Brazil’s Mamirauá Institute reported finding nearly 110 dead river dolphins. The dolphins were in the Tefé River, an Amazon tributary.
The Institute is linked with Brazil’s Science Ministry. It focuses on sustainable projects in Tefé, a city in the Amazon.
Most of the found dolphins were pink river dolphins, and a few were tucuxis. Both types are critically endangered.
To date, 110 bodies have surfaced in Lake Tefé since September 23.
Miriam Marmontel, the Institute’s research leader, said it’s too early to identify the cause. However, experts link the deaths to drought and high temperatures.
In Lake Tefé, water temperatures reached 40 degrees Celsius. Normally, they hover around 32 degrees. This increase turns the water more acidic.
Additionally, a severe drought has lowered the Amazon River to historic lows. This drought also led to a fish die-off near Manaus, Amazonas state’s capital.
The Institute aims to find the root causes and protect remaining dolphins. This spike in deaths raises extinction risks for these species.
In the 2010s, Lake Tefé had 900 pink dolphins and 500 tucuxis.
Background Mass Dolphin Deaths
Freshwater dolphins that live in the Amazon River and its tributaries have been classified as endangered due to serious risks they could disappear from the region, environmentalists warn.
This event highlights the Amazon’s vulnerability to climate changes. Rising temperatures and falling water levels suggest broader environmental issues.
Moreover, the incident puts endangered species at higher risk. Such events can imbalance the Amazon’s ecosystem.
Thus, we need more focused conservation efforts. Studies on climate impact on marine life are essential.
Mass dolphin deaths in Brazil’s Amazon are avoidable.
Also, better data collection and quick actions can prevent similar tragedies. Finally, this should serve as a call for policy changes to protect the Amazon.
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