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Squid Are Taking Over The Ocean - And Not For The Reason You Might Think
ScienceAlert • • science
Key Points:
- Cephalopod populations, particularly squids, have increased globally over the past six decades, potentially due to overfishing of their predators and rising sea temperatures, though the exact causes remain unclear.
- Computer models indicate that while overfishing top predators boosts squid numbers, this does not compensate for the overall decline in predatory fish biomass, and warmer waters may actually reduce squid biomass.
- Squids’ rapid growth and short lifespans enable them to quickly exploit disturbed ecosystems, making them effective first invaders in environments altered by fishing and climate change.
- The increase in squid populations may be more related to their ability to respond to ecosystem disturbances than to direct effects of temperature or predator loss alone.
- Despite their adaptability, squids may face long-term challenges as warming seas and reduced food availability could limit their population growth in the future.
