Which Skin Colour Distribution Map is Most Reliable?

In summary: There is significant disagreement over which map is more reliable, and newer maps are not necessarily considered more trustworthy.
  • #1
snorkack
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I see 2 commonly quoted maps for distribution of native human skin colour.
Both are old; they have a lot of odd divergences - as well as many matching features, some of which are hard to explain.
One is Biasutti, 1940:
https://upload.wikimedia.org/wikipedia/commons/8/81/Map_of_skin_hue_equi.png
Another is Gerland, 1896:
https://en.wikipedia.org/wiki/Human...780_Global_map_of_skin_color_distribution.jpg

Which of these is reliable? Is there any newer map considered more trustworthy?
 
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  • #2
snorkack said:
I see 2 commonly quoted maps for distribution of native human skin colour.
Both are old; they have a lot of odd divergences - as well as many matching features, some of which are hard to explain.
One is Biasutti, 1940:
https://upload.wikimedia.org/wikipedia/commons/8/81/Map_of_skin_hue_equi.png
Another is Gerland, 1896:
https://en.wikipedia.org/wiki/Human...780_Global_map_of_skin_color_distribution.jpg

Which of these is reliable? Is there any newer map considered more trustworthy?
With populations which are now highly mobile due to a number of factors, it's a bit dated, IMO, to assign some arbitrary geographical distribution of native human skin color, whatever is meant by that.

How has the world changed between 1896, 1940, and 2016? Any significant historical or political events which might have shaken up the "snow globe" over that period of time?
 
  • #3
SteamKing said:
With populations which are now highly mobile due to a number of factors, it's a bit dated, IMO, to assign some arbitrary geographical distribution of native human skin color, whatever is meant by that.

How has the world changed between 1896, 1940, and 2016?
Both the 1896 and 1940 maps expressly aimed to show the native skin colour distribution. They were very much aware of migrations of people since 1492, and deliberately aimed to show the pre-1492 distribution.
With some conspicuous differences in results.
So which is the correct map?
 
  • #4
snorkack said:
Both the 1896 and 1940 maps expressly aimed to show the native skin colour distribution. They were very much aware of migrations of people since 1492, and deliberately aimed to show the pre-1492 distribution.
With some conspicuous differences in results.
So which is the correct map?
That's asking a lot. Much of the globe was unexplored in 1492, and certainly the study of population demographics lay far down the scientific road.
 
  • #5
Sure. But 1896 and 1940 were studies of population demographics. Seeking to get data about native people.
 
  • #6
Clarification - So to that end, please tell us what are you trying to do, not how you think it should be done.
Here is why:
North America, for example, has been completely undone from 'nativity' (if there is such a thing) by the introduction of Western diseases and technology starting in the 1500's. And subsequent immigration. See J. Diamond 'Guns Germs, and Steel' The same is true in Australia, starting from the 1800's. Brazil, ditto. This list is long. So determining who is 'native' is not based on genetics but stories and fuzzy verbal histories and so on. This is why the approach used to approximate relative DNA for early humans(i.e., neanderthal, Denisovan, and modern humans) is considered most likely to reflect what happened.

So getting a reasonable static picture of native human traits is a huge challenge. IMO. The really good data comes from living people and DNA. Somewhat like the services Ancestry.com and its cousins provide.
 
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  • #7
One feature about which the two maps agree is that they show a wide range of native skin colours in Americas.
The patterns, however, are quite strikingly different.
Is the wide variability of native skin colour across Americas a real feature?
 
  • #8
snorkack said:
Is the wide variability of native skin colour across Americas a real feature?
What native skin color? Are you speaking of native Americans prior to the take over by Europeans? And why?
 
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  • #9
Evo said:
Are you speaking of native Americans prior to the take over by Europeans?
Yes.
It contrasts with another feature both the maps agree on: uniform skin colour throughout Australia.
 
  • #10
snorkack said:
I see 2 commonly quoted maps for distribution of native human skin colour.
Both are old; they have a lot of odd divergences - as well as many matching features, some of which are hard to explain.
One is Biasutti, 1940:
https://upload.wikimedia.org/wikipedia/commons/8/81/Map_of_skin_hue_equi.png
Another is Gerland, 1896:
https://en.wikipedia.org/wiki/Human...780_Global_map_of_skin_color_distribution.jpg

Which of these is reliable? Is there any newer map considered more trustworthy?

I doubt that you will be able to find a modern world map of skin colour distribution.
 

What is skin colour distribution?

Skin colour distribution refers to the variation in skin colour across different populations and ethnic groups. It is determined by numerous factors, including genetic makeup, geographic location, and environmental factors.

What causes differences in skin colour distribution?

The main factor that determines skin colour distribution is the amount of melanin in the skin. Melanin is a pigment produced by specialized cells called melanocytes. The more melanin present in the skin, the darker the skin colour. Other factors that can influence skin colour include exposure to sunlight, diet, and certain medical conditions.

Why are some people's skin darker than others?

As mentioned, the amount of melanin in the skin is the primary factor that determines skin colour. People with higher levels of melanin tend to have darker skin, while those with lower levels have lighter skin. This variation in melanin levels can be attributed to genetic factors and evolutionary adaptations to different environments.

Can skin colour distribution change over time?

Yes, skin colour distribution can change over time. This can be due to a variety of factors, including exposure to sunlight, aging, and certain medical conditions. For example, prolonged exposure to sunlight can cause the skin to produce more melanin, resulting in a darker skin colour.

Is there a difference in skin colour distribution between races?

While certain populations and ethnic groups may have a higher prevalence of certain skin colours, skin colour distribution does not follow strict racial lines. In fact, there is more variation in skin colour within races than between races. This is because skin colour is determined by a complex interaction of genetic, environmental, and cultural factors.

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