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  • Estimating Global Biodiversity: The Role of Cryptic Insect . . .
    We then use these estimates to project the overall number of species on Earth and their distribution among major groups Our estimates suggest that overall global biodiversity may range from 563 million to 2 2 billion species [Biodiversity; cryptic species; insects; species delimitation; species richness ]
  • Age structure changes indicate direct and indirect population . . .
    Overharvesting affects the size and growth of wildlife populations and can impact population trajectories Overharvesting can also severely alter population structure and may result in changes in spatial organisation, social dynamics and recruitment Understanding the relationship between overharvesting and population growth is therefore crucial for the recovery of exploited species The black
  • Mass extinction: Why did half of N. Americas large mammals . . .
    Dec 21, 2021 — The Late Devonian mass extinction (roughly 372 million years ago) was one of five mass extinctions in Earth's history, with roughly 75% of all species disappearing over its
  • The Biodiversity Crisis | Biology II - Lumen Learning
    Despite considerable effort, knowledge of the species that inhabit the planet is limited A recent estimate suggests that the eukaryote species for which science has names, about 1 5 million species, account for less than 20 percent of the total number of eukaryote species present on the planet (8 7 million species, by one estimate)
  • How Many Whales Are Left In the World? | Discover Magazine
    Prior to commercial whaling, the sperm whale population was likely just under two million in 1710 After the IWC issued the moratorium in 1986, the population began to rebuild In 1993, there were an estimated 736,000 sperm whales By 2022, the population had increased to more than 844,000
  • AWFs Dr. Philip Muruthi: Decoding Kenyas Rhino Success
    In total today, Kenya has 1,977 rhinos, including 1,004 eastern black rhinos, 971 southern white rhinos, and two critically endangered northern white rhinos The country's black rhino population has surpassed its national recovery target of 1,000 black rhinos, marking a remarkable 150% increase from around 400 in the 1980s according to the
  • Wildlife Fact Sheet: Sumatran Rhinoceros - Rainforest Action . . .
    Their numbers have decreased by 70% in the past 20 years and in 2015, they were declared extinct in the wild in Malaysia About me I’m the smallest of the five rhino species that exist on Earth today





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