Moose comprise more than 90% of the biomass in wolf diet. Purdue university began an ambitious 10year study of the wolf moose. The wolves and moose of isle royale are known worldwide, and they are the focus of the longestrunning study of a predatorprey system in the wild. Population ecology graph worksheet fall river public a. Isle royale national park the wolves and moose of isle royale isle royale is located in the northwest portion of lake superior. The right x axis should be in increments of 500, from. Intro to ecology the wolves and moose of isle royale are known worldwide, and they are the focus of the. These wolves are the sole predator of the moose, and moose represent 90% of. But over the past decade, their numbers have steadily declined. Moose population density in subunit 20e declined drastically.
You will use the population data to graph the interaction between wolf populations and moose populations at. Wolf moose population questions of and moose you yesterday answer can support an infinite number of moose. Both species are relatively recent arrivals to isle royale moose apparently swam to the island and established a population in the. View homework help isle royale population simulation worksheet copy from bsc 2005 at university of florida. What can we learn about predatorprey relationships from isle royale. Look back at the graph of the wolf and moose populations you created yesterday to answer the following questions. If the moose habitat is threatened, the moose population will ultimately suffer. Moose population estimates during 19592001 were based on population reconstruction from recoveries of dead moose, whereas estimates from 2002. The wolves have been subject to inbreeding and carry a spinal deformity. Wolf and moose populations on isle royale graph the following data of the wolf and moose population on isle royale.
Can the island support an infinite number of moose. Moose population estimates during 19592001 were based on population reconstruction from recoveries of dead moose, whereas estimates from 20022017 were based on aerial surveys. Park officials first observed wolves on the island in the 1940s after they crossed an. If there arent enough moose for the wolf to hunt, what do you think will happen to the wolf population. The wolves of isle royale phenomenal image hhmi biointeractive. Actual data of wolves and moose on isle royale over time. For balsam fir, growth and survival studies indicate that the species continues to decline toward extinction on the islands west half, while fir on the. The moose population tends to increase in years with mild winters, early spring greenup, abundant winter forage, low wolf numbers and low levels of tick. There they found a huge population of moose that had eaten most of the available food, and many of whom were severely undernourished. Describe the pattern between the wolf predator population in relation to the moose prey population. Moose wolf population graph answer keypdf free pdf download now.
Isle royale national park is an island archipelago a chain of islands located on lake superior in michigan. Ecology lab wolf conservation predators and prey on isle. Factors limiting moose population growth in subunit 20e. Fortier department of small animal science delaware valley college introduction isle royale national park, the largest island in lake superior. Is the rate of population growth constant or variable. In 1958, one of the longest wolf moose interaction studies began. Observations were made on the interrelations between wolf canis lupus and moose alces alces in 194981.
Response of moose hunters to predation following wolf return in. However, the following graph is a simulation of the isle royale moose and wolves populations. Wolves, moose, and the allometry of population cycles. Mortality during the past year 4 percent was exceptionally low, and a total of five pups were raised in two packs. What is the present day wolf population in minnesota. Isle royale population simulation the wolves and m. Predation on moose and caribou by a regulated wolf population. If there were no wolves on the island, what would determine the number of moose on the. The moose of isle royale displaying top 8 worksheets found for this concept some of the worksheets for this concept are isle royale predator prey cycle, isle royale lab, moose wolf population graph answer key, population community ecosystem work name, lab population ecology graphs, name limiting factors work, ecology lab wolf conservation predators and prey on. The moose population usually numbers between 700 and 1,200 moose. On isle royale, wolf and moose population sizes can directly influence one. What was the wolf population when the moose population the greatest.
The contribution to ungulate population growth generally differs between. In 1970 the deer population of an island forest reserve was about 2000 animals. This activity explores images of wolves hunting a moose on isle royale, which serve as phenomena for. Describe the pattern of the wolf predator population in relation to the moose prey population. Around 1950, and just as the moose were rebounding, wolves crossed a frozen lake. Nelson and others published the isle royale wolfmoose project. Moosewolf populations 19592009 wolves moose 1959 1969 1979 1989 1999 2009 2500 2000 1500 500 0 50 40 30 20 10 0 figure 1.
Moose would go unchecked and increase to a point and then decrease due to other limiting factors. Gray wolf biology questions and answers 1 why was the gray wolf listed as endangered. The peaks in each population tend to follow each other and not coincide. Populationecologygraphworksheet rennel 34m7em7kem46. Moose wolf populations 19592009 wolves moose 1959 1969 1979 1989 1999 2009 2500 2000 1500 500 0 50 40 30 20 10 0 figure 1. Is the island royale a stable ecosystem for the wolf and moose populations. These starving moose were easy prey for the wolves. Factors limiting moose population growth in subunit 20e alaska. If the moose population increased beyond the fir tree population. Isle royale, an island in lake superior, is the site of the longest continuous predatorprey study in the world. A balanced ecosystem is one in which the birth and death rates are roughly equal and that the population is at such a level that the ecosystem can support that number over a very long period of time. Displaying top 8 worksheets found for the moose of isle royale. The wolves of isle royale biology article for students.
