FILE - A northern spotted owl sits on a branch in Point Reyes, Calif., in June 1995. Federal wildlife officials on Wednesday, Feb. 22, 2023, announced a proposal to classify one of two dwindling California spotted owl populations as endangered after a court ordered them to reassess a Trump administration decision not to protect the brown and white birds.
Most California spotted owls live on land overseen by the Bureau of Land Management and the U.S. Forest Service. The Sierra Nevada population shows declines ranging from 50% to 31% percent in some areas, the agency said. Augustine said he planned to use the 60-day public comment period to push for more protections for the California spotted population in the Sierra Nevada.
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Long-Term Effects of the Cleaner Fish Labroides dimidiatus on Coral Reef Fish CommunitiesCleaning behaviour is deemed a mutualism, however the benefit of cleaning interactions to client individuals is unknown. Furthermore, mechanisms that may shift fish community structure in the presence of cleaning organisms are unclear. Here we show that on patch reefs (61–285 m2) which had all cleaner wrasse Labroides dimidiatus (Labridae) experimentally removed (1–5 adults reef−1) and which were then maintained cleaner-fish free over 8.5 years, individuals of two site-attached (resident) client damselfishes (Pomacentridae) were smaller compared to those on control reefs. Furthermore, resident fishes were 37% less abundant and 23% less species rich per reef, compared to control reefs. Such changes in site-attached fish may reflect lower fish growth rates and/or survivorship. Additionally, juveniles of visitors (fish likely to move between reefs) were 65% less abundant on removal reefs suggesting cleaners may also affect recruitment. This may, in part, explain the 23% lower abundance and 33% lower species richness of visitor fishes, and 66% lower abundance of visitor herbivores (Acanthuridae) on removal reefs that we also observed. This is the first study to demonstrate a benefit of cleaning behaviour to client individuals, in the form of increased size, and to elucidate potential mechanisms leading to community-wide effects on the fish population. Many of the fish groups affected may also indirectly affect other reef organisms, thus further impacting the reef community. The large-scale effect of the presence of the relatively small and uncommon fish, Labroides dimidiadus, on other fishes is unparalleled on coral reefs. Cambridge_Uni Dam Selfish Cambridge_Uni 珊瑚の白化を経て、オニヒトデなんかはどうしてるんでしょうね😂
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Federal agency proposes California spotted owl protectionFederal wildlife officials are proposing classifying one of two dwindling California spotted owl populations as endangered
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Federal agency proposes California spotted owl protectionFederal wildlife officials are proposing classifying one of two dwindling California spotted owl populations as endangered.
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Federal Agency Proposes California Spotted Owl ProtectionFederal wildlife officials are proposing classifying one of two dwindling California spotted owl populations as endangered.
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Federal agency proposes California spotted owl protectionThe decision by the U.S. Fish and Wildlife Service comes after a lawsuit by multiple conservation groups required the government to reassess a Trump administration decision not to protect the brown and white birds.
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Southern California braces for first blizzard warning in LA area since 1989: California weather updatesA winter storm Thursday primed the Los Angeles area for a historic Friday: its first blizzard warning in decades, the National Weather Service said. Oh this happened in 1989 also? But muh climate change Wow, 34 years ago. Skid Row was huddling for warmth last night. 🤣
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