http://www.enn.com/wildlife/article/46112
Over the summer, the researchers has indicated that pesticide is dangerous to the aquatic life because it alter the ecosystems, cause nuisance, and spread disease. The decrease in biodiversity was due to several species being susceptible to pesticides and it is affecting the food chain. The species that are decreasing are mostly flies because their habitat is around littoral zone, meaning contact with both surface and water. According to ecotoxicologist, Matthias Liess, Pesticides always cause impact on the ecosystem, no matter what protection was created.
Tuesday, October 29, 2013
Wednesday, October 23, 2013
New Storm off Mexico's Pacific Coast
http://www.reuters.com/article/2013/10/20/us-mexico-storm-idUSBRE99J00P20131020
Acapulco, a city that was flooded last month, is getting threaten by a new storm coming off Mexico's Pacific coast. Mexico had suffered the worst flooding from Manuel and Ingrid's tropical storms last month. The tropical storm have killed more than 150 people and causing a lot of damage near $6 billion. Acapulco was one of the place worst hit by the event and the NHC had stated that the tropical storm is moving futher northwest at about 8 mph. The maximum sustained winds of depression is 35 mph. They expect the weather front to move slowly toward the coast near Acapulco in the next few days. Also, Mexico has no major oil installations.
Acapulco, a city that was flooded last month, is getting threaten by a new storm coming off Mexico's Pacific coast. Mexico had suffered the worst flooding from Manuel and Ingrid's tropical storms last month. The tropical storm have killed more than 150 people and causing a lot of damage near $6 billion. Acapulco was one of the place worst hit by the event and the NHC had stated that the tropical storm is moving futher northwest at about 8 mph. The maximum sustained winds of depression is 35 mph. They expect the weather front to move slowly toward the coast near Acapulco in the next few days. Also, Mexico has no major oil installations.
Wednesday, October 16, 2013
Death of a Spruce Tree
http://esciencenews.com/articles/2013/10/03/death.a.spruce.tree
The climate change has a huge effect on the health of forests. The study showed that the forest fire is not happening which caused the dead trees to not be replaced by new ones. Also, due to the climate change, the growing of the tree is harder to estimate because they believed that the trees are storing more CO2. Bond-Lamberty had stated that "We need to understand forests in the long term, but forests change slowly and researchers don't live that long." This is correct because for some trees, it takes 100 of years for it to become a full size adult tree. In the NASA-led BOREAS project in 1990s, they studied the Northern Old Black Spruce site and collected samples from 3 different years between 2001-12. They had suggested that the slow-growth years was due to low rainfall and high temperature. Then, they found a bigger territories where the oldest trees started growing in the mid-1800s, and Bong-Lamberty stated that between the 5 years, the trees are dying and not being replaced. Also, the fact that the tree takes in CO2, the study shown that the middle-aged trees fatten up. As the period continued the world will get warmer and it will be a rotten time for the forest.
The climate change has a huge effect on the health of forests. The study showed that the forest fire is not happening which caused the dead trees to not be replaced by new ones. Also, due to the climate change, the growing of the tree is harder to estimate because they believed that the trees are storing more CO2. Bond-Lamberty had stated that "We need to understand forests in the long term, but forests change slowly and researchers don't live that long." This is correct because for some trees, it takes 100 of years for it to become a full size adult tree. In the NASA-led BOREAS project in 1990s, they studied the Northern Old Black Spruce site and collected samples from 3 different years between 2001-12. They had suggested that the slow-growth years was due to low rainfall and high temperature. Then, they found a bigger territories where the oldest trees started growing in the mid-1800s, and Bong-Lamberty stated that between the 5 years, the trees are dying and not being replaced. Also, the fact that the tree takes in CO2, the study shown that the middle-aged trees fatten up. As the period continued the world will get warmer and it will be a rotten time for the forest.
Wednesday, October 9, 2013
Longer Life for human leads to the loss of endangered species
http://www.sciencedaily.com/releases/2013/10/131009130122.htm
This study was published in September issue of Ecology and Society that as the population of human increases, birds and mammals are endangered. The study analyzed data from 100 countries and had explained that New Zealand, United States, and Philippines had the highest percentages of the endangered and invasive birds. Africa has the lowest percentage of invasive and endangered birds and mammals. It has a limit international trade, which gave less chance for biological invasion.
This study was published in September issue of Ecology and Society that as the population of human increases, birds and mammals are endangered. The study analyzed data from 100 countries and had explained that New Zealand, United States, and Philippines had the highest percentages of the endangered and invasive birds. Africa has the lowest percentage of invasive and endangered birds and mammals. It has a limit international trade, which gave less chance for biological invasion.
Wednesday, October 2, 2013
Researchers have generated gasoline from bactoria
http://www.nature.com/nature/journal/vaop/ncurrent/full/nature12536.html
The concerns about limited fossil fuels and the global environmental problem have focused attention on the develop biofuel from renewable resources. Researchers from Korea have engineered Escherichia coli stains that are capable of producing short chain alkanses, fatty acids, fatty esters, and fatty alcohols through the fatty acyl to fatty acid to fatty acyl-CoA pathway. They started off blocking the pathway of B-oxidation and to increase the short-chain fatty acids by deleting the fadR gene. Then, a modified thioesterase was used to convert short-chain fatty acyl-ACPS to the correspinding FFAs. The final engineered strain consist of nonane, dodecane, tridecane, 2 methyl dedocane, and tetradecane, which chain with small amounts of hydrocarbons.
The concerns about limited fossil fuels and the global environmental problem have focused attention on the develop biofuel from renewable resources. Researchers from Korea have engineered Escherichia coli stains that are capable of producing short chain alkanses, fatty acids, fatty esters, and fatty alcohols through the fatty acyl to fatty acid to fatty acyl-CoA pathway. They started off blocking the pathway of B-oxidation and to increase the short-chain fatty acids by deleting the fadR gene. Then, a modified thioesterase was used to convert short-chain fatty acyl-ACPS to the correspinding FFAs. The final engineered strain consist of nonane, dodecane, tridecane, 2 methyl dedocane, and tetradecane, which chain with small amounts of hydrocarbons.
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