Biodiversity losses in the face of climate change are among the most important issues facing humanity today. Vertebrate extinction is at an all-time high, and losses of reptiles are no exception. The turtles are a unique vertebrate group of grave conservation concern. I compared recent declines in turtle biodiversity to the losses of Testudinata (Cryptodira + Pleurodira) and non-dinosaurian reptiles during the most recent mass extinction. Fuzzy arithmetic was used because of its suitability to deal with uncertainty in these kinds of data sets and the questions that arise with comparing geological data with those from recent times. This revealed that extinctions of turtles in modern times massively exceed losses observed at the Cretaceous–Paleogene border. Further, if turtle extinctions continued at their current level, massive losses of these charismatic animals could occur within our lifetime and loss of the entire group could occur in just a few centuries. We must ask ourselves, how much more can we lose before we also disappear.
Citation: McCallum, M. L. (2021). Turtle biodiversity losses suggest coming sixth mass extinction. Biodiversity and Conservation, 30(5), 1257-1275.
Infinity Blade: I'm not sure. Freshwater plants certainly grow from the underwater sediment upwards, but I don't know if they support the same kinds of diverse ecosystems seagrass meadows do.
Mar 25, 2022 21:40:57 GMT 5
Supercommunist: Is there a freshwater equivalent of seagrass meadows?
Mar 24, 2022 22:17:28 GMT 5
hypezephyr: IN DROWN, WATER WILL CHIMPS
May 27, 2021 22:33:21 GMT 5
kekistani: IN WATER, CHIMPS WILL DROWN.
Mar 18, 2021 11:18:01 GMT 5
roninwolf1981: I wonder why is it that the greater apes would drown if they fell into water from the trees?
Mar 16, 2021 22:25:11 GMT 5
kekistani: The virgin and bluepilled Mokele Mbembe versus the CHAD and REDPILLED Water Elephant
Mar 4, 2021 22:31:57 GMT 5
Ceratodromeus: Considering even the most terrestrially inclined extant crocodilians are also very good swimmers, i see zero reason for sebechids to not be.
Feb 25, 2021 21:09:18 GMT 5
Infinity Blade: Virtually every terrestrial animal can swim if it needs to. I don't know about tail flexibility, though.
Feb 21, 2021 22:17:14 GMT 5
jhg: Probably not. Terrestrial crocodiles stayed on land for a good reason.
Feb 21, 2021 11:17:16 GMT 5
Supercommunist: Do you think sebecids and other crocodile-like terrestrial animals were good swimmers and if so, would they have used their tails to swim or would they have been too stiff?
Feb 21, 2021 6:16:35 GMT 5
Infinity Blade: Welcome to World of Animals.
Jan 31, 2021 5:06:24 GMT 5
Supercommunist: Any idea how well pterosaurs would have fared in extremely cold climates? I can't help but assume that their wing membranes would be more vunerable to frostbite than a bird's wing.
Jan 23, 2021 9:38:14 GMT 5
Supercommunist: Turns out there is a study: www.nature.com/articles/s41598-017-08812-2 fresh bones provided 63% more energy than dry bones but what I find intresting is that dry bones that are between 3-12 months old is still a viable food source for them.
Jan 4, 2021 9:18:34 GMT 5
Infinity Blade: I think they might get calcium from the bones, but those might be harder to digest as well. For bone marrow, I'd say however long it's around before it completely decays.
Jan 4, 2021 6:23:06 GMT 5
Supercommunist: Question: I know a bearded vulture's diet consists mainly of bone marrow, but are they able to derive nutritional value from old bones or do the bones have to be relatively fresh?
Jan 4, 2021 2:59:21 GMT 5
Infinity Blade: Happy New Year mudda fuggas.
Jan 1, 2021 10:02:06 GMT 5