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>The present concentration of co2 in the atmosphere according to Zhang, Yi Ge; et al. is the highest in 14m years. Given crabs in general have been around adapt
by javajosh 7y ago
>The present concentration of co2 in the atmosphere according to Zhang, Yi Ge; et al. is the highest in 14m years. Given crabs in general have been around adapting for 145m years, I do not think the current levels will be detrimental.
It's not my field, but doesn't the rate-of-change matter even more than absolute value in time? Life can and does adjust, but it takes generations; if things change too fast, then only the quickest (smallest) life-forms can adapt.
- ghastmaster 7y agoSpecies that have more offspring faster would be better able to adapt. This current rate of change is not unusual(see my reply to lukastr0).
- tezzer 7y ago"not unusual" is a little facetious, don't you think? Vinther was studying a drastic loss of polar ice in reaction to a historical (unexplained?) sudden rise in temperature, and raising an alarm in light of our current warming.
- ghastmaster 7y agoI was not trying to be facetious. I think that since we have seen two similar rises in temperature in the last 10,000 years, it is very likely they have occurred relatively frequently in the past 145m years. I do not see how what he is studying is relevant here.
- tezzer 7y agoI'm reminded of an old mentor's saying: One is an anomaly, two is a coincidence, three is a pattern. I'd be interested to know the causes and the effects of the temperature rise that makes you think this one is no big deal. There is a lot of evidence to indicate it's a very big deal.
- ghastmaster 7y agoI would love to know the causes and effects as well. Given evidence is still lacking, and this article is regarding a study that has only been done once, I would like to see follow up studies to see a pattern arise in OA effects on this species.