Match each term to its description. Community Diversity Species Evenness Species Richness Takes into account both the n The relative abundance of spe The number of species in a co
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- PoN Background Information: In 1970 the deer population of an island forest reserve about 518 square kilometers in size was about 2000 animals. Although the island had excellent vegetation for feeding, the food supply obviously had limits. Thus, the forest management personnel feared that overgrazing might lead to mass starvation. Since the area was too remote for hunters, the wildlife service decided to bring in natural predators to control the deer population. It was hoped that natural predation would keep the deer population from becoming too large and als increase the deer quality (or health), as predators often eliminate the weaker members of the herd. In 1971, ten wolves were flown into the island. The results of this program are shown in the following graph (below). Deer and Wolf Population Size 2500 2400 30 -28 2300 -26 24 2200 +22 whlf -20 2100 18 -16 2000 14 deer -12 1900 -10 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 Describe what happened to the deer and wolf…Give your response to the following statement: “Eventually, all species become extinct. So it does not reallymatter that the world’s remaining tiger species or atropical forest plant are endangered mostly because ofhuman activities.” Be honest about your reaction, andgive arguments to support your position.Your textbook uses this graph as evidence for human hunting driving early exctinctions. Highlight this evidence by interpreting the important information on the graph. Start by accurately describing the way the graph looks, then identifying and describing important numbers and trends. When discussing numbers and trends, use the units and information found on the x and y axis. Finish with a conclusion. What does it tell us about prey switching and impacts of predation on biodiversity? Partridges and other small birds Hares and other small mammals Tortoises and shellfish
- Upland game hunters in Illinois have been noticing a decrease in therabbit and pheasant populations over the past five years. They havelobbied the Department of Natural Resources and the statelegislature to allow them to shoot red-tailed hawks, one of therabbit’s and pheasant’s main predators. Explain why shooting hawkswill not ultimately solve the problem of a decreased rabbit andpheasant populationWhat factors might be preventing the sea otter population from increasing to its historical levels. (Simple sentence)The Atlantic cod population is of primary economic importance to fishingcommunities throughout the maritime provinces in Canada. Unfortunately, thispopulation has underwent an extreme collapse in recent years due to overfishing.Some argue, however, that the collapse of the cod population may actually beattributed to an increase in the population of harp seals, a known predator ofcod. One suggestion to help cod stocks recover is therefore to permit the huntingof harp seals on a large scale. Suggest and explain one potentially negativeconsequence of limiting the harp seal population.
- Part A: A population of 100 Asian elephants exhibits logistic growth. If the carrying capacity is 500 elephants and theper capita growth rate is 0.1 individuals/(individuals × year), what is the maximum population growth rate forthe population? part b: Based on the above question, what is the maximum population growth rate for the population if we assumedthe elephants were undergoing exponential growth?Explain how the three major types of deserts differin their climate and vegetation. Why are desert ecosystems vulnerable to long-term damage? How dodesert plants and animals survive? Explain how thethree major types of grasslands differ in their climateand vegetation. What is a savanna? Explain howsavanna animals survive seasonal variations in rainfall (Core Case Study). Why is the elephant an important component of the African savanna? DescribeTuy Sereivathana’s efforts to prevent elephants frombecoming extinct in Cambodia. Why have manyof the world’s temperate grasslands disappeared?Describe Arctic tundra and define permafrost?Explain how the three major types of forests differin their climate and vegetation. Why is biodiversityso high in tropical rain forests? Why do most soils intropical rain forests hold few plant nutrients. Whydo temperate deciduous forests typically have a thicklayer of decaying litter? What are coastal coniferousor temperate rain forests? How do most species…Lake Winnipeg is a shallow lake composed of two basins: a wide north basin and a narrow southbasin that provides a habitat for over 50 different species of fish. Each of the statements belowinvolves a situation that will affect the growth of a population. Classify each of the statements asDD (density dependent) or DI (density independent) and give a reason for your choice.1. Rainbow smelt and yellow perch attempt to occupy the same area. The more aggressive smeltsurvive; the perch do not. __________________________________________________2. A severe flood brings a lot of sediment and silt into Lake Winnipeg. The turbidity of the lakeincreases greatly. ________________________________________________________3. Since northern pike prey on yellow perch, an increase in the perch population causes anincrease in the pike population. _______________________________________________4. Many fish die due to an increase in water…
- Explain the effects on the ecosystem if Wood rat were removed. Provide both positive (if any) and negative impacts on the ecosystem. Be sure and include as many of the following terms in your writing as possible: autotroph, heterotroph, producer, primary consumer, secondary consumer, tertiary consumer, carnivore, omnivore, herbivore, energy, population, increase, and decrease.O Villay Use the passage to answer the question. Mule Deer A) In a short paragraph, propose a hypothesis to test the effect of a zoned reserve on mule deer populations. Justify your hypothesis based on your This image shows a male mule deer (Odocoileus hemionus), which is native to western North America. Named for their large ears, mule knowledge of zoned reserves. deer are hunted for sport and food under strict management B) In 1-2 short paragraphs, outline a field experiment to test your hypothesis on the effect of a zoned reserve on mule deer populations. Describe your control group, experimental group, and the data you would collect. Identify at least two environmental factors that could affect your data collection and practices, such as designated hunting seasons and limits on how many deer a hunter can take. Imagine a scenario where the local mule deer population has declined after a harsh winter. Wildlife management agencies have how you would address them, if possible. proposed…There is a non-harmful species of fly that has a body coloration pattern that is similar to bees and wasps, the latter two of which have a stinger for self defence, while the fly has no stinger. For the fly's colour patterns to help it trick potential predators and therefore avoid being eaten by predators, how common should the fly be in nature relative to the bees and wasps in an area where all these species overlap? Question 1 options: 50% of the total abundance of these groups Rare The abundance of bees and wasps doesn't matter Very common