A Comparison of Global Mangrove Maps: Assessing Spatial and Bioclimatic Discrepancies at Poleward Range Limits

27 Pages Posted: 18 Jun 2022

See all articles by Arimatéa C. Ximenes

Arimatéa C. Ximenes

Center for International Forestry Research

Kyle C. Cavanaugh

affiliation not provided to SSRN

Damien Arvor

affiliation not provided to SSRN

Daniel Murdiyarso

Center for International Forestry Research

Nathan Thomas

affiliation not provided to SSRN

Gustavo Arcoverde

affiliation not provided to SSRN

Polyanna da C. Bispo

The University of Manchester

Tom Van der Stocken

affiliation not provided to SSRN

Abstract

Mangrove distribution maps are used for a variety of applications, ranging from estimates of mangrove extent, deforestation rates, quantify carbon stocks, to modelling response to climate change. There are multiple mangrove distribution datasets, which were derived from different remote sensing data and classification methods, and so there are some discrepancies among these datasets, especially with respect to the locations of their range limits. We investigate the latitudinal discrepancies in poleward mangrove range limits represented by these datasets and how these differences translate climatologically considering factors known to control mangrove distributions.We compare four widely used global mangrove distribution maps - the World Atlas of Mangroves, the World Atlas of Mangroves 2, the Global Distribution of Mangroves, the Global Mangrove Watch. We examine differences in climate among 21 range limit positions by analysing a set of bioclimatic variables that have been commonly related to the distribution of mangroves.Global mangrove maps show important discrepancies in the position of poleward range limits. Latitudinal differences between mangrove range limits in the datasets exceed 5, 7 and 10 in western North America, western Australia and northern West Africa, respectively. In some range limit areas, such as Japan, discrepancies in the position of mangrove range limits in different datasets correspond to differences exceeding 600 mm in annual precipitation and >10C in the minimum temperature of the coldest month.We conclude that dissimilarities in mapping mangrove range limits in different parts of the world can jeopardise inferences of climatic thresholds. We expect that global mapping efforts should prioritise the position of range limits with greater accuracy, ideally combining data from field-based surveys and very high-resolution remote sensing data. An accurate representation of range limits will contribute to better predicting mangrove range dynamics and shifts in response to climate change.

Keywords: Species Distribution, Range Limits, climate change, Coastal Wetland, mapping

Suggested Citation

Ximenes, Arimatéa C. and Cavanaugh, Kyle C. and Arvor, Damien and Murdiyarso, Daniel and Thomas, Nathan and Arcoverde, Gustavo and Bispo, Polyanna da C. and Van der Stocken, Tom, A Comparison of Global Mangrove Maps: Assessing Spatial and Bioclimatic Discrepancies at Poleward Range Limits. Available at SSRN: https://ssrn.com/abstract=4140146 or http://dx.doi.org/10.2139/ssrn.4140146

Arimatéa C. Ximenes (Contact Author)

Center for International Forestry Research ( email )

Managua
Nicaragua

Kyle C. Cavanaugh

affiliation not provided to SSRN ( email )

No Address Available

Damien Arvor

affiliation not provided to SSRN ( email )

No Address Available

Daniel Murdiyarso

Center for International Forestry Research ( email )

Managua
Nicaragua

Nathan Thomas

affiliation not provided to SSRN ( email )

No Address Available

Gustavo Arcoverde

affiliation not provided to SSRN ( email )

No Address Available

Polyanna da C. Bispo

The University of Manchester ( email )

United Kingdom

Tom Van der Stocken

affiliation not provided to SSRN ( email )

No Address Available

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