Pesticide threat to biodiversity underestimated

Pesticides may kill off water insects and other small aquatic life by as much as 42%, according to an analysis of German, French and Australian rivers and streams published on Monday.

Dragonflies are particularly vulnerable to pesticides

The study in US journal the Proceedings of the National Academy of Sciences is the first […]

Climate Change is Real

Thanks to extensive research and noticeable changes in weather and storm prevalence, it’s getting harder to turn a blind eye to the reality of climate change. Since the Industrial Age spurred the increasing usage of fossil fuels for energy production, the weather has been warming slowly. In fact, since 1880, the temperature of the […]

Humans most likely to have caused extreme weather

Extreme weather events over the past decade have increased and were “very likely” caused by manmade global warming, a study in the journal Nature Climate Change said on Sunday.

The high amount of extremes is not normal

Scientists at Germany’s Potsdam Institute for Climate Research used physics, statistical analysis and computer simulations to link extreme rainfall and heat waves to global warming. The link between warming and storms was less clear.

“It is very likely that several of the unprecedented extremes of the past decade would not have occurred without anthropogenic global warming,” said the study.

The past decade was probably the warmest globally for at least a millennium. Last year was the eleventh hottest on record, the World Meteorological Organization said on Friday.

Extreme weather events were devastating in their impacts and affected nearly all regions of the globe.

They included severe floods and record hot summers in Europe; a record number of tropical storms and hurricanes in the Atlantic in 2005; the hottest Russian summer since 1500 in 2010 and the worst flooding in Pakistan’s history.

Last year alone, the United States suffered 14 weather events which caused losses of over $1 billion each. Continue reading Humans most likely to have caused extreme weather

Africa’s water could rescue the continent from climate change

Posted by: Saving Water SA (Cape Town, South Africa) – partnered with Water Rhapsody conservation systems – 28 Nov 2011

The African continent is the most vulnerable to the effects of climate change due to its dependence on rain-fed agriculture but can harness the potential for hydropower, said Minister of Environmental Affairs Edna Molewa […]

More than half of SA ecosystems are threatened

Posted by: Saving Water SA (Cape Town, South Africa) – partnered with Water Rhapsody conservation systems – 21 Nov 2011

South Africa’s water resources and adjacent ecosystems are in a terrible state, with only 35% of the total length of the country’s mainstream rivers still in good condition.

The high levels of threat results particularly from intense land pressures.

The recently released Atlas of Freshwater Ecosystem Priority Areas reveals that 57% of river ecosystems and 65% of wetland ecosystems are threatened.

Mandy Driver, the SA National Biodiversity Institute’s manager of biodiversity policy, said the Biodiversity Assessment published seven years ago highlighted the poor state of many river ecosystems, with the majority of the country’s large rivers rated “critically endangered, endangered or vulnerable.

“We needed a strategic intervention to help sustain and conserve freshwater ecosystems, and the Atlas is the result.”

The team, who spent three years researching and compiling the Atlas, found tributaries overall were in a “far better state” than mainstream rivers.

“They also support the sustainability of hard-working rivers further downstream by diluting poor quality water and flushing pollutants. Only 35% of the length of mainstream rivers is in good condition, compared to 57% of tributaries. Continue reading More than half of SA ecosystems are threatened