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dc.contributor.author
Williams Subiza, Emilio Adolfo
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dc.contributor.author
Brand, Cecilia
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dc.contributor.author
Miserendino, Maria Laura
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dc.date.available
2023-09-18T18:39:47Z
dc.date.issued
2022-10
dc.identifier.citation
Williams Subiza, Emilio Adolfo; Brand, Cecilia; Miserendino, Maria Laura; Compositional shifts in freshwater macroinvertebrate communities over 30 years of urbanization; Elsevier Science; Ecological Engineering; 183; 10-2022; 1-11
dc.identifier.issn
0925-8574
dc.identifier.uri
http://hdl.handle.net/11336/211901
dc.description.abstract
Urban development has put great pressures on lotic environments, as human needs have often been prioritized over ecosystem health. Typical interventions found in urban watercourses include channelization and straightening, clearance of riparian vegetation, and the discharge of wastewaters, among others. Such environmental changes often have major effects on aquatic biodiversity. The main goal of this study was to investigate how freshwater macroinvertebrate assemblages responded to nearly three decades of population growth and infrastructure development in the cities of Esquel and Trevelin (Patagonia, Argentina). Data from two field surveys was used to make comparisons; the first one was conducted in 1990–91, and the second one, in 2017–18. We found significant differences between surveys in several water quality variables, highlighted by an increase in conductivity and a decrease in oxygen availability. Sites affected by channelization presented lower diversity and abundance of mayflies (Ephemeroptera) and stoneflies (Plecoptera), likely due to alteration of the physical habitat and riparian vegetation. Similarly, sites located downstream of wastewater treatment discharges exhibited impoverished communities dominated by stressor-resistant taxa (e.g., Chironomidae). Statistical analyses showed that temporal dissimilarities between sampling sites were best explained by taxa losses, and that these changes were driven by an increase in water conductivity and a decrease in dissolved oxygen. Our findings show a pattern of ecological degradation that is all too common in urban streams. In addition, pressure on lotic ecosystems is only expected to increase due to changes in thermal and precipitation regimes, and increases in human demand for freshwater. Therefore, we provide a series of measures that could contribute to improve stream health and mitigate common urbanization-driven impacts.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
BETA DIVERSITY
dc.subject
CHANNELIZATION
dc.subject
INTERVENTIONS
dc.subject
STRESSORS
dc.subject
WWTP
dc.subject.classification
Ecología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Compositional shifts in freshwater macroinvertebrate communities over 30 years of urbanization
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-06-29T10:23:45Z
dc.identifier.eissn
1872-6992
dc.journal.volume
183
dc.journal.pagination
1-11
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Williams Subiza, Emilio Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Centro de Investigación Esquel de Montaña y Estepa Patagónica. Universidad Nacional de la Patagonia "San Juan Bosco". Centro de Investigación Esquel de Montaña y Estepa Patagónica; Argentina
dc.description.fil
Fil: Brand, Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Centro de Investigación Esquel de Montaña y Estepa Patagónica. Universidad Nacional de la Patagonia "San Juan Bosco". Centro de Investigación Esquel de Montaña y Estepa Patagónica; Argentina
dc.description.fil
Fil: Miserendino, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Centro de Investigación Esquel de Montaña y Estepa Patagónica. Universidad Nacional de la Patagonia "San Juan Bosco". Centro de Investigación Esquel de Montaña y Estepa Patagónica; Argentina
dc.journal.title
Ecological Engineering
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0925857422001999
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.ecoleng.2022.106738
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