shishir
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dalma-hydro.bsky.social
shishir
@dalma-hydro.bsky.social
370 followers 230 following 10 posts
Just another political animal.
Also an ecosystem scientist currently investigating questions related to land cover changes,fire and hydrology in the Sierras.
Interests: plant ecology, hydrology, people, policy.
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Reposted by shishir
forrestf.bsky.social
To begin, I was skeptical. I think that too much energy is invested in creating global products which have low accuracy and are not that useful to policymakers, who rarely get to make global decisions. I mostly agree with arguments made here: www.nature.com/articles/s41...
Conservation needs to break free from global priority mapping - Nature Ecology & Evolution
Global priority maps have been transformative for conservation, but now have questionable utility and may crowd out other forms of research. Conservation must re-engage with contextually rich knowledg...
www.nature.com
June 23, 2025 at 5:45 PM
Reposted by shishir
propublica.org
7/ It’s not just about losing usable water, either. According to a new study based on 20+ years of NASA data, runoff from pumped groundwater, combined with moisture lost to evaporation and drought, is now one of the largest contributors of sea level rise.
Graph titled "Water From Land Has Become a Leading Driver of Sea Level Rise." A description below reads: Most of the water lost from drying regions is from groundwater pumping, which ultimately shifts fresh water from aquifers into the oceans. There are two squiggly lines trending upward on the graph, one in blue labeled "melting glaciers," and one in orange labeled "drying land and aquifers." The x-axis is in years, with tick marks every four years from 2004 to 2024, and the y-axis is in mmSLE (Sea Level Equivalent), with tick marks going from -5 to 20 mmSLE. After 2012, the orange line appears to be higher than the blue line. A note below the graph reads: Glaciers refer to the parts of the continents covered in glaciers but excludes the ice sheets of Greenland and Antarctica. Drying land and aquifers refer to the water lost by the continents in areas not covered by glaciers, including river flow and evaporation. Groundwater loss accounts for 68% of the drying in those places.
July 26, 2025 at 2:04 PM
Reposted by shishir
propublica.org
4/ Globally, 70% of fresh water is used for growing crops, with more of it coming from groundwater as droughts become more extreme. But only a small amount of that water makes its way back into aquifers.
Illustration of the process by which groundwater makes its way into the ocean. As water deep underground is pumped out for agriculture (represented by arrows traveling upward towards a field), only a small amount of the water makes its way into aquifers (represented by a small arrow pointing back down towards the ground). On the right side of the illustration, additional arrows show that the rest of the groundwater runs off the fields into a stream that flows into rivers and then the ocean (represented by boats).
July 26, 2025 at 1:56 PM