population cycles वाक्य
उदाहरण वाक्य
मोबाइल
- Delayed density dependence has been used by ecologists to explain population cycles.
- Population cycles of prey, particularly voles, have a considerable influence on breeding success.
- Other causes of population cycles include cycling abiotic factors.
- The most well known example of creatures which have a population cycle is the lemming.
- The number of litters per year varies with phase of population cycle ( see below ).
- These occur in a four to five-year population cycle Lemmings have similar but more violent population explosions.
- Deforestation thus affects population cycles of birds by changing predator-prey relationships and making the birds more susceptible to predators.
- What they did was lease them to other agencies, and then, when the population cycled again, they still had the buildings.
- There are a large number of natural mortality agents which could be responsible for population cycling, including parasitoids, predators, starvation, disease, and severe weather.
- In Denmark, 16 percent of all trips are made by bike and as much as 50 percent of urban populations cycle to work and school.
- Normal population cycles do not occur when dispersal is prevented; under normal conditions, dispersers have been shown to be behaviorally, genetically, and demographically different from residents.
- In winter, artificially sustaining the local wildlife population introduces issues into their natural population cycles . / / 08 : 23, 26 November 2008 ( UTC)
- Efforts to increase monarch butterfly populations by establishing butterfly gardens require particular attention to the butterfly's food preferences and population cycles, as well to the conditions needed to propagate milkweed.
- The breeding season for hares is stimulated by new vegetation and varies with latitude, location, and yearly events ( such as weather conditions and phase of snowshoe hare population cycle ).
- Juvenile breeding is rare and has only been observed in females from the first litter of the year and only in years immediately following a low point in the population cycle.
- Next in recognition has been inertial growth or an explanation of population cycles, based upon maternal effect model, the main point of the book Ecological Orbits and a more recent paper.
- Efforts to increase butterfly populations by establishing butterfly gardens require particular attention to the target species'food preferences and population cycles, as well to the conditions needed to propagate their food plants.
- Major publications from this period is his work on the Red Queen Hypothesis ( Van Valen, 1973; Stenseth, 1979; Stenseth and Maynard-Smith, 1984 ) in addition to his work on population cycles Norwegian Lemming.
- However, once immigration was introduced, the population cycles accurately depicted the oscillations predicted by the Lotka-Volterra equation, with the peaks in prey abundance shifted slightly to the left of the peaks of the predator densities.
- For many years, the population of lemmings was believed to change with the population cycle, but now some evidence suggests their predators'populations, particularly those of the stoat, may be more closely involved in changing the lemming population.
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