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Rethinking dams: the true cost of hydropower | Earth And The Environment


Nature Geoscience and
Sustainability urge the public to reconsider its views on dams. The
Nature Geoscience study relays alarming data that debunks previous assumptions that hydrological dams are net carbon stores, demonstrating instead that dams release twice as much carbon as they store. Meanwhile, a collection of studies in
Sustainability report that only 17 percent of rivers globally are both free-flowing and within protected areas. The messages in these studies join together to ask: What does it mean for our planet that the vast majority of our river systems are dammed and what are the wider consequences of hydrological damming?
As the video above explains, there are over 60,000 large dams globally and over 3,700 more currently planned or under construction. Of those 3,700, over 500 will be built in protected areas - which begs the question, how protected can our remaining free-flowing rivers actually be?  ....

Comunidad Autonoma De Cataluna , Ian Harrison , Denielle Perry , World Wildlife Fund , Species Survival Commission , University Of Barcelona , Catalan Institute For Water Research , School Of Earth , Northern Arizona University , Durable River Protection Coalition , Freshwater Conservation Committee , Un Convention On Biological Diversity , Helmholtz Centre Of Environmental Research , Drivers Lab , Conservation International , Nature Geoscience , Northern Arizona , Survival Commission , Biological Diversity , Nature Conservancy , Free Flowing Rivers Lab , Helmholtz Centre , Environmental Research , Catalan Institute , Water Research , Matthias Koschorreck ,

Carbon emissions from dams considerably underestimated so far


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IMAGE: The Eder dam (Germany) in the year 2019. Areas of water that are drying out release considerably more carbon than areas covered by water.
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Credit: Maik Dobbermann
Among other things, dams serve as reservoirs for drinking water, agricultural irrigation, or the operation of hydropower plants. Until now, it had been assumed that dams act as net carbon stores. Researchers from the Helmholtz Centre of Environmental Research (UFZ) together with Spanish scientists from the Catalan Institute for Water Research (ICRA) in Girona and the University of Barcelona showed that dams release twice as much carbon as they store. The study has been published in ....

Comunidad Autonoma De Cataluna , Philipp Keller , Matthias Koschorreck , University Of Barcelona , Catalan Institute For Water Research , Helmholtz Centre Of Environmental Research , Department Of Lake Research , Helmholtz Centre , Environmental Research , Catalan Institute , Water Research , Lake Research , Temperature Dependent Phenomena , Earth Science , Hydrology Water Resources , Climate Change , காமுனிடட தன்னாட்சி டி கடலுள் , பிலிப் கெல்லரர் , பல்கலைக்கழகம் ஆஃப் பார்சிலோனா , கற்றலான் நிறுவனம் க்கு தண்ணீர் ஆராய்ச்சி , துறை ஆஃப் ஏரி ஆராய்ச்சி , சுற்றுச்சூழல் ஆராய்ச்சி , கற்றலான் நிறுவனம் , தண்ணீர் ஆராய்ச்சி , ஏரி ஆராய்ச்சி , வெப்ப நிலை சார்ந்தது நிகழ்வுகள் ,