a graph showing the process of animals or humans or plants and their growth rate over time.
Type II
Type 3. Frogs are defenseless at a young age and often die, but survive later in life because of experience.
Type I survivorship curves are typical of species that produce few offspring but invest heavily in their care, such as humans. Type II survivorship curves are seen in species that have a constant mortality rate throughout their lifespan, such as birds. Type III survivorship curves are common in species that produce many offspring but provide little parental care, like insects.
A population growth curve shows the change in the size of a population over time. It typically consists of four phases: exponential growth, plateau, decline, and equilibrium. The curve is often represented by an S-shaped logistic curve, which shows the pattern of population growth leveling off as it reaches carrying capacity.
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Type 1 = high survivorship when young, and low at old age
Type I
A type 2 survivorship curve implies a roughly constant mortality rate across all age groups of the species.
Type 1
Type II
Chimpanzees are Type I organisms, and have cucarachas in thier pants.
type 1 is what it seems like but its type 2
Cheetahs exhibit a Type III survivorship curve. This means that they have a high mortality rate among the young, but those that survive their early years have a higher chance of living longer.
Opportunistic life history species are typically associated with a Type III survivorship curve, characterized by high mortality rates early in life and high reproductive output. This strategy favors producing a large number of offspring with minimal parental care to take advantage of unpredictable and unstable environments.
Humans exhibit survivorship curve similar to that of K-selected species, which invest heavily in fewer offspring with higher parental care, resulting in a longer lifespan. Furthermore, humans also display characteristics of Type I survivorship curve, where most individuals survive to old age due to the high level of parental investment and social support.
Seagulls and other birds
The survivorship curve that best represents the human life table is typically a Type I curve. This curve is characterized by high survival rates during early and middle life, with a significant drop in survival as individuals reach old age. In developed countries, this pattern reflects advancements in healthcare and living conditions that have increased longevity. However, in less developed regions, the curve may show elements of Type II or Type III, where mortality rates are higher in infancy or throughout life.