Mangrove habitat dynamics in response to Holocene sea level and climate changes along southwest coast of India

Limaye, Ruta B.; Kumaran, K.; Padmalal, D.

doi:10.1016/j.quaint.2013.12.031

Cited by 32 publications

(15 citation statements)

References 3 publications

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“…Sherrod & McMillan, ; Woodroffe & Gindrod, ). For example, evidence from palynological and chronological data revealed considerable changes in mangrove habitat distribution and species composition along the west coast of India, controlled by hydrological regime shifts in response to sea level and monsoonal rainfall fluctuations in the Late Holocene (Limaye, Kumaran & Padmalal, ; also see Ellison, ). Similarly, using remote‐sensing metrics, recent studies have addressed the matter of range limit sensitivity in mangroves (Osland et al , ; Cavanaugh et al , ), explaining the poleward expansion at their latitudinal limits along the marsh–mangrove ecotone on multiple continents (Rogers et al , ; Osland et al , ; Cavanaugh et al , ).…”

Section: Dispersal and Climate Changementioning

confidence: 99%

A general framework for propagule dispersal in mangroves

et al. 2019

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Dispersal allows species to shift their distributions in response to changing climate conditions. As a result, dispersal is considered a key process contributing to a species' long-term persistence. For many passive dispersers, fluid dynamics of wind and water fuel these movements and different species have developed remarkable adaptations for utilizing this energy to reach and colonize suitable habitats. The seafaring propagules (fruits and seeds) of mangroves represent an excellent example of such passive dispersal. Mangroves are halophytic woody plants that grow in the intertidal zones along tropical and subtropical shorelines and produce hydrochorous propagules with high dispersal potential. This results in exceptionally large coastal ranges across vast expanses of ocean and allows species to shift geographically and track the conditions to which they are adapted. This is particularly relevant given the challenges presented by rapid sea-level rise, higher frequency and intensity of storms, and changes in regional precipitation and temperature regimes. However, despite its importance, the underlying drivers of mangrove dispersal have typically been studied in isolation, and a conceptual synthesis of mangrove oceanic dispersal across spatial scales is lacking. Here, we review current knowledge on mangrove propagule dispersal across the various stages of the dispersal process. Using a general framework, we outline the mechanisms and ecological processes that are known to modulate the spatial patterns of mangrove dispersal. We show that important dispersal factors remain understudied and that adequate empirical data on the determinants of dispersal are missing for most mangrove species. This review particularly aims to provide a baseline for developing future research agendas and field campaigns, filling current knowledge gaps and increasing our understanding of the processes that shape global mangrove distributions.

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Section: Dispersal and Climate Changementioning

confidence: 99%

A general framework for propagule dispersal in mangroves

et al. 2019

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“…The legacy of past responses to climatic change is reflected in the current distribution of mangroves, but the existence of relic pollen and peat deposits provides abundant evidence of dramatic change over geologic time, especially in relation to late Quaternary sea-level change [13][14][15][16][17][18][19][20][21][22]. Analysis of sediment cores for organic geochemical markers, peat deposits, and palynological proxies indicate an overall pattern of paleoecological succession of mangroves in response to changes in sea level.…”

Section: Historical Evidencementioning

confidence: 99%

“…The geological record indicates that mangroves have kept pace with rising sea level, but in regions experiencing more rapid rise, mangroves have gone locally extinct and in some cases been replaced by freshwater plants. A number of historical patterns have been reconstructed [18][19][20][21][22] all showing significant ecological change depending on the rate of sea-level rise and the influence of other factors, such as rates of subsidence or uplift.…”

Section: Historical Evidencementioning

confidence: 99%

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The Impact of Climate Change on Mangrove Forests

Alongi

2015

Curr Clim Change Rep

368

210

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Mangrove forests have survived a number of catastrophic climate events since first appearing along the shores of the Tethys Sea during the late Cretaceous-Early Tertiary. The existence of mangrove peat deposits worldwide attests to past episodes of local and regional extinction, primarily in response to abrupt, rapid rises in sea level. Occupying a harsh margin between land and sea, most mangrove plants and associated organisms are predisposed to be either resilient or resistant to most environmental change. Based on the most recent Intergovernmental Panel on Climate Change (IPCC) forecasts, mangrove forests along arid coasts, in subsiding river deltas, and on many islands are predicted to decline in area, structural complexity, and/or in functionality, but mangroves will continue to expand polewards. It is highly likely that they will survive into the foreseeable future as sea level, global temperatures, and atmospheric CO 2 concentrations continue to rise.

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“…(Anbazhagan and Ghosh 2002).The coastal plain is mostly low and gentle slopes on the seaward side at several places that signify that climate change-induced relative sea level rise will drive the profound impacts in the Mumbai metropolitan region (Limaye et al 2014). …”

Section: Description Of the Study Areamentioning

confidence: 99%

Impacts of predicted sea level rise on land use/land cover categories of the adjacent coastal areas of Mumbai megacity, India

Pramanik

2016

Environ Dev Sustain

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Physical and ecological responses of the coastal areas in the vicinity of Mumbai, India, due to relative sea level rise are examined by different inundation scenarios. Evaluation of potential habitat loss under sea level rise was made by incorporating the land use/land cover (LULC) adopted from the digital elevation model with the satellite imagery. LULC categories overlaid on 1.0, 2.0, 3.0 and 4.0 m coastal elevation showed that the coastal areas of Mumbai were mostly covered by vegetation followed by barren land, agricultural land, urban areas and water bodies. For the relative sea level rise scenarios of 1.0, 2.0, 3.0 and 4.0 m, the tidal inundation areas were estimated to be 257.85, 385.58, 487.56 and 570.63 km 2 , respectively, using GIS techniques. The losses of urban areas were also estimated at 25.32, 41.64, 54.61 and 78.86 km 2 for the 1.0, 2.0, 3.0 and 4.0 m relative sea level rise, respectively, which is most alarming information for the most populated city on the eastern coast of India. The results conclude that relative sea level rise scenario will lead profound impacts on LULC categories as well as on coastal features and landforms in the adjoining part of Mumbai. The sea level rise would also reduce the drainage gradients that promote flooding condition to rainstorms and subsequently increase saltwater intrusion into coastal regions. Alterations in the coastal features and landforms correlated with inundation characteristics that make the coastal region more vulnerable in the coming decades due to huge development activities and population pressures in Mumbai.

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Mangrove habitat dynamics in response to Holocene sea level and climate changes along southwest coast of India

Cited by 32 publications

References 3 publications

A general framework for propagule dispersal in mangroves

A general framework for propagule dispersal in mangroves

The Impact of Climate Change on Mangrove Forests

Impacts of predicted sea level rise on land use/land cover categories of the adjacent coastal areas of Mumbai megacity, India

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