Spectral analysis using LANDSAT images to monitor the chlorophyll-a concentration in Lake Laja in Chile

Lien Rodríguez-López; Iongel Duran-Llacer; Lisdelys González-Rodríguez; Rodrigo Abarca-del-Rio; Rolando Cárdenas; Oscar Parra; Rebeca Martínez-Retureta; Roberto Urrutia

doi:10.1016/j.ecoinf.2020.101183

Spectral analysis using LANDSAT images to monitor the chlorophyll-a concentration in Lake Laja in Chile

Lien Rodríguez-López, Iongel Duran-Llacer, Lisdelys González-Rodríguez, Rodrigo Abarca-del-Rio, Rolando Cárdenas, Oscar Parra, Rebeca Martínez-Retureta, Roberto Urrutia

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

60 Citas (Scopus)

Resumen

In this study remote sensing was used as an early alert tool for chlorophyll-a changes in a continental aquatic ecosystem in central Chile. To this end, 14 LANDSAT images of Laja Lake (36° 54 'S, 71° 05' W, 1,360 meters above sea level) were taken over a 6-year period. Eleven spectral indexes were calculated. At the same time, chlorophyll-a concentrations were determined experimentally. Correlations between vegetation indices and chlorophyll-a concentrations in different monitoring zones were established. The indices that presented a good correlation were NDVI and GNDVI. A new regression model was developed that allows the primary productivity values of Laja Lake to be estimated using satellite data. Finally, chlorophyll-a maps were created.

Idioma original	Inglés
Número de artículo	101183
Publicación	Ecological Informatics
Volumen	60
DOI	https://doi.org/10.1016/j.ecoinf.2020.101183
Estado	Publicada - nov. 2020
Publicado de forma externa	Sí

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title = "Spectral analysis using LANDSAT images to monitor the chlorophyll-a concentration in Lake Laja in Chile",

abstract = "In this study remote sensing was used as an early alert tool for chlorophyll-a changes in a continental aquatic ecosystem in central Chile. To this end, 14 LANDSAT images of Laja Lake (36° 54 'S, 71° 05' W, 1,360 meters above sea level) were taken over a 6-year period. Eleven spectral indexes were calculated. At the same time, chlorophyll-a concentrations were determined experimentally. Correlations between vegetation indices and chlorophyll-a concentrations in different monitoring zones were established. The indices that presented a good correlation were NDVI and GNDVI. A new regression model was developed that allows the primary productivity values of Laja Lake to be estimated using satellite data. Finally, chlorophyll-a maps were created.",

keywords = "Chile, Chlorophyll-a, GNDVI, Lake, NDVI, Spectral indices",

author = "Lien Rodr{\'i}guez-L{\'o}pez and Iongel Duran-Llacer and Lisdelys Gonz{\'a}lez-Rodr{\'i}guez and Rodrigo Abarca-del-Rio and Rolando C{\'a}rdenas and Oscar Parra and Rebeca Mart{\'i}nez-Retureta and Roberto Urrutia",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

month = nov,

doi = "10.1016/j.ecoinf.2020.101183",

language = "English",

volume = "60",

journal = "Ecological Informatics",

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T1 - Spectral analysis using LANDSAT images to monitor the chlorophyll-a concentration in Lake Laja in Chile

AU - Rodríguez-López, Lien

AU - Duran-Llacer, Iongel

AU - González-Rodríguez, Lisdelys

AU - Abarca-del-Rio, Rodrigo

AU - Cárdenas, Rolando

AU - Parra, Oscar

AU - Martínez-Retureta, Rebeca

AU - Urrutia, Roberto

PY - 2020/11

Y1 - 2020/11

N2 - In this study remote sensing was used as an early alert tool for chlorophyll-a changes in a continental aquatic ecosystem in central Chile. To this end, 14 LANDSAT images of Laja Lake (36° 54 'S, 71° 05' W, 1,360 meters above sea level) were taken over a 6-year period. Eleven spectral indexes were calculated. At the same time, chlorophyll-a concentrations were determined experimentally. Correlations between vegetation indices and chlorophyll-a concentrations in different monitoring zones were established. The indices that presented a good correlation were NDVI and GNDVI. A new regression model was developed that allows the primary productivity values of Laja Lake to be estimated using satellite data. Finally, chlorophyll-a maps were created.

AB - In this study remote sensing was used as an early alert tool for chlorophyll-a changes in a continental aquatic ecosystem in central Chile. To this end, 14 LANDSAT images of Laja Lake (36° 54 'S, 71° 05' W, 1,360 meters above sea level) were taken over a 6-year period. Eleven spectral indexes were calculated. At the same time, chlorophyll-a concentrations were determined experimentally. Correlations between vegetation indices and chlorophyll-a concentrations in different monitoring zones were established. The indices that presented a good correlation were NDVI and GNDVI. A new regression model was developed that allows the primary productivity values of Laja Lake to be estimated using satellite data. Finally, chlorophyll-a maps were created.

KW - Chile

KW - Chlorophyll-a

KW - GNDVI

KW - Lake

KW - NDVI

KW - Spectral indices

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U2 - 10.1016/j.ecoinf.2020.101183

DO - 10.1016/j.ecoinf.2020.101183

M3 - Article

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SN - 1574-9541

VL - 60

JO - Ecological Informatics

JF - Ecological Informatics

M1 - 101183

ER -

Spectral analysis using LANDSAT images to monitor the chlorophyll-a concentration in Lake Laja in Chile

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