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Climatic adaptation refers to adaptations of an organism that are triggered due to the patterns of variation of abiotic factors that determine a specific
climate Climate is the long-term weather pattern in a region, typically averaged over 30 years. More rigorously, it is the mean and variability of meteorological variables over a time spanning from months to millions of years. Some of the meteoro ...
. Annual means, seasonal variation and daily patterns of abiotic factors are properties of a climate where organisms can be adapted to. Changes in behavior, physical structure, internal mechanisms and metabolism are forms of adaptation that is caused by climate properties. Organisms of the same species that occur in different climates can be compared to determine which adaptations are due to climate and which are influenced majorly by other factors. Climatic adaptations limits to adaptations that have been established, characterizing species that live within the specific climate. It is different from
climate change adaptation Climate change adaptation is the process of adjusting to the effects of climate change, both current and anticipated.IPCC, 2022Annex II: Glossary, based on their current climatic adaptations. Climates with larger abiotic fluctuations tend to have species with a higher fluctuation tolerance, hence being able to adapt better to climate change. Other research questions involve the clarification of distinct differences between relatable species such as average size and behavioral patterns.


Measuring Climatic Adaptation

Generally, the experimental measure of climate adaptation is conducted by exposing an experimental population to different environmental stimuli. Successful studies outside of a laboratory setting take place in locations with a variable annual climate. Areas where annual temperature and weather extremes vary greatly can give insight into the climate adaptability of organisms that live there. Tropical or arctic microclimates, for example, would be ideal settings for experimentation, as annual temperature and weather can vary greatly. Additionally, laboratory settings could work with certain creatures that have defense mechanisms for certain environmental changes, such as ''Drosophilas chill-coma adaptation. The population's performance or behavior can then be plotted against the ecological-climatic factor being tested. High changes in individual behavior in response to a change in environment point to the conclusion that the population has high climate adaptability. Adaptation lag can occur when local populations perform significantly better than populations from other environments; however, this lag can be compensated for if the species in question has very high genetic diversity.


Examples

Many species have varying levels of climatic adaptation. Differing average annual temperatures can have varying effects on a population's average body temperature, metabolic rate, or body size. But the actual effect of climatic adaptation depends greatly on the species in question and often the amount of genetic variability within that species. * The bodies of some animals, such as woodrats, are inversely correlated with the mean annual temperature of their environment. This is an applied example of Bergmann's rule * ''Drosophila'' species occur in both tropical climates, where the temperature is warm, and temperate climates, where the temperature is colder. When both groups of species are brought to a cold induced comatose state, the species of the tropical climates either way don't survive or recover significantly slower from the cold induced comatose state when brought back to room temperature compared to the species of the temperate Drosophila. The ability to recover fast from a cold induced comatose state indicates a climatic adaptation that can be referred to as chill-coma tolerance. * Many arctic birds and mammals can change their heat dissipation and metabolic rate in response to changes in temperature, as different populations of the same species display different averages depending on their current climate. * In arctic foxes (''Alopex lagopus),'' starvation experiments indicate that the body mass in the arctic fox is regulated according to a seasonally changing set point and not by the availability of food. The basic metabolic rate varies seasonally being lower in winter than summer. The fur thickness can increase 140% from summer to winter.


See also

* Adaptation to global warming, ways social and biological systems can respond to
climate change Present-day climate change includes both global warming—the ongoing increase in Global surface temperature, global average temperature—and its wider effects on Earth's climate system. Climate variability and change, Climate change in ...
to reduce their vulnerability to its effects *
Climate change (general concept) Present-day climate change includes both global warming—the ongoing increase in global average temperature—and its wider effects on Earth's climate system. Climate change in a broader sense also includes previous long-term changes ...
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Global warming Present-day climate change includes both global warming—the ongoing increase in global average temperature—and its wider effects on Earth's climate system. Climate change in a broader sense also includes previous long-term changes ...
(recent warming) *
Evolution Evolution is the change in the heritable Phenotypic trait, characteristics of biological populations over successive generations. It occurs when evolutionary processes such as natural selection and genetic drift act on genetic variation, re ...
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Evolutionary biology Evolutionary biology is the subfield of biology that studies the evolutionary processes such as natural selection, common descent, and speciation that produced the diversity of life on Earth. In the 1930s, the discipline of evolutionary biolo ...
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Melanism Melanism is the congenital excess of melanin in an organism resulting in dark pigment. Pseudomelanism, also called abundism, is another variant of pigmentation, identifiable by dark spots or enlarged stripes, which cover a large part of the bod ...
, in relation to “industrial melanism”


References

{{Reflist Evolution by phenotype