Use the graph to predict the population of deers in 2005.
Use the graph to predict the population of deers in 2005. => 8 or 1000 or 11 or 10..
Population Growth
>In S - shaped or sigmoid growth the population show an initial gradual increase in population size, followed by an exponential increase and then a gradual decline to near constant level. Sigmoid growth curve is formed of five phases. a) Lag phase b) Positive acceleration p..
Consequences of Over Population/Impact of Population Growth
India is the best country to study the consequences of over population. Geometric growth in population has pushed our country into population explosion leading to number of serious consequences. Some of them are: Decreased availability of food and clothing. Decreased p..
Impact of Population Growth
Consequences of Over Population/Impact of Population Growth - India is the best country to study the consequences of over population. Geometric growth in population has pushed our country into population explosion leading to number of serious conseq..
Malthus' Theory of Population
A British economist Malthus'(1778) proposed a theory that population grows at geometric proportion and after the imbalance between population and resources is set in, population is automatically checked by natural disasters (like famine, epidemic, disease, earthq..
A British economist Malthus'(1778) proposed a theory that population grows at geometric proportion and after the imbalance between population and resources is set in, population is automatically checked by natural disasters (like famine, epidemic, disease, earthq..b) Competition resource use type
In this each population inhibits the other indirectly for the resource in short supply. Example: Trees, shrubs and herbs in a forest, struggle for sunlight, water and nutrients. Similarly, grasshoppers, rats, rabbits, deer (herbivores) compete for food especially during draught..
Ecological Balance
2 = carnivore order-2) The food chains and other such interrelationships in the ecosystems create a balance in the environment that is called the ecological balance. Man is also a part of these food chains and webs. However, man tries to modify the environment to suit his needs unlike the other c..
2 = carnivore order-2) The food chains and other such interrelationships in the ecosystems create a balance in the environment that is called the ecological balance. Man is also a part of these food chains and webs. However, man tries to modify the environment to suit his needs unlike the other c..g) Natural calamities
A drastic change in the environment destabilizes or even exterminates a population. Natural calamities such as earthquake, volcanic eruptions etc. cause drastic changes in the environment leading to the destruction of the resource..
Sigmoid curve
A sigmoid curve is characterised by a lag phase (wherever the growth rate is negligible), positive acceleration phase (wherever the growth rate is moderate), logarithmic phase (where in the growth rate is high) and negative acceleration phase (where in the growth rate is 0)...
A sigmoid curve is characterised by a lag phase (wherever the growth rate is negligible), positive acceleration phase (wherever the growth rate is moderate), logarithmic phase (where in the growth rate is high) and negative acceleration phase (where in the growth rate is 0)...Biotic Stability
Biotic Stability - Since a biotic community is formed of a large number of diverse type of populations of plants and animals and microbes, all these populations are essential for biotic stability. By definition 'biotic stability is the absence of any major fluctuations in the ..
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