Mario R Sabbatini

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Elodea canadensis Michx. and Myriophyllum spicatum L. are widespread nuisance aquatic plant species. Their ecology is regarded as similar. Both species have been previously classified in terms of established-phase survival strategy as ‘competitive disturbance-tolerant’ species. Experimental data are presented to show that although this broad categorisation(More)
BACKGROUND AND AIMS Models based on thermal-time approaches have been a useful tool for characterizing and predicting seed germination and dormancy release in relation to time and temperature. The aims of the present work were to evaluate the relative accuracy of different thermal-time approaches for the description of germination in Lithospermum arvense(More)
This study examines the relationships between fish, environmental variables and submerged macrophytes within the irrigation system of the lower valley of the Río Colorado in southern Argentina. Using Canonical Correspondence Analysis (CCA), the strongest environmental gradients detected were conductivity and carp ( Cyprinus carpi) biomass per unit area of(More)
The abundance of submerged weeds, in relation to management regime and environmental factors, was surveyed during 1992 and 1993 in drainage channels located in four geographically-distinct areas of Britain. The aim of the study was to ascertain, using a multivariate approach, the degree to which species survival strategy and vegetation could be related to(More)
The irrigation district of the lower valley of Río Colorado (62° 37′ W, 39° 23′ S) was examined during 1995 and 1996 to evaluate propagule bank abundance and regeneration in five irrigation and five drainage channel sites. Six 15 cm deep cores from each site were collected in late winter and sectioned into two subsamples. One was sieved to identify taxa and(More)
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