Analele ştiinţifice ale Universităţii “Al. I. Cuza” Iaşi Tomul LVI, fasc. 1, s. II a. Biologie vegetală, 2010

CONTRIBUTIONS TO THE STUDY OF FLORA AND VEGETATION FROM BASIN VALEA MORISCA

C. TĂNASE*, N. ŞTEFAN*

Abstract. This paper contains preliminary results obtained in the period 2009-2010, materialized in flora conspect, cenotaxonomic conspect and analysis of aquatic and marsh flora in the territory Valea Morisca. The flora conspect (aquatic and marsh plants) contains 216 species and subspecies belonging to 123 kind and 48 families. The ecosystems investigated were identified 17 plant associations, belonging to 3 classes, 7 orders and 11 alliances. Key works: aquatic and marsh plants, Valea Morisca.

Introduction

Valea Morisca is located in the Botosani county in northeast Plain Moldavia, with

an area of 224 square kilometers. It is characterized by the general orientation of the valleys to the north-west to south-east, with frequent asymmetry due to geological structure. The frequency of categories of altitude shows that most hills have heights ranging from 140-200 m. The most common soils are chernozem category in various stages of evolution.

Hydrographic network for Valea Morisca is characterized by the presence of a chain of ponds met along the river Morisca [9]. Valea Morisca has its origin in the forest Crow, near Dorohoi. It can be considered a stream with permanent flow regime mainly due to the leakage from fish ponds: Lipovanul and Iazul Mare of Brăieşti, Staruşte and Jianu of Roma, Iazul Domnesc (Melik) and Ghidu, fish nursery, Pârlogeanu ponds and Popăuţi of Costeşti and Stăuceni ponds [10]. The region is located in an area with excessive temperate -continental. The annual average precipitation is 566.4 mm, prevailing winds are from north east [10].

From the above data result that Valea Morişca is located in an area with excessive continental climate, characterized by large temperature variations, while unevenly distributed rainfall and torrential character, violent winds accompanied by blizzards in winter season and prolonged droughts in summer.

Results and Discussion

The vegetation in the area Valea Morisca is located in the region of silvosteppe

north of Moldova. Most communities of steppe grasslands, which occur fragmented in habitat study area falls within the association Taraxaco-serotinae - Festucetum valesiacae (Burduja et al. 1956, Răvăruţ et al. 1956, Sârbu, Coldea et Chifu 1999). Among other associations derived and secondary of grassland, we indicate Taraxaco - serotinae - Botriochloetum ischaemi (Burduja et al. 1956, Sârbu, Coldea et Chifu 1999). In the present study was focused on marsh and aquatic vegetation, found in area lakes, wetlands and watershed. Unit main phytosociological association is Phragmitetum vulgaris Soó 1927, of

* “Al. I. Cuza” University of Iasi, Faculty of Biology, Carol I Bd., no. 20A, 700506, Iasi, Romania. email: tanase.corneliu@yahoo.com

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stretches of reeds forming variables, along many rivers, swamps, marshes, ponds, etc., and the association Lemnetum minoris (Oberd 1957) Müller et Gorse 1960 it is caracteristique for aquatic vegetation. Other wetlands and aquatic associations are: Typhetum angustifoliae Pignatti 1953, Typhetum latifoliae, Lang 1973, Caricetum acutiformis Eggler 1933, Ceratophylletum demersi Hild,1956, Potamogetonetum pectinati Carstensen 1955, Potamogetonetum crispi Soó 1927.

The following it is presented the cenotaxonomic conspect and describing association in the Valea Morisca area.

