Look at figure 1 in the passage. Which of the following relationships is BEST shown by the data? The more massive the penguin, the more food is delivered to the offspring. The maximum efficiency in food foraging is reached at about 20% sea ice concentration. B. The amount of food delivered is about the same at 12% and 15% sea ice concentration. The greater the sea ice concentration, the greater the efticiency in delivering food
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- Optimal foraging theory can make predictions about an animal’s food choice. Which of the following is the most accurate statement about optimal diet breadth as resource quality, handling time and distribution changes? As handling time increases, animals should specialize As the distance between resources increases, animals should generalize As the energy content of the resources increases, animals should generalize As the distance between patches increases, animals should stay longer in a patch The following diagrams show four distribution patterns of resources. Each circle represents one unit of a resource, say, a food item. For which of these distributions would the Marginal Value Theorem be useful for making predictions about optimal foraging behavior. (Shown in image)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.Use Verbal description of results from graph and then Interpret the graph for Effect of Food Density sccenario in foraging lab. The interpretations must include Were the results expected and Did they support the hypotheses? If so, state the biological significance of the results from graph. If the results deviated significantly from expected results, discuss the hypotheses onthe basis of expected results and include an explanation of why this might be so. Lastly, state the conclusions drawn from the experiment and their biological relevance. Hypothesis: higher food density corresponds to an extended duration of foraging.
- Interpret the following graphs: In the graphs, the number of days are 18.. 1 day is equal to 60 sec. For the first graph, days are taken on x-axis. The mean foraging times are taken on y-axis. For the 2nd graph, percentage of prey caught during first half of winter(1-6days) were taken on x-axis and percentage of prey caught during 2nd half of winter(7-12days) were taken on y-axis.Interpret the following graphs: In the graphs, the number of days are 18.. 1 day is equal to 60 sec. days are taken on x-axis. The mean foraging times are taken on y-axis.Great white sharks prefer marine mammals like seals but can eat a number of other prey items, including birds and fish. According to the table below, what is the critical search time for seals, above which great white sharks should choose to eat an albatross if they encounter one? Prey item: seal (energy = 60 Mcals, handling time = 5 minutes) Prey item: albatross (energy = 10 Mcals, handling time = 2 minutes)
- Sit and wait vs active foraging cost and benefit Write at least 3 cost and benefit for at leastC. Compare the two graphs below and make a claim about the relationship between the two graphs. Provide specific evidence from each of the graphs to back up your claim. Estimated Abundance of American Lobster by Year 140 -Gulf of Maine 120 -Georges Bank 100 -Southern New England 80 60 40 20 1985 1990 1995 2000 2005 2010 Year Lobster Price Per Pound in New England by Year $6.00 Abundance (Millions) 2016 2015 2013 2011 2009 2007 2005 0 1980 $3 $3.70 $4 $4.03 $4.25 $5 $5.25 $5.00 $5.25 $5.50 $5.75 $6 $6.50 $7 $8 $9Q1: What percentage of the original 10,000 Kilocalories is available to a shark that might eat the tuna in this figure? Q2: What trophic level and term would describe a predator of tuna? Q3: Give an example of a primary consumer in a terrestrial environment.
- Based ONLY on the feeding relationship in the picture, which one is the limiting factor for the insect? * Insect Mouse Owl Plant Herbivore/ Consumer Omnivore/ Carnivore/ Producer Consumer Consumer O Producer Omnivore O Carnivore HerbivoreSince 1972, Dr. Jim Estes had been studying a food chain of kelp -> urchins -> sea otters, and then in the early 1990s orcas began eating the sea otters. The data collected by Dr. Estes are shown. Panel A shows sea otter abundance around four different islands from 1972 to 1997. Panel B shows the amount of sea urchins (sea urchin biomass) in 1987 and 1997. Panel C shows the amount of kelp that sea urchins ate over a 24- hour period (grazing intensity) in 1991 and 1997. Panel D shows the number of kelp plants within a specific area (density of kelp) in 1987 and 1997. The thickness of the arrows illustrates the strength of the effect one species has on the species below it in the food web. Sea otter abundance -Amchitka L N. Adak I. Kagalaska i. L Riskal. Sea urchin biomass Grazing intensity Total kelp density 1972 1985 1989 1993 1997 Year In 1997, which species is the apex predator in the food chain? No. per 0.25 m % loss 24hr gms 0.25m Otter No. (% max. count)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