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USA-SC-GREENVILLE Azienda Directories
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Azienda News:
- Thresholds of temperature change for mass extinctions
Five large-magnitude mass extinctions (the “Big Five”) have occurred during the past 450 million years (Myr) 1, where the estimated extinction of marine animals for each event was over 75% at
- Biodiversity loss poses a fundamental risk to the global . . .
The destruction to which Gueterres refers spans the globe and is happening on a massive scale According to a UN Global Land Outlook assessment, more than 1 million species are now threatened with extinction, vanishing at a rate not seen in 10 million years As much as 40% of Earth's land surfaces are considered degraded
- Global impact and selectivity of the Cretaceous-Paleogene . . .
Net diversification rates [(B), (E), and (H)] become strongly negative during the K-Pg event, reaching 1 95 extinction events per lineage per million years for all elasmobranchs (Table 1, details) The number of species through time [(C), (F), and (I)] quickly drops at the K-Pg boundary, particularly for rays and skates, and we did not find
- Accelerated modern human-induced species losses: Entering the . . .
The oft-repeated claim that Earth's biota is entering a sixth "mass extinction" depends on clearly demonstrating that current extinction rates are far above the "background" rates prevailing between the five previous mass extinctions Earlier estimates of extinction rates have been criticized for us …
- The Chicxulub Asteroid Impact and Mass Extinction at the . . .
A number of major animal groups disappeared across the boundary (e g , the nonavian dinosaurs, marine and flying reptiles, ammonites, and rudists) , and several other major groups suffered considerable, but not complete, species-level extinction (e g , planktic foraminifera, calcareous nannofossils, land plants) (12, 13, 37, 49)
- Mass Extinctions and Their Relationship With Atmospheric . . .
Knowing the number of genera and species on Earth, the cost in lost biodiversity of this ongoing Sixth Extinction can be calculated in the most graphic of terms, the number of species that disappear each day Toward this end, it has been estimated that Earth harbors 100,000 genera and 8 7 million (±1 3 million) species (Mora et al , 2011)
- IUCN Red List of Threatened Species
The IUCN Red List of Threatened Species™ is the world’s most comprehensive information source on the global extinction risk status of animal, fungus and plant species Open to all, it is used by governmental bodies, non-profit organisations, businesses and individuals
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