Question

Three years ago, because of flooding at the Western Palean Wildlife Preserve, 100 lions and 100 western gazelles were moved to the East Palean Preserve, an area that is home to most of the same species that are found in the western preserve, though in larger numbers, and to the eastern gazelle, a close relative of the western gazelle.
Write a response in which you discuss one or more alternative explanations that could rival the proposed explanation and explain how your explanation(s) can plausibly account for the facts presented in the argument.

Hint:

When analyzing changes in an ecosystem, consider the broader impact of new species, including potential effects on food chains, competition, and overall habitat balance.

Answer 1

The claim that the relocation of lions and western gazelles from the Western Palean Wildlife Preserve to the East Palean Preserve is responsible for the decrease in the population of eastern gazelles overlooks several other potential explanations. First, the introduction of lions into the East Palean Preserve may have disrupted the local ecosystem in ways that go beyond the impact on the gazelle population. Lions, as apex predators, could have started preying on the eastern gazelles, which might explain their population decline.
Additionally, it is possible that the relocation of western gazelles, although in greater numbers, has led to increased competition for resources, such as food and water, between the western and eastern gazelles. If the western gazelles have adapted better to the environment or reproduce at a faster rate, they could be outcompeting the eastern gazelles, leading to their decline.
Another alternative explanation could be related to the ecological balance of the East Palean Preserve, which might have been altered by the influx of new species. The presence of the lions and western gazelles could have disrupted the habitats of other species, leading to a cascading effect on the ecosystem. This could include changes in plant life or the displacement of other herbivores that share the same grazing areas as the gazelles.
In conclusion, while the relocation of the lions and western gazelles may have had an impact, other factors, such as predation, competition, and ecosystem disruption, should be carefully considered as potential causes for the decline of the eastern gazelle population.