Constructing a life table is a simple method for keeping track of births, deaths, and reproductive output in a population of interest. Basically, there are three methods of constructing such a table: 1) the cohort life table follows a group of same-aged individuals from birth (or fertilized eggs) throughout their lives, 2) a static life table is made from data collected from all ages at one particular time-it assumes the age distribution is stable from generation to generation, and 3) a life table can be made from mortality data collected from a specifed time period and also assumes a stable age distribution. An important sidenote to remember about population life tables is that for organisms that have seperate sexes, life tables frequently follow only female individuals.~I've included a link below that shows an age-dependent life-table that is well organized and easy to follow! http://home.comcast.net/~sharov/PopEcol/lec6/agedep.html
Thursday, December 8, 2011
Monday, November 28, 2011
Making biodiesel and bioethenal
Making biodiesel fuel:
Biodiesel is basically diesel fuel that you can make yourself. It is biodegradable, non-toxic, renewable, and it will work in any diesel engine without any engine modifications. You make Biodiesel out of animal or vegetable oils such as soybean, canola, or used restaurant fryer grease.Many can make their own biodiesel fuel for $1 per gallon!
http://www.youtube.com/watch?v=pL-M2IzYGuU
This video gives helpful step by step instructions about how to make biodiesel at home!
Making bioethanol fuel:
Lots of people make a fuss about how ethanol costs more per gallon and is less efficient to produce than gasoline. One thing is certain: Ethanol production does have a lot of variables: everything from the feedstock (bio-material required to make ethanol fuel), all the way to the equipment used to distill it. One way you can control both of these variables, however, is to make your own ethanol.
Making your own ethanol can be fun, cost-effective and better for the environment. There are many positives to making your own bioethenal. Your engine will run cleaner and there will be a reduction in the amount of toxic emissions that burning gasoline produces. It's a relatively simple process: All you need is some form of feedstock, a way to ferment it and a way to distill it. Basically that's it. Of course, there's also a certain level of danger involved in producing your own ethanol as well.
http://www.youtube.com/watch?v=rmFwSogNAEc
This video discusses how to make bioethanol!
Biodiesel is basically diesel fuel that you can make yourself. It is biodegradable, non-toxic, renewable, and it will work in any diesel engine without any engine modifications. You make Biodiesel out of animal or vegetable oils such as soybean, canola, or used restaurant fryer grease.Many can make their own biodiesel fuel for $1 per gallon!
http://www.youtube.com/watch?v=pL-M2IzYGuU
This video gives helpful step by step instructions about how to make biodiesel at home!
Making bioethanol fuel:
Lots of people make a fuss about how ethanol costs more per gallon and is less efficient to produce than gasoline. One thing is certain: Ethanol production does have a lot of variables: everything from the feedstock (bio-material required to make ethanol fuel), all the way to the equipment used to distill it. One way you can control both of these variables, however, is to make your own ethanol.
Making your own ethanol can be fun, cost-effective and better for the environment. There are many positives to making your own bioethenal. Your engine will run cleaner and there will be a reduction in the amount of toxic emissions that burning gasoline produces. It's a relatively simple process: All you need is some form of feedstock, a way to ferment it and a way to distill it. Basically that's it. Of course, there's also a certain level of danger involved in producing your own ethanol as well.
http://www.youtube.com/watch?v=rmFwSogNAEc
This video discusses how to make bioethanol!
Mitochondrial Eve
In 1987, a group of geneticists examined the mitochondrial DNA (mtDNA) taken from 147 people across all of today's major racial groups. These researchers found that the lineage of all people alive today falls on one of two branches in humanity's family tree. One of these branches consists of nothing but African lineage, the other contains all other groups, including some African lineage.
Even more impressive, the geneticists concluded that every person on Earth right now can trace his or her lineage back to a single common female ancestor who lived around 200,000 years ago. Because one entire branch of human lineage is of African origin and the other contains African lineage as well, the study's authors concluded Africa is the place where this woman lived. The scientists named this common female ancestor Mitochondrial Eve.
Even more impressive, the geneticists concluded that every person on Earth right now can trace his or her lineage back to a single common female ancestor who lived around 200,000 years ago. Because one entire branch of human lineage is of African origin and the other contains African lineage as well, the study's authors concluded Africa is the place where this woman lived. The scientists named this common female ancestor Mitochondrial Eve.
Amphioxus
Amphioxus is a noun for a small translucent lancet-shaped burrowing marine animal; primitive forerunner of the vertebrates.
Amphioxus are usually found buried in sand in shallow parts of termperate or tropical seas . In Asia, they are harvested commercially as food for humans and domesticated animals . They are an important object of study in zoology as they provide indications about the origins of the vertebrates.. Lancelets serve as an intriguing comparison point for tracing how vertebrates have evolved and adapted. Although they supposedly split from vertebrates more than 520 million years ago, their genomes hold clues about evolution, particularly how vertebrates have employed old genes for new functions.
Macon Dog Park
Darwin's Dilemma
“Darwin’s dilemma” refers to Charles Darwin’s bafflement that the fossil record contradicted what his theory of evolution predicted. In his classic book On the Origin of Species, Darwin declared that if his theory of evolution were true “it is indisputable that before the lowest Cambrian stratum was deposited… the world swarmed with living creatures.” Yet Darwin admitted that the fossil record below the Cambrian strata seemed to be deprived of such creatures. Instead “species belonging to several of the main divisions of the animal kingdom suddenly appear in the lowest known fossiliferous rocks”—without any evidence of prior ancestral forms. Darwin frankly acknowledged that this lack of ancestral forms was “a valid argument” against his theory. But he hoped that time—and more research—would provide the evidence that was lacking. Researches now acknowledge how Darwin’s dilemma has been aggravated—not resolved—by the last century of fossil discoveries, starting with the strange and wonderful creatures uncovered a century ago in the Burgess shale in British Columbia, Canada.
Sunday, November 6, 2011
Hitchiti Experimental Forest
The Hitchiti Experimental Forest occupies 4,735 acres of land in Jones County, Georgia about 18 miles northeast of Macon. It lies on the east bank of the Ocmulgee River in the lower piedmont. The areas first known inhabitants were the Hitchiti Indians. In 1946 the Federal Government established the Hitchiti Experimental Forest that now makes up the Brender Demonstration Forest. Today the Forest is an active research facility of the USDA Forest Service Southern Research Station.
We saw lots of diverse vegetation on our hike including Wild Ginger and Sassafras!
Wild Ginger!
Sassafras!
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