Ecological Niche BSc 3rd Year | Ecological Niche Explained for Csir Net Life Science
•February 21, 2026
0
Why It Matters
Grasping niche concepts helps ecologists predict species coexistence and design effective biodiversity conservation and invasive‑species control measures.
Key Takeaways
- •Niche = habitat plus organism’s behavior and resource use.
- •No two species can occupy identical ecological niches simultaneously.
- •Broader niche breadth increases survival chances, especially for pioneers.
- •Resource partitioning and character displacement reduce niche overlap competition.
- •Gause’s competitive exclusion principle shown by Paramecium competition experiments.
Summary
The video lectures on ecological niche, defining it as the functional role of a species within its ecosystem, and distinguishes it from habitat, which is merely the physical location where an organism lives.
It explains that a niche comprises habitat plus the organism’s behavior—its feeding, reproductive, and activity patterns—and emphasizes that no two species can share an identical niche, leading to competition. Concepts of niche breadth, niche shift, and overlap are discussed, noting that broader niches confer greater survival, especially for pioneer species.
The presenter illustrates these ideas with experiments: Paramecium species competing in shared cultures demonstrate Gause’s competitive exclusion principle; warbler birds partition tree sections to avoid overlap; and finch beak size divergence on islands exemplifies character displacement.
Understanding niche dynamics informs conservation strategies, predicts species responses to environmental change, and guides management of invasive species by highlighting how resource partitioning or niche differentiation can mitigate competitive exclusion.
Original Description
This lecture explains Ecological niche BSc 3rd year | Ecological niche explained for csir net life science.
suman bhattacharjee,shomus biology,ecological niche,ecological niches,ecological niche means,origin of ecological niche,ecological niche definition,pokemon ecological niches,etymology of ecological niche,biological niche,competition and the ecological niche,biological niche and habitat,ecological research,ecological roles,ecological succession,ecological relationship,niche,fundamental niche,ecosystem ecology - habitat and niche,realized niche
Join, Shomu's Biology csir net life science online coaching -
Get Shomu's Biology CSIR NET life science study materials here-
Download the study materials here-
Remember Shomu’s Biology is created to spread the knowledge of life science and biology by sharing all this free biology lectures video and animation presented by Suman Bhattacharjee in YouTube. All these tutorials are brought to you for free. Please subscribe to our channel so that we can grow together. You can check for any of the following services from Shomu’s Biology-
Buy Shomu’s Biology lecture DVD set- www.shomusbiology.com/dvd-store
Shomu’s Biology assignment services – www.shomusbiology.com/assignment -help
Join Online coaching for CSIR NET exam – www.shomusbiology.com/net-coaching
We are social. Find us on different sites here-
Our Website – www.shomusbiology.com
Facebook page- https://www.facebook.com/ShomusBiology/
Twitter - https://twitter.com/shomusbiology
SlideShare- www.slideshare.net/shomusbiology
Google plus- https://plus.google.com/113648584982732129198
Thank you for watching Ecological niche BSc 3rd year | Ecological niche explained for csir net life science.
0
Comments
Want to join the conversation?
Loading comments...