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Does climate affect a mammals BMR - Coggle Diagram
Does climate affect a mammals BMR
Abstract
background
Avian and mammalian basal metabolic rates are very different rates as seen in graphs.
There are many different types of environments that mammals endure and how does that affect an animals BMR
Methods
Mammals are the only animals used for this section to give a more focused data set.
We are using a database with this information, with some major outliers removed. Observational
Animals in nearctic climates have a higher average BMR then another region
Introduction
background
Animals are all over the planet. They also have very different metabolic rates and energy levels. Does the environment they have to survive in affect their basal metabolic rate because of the harsh winter, the heat, swimming, etc.Mammals in Nearctic environments are often scavengers or predators because vegetation is minimal for most of the year. Warmer climate mammals require less energy for heating their bodies compared to Nearctic environments
Unknown/problem
Are there effects from the environment, predator/ prey status, or do mostly herbivores or Carnivores do better? The purpose is to see the relationship between these factors and if there are any correlations
Questions / hypothesis
Does the environment have an effect on mammals' BMR? There is no correlation between mammals' BMR and their environment. There is a pattern shown in the animals' BMR and environment. The harsh winters of the neartic require a higher BMR because more calories are used for sustaining body temp. Animals in warmer climates have a higher BMR because maintaining body temp as in cooling off, panting or sweating or higher daily activity.
Approach
Using the information on each mammal's biogeographic data on the Quaaradvark site, the average BMR for the species are sorted and the overall region is given a average BMR.
Methods
Subjects
All data is from mammals
design
independent: Biogeographic region dependent: average BMR, Controls: outliers removed, data given from the same site.
procedures
On Quaardvark, I entered Mammalia as the animal group and then added the biogeographic regions as well as the average mass for each species and their BMR. then i used a bar graph to sort and average in Excel.
Results
graphs
Discussion
secondary findings
Animals that do survive in the cold climates have a very different diet and biological needs compared to animals in warmer climates. Hibernation could also play a role into these findings as these animals are required to store lots of food to last the lo
findings
The enviroment has an effect on BMR for a mammal. neartic and paleoartic species overwhelimngly show higher BMR compared to other regions. Studys show polars bears have a higher BMR compared to the average bear.
https://science.sandiegozoo.org/news/study-shows-polar-bear-metabolic-rates-are-higher-previously-predicted
The database heavily represented animals from the cold regions. The way of organizing data could have been faulty. Could have included avian species for more info; it would be better to sort this data myself (did not have a ton of time to filter through 300 species)
Study Shows Polar Bear Metabolic Rates Are Higher than Previously Predicted. 2018 Feb 2. San Diego Zoo Wildlife Alliance. [accessed 2026 Sept 25].
https://science.sandiegozoo.org/news/study-shows-polar-bear-metabolic-rates-are-higher-previously-predicted
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Lovegrove B. G. (2000). The Zoogeography of Mammalian Basal Metabolic Rate. The American naturalist, 156(2), 201–219. [2026 Sept 25].
https://doi.org/10.1086/303383
White CR. 2005. Allometric scaling of mammalian metabolism. Journal of Experimental Biology. 208(9):1611–1619. doi:10.1242/jeb.01501. [accessed 2026 Sept 25].
https://jeb.biologists.org/content/208/9/1611.short
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