17 December 2015, The Hindu, Climate change warming world’s lakes at alarming rate. The study spanned six continents. A total of 236 lakes, representing more than half of the world’s freshwater supply, were monitored for at least 25 years. Climate change is warming lakes around the world at an alarming rate, threatening freshwater supplies and ecosystems, says the largest study of its kind led by an Indian-origin researcher. For the study spanning six continents, a total of 236 lakes, representing more than half of the world’s freshwater supply, were monitored for at least 25 years. “We found that lakes are warming at an average of 0.34 degrees Celsius each decade all around the world, threatening freshwater supplies and ecosystems,” said study lead author Sapna Sharma from York University in Toronto, Canada. “This can have profound effects on drinking water and the habitat of fish and other animals,” Sharma said. At the current rate, algal blooms, which can ultimately rob water of oxygen, will increase 20 per cent in lakes over the next century, the study said. Algal blooms that are toxic to fish and animals would increase by five per cent. These rates also imply that emissions of methane, a greenhouse gas 25 times more powerful than carbon dioxide, will increase four per cent over the next decade. “We found that ice-covered lakes, including Canadian lakes, are warming twice as fast as air temperatures and the North American Great Lakes are among the fastest warming lakes in the world,” Sharma noted. Read More here
Category Archives: Equity & Social justice
17 December 2015, Stockholm Reslilience Centre, Social-ecological traps – Damned if they do, damned if they don’t – Adaptation to environmental change is not straightforward, struggling fishing communities in Vietnam show why. Responding to climate change is good but not all responses are great. The term “adaptation”, understood as adjustments in behaviour to either mitigate harm or exploit opportunities emerging from climate change, features prominently in scientific analyses and policy papers. But it comes with a variety of challenges. One important one is the assumption that adaptation by default leads to something better. The reality can be much different. Keep doing what they have always done In a study published in Environment, Development and Sustainability, centre researcher Wijnand Boonstra together with Tong Thi Hai Hanh from Uppsala University have looked at how fishing communities in the Tam Giang Lagoon in central Vietnam have dealt with a variety of challenges. Climate change, floods, population growth and urbanization are some of them. Boonstra and Hanh focused on two villages in the Quang Phuoc commune, Phuoc Lap and Mai Duong. The first village depends significantly on fishing and low-input aquaculture and the second on rice production and aquaculture. Common for both villages is the exposure to ever more frequent storms and floods. Through a mixed-method approach consisting of questionnaires, semi-structured interviews and focus groups, Boonstra and Hanh found that despite attempts at diversifying their fishing methods, the end result is that they keep doing what they have always done. This in turn leads to declining fish stocks and frequent harvest failures in aquaculture. Read More here
2 December 2015, Climate News Network, Climate change threatens US influence. Security experts say a modern Marshall Plan of aid for the Asia-Pacific region is needed to protect US strategic and economic interests from climate-related challenges. Two American security experts say the Asia-Pacific region needs massive international aid to tackle its greatest problem − climate change. And they fear that without a huge outlay on development, diplomacy and defence, the US claim to global leadership may be challenged. In a report they edited for the Centre for Climate and Security (CCS), Caitlin Werrell and Francesco Femia say the region needs a new version of the Marshall Plan, the visionary scheme that helped to rebuild western Europe after the second world war. The US contributed $13 billion (worth about $130 bn today) to that Plan, which was an international package of development assistance to help European economies, beginning in 1947 and running for four years.The CCS report starts with a foreword by the former US Pacific commander, retired admiral Samuel J Locklear III, who says climate change “may prove to be Asia-Pacific’s greatest long-term challenge”, with “potentially catastrophic security implications”. Political tensions Werrell and Femia say the US has “a new strategic focus on the Asia-Pacific: a rising China; rapid economic and population growth; the proliferation of nuclear weapons and materials (five of the world’s nuclear powers are in the Indo-Asia-Pacific); increased economic activity and political tensions in the South China Sea; military build-ups (the area has seven of the world’s 10 largest standing militaries); and the opening of previously impassable sea lanes by a melting Arctic”. They see a clear military imperative for Washington to act. They believe nations in the region may be tempted to “accept the reality of a regionally dominant China, and the economic and political consequences of that reality . . . More robustly addressing the region’s climate challenges offers the US an opportunity to enhance its regional influence.” Read More here
2 December 2015, The Conversation, Climate refugees: in the too-hard basket? Climate change will force people to flood from poorer regions to Western countries in the coming decades. As many as a billion people will end up on the move as floods, droughts, rising seas and climate-related conflicts spread across the globe, sparking political crises in the countries they head to. This is one of the narratives we hear about climate-related migration. But a panel of experts has told the Paris summit it is wrong-headed. They called for a fresh way of thinking about an issue they concede is so major that it may be beyond the scope of these COP21 climate negotiations. The panel of seven academics from European universities, who have been studying climate change-related migration, spoke at a packed side event at the conference centre on Tuesday. They agreed that climate-related migration is happening and will increase; people move for safety (in response to climate-related disasters), and because they’ve lost their livelihoods (such as farming). One study found there could be 180 million climate refugees by 2040; others have estimated one billion people could be affected. Climate change caused higher food prices which contributed to the Arab Spring uprisings, while major droughts in Syria probably contributed to the devastating civil war (although the panellists emphasised that this was not the major cause of the conflict). Climate-related migration is also an important issue for Australia because vulnerable areas of the Pacific and South Asia are in this region. Read More here