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The report concluded that global warming of 2 °C (3.6 °F) over the preindustrial levels would threaten an estimated 5% of all the Earth's species with extinction even in the absence of the other four factors, while if the warming reached 4.3 °C (7.7 °F), 16% of the Earth's species would be threatened with extinction.
A 2018 study published in Science found that global orca populations are poised to dramatically decline due such toxic pollution. [ 162 ] [ 163 ] In the Pacific Northwest , wild salmon stocks, a main resident food source, have declined dramatically in recent years. [ 3 ]
Drone footage from a 2019 research survey shows a young male orca known as A99 “Alder" with a dead salmon on his head. A recent sighting of another salmon-wearing orca also sparked excitement.
The 2007 IPCC Fourth Assessment Report concluded that over the last three decades human-induced warming had likely had an influence on many biological systems. [25] [26] [27] The Sixth Assessment Report found that half of all species with long-term data had shifted their ranges poleward (or upward for mountain species).
The Salish Sea orcas have become an iconic natural treasure of the region and a symbol of the area's ecological productivity. Many whale watching organizations throughout the region target the orcas, including resident and transient groups, and often work with nonprofit organizations like the Center for Whale Research and The Whale Museum to ...
Killer whales play an important role in our ocean's ecosystem. Female orcas can live up to 90 years, and male orcas live up to 60 years. Whales can communicate through sounds ranging from clicks ...
An endangered orca vanished from a dwindling whale pod off the Washington coast, a conservation group said. The missing Southern Resident killer whale, K-26, was not seen by researchers during an ...
When the giant flightless birds called moa were overexploited to the point of extinction, [5] the giant Haast's eagle that preyed on them also became extinct. [6]The concern about overexploitation, while relatively recent in the annals of modern environmental awareness, traces back to ancient practices embedded in human history.