Premium Essay

Isle Royale

In: Science

Submitted By Equihua
Words 1431
Pages 6

Pre-Lab Questions

1. Where is Isle Royale and how did the moose and elk get to the island?

The Isle Royale is 15 miles off of the northern shore of Lake Superior, just south of the border between Canada and the USA.

2. Why is an island an ideal setting for studying population dynamics?

The isolation of the island provides conditions for a unique natural experiment to study the predator-prey system. Isle Royale is large enough to support a world population, but small enough to allow scientist to keep track of all of the wolves and most the moose on the island in any given year.

3. What is carrying capacity?

Carrying capacity is the maximum, equilibrium number of organisms of a particular species that can be supported indefinitely in a given environment.

4. What types of organisms are more likely to follow an exponential growth curve (refer to week 5 textbook readings and lecture notes)?

5. What types of organisms are more likely to follow a logistic growth curve (refer to week 4 textbook readings and lecture notes)?

Start EcoBeaker Virtual Labs and load the “Isle Royale” lab. Just like with the Keystone Predator lab it is recommended you print out and fill in your answers on the work book, then just type the requested answers onto this assignment.

Exercise I

Make sure you follow directions carefully. Insert your workbook answers below.

5.1. What is the approximate size of the stable moose population? 720

5.2. What was the maximum size the moose population attained? 970

5. The moose population grew fastest when it was a. Smallest b. medium-sized c. largest

6. Based on your graph, what is the carrying capacity of moose on the island? 720

5. I am not requiring you to dissect the logistic growth equation. If you feel...

Similar Documents

Premium Essay

Isle Royale

...Ecology Isle Royale In this simulation, you will complete all the activities for exercises 1-5, record all your results, answer all the questions, and provide a final summary of your findings. You will not need to write a formal report. Background Isle Royale is an island sitting about 15 miles from the northern shore of Lake Superior, one of the Great Lakes on the border of Canada and the U.S. Lake Superior is the largest freshwater lake in the world, stretching 160 miles from north to south and well over 300 miles from east to west. That's a long way to swim, and not many large animals have made it from the shores of Lake Superior to Isle Royale. About 100 years ago, however, a few moose found their way across from mainland Canada to the island, probably walking most of the way across surface ice during an especially cold winter. The moose found a veritable paradise, with lots of grass, bushes, and low-lying trees to eat and no predators. Their population exploded, reaching several thousand individuals at its peak. In 1949, the area around Lake Superior had another cold winter and large parts of the lake's surface froze solid. A small pack of wolves found a tongue of ice that extended all the way to Isle Royale. There they found a population of moose that had grown so large they had eaten almost all the available food, and many of the moose were severely undernourished. These starving moose were easy prey for the wolves. The wolves and moose on Isle Royale......

Words: 2178 - Pages: 9

Premium Essay

Isle Royale

...Isle Royale Exercise 1: The Moose Arrive [5.1] - The approximate size of the stable moose population is about 640. [5.2] – The approximate maximum size the moose population attained was 850. [5.3] Right click the graph and select “Copy View to Clipboard” and paste it here. [pic] [5.4] - Give me the approximate years – The approximate years it took for the moose population to increase to the approximate maximum of 850 are approximately 8 – 24 years. [5.5] - The moose population grew fastest when: The moose population grew fastest when resources were in high abundance and it was at its largest. [5.6] Use a shape (like an arrow) to show me – The approximate carrying capacity of the moose population is 650. [6.1] – The notation “dN/dt” represents the “instantaneous change” in population size with respect to time. [6.2] – When the population size (N) is near the carrying capacity (K), K – N will be small and hence, (K-N)/K will also be small. The change in the population size through time (dN/dt) will therefore decrease and approach zero. This means that the population size stops changing as N gets closer to K. In the case when (N = K), the population is at its carrying capacity and it will no longer grow. Rewriting the right- hand side of the equation dN/dt = rmax N (K- N)/K substituting K for N is dN/dt = rmax N. The new version of the equation dN/dt = rmax N (K-N)/K when N = K. [6.3] - Fill in the......

