This poster by Peter Hodgson highlights the crux of BirdLife International's Albatross campaign — populations are
nearing extinction because of deaths caused when the birds accidentally eat fishing hooks left in bait or discarded after fishing trips.
The apparent
extinction of this group of pachycormids at or
near the end of the Cretaceous is also intriguing,
because it occurs shortly before the earliest records of large - bodied, ram filter - feeding chondrichthyans (rhincodontids, cetorhinids, mobulids) in the earliest Paleogene (Shimada, 2007).
In particular, many of the plant populations predicted to persist in the
near future will actually do so under local climate conditions that are already unsuitable for their long - term survival
because long live spans and clonal reproduction strategies of many high mountain plants allow them to retard
extinction.
This possible
extinction event is commonly called the «Sixth Mass Extinction,» because biodiversity crashes of similar magnitude have happened previously only five times in the 550 million years that multi-cellular life has been abundant on Earth: near the end of the Ordovician (~ 443 million years ago), Devonian (~ 359 million years ago), Permian (251 million years ago), Triassic (~ 200 million years ago), and Cretaceous (~ 66 million years ago
extinction event is commonly called the «Sixth Mass
Extinction,» because biodiversity crashes of similar magnitude have happened previously only five times in the 550 million years that multi-cellular life has been abundant on Earth: near the end of the Ordovician (~ 443 million years ago), Devonian (~ 359 million years ago), Permian (251 million years ago), Triassic (~ 200 million years ago), and Cretaceous (~ 66 million years ago
Extinction,»
because biodiversity crashes of similar magnitude have happened previously only five times in the 550 million years that multi-cellular life has been abundant on Earth:
near the end of the Ordovician (~ 443 million years ago), Devonian (~ 359 million years ago), Permian (251 million years ago), Triassic (~ 200 million years ago), and Cretaceous (~ 66 million years ago) Periods.