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Originally posted by Quazga
reply to post by Animal
You are the next contestant on THE IGGY LIST!
You have spent so much time trying to debunk the data in this post that you have pretty much ruined the thread.
"How Enriched Carbon Dioxide Environments May Alter Biotic Systems Even in the Absence of Climatic Changes"
By Eric D. Fajer of Harvard University, Printed in Conservation Biology, Vol. 3, No. 3 (september 1989) pp 318-320.
In elevated C02 environments, growth is enhanced for many plant species. However, some plant species respond more positively to these new conditions than other species.
Because of that, I've got to make sure not to get drawn into any kind of discussion with someone as emotionally erratic as yourself.
Someone said something about a family member working with satellite data, and said we can tell everything from space. That is not true. Working as a conservation biologist (my past) I know for a fact you can get a lot of GENERAL data from satellite images and aerial photos, but it is GENERAL. We always had to do research "on the ground" to develop and conclusive data.
To say that a satellite was able to tell us what was happening in the images we see, other than the general idea, is disingenuous.
Abstract: We assembled a time series of 20 Landsat thematic mapper images from 1982 to 1996 for Key Largo, Florida, to ascertain whether satellite imagery can detect temporal changes in coral reef communities. Selected reef and control areas were examined for changes in brightness, spectral reflectance, band ratios, spatial texture, and temporal texture ( pixel-to-pixel change over time). We compared the data to known changes in the reef ecosystem of Carysfort Reef and terrestrial sample sites. Changes in image brightness and spectral-band ratios were suggestive of shifts from coral- to algal-dominated community structure, but the trends were not statistically significant. The spatial heterogeneity of the reef community decreased in the early 1980s at scales consistent with known ecological changes to the coral community on Carysfort Reef. An analysis of pixel-scale variation through time, termed temporal texture, revealed that the shallow reef areas are the most variable in regions of the reef that have experienced significant ecological decline. Thus, the process of reef degradation, which alters both the spatial patterning and variability of pixel brightness, can be identified in unclassified thematic mapper images.
You are correct that the satellite does not 'tell you' what is happening in the images. You would have to be intelligent enough to know the application of remote sensing data and the very detailed specific information it can tell you about eco system trends.
Selected reef and control areas were examined for changes in brightness, spectral reflectance, band ratios, spatial texture, and temporal texture (pixel-to-pixel change over time). We compared the data to known changes in the reef ecosystem of Carysfort Reef and terrestrial sample sites.