(1) Background: this study describes bioactive compounds in the following halophytes: Sarcocornia (S. alpini, S. pruinosa, and S. perennis) and Arthrocnemum (A. macrostachyum). The material comes from: coastal marshes in Tinto River, Guadiana River, and some interior provinces from the Iberian Peninsula. (2) Methods: the techniques used were Folin–Ciocalteu, GC-MS, and ESI-MS/MS. (3) Results: Five phenolic acids were found in Sarcocornia: trans-cinnamic, salicylic, veratric, coumaric, and caffeic acids. In addition, in Arthronemum, ferulic acid was also detected. The obtained flavonoids were cyanidin-3-O-arabinoside, luteolin-7-glucoside, dihydroquercetin, and p-coumaroyl-glucoside. They also presented fatty acids, such as palmitic, linoleic, and oleic acids in Sarcocornia, while palmitic, linolenic, and stearic acids were the main fatty acids in A. macrostachyum. (4) Conclusions: the high diversity of the compounds identified confirms the relation between nutritional interest and salt tolerance in halophytes.

Resumen: Rufo Nieto, L. & Fuente, V. de la. Vegetación herbácea vivaz de la cuenca del Río Tinto (Huelva, España). Lazaroa 32: 73-89 (2011).Se presentan los resultados del estudio fitosociológico de la vegetación herbácea vivaz de la cuenca del río Tinto. Se reconocen en este estudio 14 comunidades pertenecientes a las clases Isoeto-Nanojuncetea (Loto hispidi-Chaetopogonetum fasciculati), Phragmito-Magnocaricetea (Typho angustifoliae-Phragmitetum australis, Glycerio declinatae-Eleocharitetum palustris, Glycerio declinatae-Oenanthetum crocatae, Glycerio declinatae-Apietum nodiflori, Caricetum tartessianae), Phagnalo-Rumicetea indurati (Phagnalo saxatilis-Rumicetum indurati), Artemisetea vulgaris (Inulo viscosae-Piptatheretum miliacei), Lygeo-Stipetea (Andryalo laxiflorae-Hyparrhenietum hirtae), Stipo giganteae-Agrostietea castellanae (Gaudinio fragilis-Agrostietum castellanae) y Molinio-Arrhenatheretea (Juncetum rugoso-effusi, Junco rugosi-Ericetum andevalensis, Trifolio resupinati-Holoschoenetum, Imperato cylindricae-Scirpetum holoschoeni). De cada unidad se aportan los datos correspondientes incluyéndose los inventarios realizados en el territorio estudiado.Palabras clave: Vegetación herbácea vivaz, río Tinto, Huelva.Abstract: Rufo Nieto, L. & Fuente, V. de la. Herbaceous perennial vegetation of the Tinto River basin (Huelva, Spain). Lazaroa 32: 73-89 (2011).The results of a phytosociological study on herbaceous perennial vegetation of the Tinto River basin are presented. Fourteen associations belonging to Isoeto-Nanojuncetea (Loto hispidi-Chaetopogonetum fasciculati), Phragmito-Magnocaricetea (Typho angustifoliae-Phragmitetum australis, Glycerio declinatae-Eleocharitetum palustris, Glycerio declinatae-Oenanthetum crocatae, Glycerio declinatae-Apietum nodiflori, Caricetum tartessianae), Phagnalo-Rumicetea indurati (Phagnalo saxatilis-Rumicetum indurati), Artemisetea vulgaris (Inulo viscosae-Piptatheretum miliacei), Lygeo-Stipetea (Andryalo laxiflorae-Hyparrhenietum hirtae), Stipo giganteae-Agrostietea castellanae (Gaudinio fragilis-Agrostietum castellanae), and Molinio-Arrhenatheretea (Juncetum rugoso-effusi, Junco rugosi-Ericetum andevalensis, Trifolio resupinati-Holoschoenetum, Imperato cylindricae-Scirpetum holoschoeni), have been recognized. We also include a selection of relevés taken in the study area.