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. 2016 Apr 21;33(4):213–234. doi: 10.5511/plantbiotechnology.16.0219a

Figure 2. Pattern diagram of niche formation in ecological optimum. Example of the competition between vegetation A (orange) and B (blue) with closely situated physiological optima (red dashed line). A and B grow with similar physiological condition in monoculture (orange and blue dashed line, respectively). A is supposed to be stronger than B for resource competition at physiological optimum range, though compete poorly at marginal tolerance conditions. As the result of competitive interaction, ecological optimum of A is confined in narrower range (orange solid line), while that of B is displaced and divided into 2 separate ranges (blue solid lines). Other typologies of ecological niches exist in between, including asymmetric deformation. Each niche distribution is not necessary normal distribution but generally unimodal.

Figure 2. Pattern diagram of niche formation in ecological optimum. Example of the competition between vegetation A (orange) and B (blue) with closely situated physiological optima (red dashed line). A and B grow with similar physiological condition in monoculture (orange and blue dashed line, respectively). A is supposed to be stronger than B for resource competition at physiological optimum range, though compete poorly at marginal tolerance conditions. As the result of competitive interaction, ecological optimum of A is confined in narrower range (orange solid line), while that of B is displaced and divided into 2 separate ranges (blue solid lines). Other typologies of ecological niches exist in between, including asymmetric deformation. Each niche distribution is not necessary normal distribution but generally unimodal.