Leaf Epicuticular Waxes

Eglinton, G.; Hamilton, Richard

doi:10.1126/science.156.3780.1322

Cited by 2,491 publications

(1,181 citation statements)

References 77 publications

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“…The highest concentrations were also detected at station LC3 (5.0 µg g -1 dry sediment) and the lowest values at station LC5 (0.4 µg g -1 dry sediment), which was nearly 10 times lower than that of station LC3. As reported by other authors, [29][30][31] the distribution of n-alkanols and n-alkanes seen in Conceição Lagoon sediments is commonly attributed to land plant inputs.…”

Section: Lipid Compoundssupporting

confidence: 49%

Distribution of lipid compounds in sediments from Conceição Lagoon, Santa Catarina Island, Brazil

Silva

Oliveira²,

Oliveira

et al. 2008

J. Braz. Chem. Soc.

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Compostos orgânicos provenientes de cinco amostras de sedimentos e um perfil com 75 cm foram coletados na Lagoa da Conceição, localizada na Ilha de Santa Catarina, com o objetivo de avaliar fontes de matéria orgânica. Os resultados que foram baseados na relação C:N:P, abundância relativa dos esteróis (com predomínio dos C 27 ), álcoois (0,2-1,2 µg g -1 ) e hidrocarbonetos lineares (0,4-5,0 µg g -1 ), e no uso do Índice Preferencial de Carbono (CPI), indicaram que a matéria orgânica é preferencialmente de origem terrestre (C/N > 10 e CPI > 2). Em todos os locais observaram-se correlações significativas entre as quantidades de fósforo (TP, média 5,20 µmol g -1 ) e carbono orgânico total (TOC, média 2,90 mmol g -1 ) com as frações de silte e argila. No perfil, que foi cronologicamente datado com o radionuclídeo 210 Pb, o intervalo de 55 a 75 cm apresentou predomínio de areia (> 50%). Entretanto, outros parâmetros, tais como TOC, TP e hidrocarbonetos também aumentaram nesse intervalo, o que sugere uma mudança na fonte de matéria orgânica.Lipid compounds from five sediment-water interface samples and a sediment core with 75 cm depth were used to assess sources of organic matter in Conceição Lagoon, located on Santa Catarina Island. The results which were based on the molar C:N:P ratios, relative abundance of sterols (dominated by the C 27 sterols), n-alkanols (0.2-1.2 µg g -1 ), n-alkanes (0.4-5.0 µg g -1 ) and the Carbon Preference Index (CPI), indicated that the organic matter is predominantly of terrestrial origin (C/N > 10 and CPI > 2). Total phosphorus (TP, average 5.20 µmol g -1 ) and organic carbon (TOC, average 2.90 mmol g -1 ) contents were well correlated with the silt and clay fractions at all locations. In the sediment core, chronologically dated with the radionuclide 210 Pb, the depth interval from 55 to 75 cm was dominated by the sand fraction (> 50%). However, parameters such as TOC, TP and n-alkane contents increased considerably at this depth suggesting a change in organic matter input sources.

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Section: Lipid Compoundssupporting

confidence: 49%

Distribution of lipid compounds in sediments from Conceição Lagoon, Santa Catarina Island, Brazil

Silva

Oliveira²,

Oliveira

et al. 2008

J. Braz. Chem. Soc.

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“…Long chain length n-alkanes (> C 21 ) are associated with the epicuticular leaf waxes of vascular plants (Eglinton and Hamilton 1967). Shorter chain length n-alkanes, notably C 15 , C 17 , and C 19 , are associated with algal biomass production (Meyers 2003).…”

Section: Biomarkersmentioning

confidence: 99%

Drivers of Sediment Accumulation and Nutrient Burial in Coastal Stormwater Detention Ponds, South Carolina, USA

