Cases / Fishing ban · Brazil · 2023
Lake Tefé reaches 39.5 °C in 2023; 209 dolphins die
Short record: the main facts, with sources. A full case file has not been prepared.
Nature's voice · report
No measurement of the harm done to me here is on record.
Did nature suffer? Not measured.
Not on record
- The record does not name which of my species, waters, soils or forests were harmed.
Revista Pesquisa FAPESP reported that Lake Tefé in the Amazon reached 39.5 °C in 2023, and that 209 dolphins died. The sources reviewed do not state the cause of the deaths.
What?
Lake Tefé reached 39.5 °C in 2023, and 209 dolphins died, according to the source. Revista Pesquisa FAPESP
Where?
Lake Tefé, Amazon, Brazil Revista Pesquisa FAPESP
When?
Who?
Gained
None on recordLost
- Dolphins in Lake Tefé — 209 reported deaths in 2023 Revista Pesquisa FAPESP
Harmed
None on recordWhy?
Not stated in the sources reviewed.
How?
Not stated in the sources reviewed beyond the temperature and death count. Revista Pesquisa FAPESP
6 of 6 questions answered from the record
What happened
The record, in order.
Revista Pesquisa FAPESP reported that Lake Tefé in the Amazon rose to 39.5 °C in 2023.
The same report gives 209 dolphin deaths in 2023.
In court and with insurers
Every proceeding and every insurer decision on record.
Lawsuits and rulings
No court case on record. No court has ruled on this case.
Insurers
No insurer decision on record.
What we don't know
Undisclosed, unproven, untried: recorded as data.
Nature
- Not measured Harm to nature: The record holds no measurement of harm to nature.
Record
- None on record The source address gives 41 °C for the lake in its headline; the 39.5 °C figure is used here. Not resolved.
- None on record The cause of the deaths is not stated in the sources reviewed.
- None on record The species, survey method and counting method are not stated.
Did the harm stop?
Not stated in the sources reviewed.
Who paid?
Not stated in the sources reviewed.
Sources
Voices on record: — Company or project— Government and regulators— Courts✓ Press and investigations— Communities and civil society— Researchers
Press and investigations
- Lake Tefé at 39.5 °C; 209 dolphinsRevista Pesquisa FAPESP · 2024–25