Drought leaves Amazon basin rivers at an all-time low

[Pelican Press 0]

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Drought leaves

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basin rivers at an all-time low

Water levels in many of the rivers in the

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basin have reached their lowest on record amid a continuing drought, the Brazilian Geological Service (SGB) says.

The Madeira river, a major tributary to the

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, had fallen to just 48cm in the city of Porto Velho on Tuesday, down from an average of 3.32m for this day,

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.

The Solimões river has also fallen to its lowest level on record in Tabatinga, on Brazil’s border with Colombia.

Brazil’s natural disaster monitoring agency Cemaden has described the current drought as the “most intense and widespread” it has ever recorded.

It is particularly concerning because it has worsened relatively early in the

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’s dry season, which typically runs from June to November.

That suggests the situation in the

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may not significantly improve for some months in a region which is critical in the ****** against climate change, as well as being a rich source of biodiversity.

The links between drought and global warming are complicated, but climate change can play a role in worsening dry conditions in two main ways.

Firstly, the

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basin is typically receiving less rainfall than it used to between June and November as climate patterns change.

Secondly, hotter temperatures increase the evaporation from plants and soils, so they lose more water.

In 2023, the

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basin suffered its most severe drought in at least 45 years –

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.

Last year, the drought was also worsened by the natural weather pattern known as El Niño, which tends to make the

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warmer and drier than normal as well.

El Niño has since ended, but the dry conditions have persisted.

Another factor in

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droughts is deforestation. Around one-fifth of the rainforest has been lost over the last 50 years, for example to make way for agriculture.

These trees provide resilience against drought because they help to increase rainfall by releasing moisture back into the air from their leaves. Without them, the

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is more vulnerable.

President Luiz Inácio Lula da Silva has pledged to halt deforestation completely by 2030.

But the current drought – which has helped fires to spread – highlights some of the challenges of limiting further forest loss.

The low water levels in the region’s main rivers are also severely impacting the lives of local people, who rely on them for navigation.

According to Cemaden, as of last week there were more than 100 municipalities which had not seen any rain for more than 150 days.

Residents of Manacapuru, on the banks of the Solimões river, said they were struggling to get vital supplies, including food and drinking water, to the city.

“We anchored the boat here, and it was stuck on dry land the next day. We had no way to move it,” fisherman Josué Oliveira told Reuters news agency.

“Nothing will get through,” another fisherman explained.

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#Drought #leaves #

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#basin #rivers #alltime

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