Pdf on jan 1, 2012, john a vucetich and others published should isle royale wolves be. Moose population estimates during 19592001 were based on population reconstruction from recoveries of dead moose, whereas estimates from 20022017 were based on. The rapidly growing wolf population began to decrease the deer population through predation. Park officials first observed wolves on the island in the 1940s after they crossed an icebridge from canada. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Wolves became nearly extinct in the conterminous 48 states in the early part of the 20th century. In this activity, students will simulate the interactions between a predator population of gray wolves and a prey population of deer in a forest. Wolves have also instilled fear into humans for a long time.
According to the graph above the greatest population of moose was in the year 1995 with a total of 2500 moose. You will use the population data to graph the interaction between wolf populations and moose populations at isle royale. Isle royale population simulation the wolves and moose of isle royale have been studied for more than five decades. This activity explores images of wolves hunting a moose on isle royale, which serve as phenomena for learning about predatorprey population dynamics. The moose are likely to repeat the pattern from the 1930s, decimating their diet of. The isle royale wolfmoose project george wright society. Some of the worksheets for this concept are isle royale predator prey cycle, isle royale lab, moose wolf population graph answer key, population community ecosystem work name, lab population ecology graphs, name limiting factors work, ecology lab wolf conservation predators and prey on isle, isle royale.
Which statement below accurately describes the wolf and. At the same time, the islands moose population has skyrocketed. At low moose population sizes, the number of wolves tends to drop. The relationship between wolves and moose on isle royale has been the subject of the longest predatorprey research study, begun in 1958. Page 1 of 3 2 phenomenal image educator materials the wolves of isle royale how to use this resource the image for this resource, a sequence of three images showing wolves hunting moose on isle royale, an island. As the population of wolves increased between 1975 and 1980, the population of moose declined. Topdown population control is evident in the populations of both the moose and the wolves. As a result of this, the wolf population saw significant growth over the next years while the deer population steeply declined. Use dual yaxes to show the trend, since moose numbers are so much greater than wolf numbers. The winter kill rates have been calculated for each.
Ecological studies of wolves and moose on isle royale. The populations of wolves and moose on isle royale constantly adjust as food availability, weather, and seasons affect the health and reproduction of the animals. Isle royale predatorprey cycle hazleton area school. Which statement below accurately describes the wolf and moose.
Add the graph of the wolf and moose population sizes to the poster too over the past 50 years. The isle royale wolfmoose project is the longest continuous study of a. Which statement below accurately describes the wolf and moose populations over the 40 year period. The wolves and moose of isle royale michigan tech predator and prey, a delicate dance new york times fluctuating wolf and moose populations on isle royale.
As of 2018, wolves are being released at isle royale in hopes of bringing back the wolf population. Over time, notice as the wolf population declines, the moose population. Welcome to the wolves and moose of isle royale the. Both species are relatively recent arrivals to isle royale moose apparently swam to the island and established a population in the early 1900s, and wolves. Pdf investigation of tree growth in isle royale national park in michigan revealed. Studies of wolf predation patterns have accentuated the age and sex of the moose killed, other prey species, effect of snow depth and hunting success. Add this question in large print to top of the isle royale case site poster. The wolf population the wolves and moose of isle royale.
The left y axis should be in increments of 10, from zero to 50 for the wolves. Reevaluating the northeastern minnesota moose decline and. Pdf wolves, moose, and tree rings on isle royale researchgate. Eventually the wolf population will decrease because it will run out of moose to eat bonusthe moose population may also decrease if the population becomes too high for the amount of food available, as happened at isle royale in the 1990s 7. After collecting the data the students will plot the data and then extend the graph to predict the populations for several more generations. That is, a new wolf population would now have to be reestablished if wolves are to remain an ecological force on isle royale. Isle royale population simulation worksheet copy round. This research represents the longest continuous study of any predatorprey system in the world. Welcome to the official page of the isle royale wolf and moose project, based out of michigan.
