Negative impacts by tourism on the environment may be as a result of infrastructure; in order for tourism to thrive, it demands infrastructure including roads, train tracks airports etc. Construction of these important amenities leads to significant alterations of the ecosystems in which they are constructed through destruction of flora and disruption of fauna. Development of other supporting infrastructure e.g. hotels and other accommodations leads to great sewerage pollution for water sources which can have a huge impact especially in areas where there are coral reefs (Burchel & Listokin 1975).
The case is particularly significant owing to the fact that the most significant tourist activity happens in areas of high biodiversity. Tourism is also likely to cause depletion of resources, UNEP (2005) found that tourism consumes as much energy, annually as the energy consumed in Japan and consumes 10 million cubic meters of water over one year. This shows that there is great possibility of tourism concentrating local resources use in only small areas thus undermining resource management systems put in place locally (UNEP and CI, 2003).
Every day activities related to tourism may also lead to negative impacts on biodiversity, particularly on coral reefs which may be damaged by boats, and business people who sell pieces of the reefs as souvenirs to tourists. A lot of solid waste is generated from tourism related activities UN & Cl (2003) estimate that tourism generates a total of 35 million tonnes of waste every year. Activities related to tourism including transport, accommodation among others account to 4 to 6% of all carbon dioxide emissions in the world these emissions are equivalent to the total emissions produced by Canada, Brazil and South Korea combined (UNWTO et al. 2007). This is a significant contribution to climate change Balancing interests while planning on the impacts of tourism is delicate as different stakeholders have different interests which are often completely opposite each other.
It is for this reason that generalized planning would not work in the case of tourism. Yet when interests are as divergent as they are, consensus on specific aspects of the plans might be difficult. There, however, are instances where groups with interests in different areas have some overlapping concerns. These make planning easier as commonalities can be found (Cizmar and Lizjak, 2007). Negative impacts of tourism need to be reduced to ensure that the industry is sustainable. Sustainability is important in order to sustain the positive impact tourism has on communities.
The positive impacts include raising revenue for the communities in which tourism related activities take place through providing opportunities for businesses, these businesses lead to job creation as well as spurring investment and supporting of services in the locality. Since it is relatively labour intensive, tourism employs many youth and women while not being import intensive. With good linkages between governments and the private sector, tourism can yield a lot of pro poor benefits, while the private sector can provide the requisite investments, the government may adapt their licensing, concessioning and marketing policies to support the said policies (ODI, 2005).
Tourism also has the potential of raising awareness on matters pertaining to conservation among members of the surrounding communities. They would be happy to undertake conservation activities as a way of ensuring that the benefits they receive from tourism are sustained. Visitors with the help of proper systems for interpretation can also learn conservation. The sustained activities of locals as well as those of visitors on conservation in all tourist destinations would greatly contribute to raising the profile of conservation activities on the psyche of communities, both locally and at a national level.
Another reason why negative impacts from tourism should be reduced is in order to strengthen appreciation of culture.
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