Words: 1469 - Pages: 6

Premium Essay

Isle Royale

...Isle Royale Introduction The Wolves and Moose of Isle Royale If you were to travel on Route 61 to the farthest reaches of Minnesota and stand on the shore of Lake Superior looking east, on a clear day you would see Isle Royale. This remote, forested island sits isolated and uninhabited 15 miles off of the northern shore of Lake Superior, just south of the border between Canada and the USA. If you had been standing in a similar spot by the lake in the early 1900s, you may have witnessed a small group of hardy, pioneering moose swimming from the mainland across open water, eventually landing on the island. These fortunate moose arrived to find a veritable paradise, devoid of predators and full of grass, shrubs, and trees to eat. Over the next 30 years, the moose population exploded, reaching several thousand individuals at its peak. The moose paradise didn’t last for long, however. Lake Superior rarely freezes. In the 1940s, however, conditions were cold and calm enough for an ice bridge to form between the mainland and Isle Royale. A small pack of wolves found the bridge and made the long trek across it to the island. Once on Isle Royale, the hungry wolves found their own paradise — a huge population of moose. The moose had eaten most of the available plant food, and many of them were severely undernourished. These slow-moving, starving moose were easy prey for wolves. The Isle Royale Natural Experiment The study of moose and wolves on Isle Royale began in 1958......

Words: 1444 - Pages: 6

Premium Essay

Isles Royale

...Academic Argument: Draft Tishola Fuller Writ120-Q1WW Professor Seddon 11/24/13 Academic Argument: Draft Children should never be tried as adults in any court of law. It has been a large and heated debate about if adolescents should be able to be tried as an adult for adult crimes. One side of this argument is that if a teenager commits an adult crime, they should be sentenced reflecting the crime and not the age. Whereas others believe that if a child does not have the same legal rights and responsibilities as adults, they should not be held to adult standards in this case either. In this paper I will explain the disadvantages and inhumanity of this injustice toward our future by using facts, statics, and blogs. In the 18th century, children as young as seven could be tried as adults, in criminal courts, in America. These children were jailed with adults because the first institution designed to accommodate children wasn’t established until the year 1825. The Society for prevention of Juvenile Delinquents founded the New York House of Refuge, which prompted other states to follow their examples by building group homes and half way houses for child offenders. The first juvenile court wasn’t established until the year 1899 in Cook County, Illinois. It took until the year 1925 for 48 out of the 50 states to found juvenile courts as well. An amendment in 1980, mandated that juveniles could not be placed in adult jail, with few exemptions. But these exemptions were...

Words: 1147 - Pages: 5

Free Essay

Isle Royale

...The meaning that the book is instantly digestible because of the way that the author is really blunt with the description that get the reader to feel very uncomfortable. An example in the book that prove that is the 1492 idea that the author mention which show how much he detest the way the America is (10). Another example that the author was blunt about is the idea that he describe and draw a female private part and the undergarment that they wear (23). I found that to be really offensive and annoying that the author would be so vile. The author did not only criticize female part but also the male parts as well with exaggerating numbers. The historical events that O’Hara is the Watergate scandal which was one of the most talk about event in history. The mention of that in the reviews brings the reader back to the Vonnegut because he shows how much he hates the way that America is and interacts with other countries. Vonnegut from his book shows the reader that he hates the ideas that American spread because he calls them disease and bad chemicals. I find these passages very funny because of the way that the author explains how America is. For example Vonnegut took the example of the money and explains the design “a picture of a truncated pyramid with a radiant eye on the top of it (9). He then picked at the justice system, he drew a picture of the electric chair to show how painful and cruel the American...

Words: 263 - Pages: 2

Free Essay

Isle Royale

...My music is my life Anacleto Tavares Foundation of English 101 Gregory Ellen October 12, 2013 My music is my life I believe in music. All my life I have loved music, every note, and every rhythm. I have found that music can lift my spirits when they sink, can help me to look at the brighter side of a situation when all I see is darkness, and can find beauty in the simplest of things. When I was five years old, my parents bought me my first guitar. It was about twice the size of me. For the next two years, my fingers were covered with blisters from playing so much. “Just stick with it, and you could be the next Jeff Beck,” my dad would tell me. After a while, music became the only thing I thought about. My friends were watching Disney shows; I was watching Bob Marley and the wailers live at the rainbow in London England. Music became less of a hobby and more a part of my identity. It became a driving force for me to be the best person I could be. Because listening to, playing, and creating music was and continues to be such a large part of my life, I believe that music is more than sound. It’s a message, a lifestyle, and a place where I can escape to. The idea that an assortment of vibrations can evoke feelings and emotion is truly something magical. A melody can become something that perfectly expresses how I feel, without the need for words. As a guitar string vibrates, it moves airwaves that bounce off my ear drum and are......

