This was proposed by Tansley in According to this, there is a particular climax community for a region called climactic-climax community. However, other factors can prevent the community from reaching this stage. For example, consider a community that has been affected by a road construction project.
It is also possible that an an entirely new community can get established, that is vastly different from the expected climactic-climax. Since the overriding influence was of humans, the climax is called anthropogenic climax.
Different climaxes, based on different factors having an overriding influence, have thus been proposed. This was an entirely new concept proposed by Whittaker in According to him, the climax community was controlled by all environmental factors equally. Therefore, no one climax is established in isolation.
A series of climax communities are established, parallel to each other depending on the changing environmental gradients. I leave that to you. However, I would like to share what I feel about this debate. As I have repeatedly written before in my posts, nature is hopeless complex.
It involves multiple dimensions and all resulting interactions cannot be perceived by humans. Considering this multidimensional aspect of nature, I agree with the polyclimax theory as far as saying that many different factors can influence the occurrence of the climax community and its composition. There will also be some factors more dominant than others in a given area.
However, it is also important to understand that communities never occur in isolation. There is always a gradual change from one community to another. Therefore, in a given region with changing communities, the environmental factors will also change accordingly. This will also have an impact on the resulting community composition. Different community structures based on different environmental parameters can occur parallel to each other as these conditions gradually change from one to another.
For example, a community of trees at a particular elevation will gradually change into another community composition as the elevation changes. Along with this change in elevation, temperature and soil conditions will also change. So, I believe in a combination of polyclimax theory and climax-pattern hypothesis weird, I know. Usually found sitting with a good book, nibbling on a piece of dark chocolate.
Always ready for a good story. View all posts by Saurab Babu. You are commenting using your WordPress. You are commenting using your Google account. You are commenting using your Twitter account. For that reason, climb less communities and nature are fairly, fairly rare. What is the name for large geographic areas with similar climax communities? Why are elementary reactions involving three or more reactants very uncommon… Why are the secretions of the male reproductive glands so important to sperm… Explain why autopolyploids are usually sterile, whereas allopolyploids are o… Why are the lanthanoid elements not found in nature in their elemental forms… Explain the advantage that populations of sexually reproducing organisms hav… Problem After fires destroyed much of Yellowstone Nationa….
View Full Video Already have an account? Alexander C. Problem 9 Easy Difficulty Why are true climax communities rare? Answer View Answer. Discussion You must be signed in to discuss. Top Biology Educators MD. Maria D. Julie G. Millikin University. Matthew B. Amherst College. Brooke T. Biology Bootcamp Lectures Elements and Their Atoms In chemistry and physics, ….
The Elements of Life In biology, the elements o…. Recommended Videos Over time, more and more soil particles accumulate, and grasses, then shrubs, then trees become the dominant plant life, until you have a large forest of beeches and maples.
This is the general—and admittedly simplified—idea of succession, and this large forest and all the critters that call it home is the climax community. A climax community can take a very long time to develop and will vary based on climate—for example, a desert versus a rainforest. Everything in the climax community is stable and balanced. The niches are filled. The species are consistent in kind and number.
The overall biomass stays about the same. And, it will remain this way, so the theory goes, until some event disrupts it. This could be a natural disaster, like a major fire, or human interference. After that disruption, the ecosystem will undergo succession again until it reaches its climax again. From the s, the idea of ecological climaxes was especially developed by botanist Frederic Clements, who theorized that an ecosystem goes through a kind of fixed pattern of development culminating in a climax community.
Most modern ecologists, however, understand ecosystems as being much more complex and dynamic, with successions able to occur even amid apparent stability. Climax community is especially seen in the context of general biology and ecology education.
It may be used, for example, by a high-school teacher or in an early college textbook. But as noted, current ecological understanding largely rejects any idealized, predetermined climax community.
Still, the notion of a climax community remains a common, often useful way to understand how ecosystems develop and change, and how their species interact. WOTD psammosere: an ecological succession initiated on sand, most commonly found on sand dunes.
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