C = Decrease, No Effect, No effect, Increase, Increase: Show
According to Figure 2, in the presence of wolves (white bars), the proportion of time spent on rest is less, the proportion of time spent feeding on carcasses is more, and the proportion of time spent on vigilance is more than in the absence of wolves (gray bars). Although the mean proportion of time spent on travel increases in the presence of wolves, the error bars overlap, showing that the difference is not statistically significant. A = The population will be 3,845 after a year. The bison will not pose a problem until the following year, and no conservation action will need to take place: dN/dt=rmaxN((K−N)/K) should be used to determine the one-year change in population size: 0.28×3,652((4,500−3,652)/4,500)=193. Adding 193 to 3,652 projects a population of 3,845, so the population will not reach the point at which bison migration occurs. However, it will reach a level to initiate migration the following year. Climate change can affect oceanic ecosystems and their food webs. In the East China Sea (ECS), three major climactic events were considered: Sea otters living along the Pacific coast were hunted to near extinction in the nineteenth century. After being protected from hunting in the early 1900s, a remnant population of otters
near Adak Island, Alaska, recovered rapidly. Otters did not return to the environmentally similar nearby island, Alaid Island. Sea otters eat sea urchins, which eat kelp, a brown alga. Researchers surveyed both islands in 1988, to measure sea urchin biomass and kelp density. The data are presented in Table 1. Baker's yeast, Saccharomycetes cerevisiae, is the species of yeast that is commonly used in baking, brewing, and making wine. It is a single-celled organism; each
cell is capable of undergoing asexual reproduction by mitosis and sexual reproduction by meiosis, forming spores that combine with other spores. What would the population size of sika deer be one year after the carrying capacity increased to 70000 as a result of deforestation assume?What would the population size of sika deer be one year after the carrying capacity increased to 70,000 as a result of deforestation? Assume rmax does not change. The population would grow to 63,667 deer in a year, and the growth rate would decrease the following year.
Which of the following best predicts the effects of an increase in killer whale predation on sea otters on the Adak Island ecosystem?Which of the following best predicts the effects of an increase in killer whale predation on sea otters on the Adak Island ecosystem? The sea urchin population will increase and the kelp population will decrease, leading to reduced total biomass and diversity in the Adak Island ecosystem.
Which of the following most accurately explains an impact of Burmese pythons in the Everglades community in southern Florida using the data provided?Which of the following most accurately explains an impact of Burmese pythons on the Everglades community in southern Florida using the data provided? Python predation has caused a trophic cascade that changed the mosquitoes' niche.
What scientists mean when they refer to an ecological community such as that shared by the leopards and lions?Describe what scientists mean when they refer to an ecological community such as that shared by the leopards and lions. The response indicates that an ecological community refers to all of the interacting populations in a defined habitat.
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