Human adaptation to environmental conditions. Notions of human adaptation and acclimatization, mechanisms of adaptation
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- Human adaptation to environmental conditions. Notions of human adaptation and acclimatization, mechanisms of adaptation
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- 2. INTRODUCTION….. Humans have biological plasticity,or an ability to adapt biologically to our environment.An adaptationis any variation
- 3. CONTINUE…… What type of adaptation is activated often depends on the severity and duration of stressors
- 4. TYPES OF HUMAN ADAPTATION…. Genetic adaptations can occur when a stressor is constant and lasts for
- 5. ACCLIMIZATION….. This form of adaptation can take moments to weeks to occur and is reversible within
- 6. Developmental Acclimatization….. ▪ Developmental acclimatization occurs during an individual’s growth and development. It’s also called ontological
- 7. Human genetic adaptations and human variation….. ▪ Skin color ▪ Body size and shape ▪ Race
- 8. DEFINATION OF HUMAN ADAPATION….. Any alteration in the structure or function of an organism or any
- 9. CONTINUE…. This adaptation processes-to-pathways framework is then deployed to consider human responses to biodiversity change caused
- 10. Acclimatization of human adaptation… • Developmental acclimatization occurs during an individual's growth and development. It's also
- 11. Mechanism of adaptation….. • Wallace believed that the evolution of organisms was connected in some way
- 12. CONTINUE…. • Organisms can also exhibit behavioral adaptation. One example of behavioral adaptation is how emperor
- 14. Adaptation is biological and social…. • To globally summarize, biological adaptation can be defined as “is
- 16. CONTINUE….. The LEGO bricks analogy is often used to explain how each essential, elementary functions are
- 19. LINKS FROM YOUTUBE….. ▪ https://www.youtube.com/watch?v=dtvGUWG3Rbk ▪ https://www.youtube.com/watch?v=sLMZwwhSZQg
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INTRODUCTION…..
Humans have biological plasticity,or an ability to adapt biologically to our
INTRODUCTION…..
Humans have biological plasticity,or an ability to adapt biologically to our
The biological changes that occur within an individual’s lifetime are also referred to as functional adaptations.
CONTINUE……
What type of adaptation is activated often depends on the severity
CONTINUE……
What type of adaptation is activated often depends on the severity
A stressor is anything that disrupts homeostasis, which is a “condition of balance, or stability, within a biological system…”(Jurmain et al 2013: 322).
Stressors can be abiotic, e.g., climate or high altitude, biotic, e.g., disease, or social, e.g., war and psychological stress. Cultural adaptations can occur at any time and may be as simple as putting on a coat when it is cold or as complicated as engineering, building, and installing a heating system in a building
TYPES OF HUMAN ADAPTATION….
Genetic adaptations can occur when a stressor is
TYPES OF HUMAN ADAPTATION….
Genetic adaptations can occur when a stressor is
ACCLIMIZATION…..
This form of adaptation can take moments to weeks to occur
ACCLIMIZATION…..
This form of adaptation can take moments to weeks to occur
Developmental Acclimatization…..
▪ Developmental acclimatization occurs during an individual’s growth and development.
Developmental Acclimatization…..
▪ Developmental acclimatization occurs during an individual’s growth and development.
Human genetic adaptations and human variation…..
▪ Skin color
▪ Body size
Human genetic adaptations and human variation…..
▪ Skin color
▪ Body size
▪ Race
DEFINATION OF HUMAN ADAPATION…..
Any alteration in the structure or function of
DEFINATION OF HUMAN ADAPATION…..
Any alteration in the structure or function of
the ability of a species to survive in a particular ecological niche, especially because of alterations of form or behavior brought about through natural selection.
CONTINUE….
This adaptation processes-to-pathways framework is then deployed to consider human responses
CONTINUE….
