Applications of Sentinel-2 satellite data for spatio-temporal mapping of deep pools for monitoring the riverine connectivity and assessment of ecological dynamics: a case from Godavari, a tropical river in India (2016–2021).
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Title |
Applications of Sentinel-2 satellite data for spatio-temporal mapping of deep pools for monitoring the riverine connectivity and assessment of ecological dynamics: a case from Godavari, a tropical river in India (2016–2021).
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Subject |
NDWI · Deep pool · Water spread dynamics · Godavari Basin · Water Presence Frequency · Sentinel-2
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Description |
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Rivers are dynamic ecosystems with diverse habitats that require ample connectivity to ensure the fow of ecosystem services, thus empowering the sustainable development of an entire basin. Geo-spatial tools ofer powerful prospects for monitoring of aquatic ecosystems. The usefulness of Sentinel-2 datasets to assess river connectivity has been explored for an un-gauged seasonal river system. The present study was undertaken in fve ecologically unique river reaches viz. Wainganga, Wardha, Pranhita, Godavari-mid and Manair in Godavari Basin in the Indian Deccan Plateau to map water spread dynamics at various time scales, i.e., fortnightly, monthly, seasonal, annual and demi-decadal during 2016–2021. The maximum value of perennial water spread per square kilometre of total foodplain area (2016–2021), determined using Sentinel-2 imageries, was observed in river Wardha (0.18) followed by Pranhita (0.12) and Wainganga (0.11). The water spread showed a decreasing trend, while the number of patches in the river corridor increased over time from post-monsoon to pre-monsoon season. The copious perennial habitat with relatively larger patches, incessant fow in river Pranhita and obstructed fow, large-sized patches reported in river Wardha during summer months, hold importance in terms of providing refuge to aquatic biota. This study provides evidence for the impact of water projects on spatio-temporal water spread dynamics in Godavari Basin. The demonstrated utility of Sentinel-2 imagery coupled with gauge station measurements for river Not Available |
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Date |
2023-05-16T04:01:13Z
2023-05-16T04:01:13Z 2022-07-04 |
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Journal
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Not Available http://krishi.icar.gov.in/jspui/handle/123456789/77363 |
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Language |
English
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Not Available;
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Springer link
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