Friday December 14, 2018
Home Uncategorized Extinction of...

Extinction of large animals could hasten climate change

0
//
Republish
Reprint

London: The extinction of large animals could hasten climate change as their presence in tropical forests help in dispersing tresses with dense wood which are more effective in storing carbon dioxide from the atmosphere than smaller trees.

The reduction of large animals from tropical forests could make climate change worse as these animals are essential in scattering trees with dense wood.

A decline in fruit-eating animals such as large primates, tapirs and toucans could have a knock-on effect for tree species, the findings showed.

“We show that the decline and extinction of large animals will over time induces a decline in large hardwood trees. This in turn negatively affects the capacity of tropical forests to store carbon and therefore their potential to counter climate change,” said one of the researchers Carlos Peres from University of East Anglia in England.

Large animals disperse large seeded plant species – often associated with large trees and high wood density — which are more effective at capturing and storing carbon dioxide from the atmosphere than smaller trees, the researchers explained.

The research team studied data from more than 2,000 tree species in Brazil’s Atlantic Forest, and more than 800 animal species.

They found that frugivores which are not targeted by hunters — such as small birds, bats and marsupials — are only able to disperse small seeds, which are associated with small trees.

Meanwhile large heavy-wooded trees, which can capture and store greater amounts of carbon, are associated with larger seeds. And these are only dispersed by large animals.

“The big frugivores, such as large primates, the tapir, the toucans, among other large animals, are the only ones able to effectively disperse plants that have large seeds. Usually, the trees that have large seeds are also big trees with dense wood that store more carbon,” Prof Mauro Galetti from Sao Paulo State University in Brazil explained.

The findings appeared in the journal Science Advances. (IANS)(image courtesy: timedotcom.files.wordpress.com)

Click here for reuse options!
Copyright 2015 NewsGram

Next Story

Green Groups In Brazil Prepare A Climate Change Plan

A Brazilian version would draw on linkages between about 150 civil society groups who worked closely over the last year to oppose Bolsonaro's campaign

0
Brazil, rainforests
This photo released by the Brazilian Environmental and Renewable Natural Resources Institute (Ibama) shows an illegally deforested area on Pirititi indigenous lands as Ibama agents inspect Roraima state in Brazil's Amazon basin. VOA

With its wooden walls and posters on protecting forests and fauna, Brazil’s pavilion at the U.N. climate talks in Poland offers no hint of the angst at home and abroad over mixed messages on global warming from its president-elect.

But campaign promises made by Jair Bolsonaro that could weaken protection for the Amazon rainforest are a hot topic of conversation among visitors, said Caio Henrique Scarmocin, one of three hosts on the stand.

At the conference, whose outcome will be key to implementing the landmark 2015 Paris Agreement on climate change, scientists and environmental activists said they were laying the groundwork should calls for Bolsonaro to protect Brazil’s forests fail.

Campaign statements from Bolsonaro, who takes power in January, suggested indigenous lands could be opened up to economic exploitation, including agribusiness and mining, and environmental fines eased.

Brazil President, rainforest
Brazil’s President-elect Jair Bolsonaro arrives for a meeting in Brasilia. VOA

The ability of Ibama, Brazil’s environmental protection agency, to fine those who break environmental laws is one of the government’s best defenses against the destruction of forests, stoking fears of a deforestation spike under the new government.

Bolsonaro, who campaigned on a far-right platform, also pushed the Brazilian government to withdraw its offer to host next year’s U.N. climate conference.

“He has a hostile approach over environmental issues,” said Paulo Barreto, a researcher with Imazon, a Brazilian institute monitoring deforestation in the Amazon.

Brazil is home to about 60 percent of the Amazon rainforest, considered by many as nature’s best weapon against global warming, because trees absorb and store carbon from the air.

Alfredo Sirkis, executive secretary of the Brazilian Forum on Climate Change, said he thought dialogue with the incoming government was still possible.

Rainforest, Brazil
In this May 4, 2018 photo released by Ibama, the Brazilian Environmental and Renewable Natural Resources Institute, members of a specialized inspection group of Ibama walk with their weapons up through an area affected by illegal mining, after landing in helicopters in Munduruku indigenous lands in Para state in Brazil’s Amazon basin. VOA

But if environmental roll-backs proceed, there was a “contingency plan,” he told journalists.

A coalition would assemble regional governments committed to respecting Brazil’s emissions reduction goals set under the Paris pact, said Sirkis.

Governors in as many as seven Brazilian states, including Amazonas, Pernambuco, the Federal District, Espirito Santo, Parana and Rio Grande do Sul, had already expressed interest in joining, he said.

“This is for starters,” said the former congressman.

A spokesman for the presidency of Brazil at the climate talks declined to comment.

U.S. shows the way

The plan has similarities with “We Are Still In,” a U.S. group of more than 3,500 mayors, governors and business leaders who have promised they will not retreat from the Paris deal.

Brazil, cuban doctors, rainforest
Brazil’s President-elect Jair Bolsonaro talks to the media, in Brasilia, Brazil. VOA

Last year, U.S. President Donald Trump gave notice the United States would leave the accord — although it cannot formally withdraw until 2020 — arguing it was bad for the economy.

Mauricio Voivodic, executive director of WWF-Brazil, said his group had been in touch with the U.S. campaign through WWF-US, which is part of the “We Are Still In” secretariat.

The American coalition has its own pavilion at the U.N. climate talks.

“We are learning from ‘We Are Still In’ the importance of sub-national (governments) and companies enhancing commitments for the implementation of the Paris Agreement,” Voivodic said.

But WWF-Brazil is not yet trying to emulate the model because it wants to prioritize dialogue already under way with the transition government, he added.

“It could be an option, but we are not going in the direction of starting planning this,” said Voivodic.

Deforestation, Brazil
Brazil Surpasses 2020 Target to Cut Deforestation Emissions. Flickr

Brazil’s future environment minister told Reuters on Monday his “inclination” was not to leave the Paris Agreement, after Bolsonaro said on the campaign trail he might quit the deal, under which countries set their own targets to cut emissions.

Marcio Astrini, public policy coordinator for Greenpeace Brazil, said he also looked to the United States as a vague blueprint to build a similar “resistance movement.”

A Brazilian version would draw on linkages between about 150 civil society groups who worked closely over the last year to oppose Bolsonaro’s campaign, he said.

Also Read: Many Countries Refused To Endorse Landmark Study as Climate Conference Enters Second Week

Also mirroring tactics used in the United States, his group does not exclude filing lawsuits to push back against potential weakening of environmental and climate regulations in Brazil.

“It’s on the table,” he said, adding that it was still a last-resort option. (VOA)