Navegando por Assunto "Protected areas"

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Artigo
Assessing the potential of acoustic indices for protected area monitoring in the Serra do Cipó National Park, Brazil
(Ecological Indicators, 2021) Campos, Ivan Braga; Fewster, Rachel; Truskinger, Anthony; Towsey, Michael; Roe, Paul; Vasques Filho, Demival; Lee, Willian; Gaskett, Anne
Protected areas (PAs) monitoring is a technical bottleneck that limits the implementation of decision-making processes for natural resource and wildlife management. Recent methodological advances make passive acous tic monitoring and associated acoustic index analysis an increasingly suitable method for PAs monitoring. Acoustic indices are mathematical filters that can provide standardised comparative information about the acoustic energy, which can be applied to compare communities. In this study we test whether acoustic indices are sufficiently sensitive to detect differences in the soundscape within each of the four seasons between a PA (the Serra do Cipó National Park, Brazil) and a surrounding farmland area. Statistical analysis of results from 12 acoustic indices is used to identify which of 20 acoustic regions, defined by frequency range and time period, present the greatest differences between the two sites. The soundscapes of the two sites differed most in autumn within the acoustic region 6, representing 05:30 – 09:00am and a range of 0.988–3.609 kHz. This acoustic region exhibited significant differences for all the 12 indices tested. Visual examination of 65 long-duration false-colour (LDFC) spectrograms resulted in the selection of 865 (from 1365) sound files with acoustic events within the range of acoustic region 6. Sonotype analysis of the 865 files showed that the soundscape outside the park is strongly influenced by human activity, with domestic animals rare in the park soundscape (1% of the sound files), but very common in the surrounding farmland environment (63% of the sound files). The main goal of monitoring programmes detecting biodiversity trends across space and time, which is here achieved via passive acoustic monitoring and acoustic indices. This confirms the utility of the techniques used here for PA monitoring, especially for detecting trends in anthropogenic disturbance, which is a common threat to natural habitats in parks and reserves in the tropics.
Artigo
A Review on Tourism Carrying Capacity Assessment and a Proposal for Its Application on Geological Sites
(2023-02-20) Santos, Priscila L. A.; Brilha, José
Geoconservation consists of the selection and conservation of geodiversity elements that have significant heritage value. The management of geological sites is based on specific procedures to ensure public use and minimize adverse impacts. The evaluation of the carrying capacity of geological sites is a management tool that helps to define the acceptable limits of visitation, without causing significant impacts on the integrity of these sites. This work presents a review of the carrying capacity concept and the most common methods used to assess the carrying capacity in tourist destinations. Based on this review and analysis of the advantages and disadvantages of existing methods, this work presents a method that defines a set of actions for management and calculation of the number of visitors recommended for geological sites, based on specific geoindicators for each type of site.