Population ecology graph worksheet moose wolf population graph answer key. The moose population will decrease as there are more predators hunting it. Aug 12, 2011 for over 50 years researchers from michigan technological university have been studying the relationship between wolves and moose on isle royale, located in the middle of lake superior. A case study of trophic interactions and population change by gary m. Ecology lab wolf conservation predators and prey on isle royale. We concluded mortality from predation had a substantial additive component during the lowdensity phase and wolf predation on adult moose was less additive than grizzly bear predation. Infer the carrying capacity of wolves on the island. Identify a factor, other than moose population, that has influenced the wolf population in isle royale. After collecting the data, the students will plot the data and then extend the graph to predict the populations for several more generations.
Definitive tests of the predationlimiting hypothesis are not possible unless programs to reduce grizzly bear and wolf predation are effective. Minnesota has the largest wolf population in the continental united states. Predation or starvation loudoun county public schools. Since 1958, scientists have monitored the islands wolf and moose populations. We conducted computer simulations of different periodic sampling designs with a goal to estimate winter wolf predation on moose and caribou with acceptable accuracy and precision using no more than 45 total survey days. The isle of royale wolf and moose population is so famously studied as the wolf will only hunt for the moose and the moose only has one true predator which is the wolf.
Year wolf population deer population deer offspring predation starvation deer population change. Predatorcontrol programs targeted wolves, and wolf habitat was altered and destroyed as eastern forests were logged and then converted to farms. Wolf, moose, fir tree wolf moose and the fir tree part i. Though there was an increase in wolf resources, other factors such as disease prevented the wolf population growth. Ecological studies of wolves on isle royale figure 1. Fortier page 3 part ii trophic system data th e data in figure 1 include census information for the moose and wolf populations, ring width indices from fi rs on each end of the island, and actual evapotranspiration rates aet from april to october. This graph tells a great deal about how wolf and moose populations are. The gray wolf was added to the endangered species list in 1973. Some of the worksheets displayed are lab population ecology graphs, population ecology graph work, the pop ecology files activity 8, pop ecology files, population ecology graph work answers pdf, ecology work and answers, population community ecosystem work name, p f800gs repair manual pdfpictures to tell a story in. By 1973 the population on island had grown by almost 63% of its original population. If there were no wolves on the island, what would determine the number of moose. The wolf and moose populations are interacted with each other as they have a predatorprey relationship.
Moose population estimates during 19592001 were based on population reconstruction from recoveries of dead moose, whereas estimates from. Identify a factor, other than moose population, that may have influenced wolf populations. Ecology worksheet mine population community ecosystem. Historically, a pack of about 25 wolves has lived on the island. Modified from the wolf, the moose, and the fir tree by gary m. Population ecology yellowstone elk worksheet answer key. Over time, notice as the wolf population declines, the moose population increases and vice versa. Wolf and moose fluctuations, isle royale national park, 19592009.
What factors influence the size of the wolf and moose populations on isle royale. The population of wolf and the population of moose are independent of each other they do not affect each other. John fieberg, university of minnesota, department of fisheries, wildlife and conservation biology, st. The pattern used to describe the wolf and moose population is the boom. Calves composed 20% of the moose population but 47% of wolf killed moose examined. It would likely decrease because of the reduction of their food source. The wolf is one of several that scientists have released in isle royale national park in the past year.
Using these data, they try to understand what factors cause the moose and wolf populations. Introduction understanding population productivity and change is a major objective of population. Intro to ecology the wolves and moose of isle royale are known worldwide, and they are the focus of the longestrunning study of a predatorprey system in the wild. We examined the effect of wolf predation on hunter harvest of moose. What would happen to the wolf population if the moose population decreases. Without wolves, the alreadylarge moose population is on track to double in the next few years. Wolf and moose predator prey relationship in isle royal. What would most likely happen to the moose population if the wolf were all killed by humans. Landmark project celebrates 50 years of tracking wolves and moose on a protected archipelago in michigans lake superior. Isle royale is home to a population of wolves and moose. For over 50 years researchers from michigan technological university have been studying the relationship between wolves and moose on isle royale, located in the middle of lake superior.
The isle royale wolf population typically comprises between 18 and 27 wolves, organized into three packs. The population biology of isle royale wolves and moose. Fluctuating wolf and moose populations on isle royale. The result is that increased predation rate has no effect on prey growth rate panel a. The geographic range is the area in which a population lives. Currently, the wolf population is down to two individuals, making their local extinction likely. Moose wolves the wolf population continued to increase during the past year, from 25 to 29 wolves, and in 2000 it was higher than at any point since 1980 fig. The wolf moose project of isle royale, now in its 55th year, is the longest continuous study of any predatorprey system in.392 1384 1110 1609 1532 1006 138 86 852 680 718 1224 1174 581 889 943 762 1413 445 340 1545 140 48 1069 718 412 91 406 1195 1214 906 953