Positive And Negative Effects Of Climate Change

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Plants and animals can grow, survive and reproduce only within a specific range of climates and environments. Earth’s average temperature has risen by 1.5°F over the past century, and scientists predict that it will rise 0.5 to 8.6°F in the next hundred, or so years. Climate change can cause negative effects to the different environments on Earth. It can affect water supplies, agriculture, power and energy, transportation, and even the human race’s health and safety. Phenology is the timing of season activities of animals and plants, and is practically the simplest process to track changes in the ecology of species in response to climate change. Some primary responses of species to recent climate changes are known as “phenological shifts.” …show more content…
These specific organisms have a trait that is known as temperature-dependent sex determination. The microclimate that the embryos are developing in will determine the sex that they will be born as. This specific trait is most common among most reptiles. It always occurs in crocodilians and tuatara, most turtles, and some lizards. The effect of climate change can offset a sex ratio of the specific species with temperature dependencies. As a result, population sex ratios are extremely sensitive to temperature shifts because the smallest change could dramatically alter a species’ population. For example, if the weather is extremely high in a certain nesting area, almost all of the offspring could turn out to be male, with few to none of them being female, or vice versa. This would cause a major decrease in population, and would cause havoc on the food chain that that species is a part of and cause other species’ populations to decrease, as well. Climate change, therefore, has the potential to severely impact Temperature-Dependent reptiles by resulting in populations made up of predominantly one sex. The situations mentioned raise the possibility of phenotypical changes due to the impact of climate on their populations. A study on the species, Chrysemys picta, or painted turtles, shows that the turtles began to nest earlier in the year, due to the increase of …show more content…
The increase causes the shifting of the seasons, in respect to the tree. There have been cases of earlier spring events during the year, and later autumn events. This creates a different process of aging for plants, or otherwise known as senescence. For example, leaf senescence is the cause of autumn leaf color in deciduous trees. In a certain study on poplar trees, there have been evident changes in the timing of these events. Each event of tree’s life is referred to as a phenophase. The study shows that the rising temperatures around poplar trees would delay growth cessation in the autumn, but would accelerate bud development in the spring. This creates a problem considering the unpredictability of weather during the earlier months of spring. For example, the earlier leafing of trees would leave them particularly vulnerable to late frosts, so they would end up dying, and stripping a food source and habitat from some

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