Results 101 to 110 of about 3,457 (217)
Aquatic macrophytes in Doñana protected area (SW Spain) : an overview [PDF]
A big portion of the Doñana protected areas corresponds to wetlands; in them aquatic macrophytes are the main primary producers and play also other important ecological functions.
Cirujano Bracamonte, Santos +3 more
core
El objetivo de la presente investigación fue determinar la diversidad de fitoplancton y, con base en su composición, establecer el estado trófico actual del lago San Pablo.
Andrés Arévalo +2 more
doaj +1 more source
Mannitol biosynthesis in algae : more widespread and diverse than previously thought [PDF]
Li, Yi +2 more
core +1 more source
Palaeobiology of Early Carboniferous lacustrine biota of the Waaipoort Formation (Witteberg Group), South Africa [PDF]
The Early Carboniferous (Visean) Waaipoort Formation (Cape Supergroup, Witteberg Group) is a heterolithic sandstone dominated formation containing apatite-rich and calcite-rich fossiliferous nodules.
Evans, F J
core
Improved Methods for Acetocarmine and Haematoxylin Staining to Visualize Chromosomes in the Filamentous Green Alga Zygnema (Charophyta). [PDF]
Rittmeier N, Holzinger A.
europepmc +1 more source
The Charophyta of the Netherlands have been hitherto almost neglected. As far as I know only the following papers are dealing with the matter: VAN DEN BOSCH, R. B., in Ned. Kruidk. Archief 1, 1846, p. 100, p. 289. “II 1851 p. 225. both preliminary works to Prodromus Florae Batavae II, 2, 1853, p. 186—189.
openaire +1 more source
Colectores de algas de México (1787-1954)
Se presenta información biográfica y bibliográfica de los colectores de algas de México durante el período de 1787-1954. Los datos fueron obtenidos mediante la consulta de herbarios nacionales y extranjeros, la comunicación directa con los curadores de
Jos\u00E9 Luis God\u00EDnez Ortega
doaj
Some preliminary experiments on physiology of Charophyta
1. The rliizoids represent the main organs of absorption of nutritive materials by Charophyta. The stem i. e. thallus surface has in this respect but a subordinate function. They can therefore as far as absorption is concerned be compared to the phanerogamous submerse water-plants. 2.
Vouk, Vale, Benzinger, Franjo
openaire +1 more source
. In this contribution we describe planktonic assemblages, comprising their taxonomic composition and palaeoecological attributes, from the La Colonia Formation, Patagonia, Argentina. The palynological samples are from the section exposed at Estancia San
C. Marcela Borel +3 more
doaj
The l’Hort de la Boquera site is located in the northeastern part of Iberia and its stone tool assemblage includes up to 25,000 flint artefacts. This is the first approach to the analysis of the raw material through an archaeopetrological study.
Mar Rey-Solé +5 more
doaj

