Habitat differentiation and geographic separation of "Isoetes velata" populations in central Iberian Peninsula

  1. Molina, José Antonio 1
  1. 1 Universidad Complutense de Madrid
    info

    Universidad Complutense de Madrid

    Madrid, España

    ROR 02p0gd045

Zeitschrift:
Botanica complutensis

ISSN: 0214-4565

Datum der Publikation: 2021

Nummer: 45

Seiten: 127-134

Art: Artikel

DOI: 10.5209/BOCM.75525 DIALNET GOOGLE SCHOLAR lock_openOpen Access editor

Andere Publikationen in: Botanica complutensis

Zusammenfassung

Populations of "Isoetes velata" were studied in order to provide more information on their habitat and distribution in the Western and Northwestern Iberian Peninsula. Habitat together with morphology of megaspores were used as diagnostic features. The form I. velata subsp. velata f. lereschii is considered here as a synonym of I. velata subsp. asturicense and therefore only two taxa remain within the species: I. velata subsp. velata and I. velata subsp. asturicense. Intermediate individuals have been found in the Western Central System. The differentiation within the I. velata group appears to be the result of gradual genetic divergence after isolation. Palaeobotanical data confirm the presence of I. velata subsp. asturicense in Late Glacial lake sediments in northwestern Spain. Cluster classification of the soft-water vegetation with Isoetes velata subsp. asturicense revealed two main groups in the Spanish Central System. A single association, the Sparganio angustifolii-Callitrichetum fontqueri which includes Iberian Atlantic stands of Sparganium angustifolium and Isoetes velata subsp. asturicense, is here recognized. Besides, a variant of the association with Eleocharis acicularis is identified in shallow temporary waters in the Western Sierra de Gredos.

€ Finanzierung ansehen

Informationen zur Finanzierung

I would like to thank to Salvador Rivas-Mart?nez and Carmen Prada for their valuable comments on the manuscript.

Geldgeber

Bibliographische Referenzen

  • Benavent-González, A., Lumbreras, A., Molina, J.A. 2014. Plant communities as a tool for setting priorities in biodiversity conservation: a novel approach to Iberian aquatic vegetation. Biodivers. Conserv. 23: 2135-2154. DOI https://doi.org/10.1007/s10531-014-0709-3.
  • Botta-Dukát, Z., Chytrý, M., Hájková, P. & Havlová, M. 2005. Vegetation of lowland wet meadows along a climatic continentality gradient in central Europe. Preslia 77: 89-111.
  • Casaseca, B., Guráldez, X. & Rico, E. 1988. Precisiones florísticas sobre la alta montaña extremeña. Monogr. Inst. Pirenaico Ecol. 4: 143-147.
  • Castroviejo, S., Nieto, G. & Rico, E. 1983. Notas y comentarios sobre la flora del Sistema Central español: sierras de Villafranca, El Barco y Béjar. Anales Jard. Bot. Madrid 40: 151-161.
  • Derrick, L.N., Jermy, A.C. & Paul, A.M. 1987. Checklist of European pteridophytes. Sommerfeltia 6: V-XX; 1-94.
  • Hickey, R.J. 1986. Isoëtes megaspore surface morphology: nomenclature, variation and systemaic importance. Amer. Fern. J. 76: 1-16.
  • Hickey, R.J., Taylor, W.C. & Luebke, N.T. 1989. The species concept in Pteridophyta with special reference to Isoëtes. Amer. Fern. J. 79: 78-89.
  • Kott, L.S. & Britton, D.M. 1985. Role of morphological characteristics of leaves and the sporangial region in the taxonomy of Isoetes in northeaster North America. Amer. Fern J. 75: 44-55.
  • Maldonado, F.J. 1994. Evolución Tardiglaciar y Holocena de la vegetación en los macizos del noroeste peninsular. Tesis Doctoral E.T.S.I. de Montes. Universidad Politécnica de Madrid, Madrid. 171 pp.
  • Molina J.A. 2005. The vegetation of temporary ponds with Isoetes in the Iberian Peninsula. Phytocoenologia 35(2-3): 219-230.
  • Molina, J.A. 2017. Aquatic and Wetland Vegetation of the Iberian Peninsula. In: Loidi, J. (ed.), The Vegetation of the Iberian Peninsula vol 2: 355-396. Springer
  • Molina, J.A., Sardinero, S. & Pertíñez, C. 1999. Soft-water vegetation (Littorellion) in Spanish mountains. Folia Geobot. 34: 253-260.
  • Prada, C. 1983. El género Isoetes L. en la Península Ibérica. Acta Bot. Malacitana 8: 73-100.
  • Prada, C. 1986. Isoetes L. In: Castroviejo, S. et al (eds.). Flora iberica 1: 15-20. Real Jardín Botánico. CSIC. Madrid
  • Rivas-Martínez, S., Costa, M., Izco, J. & Sáenz, C. 1982. Flora Matritensis, I (Pteridophyta). Lazaroa 3: 25-61.
  • Romero, M.I. & Real, C. 2005. A morphometric study of three closely related taxa in the European Isoetes velata complex. Bot. J. Linn. Soc. 148: 459–464.https://doi.org/10.1111/j.1095-8339.2005.00419.x
  • Schaminée, J.H.J, Westhoff, V. & Arts, G.H.P. 1992. Die Strandlinggesellschaften (Littorelletea Br.-Bl. & Tüxen 1943) der Niederlande in europäischem Rahmen gefatβt. Phytocoenologia 20: 529-558.
  • Taylor, W.C. & Hickey, R.J. 1992. Habitat, evolution and speciation in Isoetes. Ann. Missouri Bot. Gard. 79: 613-622.
  • Tichý, L. 2002. JUICE, software for vegetation classification. J. Veg. Sci. 13: 451–453.
  • Troia, A. & Rouhan, G. 2018. Clarifying the nomenclature of some Euro-Mediterranean quillworts (Isoetes, Isoetaceae): Indicator species and species of conservation concern. Taxon 67: 996–1004.
Fuente de los datos: Dialnet