Showing posts with label temperature. Show all posts
Showing posts with label temperature. Show all posts

Bill Shopf's WA Rocks are not Microfossils

The conclusion reached by Bill Schopf that tiny carbon-rich filaments in Pilbara rock of Western Australia show the presence of fossils is now proved to be incorrect. There has been debate about the issue since Bill Schopf made his announcement.
Bill William Shopf Pilbara Rocks Microfossils
Tests indicate that they are just rocks. Professor Martin Brasier first highlighted the problem in 2002, when he claimed that the rocks were part of a high-temperature thermal vein. In other words they were not sedimentary in nature.

New high-spacial resolution examination indicates stacks of clay-like mineral plates in the rocks' structure. Carbon has been absorbed into the worm-like chains giving the impression of cell walls.  Carbon distribution was completely wrong for microfossils. The "mischievous" clay plates are the culprit in leading scientists astray in their findings.

Authentic microfossils just as old as the Shopf example have recently been found in Western Australia, so the claim for the oldest fossils still resides with WA.
✴ Chemistry by Ty Buchanan ✴
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Climate Change Could Make Timid Animals More Aggressive

Climate change can cause changes in behavior. As water becomes warmer so some species of fish become aggressive. Some fish are inherently timid while others are bold. In experiments on fish from the Australian Barrier reef, when water was slowly warmed normally timid fish became aggressive. Their rate of activity increased as well. Evolution has created fish that fit into a niche where survival depends on a fish being very careful about its surroundings. If they openly attack larger fish it could mean the smaller ones will be eaten.

It is possible that similar changes will occur with reptiles, amphibians, ectotherms and even mammals. If timid animals become bold then they could be killed off by predators or by humans using harvesting equipment trying to catch other animals for food. Only a very small increase in temperature led to the change.

In the tests, fish were bred in captivity then released into holding tanks where the water was slowly warmed. They had no chance to socialize with wild fish. When the water was cool the fish hid in plastic pipe. As the water heated up the fish ventured further from the protective pipe.

Certain assumptions can be made from this research. As the Arctic ice disappears, Polar bears wandering near small towns in Alaska, Canada and Northern Europe could become more brazen in their search for food from garbage cans and dump sites. They could kill humans more frequently in their anger. Similarly, rats living in these cold climes may not just die of shock when hit. They could turn on people and fight back.
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Conservation
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Caterpillars Are Changing into Butterflies Earler

Climate change is making butterflies more active. They are coming out 10 days earlier than they used to in spring. The change has been caused by a 0.91ºC increase in temperature in Melbourne. All species that interrelate with the Common Brown butterfly (Heteronymph Merope) breed earlier as well.

A group of academics funded by the Australian Research Council has researched this issue. Members of the group studied caterpillars bred at the old and new temperature in the laboratory and noted the change. Observation of the butterfly in the wild has confirmed that caterpillars are changing into butterflies earlier.

If butterflies are coming out sooner then other insects must be doing so as well. This means that crops will have to be planted earlier to be fertilized by insects. Bees are not the only insects needed to grow crops.  People in cities do not understand the importance of pollination on food crops.
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Entomology
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Tasmanian Glow Worms Can Tell the Time

Glow worms can tell the time. Yes it's true! An Australian researcher has found that glow worms "light up" during daylight hours, even though they are in total darkness 24 hours a day.

It is only a Tasmanian species of glow worm, however. Mainland species glow day and night. It is not known how they detect that it is daylight outside the cave.

It is thought that a chimney effect occurs in a cave, whereby air is "breathed" in and out from outside. This probably causes a change in temperature. Glow worms possibly use the temperature stimulus to choose when to glow and when not to glow.
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Biology
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Caterpillars Are Changing into Butterflies Earler

Climate change is making butterflies more violent. They are coming out 10 days earlier than they used to in spring. The change has been caused by a 0.91ºC increase in temperature in Melbourne. All species that interrelate with the Common Brown butterfly (Heteronymph Merope) breed earlier as well.

A group of academics funded by the Australian Research Council has researched this issue. Members of the group studied caterpillars bred at the old and new temperature in the laboratory and noted the changed. Observation of the butterfly in the wild has confirmed that caterpillars are changing into butterflies earlier.

If butterflies are coming out sooner then other insects must doing this as well. This means that crops will have to be planted earlier in to be fertilized by insects. People in cities do not understand the importance of pollination on food crops.
. . . . . . . . . . . . . .
Labels: , , , , , , , , ,

Climate Change Could Make Timid Animals More Aggressive

Climate change will cause changes in behavior. As water becomes warmer so some species of fish become aggressive. Some fish are inherently timid while others are bold. In experiments on fish from the Australian Barrier reef, when water was slowly warmed normally timid fish became aggressive. Their rate of activity increased as well. Evolution has created fish that fit into a niche where survival depends on a fish being very careful about its surroundings. If they openly attack larger fish it could mean the smaller ones will be eaten.

It is possible that similar changes will occur with reptiles, amphibians, ectotherms and even mammals. If timid animals become bold then they could be killed off by predators or by humans using harvesting equipment trying to catch other animals for food. Only a very small increase in temperature led to the change.

In the tests, fish were bred in captivity then released into holding tanks where the water was slowly warmed. They had no chance to socialize with wild fish. When the water was cool the fish hid in plastic pipe. As the water heated up the fish ventured further from the protective pipe.

Certain assumptions can be made from this research. As the Arctic ice disappears, Polar bears wandering near small towns in Alaska, Canada and Northern Europe could become more brazen in their search for food from garbage cans and dump sites. They could kill humans more frequently in their anger. Similarly, rats living in these cold climes may not just die of shock when hit. They could turn on people and fight back.
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