Words: 582 - Pages: 3

Premium Essay

Isle Royale

...The Moose Arrive In exercise one we simulated the arrival of a small group of moose that swam to Isle Royal. The simulation ran over time so that the moose can form a large population on the island. We studied this population of moose before the wolves’ arrival. The simulation ran for 50 years. After the 50 years simulation was completed the data was collected and analyzed. Answers to Questions: 5.1 ANS: The approximate size of the moose population is 600. 5.2 ANS: The Approximate maximum population size the moose obtained was 930. 5.3 ANS: Simulated Graph: [pic] 5.4 ANS: The exponential growth is approximately from 0 years to 20 years circles in pink. 5.5 ANS: The moose population grew fastest smallest. 5.6 ANS: The carrying capacity is approximately 600. It is labeled in a red K on the graph. 6.1 dN = rmax N (K-N) dt K ANS: “dN/dt” in the equation above is a differential calculating notation that represents instantaneous change in population size (N) over time (t). 6.2 ANS: When the population size (N) approaches the carry capacity (K) and N=K then the equation is rewritten as such: dN = rmax K (K-K) dt K 6.3 ANS: Therefore when (N=K) then dN/dt = 0. When dN/dt = 0 then the population stops growing at its maxima per capita rate and stops growing. 7.1 ANS: [pic][pic] Workbook Graph Simulated Graph 7.2 ANS: In the......

Words: 329 - Pages: 2

Free Essay


...Name __________________ APES Isle Royale Population Study Background: Isle Royale is a small island (45 miles long by 9 miles wide) located in Lake Superior. In roughly 1949, due to a thick ice pack on Lake Superior, timber wolves crossed the ice pack and began to live on Isle Royale. In 1958, one of the longest wolf/moose interaction studies began. Far more information can be found at: or . Isle Royale is one of the locations for the W-SR Wilderness Studies summer trip. Procedure: You will use the population data to graph the interaction between wolf populations and moose populations at Isle Royale. Put both these lines on the same graph; use a different color for wolves and moose. Make sure to note the y-axis location for each!! Data: Year Wolves Moose |1968 |22 |1042 | |1969 |17 |1268 | |1970 |18 |1295 | |1971 |20 |1439 | |1972 |23 |1493 | |1973 |24 |1435 | |1974 |31 |1467 | |1975 |41 |1355 | |1976 |44 |1282 | |1977 |34 |1143 | |1978 |40 |1001 | |1979 |43 |1028 | |1980 |50 |910 | |1981 |30 |863 | |1982 |14 ...

Words: 518 - Pages: 3

Free Essay

The Search for an Ecology Paper Topic

...The Search for an Ecology Paper Topic In the search for a paper topic that relates to Ecology, many possibilities emerged, including, of course, the popular Global Warming and Tropical Rainforest topics, but I wanted something different. Soon it was obvious there is confusion as to what Ecology really is. As our text, “Biology: A Guide to the Natural World,” points out, we should assume that many ecologists are environmentalists, but these are two very different professions. Enter “ecology” in the Google search engine, 739,000 topics related to ecology will appear! Clicking on many of these links will direct you to a Website featuring some “environmental” or “conservation” topic, not an “Ecology” topic. Many people assume that ecology and environmental conservation are one in the same and many of the Websites confirm this assumption. combines both ecological and environmental news and articles which only adds to the confusion; one would think a Website with this title would be an “official” Website featuring only factual information; not so, just as many other “official” sounding titles are not “official” websites! In fact, there are many college educated people, my son for example, with this same mind set. The confusion can be blamed on the media hype over the environmental movement. Not many years ago “go green” brought images of tractors, farm equipment, lawn mowers and the words “John Deere,” but today “go green” has a whole new meaning. It seems the word......

