Wednesday, April 30, 2014

The Botany Of Desire

Tulip Flower Garden
-Vera Kratochvil, Publicdomainpictures.net

Beauty. over years of coevolution between humans and tulips, tulips have managed to captivate us through their vibrant colors and eye-soothing shapes. They ensure their survival as a species by aesthetically pleasing the gardeners which plant them.

Green Apple In Hand
-Petr Kratochvil Publicdomainpictures.net

Sweetness. The apple knows just what we want, that crispy, sweet, juicy taste. If the apple ever decided to evolve into something bitter, then the species will no doubt be in danger as we stop planting it.


Marijuana
-Junior Libby, Publicdomainpictures.net

Intoxication. Joints, doobies, bongs, hash brownies, you name it...Weed maintained its survival in the world by providing school boys a chance to "fit in" and drug dealers a source of income. Not only is it easy to grow, its easy to smoke too.


Potato Fields
-Charles Rondeau, Publicdomainpictures.net

Control. The potato species will live on forever as it has evolved its way into the staple diet of a human being. Being high-yielding, easy-to-plant and delicious, the potato enjoys the benefits of being considered the prime food source of the world's dominant specie. 

Monday, April 21, 2014

The Great Steppes, Part II

STILL IN CHARACTER


A wise man once asked our people what would happen if the great steppes in which we live in gets struck by a severe disaster. We responded that the Mongolian people were able to conquer the Chinese Dynasty Empires,we were not afraid of some petty natural disasters...Unless when we're talking about zuds, or better known as blizzards.

The Mongolian people are nomadic herdsman, we rely on cattle, goats and sheeps to provide us with food, clothing and shelter. A village's strength is determined upon the health and numbers of its cattle. A zud is basically a severe and extremely harsh winter, with a few different types of zud that could each wreck serious havoc on the ecosystem of the steppes.

During heavy snowfall, the pastures get covered with snow and grazing animals are unable to reach the food source, and will starve to death. On more extreme temperature levels, the terrain gets covered in a sheet of ice from the blizzards and cattle is unable to go uphill to find possible food sources.It is also possible that the ice formed will be so hard that it shields animals from eating.There has also been cases of an extremely cold, but dry winter, which is the most dangerous as humidity level rises and grass will simply perish. When we are unfortunate enough to have zud occur during the mating season of our cattle, a tribe could possible face a decimation of their entire herd, as new-borns will die immediately from the cold and lack of food.

Small animals such as rodents, rabbits and snakes are able to hibernate through the winter, and are thus unaffected by harsh winters.

Overall, the biome of the steppes will change from a cool, desolate grassland into a stormy and frozen wasteland.

Thursday, April 17, 2014

The Biome of the Great Steppes

Journals of a Mongolian Scout
(Translated from Uyghur script by Sean Yang)

Year 1216

Introduction

My lord, Temujin, has changed his name to Genghis Khan. The first Khan of mongolia, the first king to unite the plains of our great steppe under the banner of the Mongol Empire. and create the ruthless Mongolian horde.Under the pretense of "finding greener pastures for our herd" we have pillaged and quite literally swept across the entire Eurasia. Our cavalry have ridden as far as the steppe can go, and our arrows have plunged into skulls of all races.

On my latest excursion versus the Kara-Kitan Khanate,a enemy archer maimed my beloved horse in the leg, I subsequently fell off and injured my leg. Usually, the Mongolian Horde leaves the stragglers and the unfit behind for the mountain lions, but I was one of the few men that could read and write. Therefore, I am tasked by my great majesty to record the environment and note down everything about the steppe's climate and biome. A menial and trivial task for a man of my stature and martial prowess, but the Khan's wish is my command. Plus he is too busy planning the next raid and keeping his eight wives in check.

A painting of the supreme Khan, his beard is a lot longer now and looks better than that of Mr. Quick.


