【微特稿·科技与新知】研究：全球逾五分之一海洋变暗

Core Insights - A study from the University of Plymouth indicates that over 21% of the world's oceans have become darker over the past 20 years, potentially impacting marine life and entire ecosystems [1][2] - The research highlights that more than 9% of the oceans have seen a reduction in light penetration by 50 meters, and 2.6% have experienced a decrease of over 100 meters [1] Group 1: Causes of Ocean Darkening - Major factors contributing to ocean darkening include changes in algae, sea surface temperature variations, and artificial lighting [2] - The study suggests that changes in ocean surface color may be linked to shifts in phytoplankton communities, leading to widespread darkening of the oceans [2] Group 2: Implications for Marine Ecosystems - The reduction in light availability may decrease the habitable area for marine animals that rely on sunlight and moonlight for survival and reproduction [2] - Increased competition for food and resources may arise as light-dependent marine animals are forced to move closer to the surface, fundamentally altering marine ecosystems [2] Group 3: Broader Environmental Impact - The findings raise concerns about potential effects on air quality, fish populations, and the global response to climate change [2]