6 ms·

It's Getting Too Hot for Tropical Trees to Photosynthesize, Scientists Warn

12 points by botanical 3y ago

mutant_glofish 3y ago
> about 0.01 percent of leaves in the world’s tropical forests may already surpass this critical temperature in a typical year
- botanical 3y ago
  Tropical forests, or jungles trees account for 45% (or 1.5 trillion trees) of all the trees on Earth. So it isn't negligible.
bloopernova 3y ago
It feels like people are in massive denial about current climate events. Have so many people just given up?
- readthenotes1 3y ago
  Well, 100% of the leaves in the deforested part of the Amazon lost their ability to do photosynthesis and we haven't done much about that either
- RGamma 3y ago
  This was here recently: https://www.mdpi.com/2673-4060/4/3/32 https://www.mdpi.com/2673-4060/4/3/32 It may be light on actual analysis, but it's a nice summary of events and dynamics.
oldandtired 3y ago
If you read the article carefully, there is quite a disconnect between what they are saying and what they actually measured. If the article is correct about what they did actually measure then the study is mostly useless. To validate their hypothesis, they would need to get into the regions and place measuring equipment to collect on the ground in-situ data. Notice that their measurements were taken from space, which is really only a precursor set of data. They need to get into the forests and do onsite measurements to validate or invalidate their ideas. The space data would tell them where to set up their measuring stations. Now that data would be quite intriguing as it should show up just how critical the problem is. It may well be more critical than they estimate This kind of experimental technique is quite faulty and incomplete. For me, it would be great to see a really comprehensive set of data taken at many points over a large region.
- RetroTechie 3y ago
  Ehm... "The ECOSTRESS data, along with follow-up measurements from the ground (..)" Looks like they did validate satellite data with ground measurements?
  - oldandtired 3y ago
    It depends on just how much data and how extensive that data collection was. I have recently being trying to get data on various projects and when you read their fine print associated with that data, it is not any where near as extensive as they imply. I have my doubts that the data collected in this case is sufficient for the claims made based on what I have seen occurring elsewhere.

12 points by botanical 3y ago

> about 0.01 percent of leaves in the world’s tropical forests may already surpass this critical temperature in a typical year

botanical 3y ago
Tropical forests, or jungles trees account for 45% (or 1.5 trillion trees) of all the trees on Earth. So it isn't negligible.

bloopernova 3y ago

It feels like people are in massive denial about current climate events. Have so many people just given up?

readthenotes1 3y ago
Well, 100% of the leaves in the deforested part of the Amazon lost their ability to do photosynthesis and we haven't done much about that either
RGamma 3y ago
This was here recently: https://www.mdpi.com/2673-4060/4/3/32 https://www.mdpi.com/2673-4060/4/3/32 It may be light on actual analysis, but it's a nice summary of events and dynamics.

oldandtired 3y ago

If you read the article carefully, there is quite a disconnect between what they are saying and what they actually measured. If the article is correct about what they did actually measure then the study is mostly useless. To validate their hypothesis, they would need to get into the regions and place measuring equipment to collect on the ground in-situ data. Notice that their measurements were taken from space, which is really only a precursor set of data. They need to get into the forests and do onsite measurements to validate or invalidate their ideas. The space data would tell them where to set up their measuring stations. Now that data would be quite intriguing as it should show up just how critical the problem is. It may well be more critical than they estimate This kind of experimental technique is quite faulty and incomplete. For me, it would be great to see a really comprehensive set of data taken at many points over a large region.

RetroTechie 3y ago
Ehm... "The ECOSTRESS data, along with follow-up measurements from the ground (..)" Looks like they did validate satellite data with ground measurements?
- oldandtired 3y ago
  It depends on just how much data and how extensive that data collection was. I have recently being trying to get data on various projects and when you read their fine print associated with that data, it is not any where near as extensive as they imply. I have my doubts that the data collected in this case is sufficient for the claims made based on what I have seen occurring elsewhere.