This adaptation processes-to-pathways framework is then deployed to consider human responses
The results show that a variety of adaptation processes are developing to make Lantana less disruptive and more useable—from avoidance through mobility strategies to utilizing the plant for economic diversification. However, there is currently no clear synergy or policy support to connect them to a successful long-term adaptation pathway.
These results are evaluated in relation to broader trends in adaptation analysis and governance to suggest ways of improving our understanding and support for human adaptation to biodiversity change at the household, community, and regional livelisystem levels, especially in societies highly dependent on local biodiversity for their livelihoods
Acclimatization of human adaptation…
• Developmental acclimatization occurs during an individual's growth
Acclimatization of human adaptation…
• Developmental acclimatization occurs during an individual's growth
Mechanism of adaptation…..
• Wallace believed that the evolution of organisms was
Mechanism of adaptation…..
• Wallace believed that the evolution of organisms was
The idea of natural selection is that traits that can be passed down allow organisms to adapt to the environment better than other organisms of the same species. This enables better survival and reproduction compared with other members of the species, leading to evolution.
Wallace believed that the evolution of organisms was connected in some way with adaptation of organisms to changing environmental conditions. In developing the theory of evolution by natural selection, Wallace and Darwin both went beyond simple adaptation by explaining how organisms adapt and evolve.
The idea of natural selection is that traits that can be passed down allow organisms to adapt to the environment better than other organisms of the same species. This enables better survival and reproduction compared with other members of the species, leading to evolution.
CONTINUE….
• Organisms can also exhibit behavioral adaptation. One example of behavioral
CONTINUE….
• Organisms can also exhibit behavioral adaptation. One example of behavioral
He was a French mathematician who believed that organisms changed over time by adapting to the environments of their geographical locations. Another French thinker, Jean Baptiste Lamarck, proposed that animals could adapt, pass on their adaptations to their offspring, and therefore evolve.
The example he gave stated the ancestors of giraffes might have adapted to a shortage of food from short trees by stretching their necks to reach higher branches. In Lamarck’s thinking, the offspring of a giraffe that stretched its neck would then inherit a slightly longer neck. Lamarck theorized that behaviors aquired in a giraffe's lifetime would affect its offspring.
However, it was Darwin’s concept of natural selection, wherein favorable traits like a long neck in giraffes suvived not because of aquired skills, but because only giraffes that had long enough necks to feed themselves survived long enough to reproduce. Natural selection, then, provides a more compelling mechanism for adaptation and evolution than Lamarck's theories.
Adaptation is biological and social….
• To globally summarize, biological adaptation can
Adaptation is biological and social….
• To globally summarize, biological adaptation can
In greater detail, biological adaptation designates above all a process that can be transposed at an individual level, resulting from genetic organization at a cellular level.
Thus, the immune system is capable of perception and acquisition on a physiological level. This process is then qualified as “acclimatization” or “apprenticeship” (Prochiantz, 1997; Stewart, 1994). Adaptation is biological and
CONTINUE…..
The LEGO bricks analogy is often used to explain how each
CONTINUE…..
The LEGO bricks analogy is often used to explain how each
A common theme that has emerged from analyses in evolutionary biology is thus that organisms are robust and flexible systems. If the surroundings of an organism change, its developmental systems provide the ability to adapt to achieve and maintain some function (Breuker, 2006). Robustness and flexibility are thus two antinomic properties that result from modularity.
This “property of the systems that are susceptible to deforming themselves in a coherent and autonomous manner in order to respond to internal and external stress,” (Lambert and Rezsöhazy, 2004, p.304) is called plasticity and is seen as the real “adaptive capacity” of life.
LINKS FROM YOUTUBE…..
▪ https://www.youtube.com/watch?v=dtvGUWG3Rbk
▪ https://www.youtube.com/watch?v=sLMZwwhSZQg
LINKS FROM YOUTUBE…..
▪ https://www.youtube.com/watch?v=dtvGUWG3Rbk
▪ https://www.youtube.com/watch?v=sLMZwwhSZQg