Community Ecology

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Genetics of Community Ecology ,[object Object]

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Biodiversity in Motion 1 Biodiversity in MotionAntoine CrowderJennifer Ott ENV 300 Environmental Biology July 27, 2014 In an ever changing world it benefits all to understand those changes affecting all areas of life in a rapidly expanding planet. Biodiversity is the variation that exists in the natural world at all levels of biological organization all organisms in a defined area, all of their variations and all of their interactions with each other and with the physical environment (Bandopadhyay, Yakoob, Sunny 2010). This paper shall explain Biological evolution, competition and ecological niches, food webs, geography, human population expansion and how humans can help conservationist with the many ecosystems in the world. The Measurement of Biodiversity is utilizes a variety of objective measures which have been established in order to empirically measure biodiversity Bandopadhyay, Yakoob, Sunny 2010). Each evaluation of biodiversity pertains to a particular use of the information. For practical conservationists, dimensions should consist of a quantification of principles that are commonly-shared among regionally impacted organisms, such as people. For others, a more financially defensible meaning should allow the guaranteeing of ongoing opportunities for both adaptation and future use by people, guaranteeing ecological durability. As a side impact, scientists claim that this evaluation is likely to be associated with the wide range of genetics. Since it cannot always be said which genetics are more likely to confirm valuable, the best option for conservationist is to guarantee the determination of as many genetics as possible. For ecologists, this latter strategy is sometimes regarded too limit as it prevents ecological sequence. Environmental Conservation Maintaining existing ecosystems benefits all life forms mainly because there is a clear relationship between the conservation of biological Diversity and the discovery of new biological resources. The relatively small number of developed plant species currently being cultivated have been largely researched and selected for breeding. But there are many other plants presently being ignored and under-utilized food crops which have the potential to become important crops in the future. Local tribes usually use the crops and have knowledge of the uses of wild plants which makes them a good source for ideas on developing new plant products. Plants and animals are vital and undoubtedly an important part of the cultural life of humans. Human cultures have thrived and evolved over time with their environment and biological diversity has proven to impart a distinctive cultural identity to different communities. Areas needing immediate intervention and protection for conservation of biodiversity are called Biodiversity Hot Spots. The IUCN and WWF are among ...

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Answer (6) THREE WAYS HUMAN HAVE NEGATIVELY IMPACTED BIODIVERSITY :- (A) Population:- Growth of the human population is a major factor affecting the environment. Simply put, overpopulation means that there are more people than there are resources to meet their needs. Almost all the environmental problems we face today can be traced back to the increase in population in the world. The human population is at 6 billion; with an annual global growth rate of 1.8%, three more people are added to the earth every second. (B) Habitat Removal and Alteration :- Habitat fragmentation is the loss and subdivision of a habitat and the corresponding increase in other habitats in the landscape. Conversion of habitat represents the greatest threat to biodiversity, since almost all human activities cause alterations to the natural environment to a greater or lesser degree. Almost 10% of Canada\'s ecoregions are estimated to be at high risk for loss of biodiversity because of habitat removal. (C) Overharvesting/Overexploitation :- Overharvesting has had the greatest effect on biodiversity. In fact, overharvesting and habitat loss often occur simultaneously, as removal of an organism from its environment can have irreversible impacts on the environment itself. Humans have historically exploited plant and animal species in order to maximize short-term profit, at the expense of sustainability of the species or population. This exploitation follows a predictable pattern: initially, a species harvested from the wild can turn a substantial profit, encouraging more people to get involved in its extraction. This increased competition encourages the development of more large-scale and efficient methods of extraction, which inevitably deplete the resource. (D) Pollution :- Toxic discharges: This includes metals, organic chemicals, and suspended sediments usually found in industrial and municipal effluents that are discharged directly into waterbodies. Toxic discharges can inversely impact the biota (living organisms) in an ecosystem by killing them, weakening them, or affecting their ability to carry out essential biological functions (feeding, reproducing, etc.). bacterial contamination: For example, fecal coliforms that come from human waste are found in municipal effluent discharges. Potable water is treated to destroy fecal coliforms which can make people ill if ingested. nutrient buildup: Most concern are phosphorus and nitrogen which often originate as run-off from fertilizers applied on agricultural fields. These nutrients, naturally present in very low concentrations, stimulate rapid growth of algae and aquatic plants, ultimately limiting the amount of oxygen and light available to other organisms in the ecosystem. As well, aquatic environments can be degraded by habitat alteration and presence of invasive species. Answer (7); SPECIES DIVERSITY This refers to the variety of species within a particular region. The number of species in a region is a measure for such.

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