et al. 2018

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Stormwater detention ponds are widely utilized as control structures to manage runoff during storm events. These ponds also represent biogeochemical hotspots, where carbon (C) and nutrients can be processed and buried in sediments. This study quantified C and nutrient [nitrogen (N) and phosphorus (P)] sources and burial rates in 14 stormwater detention ponds representative of typical residential development in coastal South Carolina. Bulk sediment accumulation was directly correlated with catchment impervious surface coverage (R 2 = 0.90) with sediment accumulation rates ranging from 0.06 to 0.50 cm y -1 . These rates of sediment accumulation and consequent pond volume loss were lower than anticipated based on maintenance guidelines provided by the State. Nalkanes were used as biomarkers of sediment source; the derived terrestrial aquatic ratio (TAR HC ) index was strongly correlated with sediment accumulation rate (R 2 = 0.71) which, in conjunction with high C/N ratios (16-33), suggests that terrestrial biomass drives this sediment accumulation, with relatively minimal contributions from algal derived material. This is counter to expectations that were based on the high algal productivity generally observed in stormwater ponds and previous studies of natural lakes. Sediment C and nutrient concentrations were consistent among ponds, such that differences in burial rates were a simple function of bulk sediment accumulation rate. These burial rates (C: 8.7-161 g m -2 y -1 , N: 0.65-6.4 g m -2 y -1 , P: 0.238-4.13 g m -2 y -1 ) were similar to those observed in natural lake systems, but lower than those observed in reservoirs or impoundments. Though individual ponds were small in area (930-41,000 m 2 ), they are regionally abundant and, when mean burial rates are extrapolated to the regional scale (% 21,000 ponds), ultimately sequester 2.0 9 10 9 g C y -1 , Received 28 July 2017; accepted 11 November 2017; published online 16 January 2018Electronic supplementary material: The online version of this article (https://doi.org/10.1007/s10021-017-0207-z) contains supplementary material, which is available to authorized users. Authors' Contribution: EMS and CBN were responsible for the original conception and design of this study, with input from WFS and LAZ. Sample collection and bathymetric mapping were performed by WFS. Phosphorus analyses were performed by WFS with assistance from CBN. Carbon and nitrogen analyses were performed by WFS with assistance from EMS. N-alkane analyses were performed by WFS with assistance from LAZ. WFS, CBN, EMS, and LAZ were responsible for data interpretation. WFS drafted the manuscript and all authors contributed critical revisions. *Corresponding author; e-mail: William.Schroer@uga.edu Ecosystems (2018) 21: 1118-1138 https://doi.org/10.1007/s10021-017-0207-z Ó 2018 The Author(s). This article is an open access publication 1118 9.5 9 10 7 g N y -1 , and 3.7 9 10 7 g P y -1 in the coastal region of South Carolina alone. Stormwater ponds represent a relatively new but increasingly...

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“…Lipids, the main structural component in living organisms, are well suited for such studies: to detect the sources and distribution of OM in marginal seas. For example, the presence of nC27, nC29, and nC31 n-alkanes indicates that land-plant epicuticular waxes have been important sources of land lipids to sediment (Eglinton and Hamilton, 1967 in cell membranes, and they generally represent terrestrial higherplant input to OM pool in sediment (Gagosian et al, 1983). In this study, lipids (n-alkanes, n-alkanols and selected sterols) were extracted in the sediments from different marine areas (SBS, Northern Yellow Sea (NYS) and Southern Yellow Sea (SYS)).…”

Section: Introductionmentioning

confidence: 99%

Sources and preservation of sedimentary organic matter in the Southern Bohai Sea and the Yellow Sea: Evidence from lipid biomarkers

Lin

Wang

Chen

et al. 2014

Marine Pollution Bulletin

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a b s t r a c tThe region of Southern Bohai Sea (SBS) and Yellow Sea (YS) represents one of the best examples of large river-dominated ocean margins. The transport and accumulation of sediments played a primary role in distribution of the lipids in the region and could lead to a preferential accumulation of these more refractory land-based lipids. The spatial distribution of total organic carbon (TOC) matched with the lipid distributions over the shelf, and high TOC presented in the central YS, but TOC burial fluxes decreased from 110 ton/km 2 /yr of SBS to 25-32 ton/km 2 /yr of YS. Good correlations were observed between terrestrial n-alkanes and TOC in the sediments of SBS and northern YS, but they were poor for southern YS, meanwhile higher ratios of nC27 + nC29 + nC31/nC15 + nC17 + nC19 (12 ± 6) were observed in SBS, and lower in YS (2.2 ± 1.0), suggesting the Yellow River discharge was an important source of terrestrial organic matter to the shelf.

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Leaf Epicuticular Waxes

Cited by 2,491 publications

References 77 publications

Distribution of lipid compounds in sediments from Conceição Lagoon, Santa Catarina Island, Brazil

Distribution of lipid compounds in sediments from Conceição Lagoon, Santa Catarina Island, Brazil

Drivers of Sediment Accumulation and Nutrient Burial in Coastal Stormwater Detention Ponds, South Carolina, USA

Sources and preservation of sedimentary organic matter in the Southern Bohai Sea and the Yellow Sea: Evidence from lipid biomarkers

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