Sentences with phrase «glacial conditions during»

Not exact matches

Instead, the fossil record indicates they vanished during the Earth's glacial - interglacial transition, which occurred about 12,000 years ago and led to much warmer conditions and the start of the current Holocene period.

This was during glacial periods suggesting they were well adapted to these harsh conditions.

The sequence of climatic forcings and responses during deglaciations (transitions from full glacial conditions to warm interglacials) are well documented.

The current secondary contact is thought to result from a range expansion associated with the amelioration of climatic conditions after the last glacial maximum (∼ 18000 ya)[20], although previous glacial / interglacial cycles during the Pleistocene may have provided multiple opportunities for vicariant and past hybridization events.

Based on previous studies it was assumed that the entire region was much drier during the Last Glacial Maximum compared to present conditions, «Niedermeyer concludes.

During the last part of the Pleistocene there were actually five major periods of glaciation with four periods of warmer non glacial conditions between them.

The diversification events influencing island and mainland gray foxes closely correspond to climatic fluctuations, particularly the shift from fully glacial to non-glacial conditions during the past 20,000 years.

Aren't the neo-glacial readvances and other signs of a cooling climate during the past 3,000 years evidence of a gradual return to glacial conditions (prior to the anthropogenic influence brought on by the industrial revolution)?

During glacial states near permanent El Nino conditions exist.

Carbon starvation, which apparently sometimes occurs during glacial periods due to the low levels of CO2 that are reached, has the same effect on C3 plants * trees, shrubs, and such) as do warm, dry conditions when the warm is excesaive.

Müller, C. Reconstruction of the paleontological conditions at the Laptev Sea continental margin during the last two glacial / interglacial cycles based on sedimentological and mineralogical investigations.

This type of behavior is especially evident during transitions from glacial to interglacial conditions, when climate is affected by a wide variety of time - varying influences and is relatively unstable.

each period of warming during the descent to the next glacial stage should be more intense than the previous ones, as climatic variability increases outside the warm conditions of an interglacial climatic optimum.

We know that during the LIA sea - ice reached Scotland in the winter, so it is very counter-intuitive that under much colder glacial conditions sea ice would actually be reduced.

Other processes must be responsible for the 40 - to 50 - ppm pCO2 drawdown during the initial transition from interglacial to glacial conditions as well as for a comparable pCO2 increase during the latter part of glacial terminatins.