Diagnosis of the vegetation cover in the wetlands of La Caimanera Swamp, Colombia and Casitas Wetland, Mexico by means of Landsat and Sentinel-2A images during last four decades
Coastal wetlands have gained significant attention in recent decades for their role in climate regulation, particularly through carbon sequestration. However, anthropogenic activities, driven by population growth, have led to the degradation of these ecosystems, causing both loss of area and functio...
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Elsevier
2025-03-01
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S259012302500297X |
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| author | Gastón Ballut-Dajud Erick Arturo Betanzo-Torres Luis Carlos Sandoval Herazo |
| author_facet | Gastón Ballut-Dajud Erick Arturo Betanzo-Torres Luis Carlos Sandoval Herazo |
| author_sort | Gastón Ballut-Dajud |
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| description | Coastal wetlands have gained significant attention in recent decades for their role in climate regulation, particularly through carbon sequestration. However, anthropogenic activities, driven by population growth, have led to the degradation of these ecosystems, causing both loss of area and functional decline. This study aims to use remote sensing techniques, specifically Landsat and Sentinel-2 imagery, to compare the vegetation cover of two coastal wetlands over the past four decades. By applying the Normalized Difference Vegetation Index (NDVI) and Normalized Difference Water Index (NDWI), we assess vegetation phenology and estimate changes in cover area through supervised classification. Results indicated that mangroves exhibited high reflectance in the near-infrared band, with red mangroves (Rhizophora mangle) showing higher reflectance than black mangroves (Avicennia germinans). Both species were identified in the wetlands studied. The mangroves maintain their health, as NDVI values are above 0.6, indicating good photosynthetic activity. However, the mangroves in La Caimanera Swamp are older and show signs of senescence. In terms of water content, NDWI positive values ranged from 0.06 to 0.72, reflecting water presence in both wetlands. Finally, it can be said that the mangrove area is preserved and has not suffered significant damage from human activities. |
| format | Article |
| id | doaj-art-edf5ad4ace3d47aca975192e39b89848 |
| institution | Kabale University |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
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| series | Results in Engineering |
| spelling | doaj-art-edf5ad4ace3d47aca975192e39b898482025-02-09T05:01:04ZengElsevierResults in Engineering2590-12302025-03-0125104211Diagnosis of the vegetation cover in the wetlands of La Caimanera Swamp, Colombia and Casitas Wetland, Mexico by means of Landsat and Sentinel-2A images during last four decadesGastón Ballut-Dajud0Erick Arturo Betanzo-Torres1Luis Carlos Sandoval Herazo2Departamento de ingeniería civil, Universidad de Sucre, Carrera 28 No 5-267, Puerta Roja, Sincelejo 700003, Colombia; Wetlands and Environmental Sustainability Laboratory, Postgraduate Studies and Research Division, Instituto Tecnológico Superior de Misantla, Km 1.8 Carretera a Loma del Cojolite, Misantla 93821, Veracruz, MexicoWetlands and Environmental Sustainability Laboratory, Postgraduate Studies and Research Division, Instituto Tecnológico Superior de Misantla, Km 1.8 Carretera a Loma del Cojolite, Misantla 93821, Veracruz, MexicoFacultad de ingeniería, Universidad de Sucre, Carrera 28 No 5-267 Puerta Roja, Sincelejo, 700003, Colombia; Wetlands and Environmental Sustainability Laboratory, Postgraduate Studies and Research Division, Instituto Tecnológico Superior de Misantla, Km 1.8 Carretera a Loma del Cojolite, Misantla 93821, Veracruz, Mexico; Corresponding author.Coastal wetlands have gained significant attention in recent decades for their role in climate regulation, particularly through carbon sequestration. However, anthropogenic activities, driven by population growth, have led to the degradation of these ecosystems, causing both loss of area and functional decline. This study aims to use remote sensing techniques, specifically Landsat and Sentinel-2 imagery, to compare the vegetation cover of two coastal wetlands over the past four decades. By applying the Normalized Difference Vegetation Index (NDVI) and Normalized Difference Water Index (NDWI), we assess vegetation phenology and estimate changes in cover area through supervised classification. Results indicated that mangroves exhibited high reflectance in the near-infrared band, with red mangroves (Rhizophora mangle) showing higher reflectance than black mangroves (Avicennia germinans). Both species were identified in the wetlands studied. The mangroves maintain their health, as NDVI values are above 0.6, indicating good photosynthetic activity. However, the mangroves in La Caimanera Swamp are older and show signs of senescence. In terms of water content, NDWI positive values ranged from 0.06 to 0.72, reflecting water presence in both wetlands. Finally, it can be said that the mangrove area is preserved and has not suffered significant damage from human activities.http://www.sciencedirect.com/science/article/pii/S259012302500297XWetlandsRemote sensingSpectral indicesSpectral signatures, Climate change |
| spellingShingle | Gastón Ballut-Dajud Erick Arturo Betanzo-Torres Luis Carlos Sandoval Herazo Diagnosis of the vegetation cover in the wetlands of La Caimanera Swamp, Colombia and Casitas Wetland, Mexico by means of Landsat and Sentinel-2A images during last four decades Results in Engineering Wetlands Remote sensing Spectral indices Spectral signatures, Climate change |
| title | Diagnosis of the vegetation cover in the wetlands of La Caimanera Swamp, Colombia and Casitas Wetland, Mexico by means of Landsat and Sentinel-2A images during last four decades |
| title_full | Diagnosis of the vegetation cover in the wetlands of La Caimanera Swamp, Colombia and Casitas Wetland, Mexico by means of Landsat and Sentinel-2A images during last four decades |
| title_fullStr | Diagnosis of the vegetation cover in the wetlands of La Caimanera Swamp, Colombia and Casitas Wetland, Mexico by means of Landsat and Sentinel-2A images during last four decades |
| title_full_unstemmed | Diagnosis of the vegetation cover in the wetlands of La Caimanera Swamp, Colombia and Casitas Wetland, Mexico by means of Landsat and Sentinel-2A images during last four decades |
| title_short | Diagnosis of the vegetation cover in the wetlands of La Caimanera Swamp, Colombia and Casitas Wetland, Mexico by means of Landsat and Sentinel-2A images during last four decades |
| title_sort | diagnosis of the vegetation cover in the wetlands of la caimanera swamp colombia and casitas wetland mexico by means of landsat and sentinel 2a images during last four decades |
| topic | Wetlands Remote sensing Spectral indices Spectral signatures, Climate change |
| url | http://www.sciencedirect.com/science/article/pii/S259012302500297X |
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