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Pacific Island mangroves: distribution and environmental settings

Journal Article


Abstract


  • Mangroves do not cover large areas on Pacific islands, and show rapid decrease in species diversity and stature. Where they do occur they may be as productive, particularly in terms of detritus per unit area, as more luxuriant mangrove forests elsewhere. Oscillations of sea level during the Quaternary have disrupted the distribution of mangroves. Present mangrove swamps are shown to have developed and extended substantially during the late Holocene in each of 4 environmental settings: 1) deltaic/estuarine mangroves, 2) mangroves of embayments/harbors/lagoons, 3) mangroves of reef flats, 4) inland mangroves and mangrove depressions. These are ranked in order from 1-4 in terms of landform and mangrove habitat diversity, rates of sedimentation, opportunities for freshwater nutrient input and enhanced productivity and potential for organic carbon flux and trophic diversity. Restricted stands of mangroves, such as those inland on "low' islands or atolls, are unlikely to export quantities of organic carbon, but nevertheless are productive and support resources which can play an important role in the subsistence economy of the local inhabitants. -from Author

Publication Date


  • 1987

Citation


  • Woodroffe, C. D. (1987). Pacific Island mangroves: distribution and environmental settings. Pacific Science, 41(1-4), 166-185.

Scopus Eid


  • 2-s2.0-0023529954

Web Of Science Accession Number


Start Page


  • 166

End Page


  • 185

Volume


  • 41

Issue


  • 1-4

Abstract


  • Mangroves do not cover large areas on Pacific islands, and show rapid decrease in species diversity and stature. Where they do occur they may be as productive, particularly in terms of detritus per unit area, as more luxuriant mangrove forests elsewhere. Oscillations of sea level during the Quaternary have disrupted the distribution of mangroves. Present mangrove swamps are shown to have developed and extended substantially during the late Holocene in each of 4 environmental settings: 1) deltaic/estuarine mangroves, 2) mangroves of embayments/harbors/lagoons, 3) mangroves of reef flats, 4) inland mangroves and mangrove depressions. These are ranked in order from 1-4 in terms of landform and mangrove habitat diversity, rates of sedimentation, opportunities for freshwater nutrient input and enhanced productivity and potential for organic carbon flux and trophic diversity. Restricted stands of mangroves, such as those inland on "low' islands or atolls, are unlikely to export quantities of organic carbon, but nevertheless are productive and support resources which can play an important role in the subsistence economy of the local inhabitants. -from Author

Publication Date


  • 1987

Citation


  • Woodroffe, C. D. (1987). Pacific Island mangroves: distribution and environmental settings. Pacific Science, 41(1-4), 166-185.

Scopus Eid


  • 2-s2.0-0023529954

Web Of Science Accession Number


Start Page


  • 166

End Page


  • 185

Volume


  • 41

Issue


  • 1-4