Lignin oxidation products (vanillyl, syringil and cummaryl phenols), and δ¹³C were measured in a variety of land and marine samples collected in Inner Puck Bay – dominated by marine vascular plants, small river run-off, and shallow bottom, and in Gdańsk Bay – characterized by large river run-off, small marine vascular plants population, and the average depth exceeding euphotic zone. Both study areas are parts of the Gdańsk Basin, Southern Baltic.

Typical δ¹³C values (δ¹³C = -28‰) and both composition and concentrations of lignin phenols were measured in samples originating from land. Small, yet easily measurable amounts of lignin phenols were found in marine vascular plants biomass (Σ8 = 90 µg/100 mg organic matter). The biomass was characterized by exceptionally high δ¹³C values (-12‰). No lignin phenols and typical δ¹³C values (-22‰) were measured in marine phytoplankton biomass. δ¹³C and both composition and content of lignin phenols in organic matter of surface sediments collected in the study area fall in the range marked by the end members.

The proportion of land derived organic matter calculated using lignin phenols, or δ¹³C in Gdańsk Bay were comparable, while in Puck Bay they differed substantially. It was concluded that a) in areas with substantial bottom coverage with vascular plants the two end members approach, usually employed to establish the contribution of organic matter sources, is insufficient, b) organic matter originating from three sources: riverine, phytoplankton, and vascular plants contribute to sedimentary organic matter in Puck Bay with the respective proportion 30:40:30.

木质素氧化产物（香草，syringil和cummaryl酚），和δ ¹³ C下在各种陆地和内普克湾收集海洋样品测量-通过海洋维管植物，小河流径流和浅底部，并且在主导格但斯克湾–特点是大河流径流，少量维管植物，平均深度超过富营养区。这两个研究区都是波罗的海南部格但斯克盆地的一部分。

典型δ ¹³ C值（δ ¹³ C = -28‰）和二者组合物和木质素酚的浓度在从土地样品始发进行测定。在海洋维管植物生物量中发现了少量但易于测量的木质素酚（Σ8= 90 µg / 100 mg有机物）。所述生物质的特征是异常高的δ ¹³ C值（‰-12）。没有木质素酚和典型δ ¹³ C值（‰-22）在海洋浮游植物生物质进行测定。δ ¹³ C和二者组合物和木质素中在由端部构件标注的范围研究区域秋天收集表面沉积物的有机质酚含量。

土地的比例使用衍生木质素酚计算的有机物，或Δ ¹³在斯克湾C组相当，而在普克湾它们基本上不同。结论是：a）在维管植物底部大量覆盖的区域，通常采用两个末端成员方法来确定有机物质的来源是不够的； b）来自三个来源的有机物：河，浮游植物和维管束植物在帕克湾的沉积有机质中所占的比例为30:40:30。