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Impact assessment of local land use on ecological water quality of the Guayas river basin (Ecuador)

(2018) ECOLOGICAL INFORMATICS. 48. p.226-237
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Abstract
Extensive anthropogenic activities including land conversion have been taking place in the Guayas river basin (Ecuador) due to increasing population growth. Land use changes are considered one of the key sources affecting the ecological water quality of the Guayas river basin. Therefore, we investigated the effect of land use on the ecological water quality both within direct vicinity and within a distance of 200 m from the sampling sites. We investigated which of three land use assessment methods (i.e. data retrieved from field protocols, from aerial pictures (Google maps) and from GIS data) is most suitable to quantify the impact of local land use on the ecological water quality and which key environmental variables influence the ecological water quality. To do so, we collected data on macroinvertebrates and environmental variables from 120 sampling sites throughout the river basin during an integrated sampling campaign. The Biological Monitoring Working Party adapted for Colombia (BMWP-Col) was calculated and used to assess the ecological water quality status of the river basin, based on macroinvertebrates. The relation between the BMWP-Col, local land use and other environmental variables was investigated using generalized linear models (GLMs) and sensitivity analyses. Based on multimodel comparison, the ecological water quality was best associated with the land use close to the sampling sites (field protocol, R-2 = 0.93, p < 0.05). Models involving land use assessed using aerial pictures, field protocols and GIS data were associated mainly with hydromorphological variables. However, the models incorporating land use evaluated on a larger spatial scale (i.e. Google maps and GIS maps) were also associated with physicalchemical variables. Although, the land use assessment based on aerial pictures using Google maps" had the best outcome, a combined approach using field observation and aerial pictures can provide comprehensive land use data to the water management and provides the most complete information to define local land use of the sampling sites.
Keywords
Ecological water quality, Macroinvertebrates, Local land use, Biological Monitoring Working Party-Colombia, Generalized linear models, BENTHIC MACROINVERTEBRATE ASSEMBLAGES, SPATIAL SCALE, HABITAT SUITABILITY, MULTIMETRIC INDEX, STREAMS, RESTORATION, HETEROGENEITY, COMMUNITIES, PREDICTIONS, ATTRIBUTES

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Citation

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MLA
Damanik Ambarita, Minar Naomi et al. “Impact Assessment of Local Land Use on Ecological Water Quality of the Guayas River Basin (Ecuador).” ECOLOGICAL INFORMATICS 48 (2018): 226–237. Print.
APA
Damanik Ambarita, M. N., Boets, P., Nguyen, T. H. T., Forio, M. A. E., Everaert, G., Lock, K., Musonge, P. S. L., et al. (2018). Impact assessment of local land use on ecological water quality of the Guayas river basin (Ecuador). ECOLOGICAL INFORMATICS, 48, 226–237.
Chicago author-date
Damanik Ambarita, Minar Naomi, Pieter Boets, Thi Hanh Tien Nguyen, Marie Anne Eurie Forio, Gert Everaert, Koen Lock, Peace Sasha Liz Musonge, et al. 2018. “Impact Assessment of Local Land Use on Ecological Water Quality of the Guayas River Basin (Ecuador).” Ecological Informatics 48: 226–237.
Chicago author-date (all authors)
Damanik Ambarita, Minar Naomi, Pieter Boets, Thi Hanh Tien Nguyen, Marie Anne Eurie Forio, Gert Everaert, Koen Lock, Peace Sasha Liz Musonge, Natalija Suhareva, Elina Bennetsen, Sacha Gobeyn, Long Tuan Ho, Luis Dominguez-Granda, and Peter Goethals. 2018. “Impact Assessment of Local Land Use on Ecological Water Quality of the Guayas River Basin (Ecuador).” Ecological Informatics 48: 226–237.
Vancouver
1.
Damanik Ambarita MN, Boets P, Nguyen THT, Forio MAE, Everaert G, Lock K, et al. Impact assessment of local land use on ecological water quality of the Guayas river basin (Ecuador). ECOLOGICAL INFORMATICS. 2018;48:226–37.
IEEE
[1]
M. N. Damanik Ambarita et al., “Impact assessment of local land use on ecological water quality of the Guayas river basin (Ecuador),” ECOLOGICAL INFORMATICS, vol. 48, pp. 226–237, 2018.
@article{8580501,
  abstract     = {{Extensive anthropogenic activities including land conversion have been taking place in the Guayas river basin (Ecuador) due to increasing population growth. Land use changes are considered one of the key sources affecting the ecological water quality of the Guayas river basin. Therefore, we investigated the effect of land use on the ecological water quality both within direct vicinity and within a distance of 200 m from the sampling sites. We investigated which of three land use assessment methods (i.e. data retrieved from field protocols, from aerial pictures (Google maps) and from GIS data) is most suitable to quantify the impact of local land use on the ecological water quality and which key environmental variables influence the ecological water quality. To do so, we collected data on macroinvertebrates and environmental variables from 120 sampling sites throughout the river basin during an integrated sampling campaign. The Biological Monitoring Working Party adapted for Colombia (BMWP-Col) was calculated and used to assess the ecological water quality status of the river basin, based on macroinvertebrates. The relation between the BMWP-Col, local land use and other environmental variables was investigated using generalized linear models (GLMs) and sensitivity analyses. Based on multimodel comparison, the ecological water quality was best associated with the land use close to the sampling sites (field protocol, R-2 = 0.93, p < 0.05). Models involving land use assessed using aerial pictures, field protocols and GIS data were associated mainly with hydromorphological variables. However, the models incorporating land use evaluated on a larger spatial scale (i.e. Google maps and GIS maps) were also associated with physicalchemical variables. Although, the land use assessment based on aerial pictures using Google maps" had the best outcome, a combined approach using field observation and aerial pictures can provide comprehensive land use data to the water management and provides the most complete information to define local land use of the sampling sites.}},
  author       = {{Damanik Ambarita, Minar Naomi and Boets, Pieter and Nguyen, Thi Hanh Tien and Forio, Marie Anne Eurie and Everaert, Gert and Lock, Koen and Musonge, Peace Sasha Liz and Suhareva, Natalija and Bennetsen, Elina and Gobeyn, Sacha and Ho, Long Tuan and Dominguez-Granda, Luis and Goethals, Peter}},
  issn         = {{1574-9541}},
  journal      = {{ECOLOGICAL INFORMATICS}},
  keywords     = {{Ecological water quality,Macroinvertebrates,Local land use,Biological Monitoring Working Party-Colombia,Generalized linear models,BENTHIC MACROINVERTEBRATE ASSEMBLAGES,SPATIAL SCALE,HABITAT SUITABILITY,MULTIMETRIC INDEX,STREAMS,RESTORATION,HETEROGENEITY,COMMUNITIES,PREDICTIONS,ATTRIBUTES}},
  language     = {{eng}},
  pages        = {{226--237}},
  title        = {{Impact assessment of local land use on ecological water quality of the Guayas river basin (Ecuador)}},
  url          = {{http://dx.doi.org/10.1016/j.ecoinf.2018.08.009}},
  volume       = {{48}},
  year         = {{2018}},
}

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