Monitoring the Vitality of Isoëtes Lacustris by Using a Non-Destructive Method

Open access


The aim of ongoing studies was to expand the non-destructive monitoring of Isoëtes lacustris (Vöge 2004) resulting in a description of the vitality and structure of the population. The influence of the environment on the development of the plant was the subject of extended studies carried out between 1995 and 2014 in more than 100 lakes throughout Europe. The environment was characterized through conductivity, pH and Secchi depth of the lake water and the accompanying submersed plant species, as well as the plant performance through the mean number of leaves of 20 sporogenous plants. The counting of the leaves was performed whilst diving. The vitality level was defined based on Vöge (2004) and related to the environmental conditions; these are referred to in the context. The inventory of the accompanying plant species may reflect a changing environment. The method is demonstrated through case examples. A highly significant correlation between the mean and the smallest number of leaves of sporogenous plants enables separating juvenile from adult plants. Finally, recent results show a relationship between the vitality level and the structure of the population.

If the inline PDF is not rendering correctly, you can download the PDF file here.

  • Boston H.L. Adams M.S. 1987 Productivity growth and photosynthesis of two small “isoëtid” plants Littorella uniflora and Isoëtes macrospora J. Ecol. 75: 333-350.

  • Ellenberg H. 1979 Zeigerwerte der Gefãßpflanzen Mitteleurapas Scripta. Geobot. 9: 1-122.

  • Gacia E. Ballesteros E. 1994 Production of Isoëtes lacustris in a Pyrenean lake: seasonality and ecological factors involved in the growing period Aquat. Bot. 48: 77-89.

  • Grzybowski M. Endler Z. Jaworska B. 2008 Disappearance of Isoëtes lacustris localities and changes in the phytolittoral of Lake Długie near Łukta Limnol. Rev. 8(1-2): 69-77.

  • Horn K. Paetzold F. 1999 Aktuelle Bestandssituation und Gefãhrdung des Stachelsporigen Brachsenkrautes (Isoëtes echinospora DURIEU) in Baden-Württemberg Carolinea 57: 43-56.

  • Keeley J.E. Busch G. 1984 Carbon assimilation characteristics of the aquatic CAM plant Isoëtes howelli Plant Physiol. 76: 525-530.

  • Krause W. King J.J. 1994 The ecological status of Lough Corrib Ireland as indicated by physiographic factors water chemistry and macrophyte flora Vegetatio 110: 149-161.

  • Mãkirinta U. 1978 Spektrale Lichtmessungen im freien Wasser und in der Wasservegetation des Sees Kukkia Südfinnland unter besonderer Berücksichtigung der Zonation Aquilo Ser. Bot. 16: 39-53.

  • Rintanen T. 1996 Changes in the flora and vegetation of 113 Finnish lakes during 40 years Ann. Bot. Fennici 33: 101-122.

  • Roelofs J.G.M. Schuurkes J.A.A.R. Smits A.J.M. 1983 Impacts of acidification and eutrophication on macrophyte communities in soft waters. II. Experimental studies Aquat. Bot. 18: 389-411.

  • Rørslett B. Brettum P. 1989 The genus Isoëtes in Scandinavia: An ecological review and perspectives Aquat. Bot. 35: 223-261.

  • Sand-Jensen K. Søndergaard M. 1981 Phytoplankton and epiphyte development and their shading effect on submerged macrophytes in lakes of different nutrient status Int. Revue ges. Hydrobiol. 66: 529-552.

  • Schuettpelz E. Hoot S.B. 2006 Inferring the root of Isoëtes: Exploring alternatives in the absence of an acceptable Outgroup Syst. Bot. 31: 258-270.

  • Szmeja J. 1997 Evolution and conservation of Lobelia lake in Poland Fragm. Flor. Geobot. 42: 89-94.

  • Vlasov B.P. 2012 Geoecological features of belarus lakes - the habitats of relict species Isoëtes lacustris L. Acta Geogr. Silesiana 12: 57-64.

  • Vöge M. 1988 Tauchuntersuchungen an der submersen Vegetation in skandinavischen Seen unter besonderer Berücksichtigung der Isoetiden-Vegetation Limnologica 19(2): 89-107.

  • Vöge M. 1992 Tauchuntersuchungen an der submersen Vegetation in 13 Seen der Deutschland unter besonderer Berücksichtigung der Isoetiden-Vegetation Limnologica. 22(1): 82-96.

  • Vöge M. 1997a Plant size and fertility of Isoëtes lacustris L. in 20 lakes of Scandinavia: a field study Arch. Hydrobiol. 139: 171-185.

  • Vöge M. 1997b Number of leaves per rosette and fertility characters of the quillwort Isoëtes lacustris L. in 50 lakes of Europe: a field study Arch. Hydrobiol. 139: 415-431.

  • Vöge M. 2003 Environmentally related demography: Field studies on Isoëtes lacustris L. (Lycophyta Isoetaceae) in Europe [in:] Chandra S. Srivastava M. (eds) Pteridology in the New Millennium Kluwer Acad. Publ. Dordrecht: 233-260.

  • Vöge M. 2004 Non-destructive assessing and monitoring of populations of Isoëtes lacustris L. Limnologica 34: 147-153.

Journal information
All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 182 105 1
PDF Downloads 81 58 6