Cls. LEMNETEA MINORIS de Bolós et Masclans 1955

Ord. LEMETALIA MINORIS de Bolós et Masclans 1955 Al. Lemnion minoris de Bolós et Masclans 1955 Lemnetum minoris

(Oberd 1957) Müller et Görs 1960 An association spread in all water basins in the studied area, well vegetate in reeds

clearings especially between the reeds strip and the shore. It presents an optimal development of the standing water ponds in the Valea Morisca. (tab. I, rel. 1,2,3,4), but can also vegetate in to easy flowing river. In general, phytocoenosis are dominated by Lemna minor and only in biotic influence, has a more pronounced development Lemna trisulca. The submerged substrate is mainly composed by Ceratophyllum demersum

Al. Riccio – Lemnion trisulcae R. Tüxen 1974 ASSOCIATION Lemnetum trisulcae Knapp et Stoffers 1962

This phytocoenosis develops in shallow depth (tab. I rel. 5, 6). The stations with Lemna trisulca are generally indicative’s for less rich waters in mineral salts and weakly influenced biotic. Besides the dominant species, we can come across: Lemna minor, Spirodela polyrhiza, Myriophyllum spicatum, Potamogeton crispus etc.

Ord. LEMNO-UTRICULARIETALIA Passarge 1978 Al. Utricularion vulgaris Passarge 1978 ASSOCIATION Lemno – Utricularietum vulgaris Sóo 1928

This association is common in the waters from studied area (tab. I, rel. 7 and 8), being mentioned in all provinces of Romania. The water has a good trophycity mineral, being not only mesotrophyc but also eutrophyc. Dominant species, Utricularia vulgaris, has a relatively low overall coverage to 30%.

Ord. HYDROCHARIETALIA Rübel 1933 Al. Ceratophyllion demersi Soó 1927 ASSOCIATION Ceratophylletum demersi Hild 1956

This phytocoenosis grows in lakes waters, ponds, canals aging, often clogged, but sunny (tab. I, rel. 9 and 10). It prefers eutrophic waters with a medium degree of mineralization. It is an association more difficult to delimit because Ceratophyllum demersum is present in numerous groups of classes Potametea and Lemnetea. The floristic composition of the association dominates Ceratophyllum demersum, which still meets with constant Lemna minor, L. trisulca, Utricularia vulgaris, Potamogeton pectinatus.

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Cls. POTAMOGETONETEA PECTINATI Tx. et Prsg. 1942 Ord. POTAMOGETONETALIA PECTINATI W. Koch 1926

Al. Potamogetion pusilli Vollmar em. Hejný 1978 ASSOCIATION Potamogetonetum pectinati Carstensen 1955

These phytocoenosis are growing in stagnate waters with low oxygen, polluted, from shallow lakes, upon a typical or softness limnosol with peaty intercalations (tab. II, rel. 1, 2, 3). Species Potamogeton pectinatus it is enlightening and quite.

ASSOCIATION Potamogetonetum crispi Soó 1927 It is very common, occupies the former irrigation channels. The resorts are rich in

organic suspensions with warm and shallow waters, favoring expansive development of these phytocenosis, where the dominant species of Potamogeton crispus, it becomes almost exclusive (tab. II, rel. 5, 6, 7).

Al. Potamogetion lucentis Rivas Martinez 1973 ASSOCIATION Myriophyllo - Potamogetonetum lucentis Soó 1934

subass. myriophylletosum verticillati Soó 1934 This association occupies large areas, preferring standing water or less weak stream, with

a depth of between 0.8 to 1.5 m. The dominant species Myriophyllum spicatum and Potamogeton lucens presents indices of abundance-dominance of the largest. Among the following elements we can recall: Potamogeton crispus, Potamogeton pusillus, Ceratophyllum demersum. In the waters of the Valea Morisca, there is the subassociation myriophylletosum verticillata Soo 1957, because these waters are meso - eutrophyc (tab. II, rel. 5,6,7).

Al. Nympheion albae Oberd. 1957 ASSOCIATION Polygonetum amphibii (natans) Sóo 1927

This association is developing clusters, in sheltered places, standing near the shore and gently flowing lakes water, ponds, canals, where they produce large accumulations of organic material. The waters have an average degree of mineralization, with reaction slightly acidic to alkaline (pH = 4.4 – 8). The characteristic and dominant species is Polygonum amphibium f. aquaticum (tab. II, rel. 11, 12, 13) Cls. PHRAGMITETEA Tx. et Prsg. 1942

Ord. PHRAGMITETALIA W. Koch 1926 em. Pign. 1953 Al. Phragmition communis Koch 1926 ASSOCIATION Scirpo - Phragmitetum W. Koch 1926

The hydrophilic phytocoenosis of this association are widespread in the Valea Morisca, occupying the small area of ponds or lakes with water. The soils on which they develop are loamy or clayey - peaty, temporarily or permanently flooded (tab. III, rel. 1-5). Characteristic and dominant species, with a greater consistency in the alliance, which prints a particular physiognomy are: Schoenoplectus lacustris and Phragmites australis.