Words: 1219 - Pages: 5

Free Essay


...dsfIsle Royale - Essay - Belly208 - › Science * * Apr 12, 2013 - Read this essay on Isle Royale . Come browse our large digitalwarehouse of free sample essays. Get the knowledge you need in order to pass ... Isle Royale - › Science * Oct 4, 2013 - Read this essay on Isle Royale . Come browse our large digitalwarehouse of free sample essays. Get the knowledge you need in order to pass ... Isle Royale - Essays - Equihua - › Science * * Nov 5, 2013 - Read this essay on Isle Royale . Come browse our large digitalwarehouse of free sample essays. Get the knowledge you need in order to pass ... Isle Royale Free Essays - * Free Essays on Isle Royale for students. Use our papers to help you with yours 1 - 20. Eco Beaker Lab 1 - › Science * * Apr 22, 2013 - Eco Beaker Lab 1. Exercise 1: The Moose Arrive In exercise one we simulated the arrival of a small group of moose that swam to Isle Royal. Asdasd - › People * Nov 21, 2014 - Read this essay on Asdasd . ... Only at ... ______ Lesson 13, Step 3A: Ecobeaker: Isle Royale (in BLC) Lesson 13,  ... Moose - Essays - Hotgrandma -......

Words: 289 - Pages: 2

Premium Essay


...worksheets, as proof of your lab completion If your Lab Card indicates that you have not completed the required Labs for this Lesson and you believe that you have, it is up to you to provide proof that you have indeed completed the Labs. Keep this page! __________ Lesson 13, Step 3A: Ecobeaker: Isle Royale (in BLC) Lesson 13, Step 3B: Ecobeaker: Isle Royale (in BLC) Lesson 13, Step 3C: Ecobeaker: Isle Royale (in BLC) Lesson 13, Step 3D: Ecobeaker: Isle Royale (in BLC) Lesson 13, Step 4A: Ecobeaker: Intermediate Disturbance Hypothesis (in BLC) Lesson 13, Step 4B: Ecobeaker: Intermediate Disturbance Hypothesis (in BLC) Lesson 13, Step 4C: Ecobeaker: Intermediate Disturbance Hypothesis (in BLC) __________ __________ __________ __________ __________ __________ *BLC Staff: After the student receives his/her last initial on this page, please indicate on his/her Lab Card that s/he has completed all the Lesson 13 labs. Copyright© 2011. Nan Schmidt. All rights reserved. To request permission to use materials contained in this document please send an email to Nan Schmidt at 1 Bio 182 Lesson 13 labs modified 1/23/14 Step 3: In Class Activity – Isle Royale This is the first of four different...

Words: 3068 - Pages: 13

Premium Essay

Section 3 Predator Pcb

...Section 3: Predation (part B), Herbivory, parasitism, popn. Regulation, biocontrol, fisheries, conservation biology. PREDATION… Continued (Part B) C. Studying predator effects on prey populations in the field. 1. Manipulative experiments 2. Accidental Experiments 3. Comparative Studies- woodland caribou -Food limited -Predator limited D. Optimal Foraging theory: how do predators choose their diets? (see chapter 3) *What is the optimum strategy? = Energy maximization or time minimization Max En/T Assumptions about the predator (forager): -Eating and searching for the next food (prey) item are mutually exclusive activities. -Items are found sequentially, items are found one at a time. Energetic Value of prey: EACH PREY ITEM HAS AN ENERGENTIC VALUE (ei) Handling time: A HANDLING TIME (hi) Profitability: : e/h= profitability of each prey item (such that prey can be ranked) Rule: optimal foraging rule (prediction) – always eat the most profitable prey and eat the next most profitable prey if the gain is greater than the gain from rejecting it and searching for a more profitable prey. Predictions of Optimal Foraging Theory: The highest ranked prey type should always be eaten when encountered. 1) Predators with small handling times and long search times should be GENERALISTS. 2) Diets should be broad in pre-poor (unproductivr) environments. 3) The abundance of low ranking......

