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Aerobacter bacteria are released into the atmosphere from the leaves of trees during transpiration. It has been found that these bacteria are responsible for the rain formed by the air rising from rainforests, the bacterial cells forming the nuclei around which raindrops form. It has been known for many years that forests, in particular rainforests, alter the climate downwind from them, now Dr Mary White said the sustainable science team, based in Canberra, found that the bacteria are very important in the process of rain formation. The bacteria are released by all broad-leafed plants, but rainforests are much more efficient emitters than other vegetation types. The clouds formed by the condensation around the bacterial particles don't just increase the amount of rain, but contribute greatly to the albedo of the planet, the amount of sunlight, and hence heat, that is reflected back into space, and keeping the temperatures of the earth comfortable.
It has been known for some time that it is necessary to reduce the amount of carbon dioxide, methane and nitrous oxides in the atmosphere to try to halt continuing global warming. It is also known that the reduction of greenhouse gases alone is not sufficient to keep the temperatures down, a number of other factors influence the climate - cloud cover, by reflecting solar radiation (heat) back into space, the albedo of land and water surfaces. Again, the reflectance of radiation, the transfer of heat to the upper atmosphere from the surface of the Earth, via evaporation and/or transpiration of water from foliage, in that it governs the amount of heat, that is not trapped by greenhouse gases, that is re-radiated to space. And finally the levels of greenhouse gases in the atmosphere. These gases include water vapour, that accounts for 60 %, carbon dioxide 20 %, methane and nitrous oxide combined account for 20 %.
In past episodes of global warming, when it could only have been the result of natural processes, there were vast areas of forest and expanses of ocean containing algae that could eventually help bring the temperatures back to the sort of levels preferred by humans. This is no longer the case. Most of the rainforest of the Earth, and probably even more of the non-rainforest broad-leafed vegetation, has been removed for various reasons. This has now been shown to have potentially a much greater effect than previously believed, before the role of bacteria released from foliage in cloud formation was known. It has previously been found that rainfall over areas of rainforest was higher than over other areas, and it was not always the result of high ground (orographic effect). In Western Australia it can been seen that natural woodland areas tend to have more rain than areas cleared for agriculture. These drier agricultural areas are often closer to the coast were the air tends to be more humid than further inland, so would previously have received more rainfall.
Human interference had altered the surface of the earth long before the present era (Thomas, 1956). The first major change started about 7000 years ago when man developed agriculture. This led to systematic changing of forested areas to fields and pastures. Other reasons for deforestation were the needs for structural timber and lumber. In recent times, paper requirements have led to large-scale reductions of forests. Only gradually is a systematic harvesting and replacement policy taking over.
Agriculture and lumbering have undoubtedly led to mesoscale climatic changes, but these are poorly documented, although one can make some approximate guesses at their magnitude. In many instances secondary changes have been more far-reaching. After the clearing, wind and water erosion have washed or blown the top soil away. Bare rock has become exposed, and now far more extreme temperatures and lower humidities prevail where once the even-tempered mesoclimate of the forest dominated. Stretches of Anatolia, the Spanish plateau, and some slopes of the Italian Apennines are silent witnesses to this development.
But by far the most alarming development has been the substitution of rocklike, well-compacted, impermeable surfaces for vegetated soil, a development that is the natural consequence of urbanization. Square kilometer after square kilometer has yielded to the bulldozer and has been converted to buildings, highways, and parking lots. Reservoirs and irrigation also have become important.
maybe they are afraid of what will be found out.
I guess we destroyed pretty much of a paradise in many locations when we came here.
The butterfly effect must be taken seriously, at the very least the near infinite complexity must be keep in mind when talking about anything in nature.
originally posted by: hopenotfeariswhatweneed
originally posted by: skunkape23
I've done my part. Planting things is good.
One of my best friends is an old oak tree. I speak to it the same way I would anything else.
She likes the haircut I gave.
is she pretty and what is her name ?
they grow in the humus created over hundreds of years. But they still die off.
Maybe if I got some wild unaltered potatoes to plant, they would do better. I have one bunch of potatoes I have been working with for four years now, they product about five small potatoes to a plant with no work other than originally planting them. They seem to live symbiotically with the trees too, that was something I made sure of. They seem compatible. They are from some Mountain potatoes which originally grew big potatoes. I like the small ones best boiled with skins on.
originally posted by: rickymouse
a reply to: MichiganSwampBuck
You need a combination of things for an ecosystem to work best. Some clearings and some forests. A forest is not ten acres of land, it is thousands of acres. You also need plots of trees to break the wind and cause some turbulance to cause it to rain. I have been in many states and seen many fields with little areas of trees except apple orchards by the house. Now, this has gotten excessive, they are messing things up.
originally posted by: Blue Shift
Well, no matter what actually causes the average global temperature to rise, if you look at a chart detailing the advances and retreats of civilization over the past 5,000 years or so, civilization seems to do better when the temperature is a little warmer than when it is a little colder.