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- Large-Scale Absence of Sharks on Reefs in the Greater . . . - PLOS
Background In recent decades, large pelagic and coastal shark populations have declined dramatically with increased fishing; however, the status of sharks in other systems such as coral reefs remains largely unassessed despite a long history of exploitation Here we explore the contemporary distribution and sighting frequency of sharks on reefs in the greater-Caribbean and assess the possible
- Wild mammals have declined by 85% since the rise of humans . . .
The most dramatic decline has happened in the last 50 years: the amount of agricultural land per person has more than halved since 1960 This was the result of increased crop yields and livestock productivity Of course, the world population also increased over that time, meaning total agricultural land use continued to grow But, there might
- (PDF) A blacktips black tip: The reliability of using dorsal . . .
A dorsal fin (CM99336) used for area and length measurements The dorsal‐fin area was measured inside the red selection The yellow line was used to measure the dorsal‐fin length
- Global distribution prediction and ecological conservation of . . .
The basking shark (Cetorhinus maximus, Gunnerus, 1765) is the second-largest fish species in the world, smaller only than whale sharks (Rhincodon typus, Smith, 1828) ) Known for its filter-feeding behavior, basking sharks primarily consume zooplankton, particularly copepods, playing a crucial role in regulating plankton populations and maintaining the balance of marine food webs (Sims,
- Global warming to reshape Australian shark and ray . . .
Global warming to reshape Australian shark and ray populations and raise extinction risk July 12, 2021 As the current century progresses, the extinction risk for sharks, rays and chimaeras* is set to rise in southern Australia with warming waters exacerbating the impact of commercial fishing, new research has found
- Population decline - Wikipedia
According to the analysis of economists Oleg Itskhoki and Maxim Mironov, Russia may lose more than 10% of men aged 20–29 as a result of losses in the war and emigration [96] In June 2024, it was estimated that approximately 2% of all Russian men between the ages of 20 and 50 may have been killed or seriously wounded in Ukraine since February
- Introducing The Global Shark Ray Census: PADI AWARE’s . . .
The Global Shark Ray Census is a new citizen science program introduced by PADI AWARE to monitor and protect shark and ray populations from the threat of extinction With one-third of all species threatened with extinction, sharks and rays are one of the most threatened groups of animals on the planet
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