Billy_Bob
Diamond Member
You people are so damn predictable.... Not even empirical evidence calling you out liars stops the boy who cries wolf...
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You people are so damn predictable.... Not even empirical evidence calling you out liars stops the boy who cries wolf...
Not really sure if mastodon, mammoth, cave bear, sabre tooth tiger, giant sloth, etc. counts as mass extinction event. We killed them to eat and to avoid being eatenThe most recent mass extinction was the Chicxulub Impact event, 66 million years ago. Homo Sapiens has been around for 200,000 years. Humans have not been through ANY mass extinctions.
The most recent mass extinction was the Chicxulub Impact event, 66 million years ago. Homo Sapiens has been around for 200,000 years. Humans have not been through ANY mass extinctions.
But Not AGW ??More than 1,100 mutilated dolphins have washed up on French beaches this year, victims of industrial net fisherman
1,100 mutilated dolphins have washed up on French beaches
CO2 did that? Really!? WowMore than 1,100 mutilated dolphins have washed up on French beaches this year, victims of industrial net fisherman
1,100 mutilated dolphins have washed up on French beaches
As we saw from the OCO2 satellite, the main human contributors were China and rain forest fires. What's the plan to combat them?Numerous studies have concluded that we are moving into the Earth's sixth mass extinction event. The cause are almost all anthropogenic: pollution, loss of habitat, global warming, disruption of predator/prey relationships, migratory changes, introduction of new diseases, etc.
This study finds that increased levels of anthropogenic global warming lead to increased number of species extinction events. Acting to mitigate AGW will limit the number of species lost.
Extinction risk from climate change
Abstract
Climate change over the past ∼30 years has produced numerous shifts in the distributions and abundances of species1,2 and has been implicated in one species-level extinction3. Using projections of species' distributions for future climate scenarios, we assess extinction risks for sample regions that cover some 20% of the Earth's terrestrial surface. Exploring three approaches in which the estimated probability of extinction shows a power-law relationship with geographical range size, we predict, on the basis of mid-range climate-warming scenarios for 2050, that 15–37% of species in our sample of regions and taxa will be ‘committed to extinction’. When the average of the three methods and two dispersal scenarios is taken, minimal climate-warming scenarios produce lower projections of species committed to extinction (∼18%) than mid-range (∼24%) and maximum-change (∼35%) scenarios. These estimates show the importance of rapid implementation of technologies to decrease greenhouse gas emissions and strategies for carbon sequestration.
The idea that a mass extinction could be driven by a 1.6C difference in temp is absurd. Agricultural runoff, deforestation are much more obvious culprits. Of course we are ignoring such things because CO2 is the only concern.Numerous studies have concluded that we are moving into the Earth's sixth mass extinction event. The cause are almost all anthropogenic: pollution, loss of habitat, global warming, disruption of predator/prey relationships, migratory changes, introduction of new diseases, etc.
This study finds that increased levels of anthropogenic global warming lead to increased number of species extinction events. Acting to mitigate AGW will limit the number of species lost.
Extinction risk from climate change
Abstract
Climate change over the past ∼30 years has produced numerous shifts in the distributions and abundances of species1,2 and has been implicated in one species-level extinction3. Using projections of species' distributions for future climate scenarios, we assess extinction risks for sample regions that cover some 20% of the Earth's terrestrial surface. Exploring three approaches in which the estimated probability of extinction shows a power-law relationship with geographical range size, we predict, on the basis of mid-range climate-warming scenarios for 2050, that 15–37% of species in our sample of regions and taxa will be ‘committed to extinction’. When the average of the three methods and two dispersal scenarios is taken, minimal climate-warming scenarios produce lower projections of species committed to extinction (∼18%) than mid-range (∼24%) and maximum-change (∼35%) scenarios. These estimates show the importance of rapid implementation of technologies to decrease greenhouse gas emissions and strategies for carbon sequestration.
Is there some sort of Carbon Credit I can pay into that will offset this inevitable destruction???Numerous studies have concluded that we are moving into the Earth's sixth mass extinction event. The cause are almost all anthropogenic: pollution, loss of habitat, global warming, disruption of predator/prey relationships, migratory changes, introduction of new diseases, etc.
This study finds that increased levels of anthropogenic global warming lead to increased number of species extinction events. Acting to mitigate AGW will limit the number of species lost.
Extinction risk from climate change
Abstract
Climate change over the past ∼30 years has produced numerous shifts in the distributions and abundances of species1,2 and has been implicated in one species-level extinction3. Using projections of species' distributions for future climate scenarios, we assess extinction risks for sample regions that cover some 20% of the Earth's terrestrial surface. Exploring three approaches in which the estimated probability of extinction shows a power-law relationship with geographical range size, we predict, on the basis of mid-range climate-warming scenarios for 2050, that 15–37% of species in our sample of regions and taxa will be ‘committed to extinction’. When the average of the three methods and two dispersal scenarios is taken, minimal climate-warming scenarios produce lower projections of species committed to extinction (∼18%) than mid-range (∼24%) and maximum-change (∼35%) scenarios. These estimates show the importance of rapid implementation of technologies to decrease greenhouse gas emissions and strategies for carbon sequestration.
The most recent mass extinction was the Chicxulub Impact event, 66 million years ago. Homo Sapiens has been around for 200,000 years. Humans have not been through ANY mass extinctions.
The most recent mass extinction was the Chicxulub Impact event, 66 million years ago. Homo Sapiens has been around for 200,000 years. Humans have not been through ANY mass extinctions.
Conclusion of the Temperature Dependent Hypoxia article
CONCLUSION
Ocean warming and O2 loss simulated in an Earth System Model of end-Permian climate change imply widespread loss of aerobic habitat among animal types with diverse thermal and hypoxia tolerances. The resulting extinctions are predicted to select most strongly against higher-latitude species, whose biogeographic niche disappears globally. The combined physiological stresses of ocean warming and O2 loss largely account for the spatial pattern and magnitude of extinction observed in the fossil record of the “Great Dying.” These results highlight the future extinction risk arising from a depletion of the ocean’s aerobic capacity that is already under way.
More than 1,100 mutilated dolphins have washed up on French beaches this year, victims of industrial net fisherman
1,100 mutilated dolphins have washed up on French beaches