Standard Gauge Railway

Impact Of Standard Gauge Railway (Sgr) on the Nairobi National Park Ecosystem.

Impact of Standard Gauge Railway: One of the most unbelievably safeguarded regions in the world is Nairobi National Park. It is situated only a few kilometres away from the city centre of Nairobi in support of a complete sort of savannah wildlife: lions, black rhinos, buffalo, giraffes, cheetahs, and more than 500 types of birds amidst urban infrastructure.

This is what has made the park especially susceptible to massive development initiatives, as this is a rare combination of wildlife and a capital city. One of the most important of them is the Standard Gauge Railway (SGR) in Kenya, one of the showcase transport corridors in the country linking Mombasa to Nairobi and further to Naivasha. Although the SGR has brought significant economic and logistical advantages, its construction and operation processes have real effects on the Nairobi National Park ecosystem.

History of the Standard Gauge Railway and Its Track.

The Standard Gauge Railway was meant to modernise the Kenyan transport system and to bring down the freight rates and the congestion on the roads. The Nairobi-Mombasa line came into operation in 2017 and has been extended to Naivasha.

One of the most sensitive parts of the SGR is located in the southern border area of Nairobi National Park, which is raised to a great extent on viaducts. The reason behind this alignment is that it does not allow an in-depth penetration into the park and still makes the engineering viable and land acquisition minimal in the densely populated urban centres. In spite of mitigation planning, the railway is too close to the park, and thus, there are always ecological concerns.

Habitat Fragmentation and Change in Landscape.

Habitat fragmentation can be considered to be one of the most direct effects of the SGR on the Nairobi National Park. Livestock ecosystems also depend on interconnected flora with free movement of animals to find food, water and mating partners. The railway line, plus the existing roads, fences and urban developments, is yet another linear element in a limited space.

The SGR, though being high in major parts, construction activities changed the vegetation cover, compacted soils, and natural drainage patterns. Construction camps, access roads, and material storage facilities also led to a further decrease in the quality of the habitat during the building period.

These alterations cause a reduction in viable wildlife space, especially in dispersal areas of the park where it is located to the south.

Impacts on Movement of Wildlife and Corridors.

In the past, Nairobi National Park was an extension of a greater migratory ecosystem to the south in the Athi-Kapiti plains. Although urbanisation has already taken over much of this dispersal area, the remaining movement corridors are very important in the preservation of genetic diversity and ecological balance.

With the SGR corridor, fencing and industrial development, animal movement has been restricted to even larger mammals, including the buffalo, giraffes and even antelope species. Although the design is raised to enable some of the animals to go under, not all animals adapt equally. Timid or possessive creatures might just stay away from the place because of the noise, vibration and human movement.

In cases of predators like lions and cheetahs, limited movement may enhance competition in the park and the chances of human-wildlife conflict in instances where animals are compelled to the periphery of settlement.

Noise, Vibration, and Disturbance.

The activities of the railway cause long-term noise and vibration, especially when freights are passing. Although wildlife may be able to adapt to some disturbances in the background with time, sudden or irregular sounds may arouse stressful reactions.

Research and observations along the Nairobi National Park have shown that certain species change their behaviour along the rail line and do not dare to feed or have a rest in the same areas. The avian species nesting along the line can face compromised breeding successes since they are disturbed, as well as grazing animals that might change their activity patterns to avoid the area in which the railroad runs.

Despite the localised nature of these effects, they add to the already existing disturbances of the cities, like road traffic, aircraft noise and industrial activity.

Effects on the Environment and Water Pollution.

SGR has brought about new sources of environmental risk to the ecosystem of the park. These include:

• Particulate construction pollution.
• Maintenance risks of oil and fuel pollution.
• The build-up of solid waste along the access routes.
• Train operations and service facilities have light pollution.

Although the environment management plans exist, these plans should be enforced and monitored over a long period to avoid deterioration over a long period. Any minor changes in pollution can impact even vulnerable habitats, in particular wetlands and seasonal watercourses in the park.

Measures of mitigation and design interventions.

As the Nairobi National Park is ecologically delicate, several mitigation measures were involved in the SGR design and construction:

• Construct high viaducts so that animals can move under the railroad.
• Minimised fencing in front of the park to minimise the number of collisions.
• EIA on routes with guidance on environmental studies.
• Moderated building schedules to minimise peak disruption.
• Moreover, the partnership with the Kenya Wildlife Service (KWS) was used to make sure that the construction procedures were wildlife-sensitive.

Although this led to a decrease in the direct damages, conservationists state that the cumulative effects of mitigation combined with other developments around the park cannot be fully counteracted.

Other Infrastructure Pressures

The influence of the SGR cannot be considered on its own. Nairobi National Park is already under pressure due to highways, pipelines, power lines, industrial areas and residential developments. The railway is part of a larger trend of encroachment of infrastructure, which is increasingly converting the park into an ecological island.

This compound effect forms part of the biggest long-term threats. Even the infrastructure that is well mitigated may lead to stress on the ecosystem when overlaid on an already limited landscape.

Economic Goods vs Ecological Bads.

Some of the national benefits that the SGR has provided are increased freight flow speed, a decrease in congestion of the roads, and economic development. Nevertheless, Nairobi National Park on a Kenya safari is one of the natural resources of outstanding international importance.

One of the main challenges is stabilising the ecological preservation as well as economic development. Although the SGR illustrates how it is possible to design infrastructure in an environmentally friendly manner, it also points out the shortcomings of mitigation in a very urbanised conservation environment.

Conclusion

The Standard Gauge Railway has transformed the transport system of Kenya and has led to national development, yet the impact it has on the Nairobi National Park has been unquestionable, with ecological implications. The SGR has caused an additional layer of complexity to the already sensitive urban ecosystem in the park, with habitat fragmentation and immobility, noise disruption, and cumulative infrastructure pressure.