ASSOCIATION Glycerietum maximae Hueck 1931 This association is common in the region of Valea Morisca, preferring depressions

places where water does not exceed 50 cm depth (tab. III, rel. 6, 7, 8, 9, 10). Characteristic and dominant species, Glyceria maxima, bear slightly stronger water-level variable and therefore, phytocoenosis which they relate to, may differ as cenotaxonomic and physiognomy wageclass. The species well represented in the association are: Phragmites australis, Mentha aquatica, Sparganium erectum etc.

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ASSOCIATION Typhetum latifoliae G. Lang 1973 The eutrophic phytocoenosis of the association are often spread on the territory

Valea Morisca. They inhabit shallow waters (0.2 m) and the shores of some eutrophic lakes with hydromorphic soils, rich in nutrients (tab. III, rel. 11, 12, 13, 14). Differential and dominant species are Typha latifolia, accompanied by the characteristic elements of alliance and order such as: Phragmites australis, Scirpus lacustris, Glyceria maxima, Mentha aquatica, Sparganium erectum.

ASSOCIATION Typhetum angustifoliae Pignatti 1953 The phytocoenosis of this association are stationed near the shore, where the water

depth does not exceed 0.5 to 0.8 m (tab. III, rel. 15-17). It develops between the phytocoenosis Scirpo - Phragmitetum and shore. Dominant species is Typha angustifolia, cover up to 60% of phytocoenosis.

Ord. BOLBOSCHOENETALIA MARITIMAE Eggler 1933 Al. Cirsio brachycephali - Bolboschoenion, Mučina 1993 ASSOCIATION Bolboschoenetum maritimi Eggler 1933

It is a hygrophilous and weak halophyilous association which is often found in the Valea Morişca (tab. IV, rel. 1-3). It vegetates on swampy soil, poorly halophilous, eutrophic, with excess water in the first half of the year. The associations of the studied area is developed under moderate trophicity and low in bases, being dominated by Bolboschoenus maritimus.

Ord. MAGNOCARICETALIA ELATAE Pign. 1953 Al. Magnocaricion elatae W. Koch 1926 ASSOCIATION Caricetum acutiformis Eggler 1933

These phytocoenosis are installed at the edge lakes, ponds, wetlands or temporarily flooded lands (tab. IV, rel. 4-6). The association is distributed in the form of patches or bands stationed between reeds, flooded sedges or mesohidrophilic pastores of banks. With Carex acutiformis, we frequently encounter: Carex rostrata, Galium palustre, Carex vulpina, Phragmites australis etc.

ASSOCIATION Caricetum vulpinae Novinski 1927 The phytocoenosis erected by Carex vulpina represents the external phase in the

dynamic associations of the sedges high, eutrophic, making the transition to wet grassland meadow. The phytocenosis are installed on that land which has a tendency of drying, edifying species, Carex vulpina, supporting even the duration of soil drying (tab. IV, rel. 7 and 8). The most abundant species in this association are: Carex ovalis, Carex riparia, Lysimachia nummularia, Sparganium erectum, Phragmites australis etc.

Ord. OENANTHETALIA AQUATICAE Hejný in Kopecký ex Hejný 1965 Al. Oenanthion aquaticae Hejný ex Neuhäusl 1959 ASSOCIATION Eleocharietum palustris Schennikov 1919

These phytocoenosis are widespread in rivers floodplains, in little depression, on the ponds, everywhere where the soil has an excess of humidity. (tab. IV, rel. 9 and 10). Being an association of transition from marsh vegetation in the mesophilic, in these phytocenosis are found species with wider spectrum of requirements to fluid factor. Among the most representative species recall: Eleocharis palustris, Butomus umbellatus, Stachys palustris, Phragmites australis etc.

