R and K selected species

• Population change over time is a crucial consideration when using population data.
• Standardisation for comparison is achieved through birth rates, which are calculated as births per 1000 per year.
• Species have different population dynamics, including high birth or death rates, migration, and changes in the age structure of the population.
• Rabbit and squirrel are examples of species with high births and deaths.
• Rhino and elephants are examples of species with low births and deaths.
• Himalayan balsam and rabbits are examples of species with high reproductive rates.
• elephants and Panda are examples of species with low reproductive rates.
• Shark and People are examples of species with different reproductive strategies.
• Lots of offspring in R selected species result in low maternal care.
• Few offspring in K selected species result in high maternal care.
• Reproduction potential is determined by four factors: number of offspring, age to maturity, length of gestation, and length of fertility.