Wednesday, January 27, 2010

Can Climate Change Drive Evolution?

Scientists say that our climate is changing (we will study all about climate change during our ecology unit).  According to the Enviromental Protection Agency (EPA),
"Average global temperature has increased by almost 1ºF over the past century; scientists expect the average global temperature to increase an additional 2 to 6ºF over the next one hundred years."  

How does climate change relate to evolution?  Read the following article:  Carnations had evolutionary bloom boom in Europe - New species have evolved at a surprisingly rapid pace by Laura Sanders.  Describe how the flower has evolved and the role of climate change in this evolution.

10 comments:

  1. A certain type of carnation has evolved in Europe. Scientsits can link this new flower developing in times of climate change. This is the result of speciation, or the formation of new species as a result of change in environmental factors. When the climate changed from a humid one to a more temperate one, these flowers began adapting to their environment and even made a new type of carnation. Other environmental factors can also cause an impct in diversification.

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  2. There is a debate about whether climate change is a major factor in speciation, new species of mammals evolve when significant climate change happens over a very long period of time. When mammals can't move to habitats that provide favorable climate, climate change leads to evolutionary changes or extinction. Fossils provide clues that can help predict effects on species in the current warming trend.

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  3. The carnations must adapt to their changing environment. If they do not, they will die out. Over the past million years, this flower has changed everything from its stem size, petal shape, and even the time of the year that it is in bloom, so that it could survive with the help of certain pollinators. These rapid changes are quite uncommon among species, and correlate with changes in weather and the earth's temperature.

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  4. Scientist are linking the speciation of new carnation flowers with climate changes. Through their studies they see that the rate of evelution is not constant. And whats more is that the peeks in the rate of eveolution coniside with the changing climate. More Dianthus plants evovle with more dry summers. This new information shows scientists that climate effects evolution.

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  5. New carnations in such a short time is just what happens when organisms are faced with a changing enviroment. These climate changes will definitely affect the enviroments and habitats that are on the earth. Creatures like polar bears and penguins already experience climate change with an increase of temperatures like 1 degree, temperatures increasing around 2-6 degrees is definetely strong enough to extinct many different species. Or the climate changes can speed up evolution like in the carnations

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  6. I thought these two articles were very interesting. Not only am I interested in learning about the changes that are to come for our planet and what we can do about it, but also how other organisms are affected by the changes. In the second article, about carnations, I learned that the rate of evolution for these flowers has risen to an unusal increasing number. They have changed in stem size and petal shape. Scientists have linked these rapid changes to their now changing environments. As the climate in Europe became drier in the summer, different species of carnations started to appear. We'll have to see how other plants and animals change to this increasing temperature of Earth.

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  7. New Dianthus species have arisen form 2.2 to 7.6 every million years. The rate later jumped seven to eight times higher. This increase effected the climate and changed. The region changed from a humid environment to a wet winter and dry summer. Researchers say that the dry summers affected the sudden growth in the new Dianthus. The flowers have an unusual dry summer blooming pattern. The new Dianthus bloom more in the summer than in the spring. The strong pressure to attract summer pollinators have pushed the flowers to change more than other plants. This is how the flowers have evolved over time, and this shows that climate changes can have a huge effect on certain plants.

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  8. The climate highly affects these carnations. The carnations needed to change petal shape and tube length according to the weather and environment they were living in. This shows evolution because it shows the carnations' change over time and how they had to adapt to their environment.

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  9. How can the climate affect on how flowers grow and have their design. When I went to Mexico I saw that the plants that are here they arn't over ther. The plants form Mexico die when ice comes down from the sky so in order to protect them they cover them. Here I see that plant arnt coverd when ice falls. When I read this artical I know understand that climate and time affect on how a plan grows and how it comes.

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  10. Luis Valente provides the information for the study of the speciation of the Diarthus by analyzing certain traits of these carnations. These carnations have over three hundred different species, one hundred of which are found in Europe. Most scientist go to exotic locations for evolutionary studies but intruth the carnations are rapidly diversifying right under our noses. It seems that this growth of speciation could possible relate the change of climate in Europe. The flowers seem to bloom in hotter weathers but they are now blooming at an alarming rate. These studies are continuing before any definite conclusions can be made.

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