"Dissolved oxygen concentrations, critical for fish survival, show long-term increases," it says.
But it also cautions that work still needs to be done in other areas, and warns of the negative impact of climate change on the river, which is a major source of water for the city. The report highlights several promising trends. There are promising trends, but still plenty of caution It began making a comeback after World War II, and over the last three decades has seen its population among the tidal Thames more than double, according to the report. Before the early 2000s, little was known about their whereabouts, but now " the harbour seal and the grey seal can be seen in the Thames," the report notes, from the river's tidal limit west of London, through the center of the city and across its outer estuary.Īnother success story pointed to in the report is the avocet, a migratory wading bird which had become extinct as a breeding species in Britain by 1842 due to habitat loss.
Terry points to "reductions in pressures and improvements in key species and habitats."Īmong those species are two types of seals.
The river today is "home to myriad wildlife as diverse as London itself," Andrew Terry, the director of conservation and policy at the Zoological Society of London, writes in a forward to the report published Wednesday. In 1858, sewage clogging London's Thames River caused a "Great Stink." A century later, parts of the famed waterway were declared biologically dead.īut the latest report on "The State of the Thames" is sounding a surprisingly optimistic note. Tower Bridge over The River Thames and, in the distance, the secondary central business district of Canary Wharf are pictured as the sun sets in London.
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