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The collapse was near-total, between 90 and 99 percent in a handful of states. Rhode Island's muskrat populations are estimated to be roughly 15 percent of what they were several decades ago. The decline in muskrat populations began in the 1990s and early 2000s. [23]
However, due to loss of habitat (farming), water pollution, illegal fishing nets, and the introduction of non-native species like muskrat, population levels continue to decline. In the mid-1970s, an estimated 70,000 desmans were left in the wild; by 2004, the figure was only 35,000. [ 5 ]
It was originally imported to the southern United States – possibly as early as the 19th century, although in larger numbers from the 1950s – to reduce the population of muskrat. [3] [4] Some escaped and found the swamps of Louisiana ideal territory, leading to their common name of swamp rat. With the decline in the fur market in the 1980s ...
In just the last 10-25 years, there was a 40% decline in population, from 4.8 million to the current 2.9 million. While the reindeer isn’t the most endangered animal, the decreasing trajectory ...
While this city has a five-year population decline of 4.2%, Elgin saw the highest one-year population decline. Residents here dropped to 109,634 in 2022 from 117,850 just a year prior.
The average size of global wildlife populations have declined by 73% in 50 years, a new study by the World Wildlife Fund has found.. The study, titled the 2024 Living Planet Report, monitored ...
A 2020 study identified habitat destruction, predation by muskrat, and lack of host fish as the major factors for decline. U. crassus was noted to be more tolerant of silt in the water than other threatened species. [6] The most stable populations are found in Russia and northern Europe. [6]
A shocking new report on global biodiversity is detailing what it calls "a catastrophic decline" in wildlife populations ahead of a major international conference on biodiversity.