“…Yosemite NP reduced greenhouse gas emissions per visitor 10% from 2008 to 2011 through energy conservation, energy-efficient lighting, solar energy, recycling, water conservation, and public transportation (Villalba et al 2013). Greenhouse gas emissions inventories of 18 national parks showed that visitor cars produced 75% of park emissions (Steuer 2010). Yosemite NP helped to set up a regular bus route from the nearest Amtrak rail station to Yosemite Valley ( Figure 5) and shuttle buses within the park that (van Mantgem et al 2016).…”
Conflict of interest declaration. The author declares that he has no conflict of interest to disclose. Disclaimer. This publication represents the views of the author and does not necessarily represent the views of the US Government.
“…Yosemite NP reduced greenhouse gas emissions per visitor 10% from 2008 to 2011 through energy conservation, energy-efficient lighting, solar energy, recycling, water conservation, and public transportation (Villalba et al 2013). Greenhouse gas emissions inventories of 18 national parks showed that visitor cars produced 75% of park emissions (Steuer 2010). Yosemite NP helped to set up a regular bus route from the nearest Amtrak rail station to Yosemite Valley ( Figure 5) and shuttle buses within the park that (van Mantgem et al 2016).…”
Conflict of interest declaration. The author declares that he has no conflict of interest to disclose. Disclaimer. This publication represents the views of the author and does not necessarily represent the views of the US Government.
“…Now, BRCA hosts more than 1.5 million visitors annually (National Park Service, 2021). The high volume of visitors inevitably has an impact on the park and its ecosystems (Call et al 1981), and one of the main negative effects may be the emissions from vehicles that travel on roads through the park (Steuer 2010). Assessing the human impact on biological communities in BRCA will be critical for meeting the fundamental purpose of a national park, i.e., conserving the scenery and the natural and historic objects for the future.…”
National parks and other federally designated natural areas play critical roles in preserving unique habitats, communities, and biodiversity. However, in the United States, it is estimated that 80–90% of species diversity in national parks is presently unknown. Therefore, contemporary biodiversity inventories are critical for conservation, management and establishing baselines for future comparisons. Ongoing efforts to characterize lichen diversity highlight diverse and robust communities in a number of national parks in the USA. In arid regions of the western USA facing ecological transformations, lichens can play a pivotal role for monitoring these changes. Lichen diversity in Bryce Canyon National Park (BRCA) in southern Utah, USA remains nearly completely uncharacterized, despite nearly 100 years as a federally protected area. Our study aims to provide a critical perspective into the lichen diversity of BRCA. Using a metabarcoding community sampling approach, we documented 215 candidate lichen-forming fungal species distributed across ecologically distinct sites in BRCA. At each sampled site, species richness ranged from 104 to 133 species, with no more than 20% shared species among the three sites. The limited overlap between collection sites suggests that BRCA harbors greater diversity than initially thought. We document a number of sensitive lichens, particularly Usnea spp. and Ramalina sinensis, that should be monitored as air pollution, land use, and impacts of climate change affect biological communities in the park. The inventory also includes unknown species and other species that have not been documented in the western USA. While our DNA-based inventory highlights strikingly rich lichen diversity, future voucher-based collections will be essential for robust taxonomic determinations.
“…This is the case of national parks, where there are established land areas for protection, maintaining habitat and in turn biodiversity [6] [7]. Trees and other flora within parks sequester carbon [8]. Visitors to parks are educated about why preserving nature is important, which in turn can help them to make informed decisions in their lives regarding their impact on the environment [9].…”
Tortuguero National Park located on the Caribbean coast of Costa Rica is only accessible by boat or air and attracts an average of 130,000 visitors yearly. The main activity of the park is the turtle nesting and hatching along the beaches as well as the observation of wildlife in the channel system. This makes it important to study the CO 2 emitted by the tours operating in the park. To calculate these emissions researchers gathered data on engine type, horsepower and duration of idle while boats waited to buy tickets at the park entrance. The study found that tour operators emitted a minimum of 5.5 tons of CO 2 per year into the atmosphere and water. It is likely that the park is more polluted than immediately evident.
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