DDLF

PREDATION

• Predation- the act of killing and eating other animals; the act of preying on another animal.

PREDATION/EXAMPLES

• A Hyena eating a deer.
• A Cheetah eating an African Wild Dog.
• Hyena eating a zebra

EFFECT ON THE POPULATION GROWTH

• strong influence on the population sizes of predator and prey. In general, increasing the population size of prey will result in a corresponding increase in the population size of the predator because the predator has more food. Similarly, prey populations are expected to decline as the population size of a predator increases because of increased predation pressure.

RESOURCE SLIDE

• Predation and temporal resource availability are among the most important factors determining prey community dynamics and composition. Both factors have been shown to affect prey diversity, but less is known about their interactive effects, especially in rapidly evolving prey communities.

PARASITISM

• relationship between two things in which one of them (the parasite) benefits from or lives off of the other

PARASITISM EXPLAIN

• Fleas on a dog
• Bees and flowers
• Mosquitos and blood

EFFECT ON POPULATION GROWTH

• They may cause the death of the host due to a direct lethal effect or an indirect effect.

RESOURCE SLIDE

• In biology/ecology, parasitism is a non-mutual symbiotic relationship between species, where one species, the parasite, benefits at the expense of the other, the host. Traditionally parasite (in biological usage) referred primarily to organisms visible to the naked eye, or macroparasites (such as helminths).

COMPETITION

• Between members of the same population or between different species

COMPETITION EXAMPLES/INTERSPECIFIC

• A cheetah and a lion
• A lion and a hyena
• Deer and leopard

COMPETITION EXAMPLES/INTRASPECIFIC

• Zebra vs Zebra
• Lion vs Lion
• Monkey vs monkey

EFRECT ON THE POPULATION

• Competition is the act of two species or organisms battling for a certain goal such as trees for sunlight. Neither species/ organism benefits and the populations will either remain the same or begin to decrease.

RESOURCE SLIDE

• competition refers to two different species vying for the same resource and intraspecific competition refers to individuals of the same species competing for the same resource. The term resource can describe water, food, shelter, territory, light or any means to maintain life and reproduce.

DISEASE

• an illness that affects a person, animal, or plant : a condition that prevents the body or mind from working normally

EXAMPLE

• Chicken pox
• AIDS
• Malaria

EFFECT ON POPULATION GROWTH

• Population density and urbanization – Diseases spread more quickly among people who live in close proximity to each other. Currently, over 50% of the global population lives in urban areas. With more people living in dense conditions, there is more frequent contact between more individuals, allowing disease transmission to easily occur.

RESOURCE SLIDE

• In addition to the global HIV/AIDS epidemic, numerous other infections kill millions of people each year. According to the WHO, malaria kills nearly half a million people each year, mainly in Africa. And TB is second only to HIV/AIDS, with an estimated 1.3 million deaths in 2013. Millions more are infected each year with Hepatitis, Dengue, and others. Yet progress is being made thanks to the selfless efforts of healthcare professionals.