This work introduces graphical methods documenting density, diversity (species richness combined with heterogeneity) and similarity in combined diagrams for estimating the influence of environmental and taphonomic factors in living (LAs) and dead (DAs) assemblages. In this paper, the diagrams compare: 1) densities per 1 g of sediment expressed in cubic squares; 2) diversities based on rarefaction species richness (x-axis) and Shannon H rarefaction (y-axis), both extended to infinity by the logistic Hull equation, and 3) similarity diagrams based on cosine measures (x-axis) and Spearman correlation coefficients (y-axis). Diagrams were exemplified for LAs and DAs found at 53 stations along channels and intertidal areas of the Aveiro Lagoon (Portugal). Eight ‘routes’ characterized by different trends in the distribution of the analyzed biotic parameters were recognized in six regions of the Aveiro Lagoon: ‘port area’, ‘central lagoon’, ‘northeast lagoon’, ‘northern and southern extremities of the lagoon’ and ‘city area’. In addition, Detrended Correspondence Analyses (DCA) based on diversity diagrams were performed to show the influence of environmental parameters, especially grain size, salinity, and pH, on the average species composition in each route. The comparative diagrams allow deduction about the impact of parameters that simultaneously affect LAs and DAs, such as hydrodynamics, post-mortem tests dissolution, physicochemical parameters, excessive contribution of organic matter, oxygen depletion, and pollution by metals. Based on these diagrams, the most favorable environments due to the most remarkable development and diversity of LAs and DAs are located in protected coves of the Aveiro Lagoon mouth.

这项工作引入了图形方法，记录组合图中的密度、多样性（物种丰富度与异质性相结合）和相似性，以估计环境和埋藏因素对活体（LA）和死体（DA）组合的影响。在本文中，图表比较了：1）每 1 克沉积物的密度，以立方表示；2) 基于稀疏物种丰富度（x 轴）和 Shannon H 稀疏度（y 轴）的多样性，两者均通过逻辑赫尔方程扩展到无穷大，以及 3) 基于余弦测量（x 轴）和 Spearman 相关性的相似图系数（y 轴）。图表举例说明了在阿威罗河道和潮间带地区的 53 个站点发现的 LA 和 DA泻湖（葡萄牙）。在阿威罗泻湖的六个区域中识别出了八条以不同趋势分析的生物参数分布为特征的“路线”：“港口区”、“中央泻湖”、“东北泻湖”、“泻湖的北端和南端”和“城市区域”。此外，还进行了基于多样性图的去趋势对应分析（DCA），以显示环境参数的影响，特别是颗粒尺寸，盐度、pH 值、每条路线的平均物种组成。比较图可以推断同时影响 LA 和 DA 的参数的影响，例如流体动力学、尸检溶解、物理化学参数、有机物的过度贡献、氧气消耗和金属污染。根据这些图表，由于 LA 和 DAs 最显着的发展和多样性，最有利的环境位于阿威罗泻湖口的受保护海湾。