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Biocenosis and relations
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In this document you can find information about biocenosis, relations in nature such as symbiosis, amensalism or comensalism or how a predator pyramid works
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Biocenosis- Biocenotic principles apply
1. The more diverse the environmental conditions
- The higher species diversity, but the density of species populations is lower
2. The lower the variety of conditions
- the number of species is smaller, but the population density is higher
3. The more stable the living conditions, the greater the species diversity
Relationships between living organisms
They are divided into intraspecific and interspecific
Interspecific: Symbiosis, Predation, Parasitism
Competition
- 2 populations are affected negatively, they compete for food, territory,
resources
Commensalism
- Population No. 1 benefits from the relationship
- -II- No. 2 intact
Interspecies relations
Amensalism - population No. 1 negatively affects another population, while it
itself remains untouched (Molds - produce toxins that prevent the survival of
other organisms (Walnut, agate))
Cooperation
-Mutual relationship-beneficial to both populations but not necessary, example
Zebra and Ostrich
-Hateria and waterfowl - sharing a burrow
Symbiosis=Mutualism
-A relationship beneficial to both populations is necessary for both
-Mycorrhiza- symbiosis between fungi and tree roots
-Termites and bacteria
-Lichens
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