Climate ‘presses’ and ‘pulses’ impact Magellanic penguins — a marine predator — with guidance for conservationists

Climate change will reshape ecosystems through two types of events: short-term, extreme events — or ‘pulses’ — and long-term changes, or ‘presses.’ Understanding the effects of presses and pulses is essential as conservationists and policymakers try to preserve ecosystems and safeguard biodiversity. Researchers have discovered how different presses and pulses impacted Magellanic penguins — a migratory marine predator — over nearly four decades and found that, though individual presses and pulses impacted penguins in a variety of ways, both were equally important for the future survival of the penguin population. They also found that these types of climate changes, taken together, are leading to an overall population decline at their historically largest breeding site.Climate change will reshape ecosystems through two types of events: short-term, extreme events — or ‘pulses’ — and long-term changes, or ‘presses.’ Understanding the effects of presses and pulses is essential as conservationists and policymakers try to preserve ecosystems and safeguard biodiversity. Researchers have discovered how different presses and pulses impacted Magellanic penguins — a migratory marine predator — over nearly four decades and found that, though individual presses and pulses impacted penguins in a variety of ways, both were equally important for the future survival of the penguin population. They also found that these types of climate changes, taken together, are leading to an overall population decline at their historically largest breeding site.

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