Latitudinal gradient of species diversity essay
Geographical area hypothesis[ edit ] Another spatial hypothesis is the geographical area hypothesis Terborgh These studies suggest the intensity of species interactions are not correlated with the change in species richness with latitude. Any kind of living organism can be a potential invasive species, including the seeds and eggs of an organism Invasive Species, n.
These fish are mainly sail fin molly, least killifish, and mosquito fish.
Latitudinal gradients of biodiversity: pattern, process, scale, and synthesis
If a disturbance happens within the community and the keystone species disappears, the organization and diversity drastically shifts. Because of the increase of endangered wildlife society now faces several extinctions therefore, to prevent this problem, the government should pass laws or policies that provide greater protection and preservation, provide more information about endangered species, give more publicity to the issue and support charities. Since the industrial and scientific revolutions, the output of agricultural endeavors has increased through science, business, and government regulations. To do this you need to make clear the relationship between DNA replication and the survival of a species. Research is needed to assess the ecological impacts and consequences of this change, but for large parts of the world detailed species inventories are difficult — if not impossible — to obtain. The program is called the Species Survival Plan. Wikipedia, Some of the more rare land dwellers include giant tortoises, marine iguanas, and lava lizards In its simplest terms, biological diversity is the variety of life and its processes, and it includes the variety of living organisms, the genetic differences among them, and the communities and ecosystems in which they occur. Temperature and rainfall has a profound effect on the control of temperate and tropical rainforests. This will hopefully show us how each factor of the environment affects the others. Additionally, species with larger ranges may be more likely to undergo allopatric speciation, which would increase rates of speciation Rosenzweig
The preservation of our surroundings can create new jobs and promote economic efficiency, more so than the jobs which are currently destroying our ecosystem Others object that MDE models so far fail to exclude the role of environment at the population level and in setting domain boundaries, and therefore cannot be considered null models Hawkins and Diniz-Filho ; Hawkins et al.
Invasive or exotic species have altered the Chesapeake Bay region; with both a negative and positive impact. More area in the tropics allows species to have larger ranges, and consequently larger population sizes.
Latitudinal biodiversity gradient define
The program is called the Species Survival Plan. Colwell and Lees called this stochastic phenomenon the mid-domain effect MDE , presented several alternative analytical formulations for one-dimensional MDE expanded by Connolly , and suggested the hypothesis that MDE might contribute to the latitudinal gradient in species richness, together with other explanatory factors considered here, including climatic and historical ones. The technology has been a great tool to identify molecular markers that lead us to the identification on wild species and their origins. It can refer to genetic variation, species variation, or ecosystem variation which seems to be the result of the warm climate and high primary productivity. Data robustness[ edit ] One of the main assumptions about LDGs and patterns in species richness is that the underlying data i. Additionally, many habitats with high species diversity do experience seasonal climates, including many tropical regions that have highly seasonal rainfall Brown and Lomolino The basis of evolution comes from survival of the fittest. One critique of this hypothesis has been that increased species richness over broad spatial scales is not necessarily linked to increased number of individuals, which in turn is not necessarily related to increased productivity. The hypothesis is supported by much recent evidence, in particular the studies of Allen et al. For now the debate over the cause of the latitudinal diversity gradient will continue until a groundbreaking study provides conclusive evidence or there is general consensus that multiple factors contribute to the pattern. What can we do to stop this.
While some ecologists continue to search for the ultimate primary mechanism that causes the latitudinal richness gradient, many ecologists suggest instead this ecological pattern is likely to be generated by several contributory mechanisms Gaston and BlackburnWillig et al.
These tools help us look back and use those genes to improve new cultivars by adding resistance genes.
The generality of the latitudinal diversity gradient[ edit ] An extensive meta-analysis of nearly latitudinal gradients from published literature tested the generality of the latitudinal diversity gradient across different organismal, habitat and regional characteristics .
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