Integrating multiple lines of evidence to assess freshwater ecosystem health in a tropical river basin

Chancay, Juseth E.; Lucas-Solis, Oscar; Alvear-S, Daniela; Martínez-R, Dayana; Mena, Gisella; Zurita, Bryan; Carrasco-S, Luis; Carrillo, Henry; Segarra, Vı́ctor; Naranjo, Elizabeth; Coronel, Brian; Espinosa, Rodrigo; Cabrera, Marcela; Capparelli, Mariana V.; Celi, Jorge

doi:10.1016/j.envpol.2021.117796

Cited by 4 publications

(5 citation statements)

References 77 publications

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“…Unfortunately, it is affected by deforestation [50] due to the expansion of the agricultural frontier [13], other extrac-tive processes [51], urbanisation processes and other human interventions [52]. Another issue that has yet to be adequately addressed is soil [53] and water [54] pollution resulting from intensive agricultural practices that include the increased use of chemicals and fertilisers [55].…”

Section: Study Areamentioning

confidence: 99%

“…In 1979, Ecuador returned to democracy [57]. that has yet to be adequately addressed is soil [53] and water [54] pollution resulting from intensive agricultural practices that include the increased use of chemicals and fertilisers [55].…”

Section: Study Areamentioning

confidence: 99%

“…It was a complicated task, since only certain information is publicly available, whereas access to other sources is restricted. We also discovered information that has yet to be adequately addressed is soil [53] and water [54] pollution resulting from intensive agricultural practices that include the increased use of chemicals and fertilisers [55].…”

Section: Data Sourcesmentioning

confidence: 99%

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Rethinking Agricultural Policy in Ecuador (1960–2020): Analysis Based on the Water–Energy–Food Security Nexus

Toledo,

Salmoral,

Viteri-Salazar

2023

Sustainability

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Agriculture is the principal source for satisfying the growing global demand for food. However, current production patterns and socioeconomic and demographic pressures could lead to an unsustainable, inequitable food supply. Government interventions support technical advances designed to meet future needs following international trends while overcoming biophysical constraints. Those most often used are focused on augmenting land productivity through mechanisation and increased dependence on external inputs. To that end, public policies have emerged as engines of development in agriculture and the agri-food system. This article provides a chronological analysis of the relevant milestones in the agri-food sector in Ecuador (1960–2020). At first, agrarian reform focused on land distribution and tenure. Subsequently, the focus moved to the implementation of research, technological innovation and technology transfer programmes promoted by the state with support and financing from international organisations. For this article, we chose for our approach the water–energy–food nexus. Until now, insufficient study based on this approach regarding agricultural programmes has been conducted in Ecuador. It is essential to concentrate on this sector because it represents about 10% of the gross domestic product and is a principal source of employment for more than two-thirds of the economically active population in rural areas. However, land fractioning, the lack of project continuity and the focus on the application of technological packages identified in this analysis suggest the need to rethink public policies for a sustainable agri-food system.

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Section: Study Areamentioning

confidence: 99%

Section: Study Areamentioning

confidence: 99%

Section: Data Sourcesmentioning

confidence: 99%

See 1 more Smart Citation

Rethinking Agricultural Policy in Ecuador (1960–2020): Analysis Based on the Water–Energy–Food Security Nexus

Toledo,

Salmoral,

Viteri-Salazar

2023

Sustainability

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“…Su elevación varía entre 40 y 417 m.s.n.m. (ver figura 1) y tiene una red de drenaje de 61,9 km 2 (Chancay et al, 2021). La MRM forma parte del sistema hidrográfico del río Jama, y está compuesto por tres ríos perennes y once estacionales.…”

Section: áRea De Estudiounclassified

“…La erosión del suelo en la MRM se atribuye principalmente a la deforestación y compactación del suelo, malas prácticas agrícolas (p.ej. monocultivos, siembra en laderas, barbecho corto) y al uso incontrolado de la tierra desde la década de 1960 (Chancay et al, 2021).…”

Section: Introductionunclassified

Altos niveles de erosión hídrica en una microcuenca tropical calculado mediante el modelo USLE

Jaya-Santillán

2023

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Basándose en el método USLE, se utilizó SIG para modelar las tasas de erosión en la Microcuenca de Río Muchacho (MRM). Los resultados de la simulación muestran una pérdida media de suelo de 74,4 t/ha/año, correspondiente a la categoría de "erosión alta". Las cabeceras de la MRM, caracterizadas por suelos dispersos, vegetación escasa, pastoreo, pendientes pronunciadas y lluvias frecuentes, presentan tasas de erosión del suelo medias a muy altas (> 25 t/ha/año). Por otro lado, las zonas con alta densidad de vegetación, pendientes moderadas y escasas precipitaciones presentan tasas de erosión bajas (0-25 t/ha/año) y se sitúan principalmente en la parte central y baja de la cuenca. Los resultados de la simulación mostraron una distribución de los datos sesgada a la derecha (skew = 1,8), es decir presenta valores de erosión altos con mayor frecuencia; y leptocúrtica (Kurt = 21,2) con valores atípicos poco frecuentes

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Assessment of Spatio-Temporal Changes for Ecosystem Health: A Case Study of Hexi Corridor, Northwest China

Wei

Nan

Xie

et al. 2022

Environmental Management

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Integrating multiple lines of evidence to assess freshwater ecosystem health in a tropical river basin

Cited by 4 publications

References 77 publications

Rethinking Agricultural Policy in Ecuador (1960–2020): Analysis Based on the Water–Energy–Food Security Nexus

Rethinking Agricultural Policy in Ecuador (1960–2020): Analysis Based on the Water–Energy–Food Security Nexus

Altos niveles de erosión hídrica en una microcuenca tropical calculado mediante el modelo USLE

Assessment of Spatio-Temporal Changes for Ecosystem Health: A Case Study of Hexi Corridor, Northwest China

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