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- Educator Vertebrate Declines - BioInteractive
mammals), whereas the bottom panels represent only bird species BACKGROUND INFORMATION Extinctions are a regular occurrence over the course of geologic time But catastrophic events in which many species go extinct over brief periods of time are rare When our planet loses more than 70% of its species within a
- The Top 5 Threats to Bird Populations - Science of Birds
There are about 10,000 bird species in the world Some authorities put the number at more like 11,000 In any case, the number is in that ballpark, and this means birds are an incredibly diverse group of animals But current research tells us that worldwide 40% of these species are in decline The populations of almost 4,000 bird species are
- Archeology and the Anthropocene - ScienceDirect
In a landmark paper published in the journal Science near the turn of the 21st century, “Human Domination of Earth's Ecosystems,” Vitousek et al (1997) conducted a meta-analysis and found that humans had reached a historical watershed in transforming our planet—atmospherically, hydrologically, pedologically, geochemically, biologically, ecologically, and more (Fig 1)
- Journey to 8,000 Birds: Seven Continents, 90 Countries and . . .
According to the International Ornithological Committee, 10,770 species of birds populate our planet This is a changing count as DNA research changes how we classify birds, new species are discovered and extinction takes its toll No one has seen them all
- Half of Species That Migrate Are in Decline, UN Says
The first-ever State of the World’s Migratory Species report was launched today by the Convention on the Conservation of Migratory Species of Wild Animals (CMS), a UN biodiversity treaty, at the opening of a major UN wildlife conservation conference
- 28 Facts About Biodiversity - TRVST
The Earth is home to different species and communities of species Biodiversity is unique in all parts of the Earth As the environmental conditions change from what millions of species adapted to, many are under the threat of extinction Every species is valuable and in need of protection These 26 biodiversity facts point out interesting aspects of our Earth’s biosystem alongside the
- Accelerated modern human–induced species losses . . . - Science
The loss of biodiversity is one of the most critical current environmental problems, threatening valuable ecosystem services and human well-being (1–7) A growing body of evidence indicates that current species extinction rates are higher than the pre-human background rate (8–15), with hundreds of anthropogenic vertebrate extinctions documented in prehistoric and historic times (16–23)
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