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POPULATIONS

POPULATIONS. By: J essica E aton. POPULAION ECOLOGY. STUDIES THE DYNAMICS OF SPECIES’ POPULATION AND HOW THESE POPULATIONS INTERACT WITH THE ENVIRONMENT. PVA POPULATION VIABILITY ANALYSIS- ALLOWS ECOLOGIST TO PREDICT LONG-TERN PROBABILITY OF A SPECIES PERSISTING IN A HABITAT.

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POPULATIONS

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  1. POPULATIONS By: Jessica Eaton

  2. POPULAION ECOLOGY • STUDIES THE DYNAMICS OF SPECIES’ POPULATION AND HOW THESE POPULATIONS INTERACT WITH THE ENVIRONMENT. • PVA POPULATION VIABILITY ANALYSIS- ALLOWS ECOLOGIST TO PREDICT LONG-TERN PROBABILITY OF A SPECIES PERSISTING IN A HABITAT. • LIVING IN GROUPS PROVID ADVANTAGES SUCH AS INCREASED PROTECTION AND INCREASED MATING.

  3. Carrying Capacity • - number of organisms that can be supported in a given area. What determines the carrying capacity are things like availability of food, space, oxygen, and nutrient levels. • Predation removes very old, very young, and the weakest members of the population. It may reduce the population of the prey • Biotic potential is the maximum rate at which a population can grow • http://www.gdrc.org/uem/footprints/carrying-capacity.html

  4. Thomas Malthus • Malthus was a political economist who was concerned about what he saw as the decline of living conditions 19th century England. • Reasons • The overproduction of children • Resources couldn’t keep up with the rising population • The irresponsibility of the lower class. • Suggested- smaller family size, postponement of marriage (lower birth rate), correct condition of lower class, & improving agricultural productivity.

  5. Reproductive Strategies • http://wiki.answers.com/Q/What_are_reproductive_strategies

  6. Survivorship • Survivorship curves show age distribution characteristics of species, reproduction strategies, and life history. • Each represents a balance between natural resource limitations and interspecific competition.

  7. http://www.youtube.com/watch?v=RBOsqmBQBQk

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