The last Ice Age was the beginning of the extinction of many species. Read the following article. Loss of species after Ice Age seen as warning. What do the fossils reveal? How much did populations decline? Did all species decline? Why/why not? Give an example.Monday, May 24, 2010
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The fossils reveal how the changing climate affected the populations of animals during that time. They display the rise to prominence of certain species and the diminishing populations of others and in general, the diversity of the animals on earth at the time. Certain animal populations declined greatly (many to extinction) and the overall animal diversity dropped by thirty percent. However, not all animals saw a decrease in their number. Small animals like deer mice, mountain beavers and Mazama gophers remained at about the same abundant amount.
ReplyDeleteThe fossils of small mammals were excavated in a cave near Shasta County. The fossils showed how the changing climate during their time changed the way the animals were distributed as some populations became dominate while others died out. They found that the climate changes in the past caused many changes in the diversity of different animal populations. The scientists are looking at this as to what may happen to us, because of global warming. The fossils yield many clues as to what happened in the past, and what the future may be like.
ReplyDeleteThe fossils that the scientists found revealed that climate changed affected the dominant species of that time. The main dominant species changed after the climate change to other relatively smaller animals. Scientists are worried that Global Warming might affect us like it climate change affected the earlier species. From this research on this website it concerns me about Global Warming and urges me to start helping the environment so that the climate change doesn't change our lives like it changed the earlier species lives.
ReplyDeleteFossils show how the rapidly changing climate affected the animals of that time. During the last major Ice Age, several animal populations declined rapidly, and many species became extinct. Other animals, however, did not seem to be greatly affected by the rapid climate change. Small rodents like mice, beavers, and gophers maintained their populations against the harsh changes. This is because these small animals were better able to adapt or were better suited to the changing climate than those species which went extinct.
ReplyDeleteThe fossils show how the climate change affected the biodiverstiy of the area. Some animals in the area greatly declined, and some even went extinct. However, not all the species in the area declined. For example the deer mice population increased due to the fact that they can eat almost anything and thrive in almost any climate.
ReplyDeleteThe fossils reveal how the changing climate sharply altered the pattern of their distribution as some populations rose to dominate the landscape. Today the deer mice are all over the place they're now by far the dominant population in the region because they're generalists that can eat anything and thrive anywhere apparently in any climate. The population of the deer mice doubled between 16,000 and 13,000 years ago. None of the small animals became extinct during the long period because of the warming in the past that disrupted the diversity of those animal communities.
ReplyDeleteJael 6*
Scientist have researched fossils found in a cave in Shasta county. They found that the diversity of animals was majorly affected after the last ice age ended. Since the climate changed to be much warmer some small animals had a harder time surviving. They had to seek higher elevation for a cooler climate. Although none of the small animals became extinct the dominate species changed. Like deer and mice, they are found all over the place because they have less specific diets than others. They also can survive in many climates.
ReplyDeleteThe fossils reveal how the change in climate altered the pattern of their distribution as other populations dominated the landscape. The populations declined about thirty percent. Although, not all animals declined. Today, for example, there are mice everywhere because they can eat anything and can survive in any climate.
ReplyDeleteAccording to the article, the fossils from the last ice age shows evidence that the weaker animals survived, but the stronger animals didn't. This is mosts likely due to the fact that the stronger animals were stronger because they were more adapted to that climate, and were incapable of switching so quickly. However, the weaker animals were not so specialized, and so they maganed to get through the sudden change.
ReplyDeleteThe fossils reveal the changes in the climate and how the climate changes affected the animal at that time. Fossils are small mammals that once lived on earth in a cave near Shasta County. From the last ice age a lot of animal populations have declined rapidly. Since the last ice age temperatures have risen by 7 to 12 degrees Fahrenheit. Not all species declined smaller animals like mice have not declined.
ReplyDeleteThe fossils found in Shasta County reveal how the changing climate affected the population of different species. It showed that some species became more dominate while others became extinct. Scientists discovered that climate change in the past resulted in diversity of different animal population. They are seeing this as to what might happen to humans.
ReplyDeleteWhen the last ice age happened it completely decimated the biodiversity. Creatures that were once dominant went extinct. Fossils tell us everything that we need to know about what happened to most of the life. However some species were able to prosper in the extreme environment such as the deer mice. It all depends on the capability of the animal to adapt.
ReplyDeleteThe fossils in the cave revealed the distribution of the animals in the area during the Ice Age had changed in the current day. There was a thirty percent decline in the overall biodiversity of the area. However, not all populations declined.
ReplyDeleteSome species, such as mice and deer, thrived when the temperature warmed because it allowed them to eat a larger variety of food because they are generalists and will eat anything. Species such as beaver and gophers were forced north to look for wetter habitat and an adequate food source.
The fossils reveal how the climate change effected the rise of certain populations and the extinction of others. The climate change after the last Ice Age caused the diversity of animal populations to decrease. The population declined by 30% but not all of the animals decreased. Some animals, such as deer mice remained at a consistent amount. Animals like deer mice, mountain beavers, and mazama gophers all thrived abundantly due to the climate change.
ReplyDeleteThe fossils that the scientists have uncovered have shown that the climate change changed the patter of distribution of animals during that time. Many species of animals declined in population or even went extinct, but others flourished during this time. For example, the deer mice were able to survive very well because they adapted very easily to the changing environment.
ReplyDeleteFossils reveal the remnants of the past. Fossils have helped give archaeologists an idea on what living and non-living creatures were around before human record. The earth has been around for over a million years, and without fossils we would have never known that. Evidence supported by the excavation of fossils have proven that great declines in a species population has occurred do to a decrease in temperature. The earth has been home to several ice ages over its lifetime. These ice ages have caused many species to become extinct, as well as new species to grow.
ReplyDeleteDaniel M 6*
Scientists have studied the thousands of fossils from the last Ice Age. They have come to conclude that many species were negatively affected by the this harsh change in climate. Many of the animal populations decreased or even became extinct, but not all of them; small rodents were able to maintain their population size. Scientists fear that our future will be like this because of global warming. Species around the world will be affected in a way that biodiversity will be in peril.
ReplyDelete