sharply.
Thus, the measurements in 2009 show a more enduring high primary production than in 1999, and this may indicate that the water quality has deteriorated over the last 10 years.
But over the years, water quality has deteriorated.
With the proliferation of factory farms in Iowa, our state's water quality has deteriorated to the point of being the worst in the nation as more than 542 lakes, rivers and streams are listed on the state's impaired waterways.
Although the systems have different contexts, design and operational characteristics, they have in common that over the last years their service quality has deteriorated, leading to negative users' perception and consequently decrease in patronage levels.
Water quality has deteriorated throughout the basin and high nitrogen in the Mississippi river is causing a large area of hypoxia in the Gulf of Mexico adjacent to the Mississippi delta.
Upstream water quality has deteriorated because the flow is now too slow to flush pollution out of the river system.
Eries also thanked Del Rey's translation notes for clearing up some misconceptions for her, although she later concluded that their quality has deteriorated as the series progresses.
Researchers belonging to the watchdog Centre for Science and Environment (CSE) say Delhi's air quality has deteriorated sharply - particulate matter in the air has risen by 47% between 2000 and 2011, while nitrogen dioxide levels has leapt by 57%.
Last week, the Beijing municipal authorities, bowing to intense pressure as air quality has deteriorated, announced that they would soon release figures on fine-particulate pollution.
While the outlook remains grim for the mortgage REIT sector as a whole, and while overall credit quality has deteriorated, many analysts have a positive view on these specialized companies.
