A combined micropalaeontological, taphonomical and sedimentological study was carried out in the non-marine Barremian of the Maestrat Basin (E Iberian Chain) to elucidate the palaeoecology of Barremian charophytes. Understanding the palaeoecology of fossil charophytes is of prime importance for the accurate application of charophyte biozonations, since most species used as biostratigraphic markers and/or biozone index species are restricted to facies formed in a particular environment. Five charophyte biocoenoses were distinguished. (1) Charophyte association from freshwater alkaline lakes receiving low clastic input, mainly composed of Atopochara trivolvis var. triquetra, Clavator harrisii, Ascidiella stellata, and A. triquetra. The thalli known as Munieria grambastii, corresponding to Clavator utricles, were extremely abundant in the shallowest facies of the lake margins, and Hemiclavator-rich populations were also locally dominant. (2) An association characteristic of freshwater alkaline lakes with high clastic input was mainly composed of Echinochara lazarii, Globator maillardii var. trochiliscoides, A. trivolvis var. triquetra, C. harrisii, Hemiclavator neimongolensis var. neimongolensis, and locally also Clavator calcitrapus. (3) Monospecific populations of Porochara maestratica thrived in brackish settings with little clastic influence, whereas (4) monospecific E. lazarii populations thrived in clastic-influenced brackish settings. (5) A charophyte association grew in lakes that developed in mudflat to floodplain environments and was mainly constituted by E. lazarii, A. trivolvis var. triquetra, and C. harrisii var. harrisii and var. reyi. Accordingly, the palaeoenvironmental conditions inferred indicate that most of the charophyte species were controlled by (i) bathymetry, (ii) clastic content in the sedimentary environment and (iii) salinity. The stratigraphic succession studied shows an upwards increase in clastic content from the base to the top, which is associated with the more humid period recorded along the margins of the Tethys and the Boreal realm during the early Barremian–early late Barremian. In consequence, those species restricted to clastic-poor settings are constrained to the lower part of the section, whereas those taxa that were able to thrive in clastic-rich settings persisted throughout the entire section. This observation establishes a link between the changes observed in the charophyte floras recognized and the environmental changes that occurred during the Barremian in western Europe.

在马埃斯特拉特盆地（伊比利亚链东部）的非海相巴列姆阶中进行了一项微型古生物学、埋藏学和沉积学的综合研究，以阐明巴列姆阶轮藻的古生态学。了解轮藻化石的古生态对于轮藻生物区划的准确应用至关重要，因为大多数用作生物地层标记和/或生物区指数物种的物种仅限于在特定环境中形成的相。区分了五种轮藻生物群落。 (1) 来自接收低碎屑输入的淡水碱性湖泊的轮藻群落，主要由Atopochara trivolvis var.组成。 triquetra、Clavator harrisii、Ascidiella stellata和A. triquetra。湖缘最浅相的Munieria grambastii菌体（相当于Clavator胞囊）极其丰富，富含Hemiclavator的种群也在局部占优势。 (2)高碎屑输入淡水碱性湖泊的组合特征主要是Echinochara lazarii、Globator maillardii var. trochiliscoides , A. trivolvis变种。triquetra , C. harrisii , Hemiclavator neimongolensis var. neimongolensis，当地也有Clavator calcitrapus。 (3) Porochara maestratica的单一种群在几乎没有碎屑影响的咸水环境中繁衍生息，而 (4) 单特异性E. lazarii种群在受碎屑影响的咸水环境中繁盛。 (5)在泥滩到洪泛区环境中发育的湖泊中生长有轮藻群落，主要由E. lazarii、A. trivolvis var.组成。 triquetra和C. harrisii var.哈里斯和变种。热依。因此，推断的古环境条件表明，大多数轮藻物种受（i）测深、（ii）沉积环境中的碎屑含量和（iii）盐度控制。研究的地层序列显示，碎屑含量从底部到顶部向上增加，这与巴列姆早期至巴列姆晚期早期沿特提斯和北方地区边缘记录的更潮湿时期有关。因此，那些仅限于贫碎屑环境的物种被限制在该部分的下部，而那些能够在富含碎屑的环境中繁衍生息的类群则在整个部分中持续存在。这一观察结果在所发现的轮藻植物区系中观察到的变化与西欧巴列姆纪期间发生的环境变化之间建立了联系。