The Terrain and Climate

Our great steppe is known to the men we conquer as a temperate grassland. Ones who refuse to call it a steppe has already been buried alive. In the steppe, all we have is grass, a all important resource to feed our sheep herd.The Mongolians are a nomadic people, our land is too dry for crops and our herd needs more grass as food. During the time of our great Khan uniting Mongolia, clans would fight each other over petty acres of grass covered land. Now the Mongolian horde has conquered more grasslands than our herd will ever need! Travelers from other parts of the world have told me of steppes with different temperatures and rainfall, and even different types of grass. Perhaps one day our great Khan will conquer all of the steppes in the world. But in our Mongolian steppes, the air is dry and humid. During the summer, our sun can reach blistering temperatures of 104 F, and the gods show their discontent through frequent thunderstorms and fires which could devastate our herd's food source. We barely receive any rain during the dry seasons, and over the entire year, I have observed in a unused wash basin at home that the steppes have no more than 30 inches of rainfall a year. When our horde swept across the plains of Eurasia easily slaughtering all enemies in our way, I have noticed that the grass is lusher when we are closer to areas with trees, and little in number when close to the desert of our middle-eastern adversaries. Much to our rejoice, the great steppes have no trees! This allows our cavalry archers a clear line of shot against helpless villagers fearing for their life. The winters mark a period of intense hardship for us soldiers. With no trees, the winds howl with the sound of a dying fox and so strong that it blew our tents apart. Our coldest times were marked to be -40 F, and there has been days where our tents would collapse from the weight of the snow overnight. Our life on the steppes is hard, we dig deep into the ground for our water and our men learn to fight without rations for several days. But the Mongolians are a strong and tough empire, and our ecosystem has only made us fearless in the face of our enemies. Sometimes, when the enemy enters our steppes, they note down the giant mountains of skulls that is also part of our natural landscape.

Our strategist have devised a temperature graph over a year so that our troops can better prepare for the upcoming weathers.

The rainfall of our steppes vary in different times, we tend to cure our meat and stockpile food when the low rainfall times come since our herd may not find grass.

A painting of our steppes by our artist, notice how we have no clouds, which is why we freeze during the winter.



The Plants

The harsh climates of the steppes stops our grasses from growing too long, but after our horde has charged through vast plains of steppes we have never though existed, I have recorded down many types of different grass found in our conquered lands. We have the fringed sagebrush, milk vetch, sweet vernal, rhubarb and even tumbleweeds. Unfortunately, due to our rainfall, our grass never grows only longer than 1 and a half inch.

Milk Vetch



Fringed Sagebrush


Tumbleweeds!

Animals

The only wild life of great concern to our people are the horses. My own horse was caught by myself when I was at the age of 6. I jumped onto the toughest mustang I have ever seen near our village and managed to subdue it without getting flung off. Antelopes are also common, and they graze our precious grass which we need for our herd, so we hunt and kill them whenever we find one. There are also numerous types of burrowing animals digging deep into our soil, rabbits, squirrels and ferrets are all eaten whenever they are caught.Finally, the most dangerous animal which lives in our plains is the rare lynx cat. There was a tale of a lynx pummeling an entire group of adventurous young boys. Our great leader Genghis Khan keeps one as his pet. The falcons and eagles soar high up in the sky, and are used as target practice for the most skilled of archers. There are many more small lizards and insects, and mainly serve as food for the birds.


The lynx


The iconic Saiga Antelope


My son had one of these as his pet, our family ate it during the winter when we were out of food.

The Food Chain

The grass serves as the primary producer for all life in our steppes.




We have forgotten to put "enemy villagers" as a primary food source for our soldiers.

The plants in the steppes have deeper and stronger roots to protect against the wind and to find water easier. The plants are much like those of the desert. The symbiotic relationship of our steppe biome is parasitism. When one species becomes weak, the other becomes more powerful and dominant.


Websites Visited (Pictures too)

The foodwebb, 
http://ecoplexity.org/model_collection

Biogeographical Process,
http://clasfaculty.ucdenver.edu/callen/1202/Landscapes/Biogeog/Biogeog.html

Climate/Temperature of Biomes, 
http://earthobservatory.nasa.gov/Experiments/Biome/graphs.php#grassland

The Steppe Biome
http://www.blueplanetbiomes.org/steppe_plant_page.htm



Monday, April 14, 2014

Animal Behavior Lab (Pill Bugs)

Animal Behavior Lab Done with Pill Bugs (Rollie Pollies)


Abstract:

To order to gain a better understanding of animal behavior, we have conducted a lab in our biology class using pill bugs. To observe how pill bugs reacts to different environments, my partner and I did experiments involving pill bugs' preference to moisture, scent and terrain. In each experiment we used 10 pill bugs placed in a behavior chamber covered with filter paper. The behavior chamber is divided into two areas with different properties. For our first experiment (moisture), we drenched one filter paper with water and left the other dry, and after recording the pill bugs' movement for 7 minutes at 30 second intervals, we observed that the pill bugs prefered the wet environment. Our second experiment was conducted in the same way except instead of water we drenched the filter paper with honey. Our results did not show pill bug's reaction to honey/sugar. For our final experiment we put large beads simulating a rocky environment in one chamber while the other remained dry filter paper, we saw a large movement of pill bugs from the paper to the beads, thus demonstrating a preference for rocky terrain of pill bugs.

