Phytosociological research on temporary ponds in Apulia (southern Italy)
2020
The ephemeral hygrophilous vegetation occurring in the temporary ponds of Apulia (southern Italy) was studied
following the phytosociological approach. On the base of 153 phytosociological releves carried out during the period 2015-
2018, 19 associations were identified, of which 16 described for the first time. All the associations belong to the
Isoeto-
Nanojuncetea class. The surveyed associations can be arranged in two orders, such as
Isoetetalia, including those with a
winter-spring cycle and
Nanocyperetalia, regarding those with a summertime cycle. The identified associations have been
examined in detail, and for each one, we provided a phytosociological table. The communities belonging to the
Isoetetalia
are 17 and arranged in four alliances (
Isoetion
,
Preslion cervinae
,
Cicendio filiformis-Solenopsion laurentiae
,
Agrostion
salmanticae
); instead, those ones of
Nanocyperetalia
are two both included in the
Verbenion supinae.
In order to highlight
the relationships among the associations, all the releves used for this investigation are processed. Overall, this analysis
confirms the autonomy of the associations, grouping them according to the syntaxonomic arrangement proposed by the
authors. Taxonomic investigations on the flora occurring in these habitats allowed the detection of two new subspecies of
Solenopsis laurentia
, both with a different autoecology.
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