Chemical Ecology of Red Mangroves, Rhizophora mangle, in the Hawaiian Islands.

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dc.contributor.authorFry, Brian
dc.contributor.authorCormier, Nicole
dc.date.accessioned2012-07-11T20:15:33Z
dc.date.available2012-07-11T20:15:33Z
dc.date.issued2011-04
dc.descriptionv. ill. 23 cm.
dc.descriptionQuarterly
dc.description.abstractThe coastal red mangrove, Rhizophora mangle L., was introduced to the Hawaiian Islands from Florida 100 yr ago and has spread to cover many shallow intertidal shorelines that once were unvegetated mudflats. We used a field survey approach to test whether mangroves at the land-ocean interface could indicate watershed inputs, especially whether measurements of leaf chemistry could identify coasts with high nutrient inputs and high mangrove productivities. During 2001 – 2002, we sampled mangroves on dry leeward coasts of southern Moloka‘i and O‘ahu for 14 leaf variables including stable carbon and nitrogen isotopes (δ 13C, δ 15N), macronutrients (C, N, P), trace elements (B, Mn, Fe, Cu, Zn), and cations ( Na, Mg, K, Ca). A new modeling approach using leaf Na, N, P, and δ 13C indicated two times higher productivity for mangroves in urban versus rural settings, with rural mangroves more limited by low N and P nutrients and high-nutrient urban mangroves more limited by freshwater inputs and salt stress. Leaf chemistry also helped identify other aspects of mangrove dynamics: especially leaf d 15N values helped identify groundwater N inputs, and a combination of strongly correlated variables (C, N, P, B, Cu, Mg, K, Ca) tracked the mangrove growth response to nutrient loading. Overall, the chemical marker approach is an efficient way to survey watershed forcing of mangrove forest dynamics.
dc.format.extent16 p.
dc.identifier.citationFry B, Cormier N. Chemical Ecology of Red Mangroves, Rhizophora mangle, in the Hawaiian Islands. Pac Sci 65(2): 219-234.
dc.identifier.issn0030-8870
dc.identifier.urihttp://hdl.handle.net/10125/23221
dc.language.isoen-US
dc.publisherHonolulu, University of Hawaii
dc.relation.ispartofseriesvol. 65, no. 2
dc.subject.lcshNatural history--Periodicals.
dc.subject.lcshScience--Periodicals
dc.subject.lcshNatural history--Pacific Area--Periodicals.
dc.titleChemical Ecology of Red Mangroves, Rhizophora mangle, in the Hawaiian Islands.
dc.typeArticle
dc.type.dcmiText

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Pacific Science, Volume 65, Number 2, 2011