气候变暖导致加拿大北极海域出现入侵物种藤壶

Core Insights - An international team has reported evidence of barnacle invasion in the Canadian Arctic, indicating that climate change is allowing foreign species to invade previously cold waters [1] Group 1: Research Findings - Researchers from the British Antarctic Survey and Canadian counterparts published a paper in "Global Change Biology" detailing the use of environmental DNA barcoding to identify species in water samples collected from the Canadian Arctic [1] - The genetic material of the barnacle species, Amphibalanus improvisus, was found in the water samples, which is commonly found in European and Pacific waters and can cause biofouling in ships and infrastructure [1] Group 2: Climate Change Impact - Historically, the cold waters of the Canadian Arctic prevented the migration and establishment of invasive species [1] - Climate change is rapidly warming the Arctic waters, reducing sea ice, and facilitating new shipping routes, which increases the likelihood of species invasion [1] - Warmer water temperatures enhance the survival and establishment of invasive species compared to the past [1]