Soru

Read the following passage regarding debates in conservation ecology. Then, match each conservation perspective described in the passage to the unstated underlying assumption upon which its core argument logically depends.

The contemporary debate in conservation ecology frequently centers on the optimal strategy for restoring degraded ecosystems, with distinct paradigms emerging. Proponents of 'Pleistocene rewilding' advocate for the introduction of megafauna proxies—such as elephants or lions—to North American landscapes to replicate the ecological roles of extinct Pleistocene herbivores and carnivores. This view asserts that ecosystems are inherently self-regulating networks that, once key functional species are reintroduced, will autonomously revert to a stable, biodiverse state without ongoing human intervention. Rewilding advocates argue that current conservation efforts, which focus on preserving precarious modern baseline states, are futile because they ignore the evolutionary history of the landscape.

Conversely, proponents of active ecosystem management contend that continuous human intervention is essential to maintain biodiversity in an era defined by anthropogenic climate change and pervasive habitat fragmentation. They argue that attempting to recreate a Pleistocene baseline is dangerous, as modern flora and fauna have adapted to the absence of these megafauna over the last 10,000 years. Instead, active managers prioritize carefully calibrated interventions, such as controlled burns, targeted culling of invasive species, and artificial habitat construction. This perspective contends that there is no singular 'natural' state to return to, and that human stewardship is the only reliable mechanism to prevent total ecological collapse in highly altered environments.

A third, emerging perspective—often termed 'novel ecosystem theory'—rejects the historical baselines of both previous camps. Novel ecosystem theorists argue that conservationists should embrace entirely unprecedented assemblages of native and non-native species that have formed in heavily human-modified landscapes, such as abandoned agricultural lands. From this standpoint, attempting to eradicate established non-native species to restore a historical state is not only resource-intensive but ecologically destructive. Instead, they advocate prioritizing immediate ecosystem functions, such as rapid carbon sequestration or water filtration, over historical authenticity or native species preservation. Consequently, they view human-altered landscapes not as degraded remnants to be repaired, but as legitimate, functioning ecosystems uniquely suited to the modern epoch.