The ecology of Ruppia-dominated communities in western Europe
Verhoeven, Joseph Thomas Antonius
ISBN:
Jaar:
1980
Kwaliteit:
Zeer goed
Uitgever:
[S.l. : s.n.], [Nijmegen] : Stichting Studentenpers Nijmegen
Beschrijving:
ill,krt, Proefschrift Nijmegen; 222 p, 24 cm
Inhoudelijke beschrijving:
This paper contains the first of three parts of a study of the ecology of Ruppia-dominated communities. After introductory remarks on the problematic subdivision of the genus Ruppia and on its distribution in the world, a detailed picture is given of the distribution of the European Ruppia taxa in three study areas at different latitudes (Finland, The Netherlands, S. France), in relation to important environmental factors, e.g. salinity, size and permanence of the water body, substrate type. Ruppia cirrhosa (Petagna) Grande appeared to be characteristic for medium and large permanent water bodies with an annual mean salinity between 2 and 35‰ Cl − (total range 1.5-60‰ Cl − ). Ruppia maritima var. maritima L. proved to occur mainly in small and medium-size permanent water bodies with an annual mean salinity between 0.5 and 8‰ Cl − (total range 0.3-15‰ Cl − ), whereas R. maritima var. brevirostris (Agardh) Aschers. Graebn. proved to be characteristic for temporary waters of various sizes
Specifieke beschrijving:
