Assessment of tsunami and anthropogenic impacts on the forest of the North Andaman Islands, India

Prasad, P. Rama Chandra; Reddy, C. Sudhakar; Rajan, K. S.; Raza, S.H.; Dutt, C. B. S.

doi:10.1080/01431160802460070

Cited by 24 publications

(28 citation statements)

References 17 publications

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“…Because of good results on the regional scale, particularly in combination with detailed ground information as reference input, visual-interpretation methods are used extensively to map complex ecosystems [20,40,116,117,120]. Also, simple unsupervised and supervised classification methodologies are frequently used for mangrove mapping [3,12,16,21,106,110,111,119,121].…”

Section: Methodsmentioning

confidence: 99%

“…The spectral and spatial resolution of satellite data are sufficient for many purposes. On a regional mapping level, mangrove-non-mangrove vegetation classes [21,89,108,117], density differences [9,19,20,72,79,111,113,120,122,129], condition status [20,40,120,123], and, in some cases, mangrove community-dominating species [103,116], could be clearly discriminated.…”

Section: Methodsmentioning

confidence: 99%

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Remote Sensing of Mangrove Ecosystems: A Review

et al. 2011

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Mangrove ecosystems dominate the coastal wetlands of tropical and subtropical regions throughout the world. They provide various ecological and economical ecosystem services contributing to coastal erosion protection, water filtration, provision of areas for fish and shrimp breeding, provision of building material and medicinal ingredients, and the attraction of tourists, amongst many other factors. At the same time, mangroves belong to the most threatened and vulnerable ecosystems worldwide and experienced a dramatic decline during the last half century. International programs, such as the Ramsar Convention on Wetlands or the Kyoto Protocol, underscore the importance of immediate protection measures and conservation activities to prevent the further loss of mangroves. In this context, remote sensing is the tool of choice to provide spatio-temporal information on mangrove ecosystem distribution, species differentiation, health status, and ongoing changes of mangrove populations. Such studies can be based on various sensors, ranging from aerial photography to high-and medium-resolution optical imagery and from hyperspectral data to active microwave (SAR) data. Remote-sensing techniques have demonstrated a high potential to detect, identify, map, and monitor mangrove conditions and changes during the last two decades, which is reflected by the large number of scientific papers published on this topic. To our knowledge, a recent review paper on the remote sensing of mangroves does not exist, although mangrove ecosystems have become the focus of attention in the context of current climate change and discussions of the OPEN ACCESSRemote Sens. 2011, 3 879 services provided by these ecosystems. Also, climate change-related remote-sensing studies in coastal zones have increased drastically in recent years. The aim of this review paper is to provide a comprehensive overview and sound summary of all of the work undertaken, addressing the variety of remotely sensed data applied for mangrove ecosystem mapping, as well as the numerous methods and techniques used for data analyses, and to further discuss their potential and limitations.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Remote Sensing of Mangrove Ecosystems: A Review

et al. 2011

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“…Further the use of moderate to high spatial resolution multispectral satellite data aided in deriving forest types of regions. Also the availability of the temporal satellite data made it possible to quantify the rate of changes these landscapes are undergoing in view of rapid human interactions (Prasad et al 2009c). The thematic map derived by analyzing current satellite data depicts the current forest status and used as baseline data for random distribution of sample plots for field inventory.…”

Section: Field Inventory Related Issuesmentioning

confidence: 99%

Is current forest landscape research approaches providing the right insights? Observations from India context

Prasad

Rajan

2015

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Abstract.One of the major challenges in the current scenario for ecological conservation is to quantify the forest landscape in its spatio-temporal domain and understand further implications of those. While the detailed study of the forest ecosystems may provide insights into biodiversity, carrying capacity and productive nature, most of the studies are restricted to single time/event inventory and focused on assessment of tree diversity patterns. Through the adoption of geospatial technologies like remote sensing and Geographical Information System (GIS), though forest monitoring has been possible, the linkages to the biodiversity distribution and its patterns are still at an empirical level, thus supporting broad measures of protection and preservation without accounting for the local/regional variability. Towards this the paper discusses the lacuna in the current landscape research approaches in Indian scenario. Presents a framework to analyze the landscape structure at the, micro, meso and macro levels. Emphasize the need for the collection of spatio-temporal field data to analyze the change in biodiversity and their linked entities. The paper suggests the need for development of long term ecological area networks to understand the ecological processes, making the data open and improve collaborations among the organizations working in the similar domain to enhance the impact of the research works.

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“…Recent advances in sensor technologies (e.g., IRS, IKONOS, and QuickBird) have enhanced the ability of RS programme to provide multi-resolution data. RS data are supplemented with different types of collateral vector data and environmental attributes and spectral information [27,28] for high precision mapping. Collection of ground control points [29] and training polygons using global positioning system (GPS) helps in the geo-registration, classification and accuracy assessment [30].…”

Section: Ancillary Datamentioning

confidence: 99%

Inventorying, Mapping and Monitoring of Mangroves towards Sustainable Management of West Coast, India

Setturu¹

2014

J Geophys Remote Sens

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Mangroves are one of the productive and highly adaptive ecosystems on the Earth, and provide invaluable services to the coastal communities. Ecological and sustainable management of the mangrove ecosystem requires crucial knowledge of variability and dynamics over a time and space. There are no reliable recent spatial extent estimates of mangroves or trend of coverage in West coast. The mapping from medium spatial resolution remote sensing data often leads to the underestimation of spatial extent. An attempt has been made to provide detailed information of mangroves species distribution using remote sensing data of high spatial resolution integrated with the other collateral field information through GIS. The coastline changes and the mangrove dynamics during 1989-2010 were assessed using supervised classifier technique provided the spatial distribution of mangrove species namely Rhizophora mucronata, Sonneratia caseolaris, Avicennia officinalis, Sonneratia alba, and Kandelia candel with classification good accuracy. Delineation of mangroves at species wise records based on extensive field data will be invaluable for appropriate management (e.g. plantation, eco-tourism) and conservation measures for estuaries of Central Western Ghats. Mangroves play pivotal role in providing vital ecosystem goods and services, but are under threat due to anthropogenic activities, affecting habitat for specialised fauna and food resources for humans, birds and fish. This necessitates interventions of regulatory authorities to partner with the local communities in the restoration and conservation of mangrove habitats.

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Assessment of tsunami and anthropogenic impacts on the forest of the North Andaman Islands, India

Cited by 24 publications

References 17 publications

Remote Sensing of Mangrove Ecosystems: A Review

Remote Sensing of Mangrove Ecosystems: A Review

Is current forest landscape research approaches providing the right insights? Observations from India context

Inventorying, Mapping and Monitoring of Mangroves towards Sustainable Management of West Coast, India

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