9,000 AM 8,000 7,000 E 6,000 5,000 4,000 3,000 B. 2,000 A 1,000 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 2015 Estimated Beaver Colonies ----- 20-Year Linear Trend Line (2000 - 2019) Beaver Colonies
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Population Growth
R and K Selection
R and K selection are concepts in ecology used to describe traits in the fluctuation of a population or population dynamics. For example, they describe the life-association traits between parent and offspring, such as quantity or number of young ones born at a time, quality of parental care, the age to maturity, and reproductive effort.
Which point has the gatest growth rate(r)?
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- b) Figure 7 shows population growth of Proboscis monkeys over time. 2.0E carrying capacity V 1.5- Monkey populations 1.아- 0.5- Time Figure 7 i) State the type of population growth. ii) Proboscis monkeys nomally live in groups in their natural habitat. What is the dispersion pattern for this monkey population? iii) Describe what happens to Proboscis monkey population at V. 12 iv) Give one (1) possible example of density-dependent factor that affects the Proboscis monkey population.New folder New folder ogy Posttest Spring 2021 Question 32 II Pause Zoom A man treated his home with a pesticide that kills roaches. The first application of the pesticide killed 92% of the roaches. Two months later, he applied the same pesticide to his home again, but the second application killed only 65% of the roaches. What would best explain the decrease in the effectiveness of the pesticide? The pesticide is effective only against mature roaches. The pesticide caused some of the roaches to mutate and metabolize the pesticide. The pesticide lost its effectiveness over a period of time The surviving roaches were naturally resistant to the pesticide and that resistance was inherited by their offspring 02021 luminate EducationM Inc.5. Below is the survivorship growth curve- (C) a) What does the x-axis on the graph in Model 2 represent? b) Which type of organism shows a steady decline in its population at all life stages? c) Which type of organism loses most of the individuals in its population at an early life stage? d) What survivor type are humans? Percentage of organisms surviving 100 10 1 Type III Type II Time Type I
- During a 24-month period of time, a population of 5 000 prairie dogs experienced 6 500 births and 5 560 deaths. Forty-two prairie dogs left the population and 85 prairie dogs joined the population. Show all work and explanation.a) The population change of prairie dogs is a. 6 585 b. 5 602 c. 983 d. 941 b)During the 24-month time period, the growth of the prairie dog population is a. 983 prairie dogs/year b. 492 prairie dogs/year c. 291.5 prairie dogs/year d. 41.0 prairie dogs/year c) Calculate the per capita growth rate of the prairie dog population AND the per capita growth rate per year of the prairie dog population. Show all work.Data set 1 Date of peak cherry-blossom bloom, Kyoto, Japan May 1st Trend Apr 14th Apr 1st 2021 Mar 26th Mar 25th 800 1000 1200 1400 1600 1800 2020 Year Source: Yasuyuki Aono, Osaka Prefecture University The Economist Data set 2 Cherry blossoms peak bloom dates and March temperatures over time (1921-2011) 60 4/29 55 4/19 50 4/9- 45 以30 40 3/20 -Peak bloom date 35 -March temperature 3/10 30 1919 1939 1959 1979 1999 Year MAY 15 tv MacBook Air 000 000 DII DD Bloom date TemperatureData set 1 Date of peak cherry-blossom bloom, Kyoto, Japan May 1st Trend Apr 14th Apr 1st 2021 Mar 26th Mar 25th 800 1000 1200 1400 1600 1800 2020 Year Source: Yasuyuki Aono, Osaka Prefecture University The Economist Data set 2 Cherry blossoms peak bloom dates and March temperatures over time (1921-2011) 4/29 - 60 55 4/19 50 4/9- 45 3/30 - 40 3/20 Peak bloom dote 35 -March temperature 3/10 30 1919 1939 1959 1979 1999 Year Prompt- What is the effect of global warming on the blooming of cherry trees in Japan and Washington DC? Write your evidence section including the following: * Description of the change in blooming times in Japan including quantitative data (numbers) from the graph. * Description of the change in blooming times in Washington DC including quantitative data (numbers) from the graph. MAY 15 ottv MacBook Air Bloom date emperature
- During what phase of the growth curves in each diagram is the population just beginning to colonize an area? (C) a) Which type of population growth appears to continue unchecked? b) The growth curves in the Model are often referred to using the letters of the alphabet they resemble. The logistic growth curve is sometimes referred to as an S-curve. What letter would you use to describe the exponential growth curve? c) What causes the population to slow down during logistic growth? d) The maximum population an environment can sustain is affected by environmental factors that cause the population to level out or become stable. What term is used to describe this level of logistic growth? Diagram A-Exponential Growth Curve Population Numbers Exponential growth Lag phase Time Population Numbers Diagram B-Logistic Growth Curve Lag phase Time Carrying capacity (K) Pressure begins due to environmental resistanceMatch each term with its most suitable description. _____ carrying capacity a. maximum rate or increase per individual under ideal conditions _____ exponential growth b. population growth plots out as an S-shaped curve _____ biotic potential c. maximum number or individuals sustainable by the resources in a given environment _____ limiting factor d. population growth plots out as a J-shaped curve _____ logistic growth e. essential resource that restricts population growth when scarceThe table below shows the production of farmed fish in different regions of the world in tonnes). 国 1. 1984 and 1995 (values expressed as x 10 1984 1995 Asia 8 400 25 000 Europe 730 1 400 North America 334 480 Africa 30 107 Central and South America 450 500 Oceania 71 96 [Z. Shehadeh and Mr. J. Maclean, FAO Fisheries Circular - C886Rev.1 (1997). Food and Agriculture Organization of the United Nations] (a) Determine which region had the highest percentage increase in fish production between 1984 and 1995. (1) (b) Describe and explain the significance of the data in the table.
- A colony of aliens reaches planet Earth in 3000 BC and set up a base in Antarctica. If their initial population is 100 and their specific growth rate is 0.02263/year and their yieid coefficient is 0.85, then in what year (AD) will they start to outcompete humans for resources negiecting resource and logistic growth limiting effects? Assume the human population 3000 BC is 50 million, the human yield coefficient is 0.75 and the human specific growth rate is 0.02/year. Answer:Assume that the population of the greater roadrunner in the Guadelope Desert was 250 per hectare at the beginning of 1999. If the carrying capacity, K , is 750 and r=0.25 per year, what is the number ofroadrunners: (a) after a year later, (b) ten years later, (c) after a score, (d) a century later, and (e) a millennium later?Are you able to help me formulate a question regarding Keystone species? I have chosen to focus on Australian bees and the questions must cover the SHE conceptions. I want the question to be sophisticated and clear. I’ve attached a photo of the task sheet. Please give a 3-4 questions for ideas. Thanks!