Words: 2346 - Pages: 10

Free Essay

500 Extraordinary Islands

...500 extraordinary islands G R E E N L A N D Beaufort Sea Baffin Bay vi Da i tra sS t a nm De it Stra rk Hudson Bay Gulf of Alaska Vancouver Portland C A N A D A Calgary Winnipeg Newfoundland Quebec Minneapolis UNITED STATES San Francisco Los Angeles San Diego Phoenix Dallas Ottawa Montreal ChicagoDetroitToronto Boston New York OF AMERICA Philadelphia Washington DC St. Louis Atlanta New Orleans Houston Monterrey NORTH AT L A N T I C OCEAN MEXICO Guadalajara Mexico City Gulf of Mexico Miami Havana CUBA GUATEMALA HONDURAS b e a n Sea EL SALVADOR NICARAGUA Managua BAHAMAS DOMINICAN REPUBLIC JAMAICA San Juan HAITI BELIZE C a r PUERTO RICO ib TRINIDAD & Caracas N TOBAGO A COSTA RICA IA M PANAMA VENEZUELA UYANRINA H GU C U G Medellín A PAC I F I C OCEAN Galapagos Islands COLOMBIA ECUADOR Bogotá Cali S FR EN Belém Recife Lima BR A Z I L PERU La Paz Brasélia Salvador Belo Horizonte Rio de Janeiro ~ Sao Paulo BOLIVIA PARAGUAY CHILE Cordoba Santiago Pôrto Alegre URUGUAY Montevideo Buenos Aires ARGENTINA FALKLAND/MALVINAS ISLANDS South Georgia extraordinary islands 1st Edition 500 By Julie Duchaine, Holly Hughes, Alexis Lipsitz Flippin, and Sylvie Murphy Contents Chapter 1 Beachcomber Islands . . . . . . . . . . . . . . . 1 Aquatic Playgrounds 2 Island Hopping the Turks & Caicos: Barefoot Luxury 12 Life’s a Beach 14 Unvarnished & Unspoiled 21......

Words: 249855 - Pages: 1000

Free Essay

France Period

...HISTORY OF FRANCE • 13th century Spreading the weight of vaults over a series of ribs, columns, and pilasters, Gothic architecture allows the dissolution of the wall. Windows in cathedrals and churches are filled with stained glass; the shimmering colored light transfigures the vast interiors. Depicting biblical stories, scenes from the lives of the saints, or single figures, stained-glass windows complement the sculptures on the exterior and the rites and ceremonies observed within. • 1209 The Albigensian Crusade is launched by Pope Innocent III with the help of Cistercian monks. While the original spark for this war springs from papal desire to extinguish the growing problem of heresy in the region surrounding Toulouse, the political struggle between the independent southern territories and lords from northern France, joined after 1226 by Louis VIII, plays itself out in a war. In 1229, Count Raymond VII of Toulouse, who had been Louis VIII's main adversary, is compelled to cede territory to the king's control. • ca. 1210–1250 Artists at Chartres install an elaborate and extensive program of stained-glass windows in the cathedral under construction there. In addition to religious and historical subjects, the intensely colored windows depict numerous scenes of tradespeople at work, including bakers, furriers, wheelwrights, and weavers. These tradespeople were likely contributors—through hefty taxes—to the construction of the church. • 1226 Louis IX (d. 1270),......

Words: 10574 - Pages: 43

Free Essay

A Review of Management Problems Arising from Reintroductions of Large Carnivores

...A Review of Management Problems Arising From Reintroductions of Large Carnivores Date: September 2014 Abstract | Introduction | Conclusion | Acknowledgements | References | PDF Abstract Large carnivores are often apex predators and are important in ecosystems as their behaviour promotes biodiversity. They frequently fall victim to anthropogenic causes of local extinction and subsequently, have often been the subjects of conservation efforts involving reintroduction programs. As land-use changes restrict ranges and reduce prey for large carnivores, the trend towards local extinction is set to increase; therefore ex-situ conservation is likely to be increasingly prevalent. Reintroduction programmes are divided into two distinct parts. The first part is pre-release, which includes selection, breeding, and preparation of animals. The second part runs from the time the animals are ready for release through the actual release process and may include post-release monitoring and the release of further, supplementary, animals where this is necessary and feasible. This study identifies and discusses a number of potential problems involved in the use of captive animals to seed reintroductions including welfare as well as ethical and political issues. Other challenges include the genetic and behavioural integrity of founder animals and disease control, both in captivity and post release. This study also identifies a number of points for consideration during and after release,......

Words: 5197 - Pages: 21