Abstract
Abstract: This paper systematically assessed trends of aquatic ecology publications related to the urbanization growth during three decades (1990-2010) in Santa Catarina Island. The study was carried out in fifteen watersheds of Santa Catarina Island, located in Florianópolis city, Southern Brazil. Geoprocessing and scientometry tools were used to analyze the evolution of urban areas and publications, respectively, related to these watersheds during three decades. The QGIS software was used to delimitate the catchment area of each watershed and contrast those areas with the built-up area for each decade, therefore obtaining the percentage of area covered with buildings and impervious surfaces. A gradient was created allowing the classification of the watersheds related to the urbanized area percentage, resulting in 5 groups of urbanization (0-5%; 5-10%; 10-20%; 20-30%; >30% of urbanization). Aquatic ecology publications were obtained from several scientific and academic databases and used in the scientometric analysis. The number of publications by decade, document type, knowledge area and watershed of study were recorded. Growth of urbanized areas was mainly evidenced since the 2000s and showed a moderate positive relationship with the number of publications in ecology of aquatic systems in the Santa Catarina Island during the same period. However, differences between watersheds were observed, since the most urbanized watersheds were not necessarily the ones with the largest number of publications. Urban gradient evidenced in Santa Catarina Island offers an opportunity to investigate the impacts of human disturbance on aquatic ecology, water quality and stream communities. Furthermore, the low number of research projects might be contributing to the decline in biological integrity due to the lack of knowledge for evaluation and management in these environments.
Highlights
Freshwater systems on subtropical islands are undergoing substantial alteration as urbanization increases, and these watersheds become different from native stream communities (Brasher, 2003)
Geoprocessing and scientometry tools were used to analyze the evolution of urban areas and publications, respectively, related to these watersheds during three decades
This paper aims to assess, systematically, the trends of aquatic ecology publications associated with the urbanization evolution during three decades (1990, 2000 and 2010) in Santa Catarina Island, using geoprocessing and scientometry tools
Summary
Freshwater systems on subtropical islands are undergoing substantial alteration as urbanization increases, and these watersheds become different from native stream communities (Brasher, 2003). Changes in populations and associated socioeconomic factors drive the intensity, extent, and stage of urban development, and may affect freshwater ecosystems on a temporal-spatial scale (Parr et al, 2016). Uncontrolled urbanization has the potential to affect ecosystem functions of aquatic ecosystems by altering the hydrologic regime (runoff), habitat loss (riparian cover removal), and physicochemical characteristics (inputs of nutrients and pollutants) (Walsh et al, 2005; Parr et al, 2016), threatening the environmental health (Cooper et al, 2013; Liao & Huang, 2013). Effective water quality management of streams in urbanized watersheds requires the identification of the most important contributors to changes in the environment, such as sources of pollutants (Hatt et al, 2004). Urban ecological studies have investigated both impacts of urban development on native ecosystems and the dynamics of urban environments themselves as ecosystems (Grimm et al, 2000)
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