The ecology lab did a mark-recapture study on grasshoppers in a field at Possum Creek MetroPark. They caught and marked 52 individuals. The next week, they caught 92 individuals, 11 of which had been previously marked. Which of the following is the best estimate of crayfish population size in the stretch of stream
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- Exam the graphing show the abundance index of 3 species in this system. Which of the following is true? OTTER O when kelp abundance is high urchin and otter abundace is also high when otter abundance is low kelp abundance is high URCHIN O when urchin abundance is low kelp and otter abundace is also low KELP 1930 1940 1950 1960 1970 1980 1990 2000 2010 2016 O when urchin abundance is high kelp Year and otter abundace is low INCLUDES HISTORICAL DATA Abundance IndexYou've been out in the field collecting data on the predation of holly leaves. You collect 200 leaves in total of which 100 leaves contain one mine, 20 leaves contain 2 mines and 30 leaves contain 3 mines. After close examination with your hand lens and dissecting microscope you categorize a total of 15 mines with round holes, 9 mines that were torn open and 27 mines with an irregular hole. After some basic analyses you conclude that the predation rates by blue tits and wasps are: A. 3.7% and 6.5% B. 6% and 10% C. 10% and 6% D. 4% and 6.5%You want to estimate the population size of pink salmon in the upper pitt river and use a mark-recapture technique to do so. You mark 1313 individuals as they pass under the port mann bridge. two weeks later you recapture 2245 individuals in pitt lake of which 204 have marks on them. What is your estimate of the population size?
- 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!Please help me answer this in 10 sentences only. In the Convention of Biological Diversity (CBD), the precautionary principle read “when there is a threat of significant reduction or loss of biological diversity, lack of full scientific uncertainty should not be used as a reason for postponing measure to minimize or avoid threat”. What is the application of this principle to straddling fish stocks and migratory fishes? Thank you very much for your helpThe mark-recapture method is used to estimate the population size of mountain yellow-legged frogs in the San Gabriel Mountains of southern California. 100 frogs are captured and marked. A week later, 50 frogs are captured, and 10 of them are marked. The total population size is
- -2- SECTION A Answer ALL. questions in this section. Write your answers in the spuces provided in this booklet. 1. Students of an ecology elass conduct a field study in an area located on the boundary between a savannah and a forest. In addition to using various sampling methods to estimate species abundance, they observe the feeding patterns of the organinms (a) (1) Describe TWO sampling methods which the students could use to estimate the abundance of plant species in the area. (i1) Describe ONE method they could use to collect data on the mobile animals which inhabit the arca (b) The students record their data in a table similar to Table 1 TABLE 1: DATA ON ORGANISMS IN THE FIELD STUDY Estimated Numbers in 100 m Species Names Feeding Behaviour Savannah grass 1000 Grasshopper 50 Eats grass and leaves Caterpillar 25 Eats leaves Poui tree Hawk Eats woodpeckers and lizards Woodpecker Eats caterpillars 15 Eats caterpillars 33 LizardI am doing an ecology research paper on Brown Anole Lizard Distribution, to perform my experiment I will choose 4 spots in a park such as a lake, a shaded tree, a boardwalk, and a sidewalk. then to quantify my results I will go three times a day for five weeks and count how many lizards I see in each area. I need help thinking of a good research question? it does not have to be long.Mark Recapture can be written as M N = R Define each term. Use this equation to answer the following question. Show your work. A biologist for Mosaic fertilizer company catches 26 Florida scrub jays as part of their monthly environmental monitoring. Each bird is given a band. The next month, they catch 32 birds. 13 of the birds have bands. What is the estimated population size of the birds in that area?
- You are trying to estimate the population size of a school of fish in the Florida Keys. The first time, you sample and mark 37 sardines. The second time around, you capture 40 sardines and 13 of them were already marked. What is the estimated population size? Show your work!Table 1: The density of dippers (Cinclus cinclus) per km of upper stream length in 18 rivers across Great Britain: the pH of stream water also shown as too their individual territory lengths (km). Data collected with the assistance of the British Trust for Ornithology in May 2001. Draw a graph showing the relationship between dipper density and stream pH. Label the axes and provide a figure legend.A population's. is the specific environment in which it lives. Select an answer and submit. For keyboard navigation, use the up/down arow keys to select an answer. geographical range b growth rate size habitat dynamics Unanswered • 2 attempts left 1 Submit Question 2 Homework • Unanswered Why do species with large body sizes typically have lower population densities? Select an answer and submit. For keyboard navigation, use the up/down arow keys to select an answer. Small organisms have more potential mates. b Genetic diversity is low. There are not enough individuals to grow the population. d. Large organisms do not like living near one another. Each large organism consumes more available resources. Unanswered • 2 attempts left Submit