Background:

Animal behavior (ethology) is the way in which something acts or reacts by itself or to other beings. In ethology, questions regarding behavior is categorized into 2 types, proximate questions and ultimate questions. For example, when we study a bird singing, a proximate question would be "How did the bird tell when it's time to sing?" and a ultimate question would be "Why does the bird sing?" A fixed action pattern is a natural, innate behavior in a animal that does not change and not taught by others. For example, when a angry biology teacher smacks a disruptive student in the arm, the student instinctively and naturally cries out in pain and defiance (maybe not the latter in some countries); the reaction is innate since no one has explicitly taught the student to cry in pain when hit. Imprint is a type of behavior that is a combination of both innate and learned, it constitutes to an animal's response to a certain stimulus. In young geese for example, the ducklings will imprint on the behavior and characteristics of its surroundings, no matter the species. This can cause bizarre cases of young geese imprinting on humans or other non-predatory species. A proximate explanation could be that young geese are born incredibly clueless and need something to imitate, while a ultimate explanation could be that young geese lacks the intelligence to develop and learn basic behaviors on its own. In ethology, the response to a stimuli can also be categorized into kinesis and taxis. Kinesis is when animals respond randomly to a stimuli while taxis is specifically. For example, when pill bugs realize they are in a unsuitable environment, they will randomly move around until they find a better environment, for taxis, when the light were just turned on in a dark surrounding, insects and moths will immediately flock to it, it doesn't randomly find a place with light. Another distinction of animal reaction is classical and operant conditioning. Classical conditional is a involuntary/uncontrolled response to a external stimuli, such as a biology student screaming in pain as a teacher hits him. A operant response is a voluntary response in order to gain something, such as a student quickly wakes up when the teacher talks about the upcoming test, in order to achieve a passing grade.

Hypothesis:

Independent variable: Honey, water and beads
Dependent variable: Amount of pill bugs in each chamber

Moisture Lab:

If the pill bug prefers wet environments to dry environments, then pill bugs should undergo kinesis in the behavior chambers until they reach the other moist chamber, to which they should stay.

Honey Lab:

If the pill bug can detect scent, then pill bugs should undergo kinesis in the behavior chambers until they reach the honey covered chamber because bugs like sugar.

Terrain Lab:

If the pill bug hold preference over terrain, then pill bugs should undergo kinesis in the behavior chambers until they reach the bead covered chamber because they should be able to detect the terrain through sense of touch.

Materials:

10 pill bugs
1 behavior chamber
6 pieces of filter paper (for all 3 parts)
Brushes for moving bugs
Timer/clock
5 ml water
5 ml honey
30 small beads

Procedure:

Place 10 pill bugs into a behavior chamber covered with 2 pieces of filter paper, always leave one of the filter papers dry and untainted (control). The other piece of filter paper should be covered with water, honey or beads depending on the lab. Start the timer and cover the behavior chamber so light does not shine on the bugs. Every 30 seconds lift the cover and record down the amount of pill bugs in each side of  the chamber, continue on for 7 minutes with each lab.


Results:


Moisture lab:

Time (minutes) # in Dry Chamber # in moist chamber
0 2 8
0.5 2 8
1 2 8
1.5 2 8
2 1 9
2.5 1 9
3 0 10
3.5 0 10
4 0 10
4.5 0 10
5 0 10
5.5 0 10
6 0 10
6.5 0 10
7 0 10



Our results correlate with our hypothesis, showing that pill bugs do indeed prefer wet environments over dry environments.


Honey Lab

Time (minutes) # in dry chamber # in honey chamber
0 2 8
0.5 2 8
1 2 8
1.5 2 8
2 3 7
2.5 3 7
3 3 7
3.5 2 8
4 3 7
4.5 2 8
5 1 9
5.5 3 7
6 4 6
6.5 4 6
7 3 7



My partner and I's hypothesis wasn't entirely correct, we believe that the pill bugs had no reaction to the presence of sugar around him as the data shows the pill bugs movement as random and erratic.


Terrain Lab

Time (minutes) # in dry chamber # in bead chamber
0 0 10
0.5 1 9
1 3 7
1.5 5 5
2 6 4
2.5 5 5
3 7 3
3.5 6 4
4 7 3
4.5 9 1
5 10 0
5.5 9 1
6 10 0
6.5 8 2
7 9 1

















Our lab results showed a great movement of pill bugs from the dry flat surface to the rocky bead covered chamber, this shows that pill bugs have a strong preference for uneven terrain as they quickly settled when they reached the beads,


Conclusion

Our results for our experiment showed that pill bugs preferred wet, uneven environments, and has no affinity to sugar or scent due to the amount of pill bugs staying dormant in their preferred environments, or undergoing kinesis in attempt to find a suitable environment. Possible error analysis in this experiment could be the amount of pill bugs present is not enough to provide reliable data, or the amount of time the pill bugs are left in their chambers isn't enough for them to demonstrate their behavior.

Works Cited

Emily Leck, "Chapter 51: Study Questions - Behavioral Ecology." Quizlet.com