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Updated: May 10, 2026

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Published on: September 4, 2016

生命阶段的利基区分和功能策略促进了掠食性类类动物的同时出现

Ana Claudia da Silva1, Débora P Paula2, David Andow3

  • 1Programa de Pós-graduação em Ecologia, Instituto de Ciências Biológicas, Universidade de Brasília (UnB), Brasília, DF, Brazil.

Oecologia
|January 30, 2026
PubMed
概括

种类的共存依赖于利基区分,生命阶段的转变影响息地使用. 非作物植被通过促进空间隔离和资源可用性,有助于鱼类的共存.

关键词:
生物多样性 生物多样性竞争 竞争 竞争 竞争密度依赖性 密度依赖性一般主义的掠食者.其他非作物植物.

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Life Histories01:29

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Overview
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Population Growth

Population size is dynamic, increasing with birth rates and immigration, and decreasing with death rates and emigration. In ideal conditions with unlimited resources, populations can increase exponentially, which plots as a J-shaped growth rate curve of population size against time. This type of curve is characteristic of newly-introduced invasive species, or populations that have suffered catastrophic declines and are rebounding.
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Symbiosis

Symbiotic relationships are long-term, close interactions between individuals of different species that affect the distribution and abundance of those species. When a relationship is beneficial to both species, this is called mutualism. When the relationship is beneficial to one species but neither beneficial nor harmful to the other species, this is called commensalism. When one organism is harmed to benefit another, the relationship is known as parasitism. These types of relationships often...
Ecological Niches02:02

Ecological Niches

All organisms have a position within an ecosystem. The complete set of living and nonliving factors—including food resources, climate, and terrain—that define the position of a given organism are collectively referred to as the organism’s ecological niche.
Competition02:34

Competition

When organisms require the same limited resources within an environment, they may have to compete for them. Competition is a net-negative interaction. Even if two competing individuals or populations do not interact directly, the overall fitness of both competitors is lowered as a result of not having full access to the limited resource.
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Predator-Prey Interactions

Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.