Abteilung Oberflächengewässer

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      originalId => protected18567 (integer)
      authors => protected'Krentscher, C.; Dubois, N.; Camperio, G.; Prebble, M.; L
         add, S. N.' (96 chars)
      title => protected'Palmitone as a potential species-specific biomarker for the crop plant taro 
         (<em>Colocasia esculenta</em> Schott) on remote Pacific islands' (139 chars)
      journal => protected'Organic Geochemistry' (20 chars)
      year => protected2019 (integer)
      volume => protected132 (integer)
      issue => protected'' (0 chars)
      startpage => protected'1' (1 chars)
      otherpage => protected'10' (2 chars)
      categories => protected'Colocasia esculenta; taro; lipid biomarker; palmitone; hentriacontan-16-one;
          Vanuatu; lake sediments' (100 chars)
      description => protected'The Pacific Island ecosystems of Remote Oceania were dramatically transforme
         d following the arrival of humans within the last ∼3000 years, as the new 
         settlers required technological innovations and environmental modifications 
         to maintain their populations. These modifications included the introduction
          of numerous exotic species, including the important crop <em>Colocasia escu
         lenta</em> Schott (taro) and the development of infrastructure suitable for 
         its cultivation. Archeological reconstruction of <em>C. esculenta</em> use i
         n the Pacific has been challenging because of the low-specificity of fossil 
         starch granules and its limited pollen production during periods of intense 
         cultivation. Here, we assess a lipid biomarker approach to trace <em>C. escu
         lenta</em> cultivation in the past. We characterized the neutral lipid compo
         sitions of leaf samples from common cultivars and widespread indigenous spec
         ies from the archipelago of Vanuatu by gas chromatography–mass spectrometr
         y (GC−MS). The compound palmitone (hentriacontan-16-one) was a major leaf 
         wax constituent in <em>C. esculenta</em> cultivar samples (mean concentratio
         n of 402 ± 63 µg/g dry wt) and was only detected in one other species, the
          ornamental tree <em>Cananga odorata</em> (175 µg/g dry wt). The structure 
         of palmitone is favorable for its long-term stability and we demonstrate its
          preservation potential in a 55 cm sedimentary record from Lake Vesalea on E
         spiritu Santo, Vanuatu, where <em>C. esculenta</em> is grown today. Palmiton
         e concentrations in this core fluctuated up to 4.1 µg/g dry wt. Our results
          indicate that in appropriate environmental contexts, sedimentary palmitone 
         concentrations could be used to reconstruct <em>C. esculenta</em> cultivatio
         n and to provide insights about past horticultural innovations in Remote Oce
         ania.' (1829 chars)
      serialnumber => protected'0146-6380' (9 chars)
      doi => protected'10.1016/j.orggeochem.2019.03.006' (32 chars)
      uid => protected18567 (integer)
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      pid => protected124 (integer)