As humans, these days we are more likely to spend our time in the city either for social or economic activities. This phenomenon has invited us to perform the large-scale urbanization which is currently in very high rates. Hence, the ecosystem in urban area has been impacted significantly and increase the opportunity of alternating living things characteristics. Environmentally speaking, with the change of climatic factors we have changed our plants into stronger plants.
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Susan C Lambrecht et al., from Department of Biological Sciences of San Jose State University suggested four aspects that started natural selection in world of plants in urban area. The researcher used temperatures, level of carbon dioxide and deposited inorganic nitrogen, and moisture regimes as analog compelling in studying the phenological, morphological and physiological aspect of Crepis Sancta in urban Montpellier, France. The study showed that the plants blossomed slower than rural plant which implies the status of their photosynthesis and they are also getting older slowly.
Ecology in city essentially experiences of higher level of carbon dioxide, temperatures which are resulted from vehicles. The deposition of inorganic pollutants in urban area are bigger than in rural. Those affect the plants in several aspects including enhancing of photosynthesis. It happens because of carbon dioxide and deposited nitrogen are used as fuel for photosynthesis. On the other hand, warmer temperatures can contribute significant impacts for soil properties including respirations and soil water evaporation. These three factors are the major cause in changing the physiological aspect of plants.
This experiment was begun by growing the seeds. The planting aspects including the sand, humus and field soil are important to limit so it can be controlled. Therefore, with equal ratio, Crepis Sancta were watering for every 2 to 3 days. After being grown, researchers commenced phenological, morphological and physiological measurements. They are counting the capitula and the amount of leaves which has more than 2 cm length, and the dried leaves for calculating the nitrogen deposition.
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The research suggested that urban’s ecology provide significant impact in biogeochemical aspects particularly in land. In overall, the study showed data about differences aspect essentially in the size of the leaves. Furthermore, the changing of atmospheric and geological features has contributed to the adaptation process for plants which means they are ready for natural selections.