Ecological Niche: An ecological niche is the role and position of a species in its environment, describing how it interacts with resources and competitors and how it affects these factors. It includes how a species grows when resources are abundant and threats are minimal and how it competes for resources, serves as prey, and hunts for food.
A species' niche depends on biotic factors like food and predators and abiotic factors such as temperature, soil nutrients, and light. For example, dung beetles eat dung and store it for their larvae, which helps recycle nutrients and aerate the soil.
Understanding ecological niches is key in studying ecological communities and their responses to environmental changes, especially with the impacts of climate change. NEET Biology Notes on ecological niche are provided in the article below.
An ecological niche refers to a species' specific role or position within its ecosystem. It includes the conditions created by both living (biotic) and non-living (abiotic) elements of the ecosystem that affect the species' ability to reproduce and obtain essential resources like food, water, and shelter. Additionally, a niche encompasses the impact the species has on its ecosystem.
In 1957, zoologist G. Evelyn Hutchinson identified two primary types of ecological niches: fundamental niches and realized niches.
A fundamental niche refers to the entire range of environmental conditions that a species can occupy and utilize without any limiting factors. It represents all the conditions where a species can potentially live.
For example, in a forest, sparrows feed on berries found on bushes and the forest floor. The fundamental niche of the sparrows includes the entire area with berries, covering the bushes and the forest floor where berries have fallen.
Realized niche is the actual environment a species inhabits, which is often more limited due to competition, predation, and other environmental stresses.
Continuing with the sparrow example, mice on the forest floor also eat berries and quickly collect them after they fall. This competition with mice means fewer berries are available on the forest floor for sparrows. Thus, the sparrows' fundamental niche is reduced, and their realized niche becomes only the berries on the bush branches.
Another example is the rat’s intestine, which limits the number of species that can live there. In the mouse intestine, parasitic worms like acanthocephalans and tapeworms compete for nutrients from the blood in the intestinal walls.
An ecological niche encompasses everything a species needs to survive and reproduce within its environment. It represents the species' role and interactions within the ecosystem. Key aspects of an ecological niche include:
An ecological niche refers to the role an organism plays in its habitat, essential for understanding how ecosystems are structured and function. Here are some key reasons why ecological niches are important:
For instance, dung beetles play a unique role by consuming dung, aerating soil, and releasing beneficial nutrients, demonstrating the importance of ecological niches in maintaining ecosystem balance.
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An ecological niche refers to the unique role and position that a species occupies within its environment. This includes how the species obtains food and shelter, reproduces, and interacts with other species and surroundings. Here are some examples of ecological niches:
These examples demonstrate how species have evolved specific traits and behaviors to fit into particular ecosystem niches. This diversity contributes to the stability and richness of ecosystems.
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