Spatiotemporal changes in land cover land use in protected areas of Serra da Mantiqueira, Southeastern Brazil

Silva, Ismael Aparecido da; Dupas, Francisco Antônio; Costa, Carlos Eduardo; Medeiros, Grasiela de Oliveira Rodrigues; Souza, André Rodrigues de

doi:10.1016/j.envc.2021.100195

Cited by 4 publications

(2 citation statements)

References 34 publications

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“…Factors that affect the criticality of land in protected areas and buffer areas are land cover (canopy density percentage) (da Silva et al, 2021), slope, erosion hazard level, land productivity and management (Nuralamsyah and Marselina, 2023). As for cultivation areas, five factors influence watershed physical parameters, namely slope class, level of erosion hazard, management, productivity, and rock outcrops (Mey et al, 2020) The assessment of the percentage of critical land in the Wanggu Watershed is based on the results of compiling critical land spatial data, so the critical land area is then a percentage between the critical land level and the Wanggu Watershed area, as shown in Table 6 and Figure 2.…”

Section: Critical Landmentioning

confidence: 99%

Performance of Wanggu Watershed Management Based on Land Indicators

2023

indones. j. env. man. sus.

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Based on the study, it was found that the land in the Wanggu Watershed is highly dynamic due to community activities such as agriculture, plantations, forestry, and settlement development. This can affect the performance and carrying capacity of the land in the watershed. The purpose of study was to evaluate the performance of watershed management and analyze the land-carrying capacity based on indicators of land. The parameters analyzed were the percentage of critical land area, the percentage of vegetation cover, and the erosion index. To obtain the data needed for the study, both primary and secondary data were used. Primary data was obtained through the overlay of the base map to obtain a map of critical land, making land cover maps, and calculating erosion prediction and carrying capacity analysis of the Wanggu Watershed. Secondary data was obtained from related agencies in the form of critical land data, land cover data, literature, policy documents, and study reports that are relevant to watershed management performance. The results of the study showed that the percentage of critical and somewhat critical land area in the Wanggu Watershed is 16.07 percent, which means that this value still qualifies as high category critical land recovery. The percentage of vegetation cover, especially forest cover, is 27.10 percent, which is still in bad condition. The average erosion index value is 2.00, which is high. Based on these three parameters of land condition indicators in the Wanggu Watershed, the performance of watershed management has a poor land carrying capacity category with a value of 50. Overall, the study highlights the need for better management and conservation of the land in the Wanggu Watershed to improve its performance and carrying capacity.

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Section: Critical Landmentioning

confidence: 99%

Performance of Wanggu Watershed Management Based on Land Indicators

2023

indones. j. env. man. sus.

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“…For example, Bradley et al (2020) recorded 80 different bioactive compounds in freshwater samples from five PAs in the USA. Sources of threats to water systems in PAs may be diverse, such as visitation (Weissinger et al 2018), agriculture and land conversion in surrounding areas (Battaglin et al 2016, Silva et al 2021), which directly or indirectly influence the watershed. Therefore, assessing the risks to streams inside PAs is key to improving the effectiveness of PAs at protecting freshwater biota.…”

Section: Introductionmentioning

confidence: 99%

Terrestrial protected areas do not fully shield their streams from exogenous stressors

Mollmann

Santos²,

Fernandes³

et al. 2022

Envir. Conserv.

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Summary Protected areas (PAs) represent a powerful refuge for maintaining and safeguarding biodiversity. Generally, PAs are delineated to protect terrestrial taxa, providing incidental protection to the aquatic ecosystems within their borders. Here, we compare water quality within PAs and non-PAs in southern Brazil, encompassing remnants of the Atlantic Forest biome, to assess whether PAs serve as a buffer from external pressures for aquatic ecosystems within their boundaries. In addition to physicochemical and microbiological water parameters, we analysed 147 pesticide and 31 pharmaceutical compounds in water samples from 33 sites within and outside PAs. The water quality did not differ between PAs and non-PAs but indicated clear pollution from sewage discharges. We found 19 pesticides and five pharmaceuticals in streams within the study area. We detected pesticides in all sampling sites, with the herbicide 2,4-dichlorophenoxyacetic acid present in 91% of them. Our data show that PAs are insufficient means to mitigate the impacts stemming from their catchments, and the running water that reaches their domains already shows signs of anthropogenic interference, which may affect aquatic biodiversity. Protection and management measures require consideration of the whole watershed to protect freshwater habitats and biota.

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