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ASSOCIATION Oenantho- Rorippetum Lohmayer 1950 The phytocenosis dominated by Oenanthe aquatica, with lush growth, vegetate on

undeveloped land, consisting of humic and alluvial sandy shores, and those gleyic, wetlands, rich in sediments (tab. IV, rel. 11 and 12). The two co-dominant trees species, Rorippa amhibia shows a stronger growth in the first part of the growing season. These phytocoenosis come into contact with those by Scirpo-Phragmitetum or Sparganietum erection, which have many species in common. Among the most common species we can include: Butomus umbellatus, Carex vulpina, Stachys palustris etc.

REFERENCES

1. BĂCĂUANU V., 1968 – Câmpia Moldovei. Studiu geomorfologic, Ed. Academiei, Bucureşti. 2. CIOCÂRLAN V., 1988 - Flora ilustrată a Românie, Ed. Ceres, Bucureşti. 3. CHIFU T., MÂNZU C., ZAMFIRESCU O., 2006 - Flora şi vegetaţia Moldovei, Ed. Universităţii Al. I.

Cuza, Iaşi. 4. HUŢANU MARIANA, 1998 - Plante rare şi protejate din bazinul superior al Jijiei, Acta Botanica Horti

Bucurestiensis, Grăd. Bot. „D. Brandza”. 5. HUŢANU MARIANA, 2004 - Diversitatea florei vasculare, a vegetaţiei şi a macromicetelor din bazinul

Jijiei (jud. Botoşani), Ed. “Gh. Asachi”, Iaşi. 6. HUŢANU MARIANA, MITITELU D., 2000 - Flora şi vegetaţia din bazinul Jijiei superioare (jud.

Botoşani, Ed. „Universităţii Alexandru Iona Cuza”, Iasi. 7. MIHAI GH., 1967 - Câteva aspecte privind flora şi vegetaţia acvatică şi palustră din bazinul inferior al

Başeului, An. Şt. Univ. „Al. I. Cuza”, Iaşi, s. II a. Biol., 13, 1, 153-166. 8. MITITELU D., CHIFU T., 1994 - Flora şi vegetaţia judeţului Botoşani, Stud. si Comunic., Muz. Şt. Nat.

„Ioan Borcea” Bacău, 13, 109-126. 9. MITITELU D., HAJA S., 1972 - Contribuţie la flora judeţului Botoşani, Stud. şi Comunic, Muz. Şt. Nat.

Dorohoi, 111 - 112. 10. PANTAZICĂ MARIA, 1974 - Hidrografia Câmpiei Moldovei, Ed. Junimea, Iaşi, 25- 46. 11. SĂVULESCU T. (edit.), 1952-1976 - Flora României. I-XIII. Bucureşti, Ed. Academiei Române. 12. ULICIUC C., 2004 - Costeştii Botoşanilor la sfârşit de mileniu, Monografie, Ed. Axa, Botoşani, 13-24. 13. ZANOSCHI V., VIŢALARIU GH., 1979 - Contribuţii la cunoaşterea vegetaţiei acvatice şi palustre din

judeţul Botoşani. Travaux de la Stat „Stejarul”, ser. Limnologie, 1974-1975, 113-120.

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Table I. Cls. LEMNETEA MINORIS de Bolós et Masclans 1955 Association Lemnetum minoris Lemnetum trisulcae Lemno-Utricularietum vulgaris Ceratophylletum demersiRelevee No. 1 2 3 4 5 6 7 8 9 10 Water depth (cm) 50 70 90 95 100 75 140 125 130 160 Vegetation coverage ( %) 90 85 80 90 65 75 75 70 65 60Relevee surface ( m)2 8 6 10 4 6 4 8 10 4 4

Caract. ass. Lemna minor 5 4 5 5 1 1 4 4 + -Lemna trisulca - + - - 4 4 - + + -Utricularia vulgaris - - - - - - 1 + - +Ceratophyllum demersum - - - - - - - - 4 3

Lemnion minoris et Lemnetalia minoris Spirodela polyrhiza - - + + + + + - + -Hydrocharis morsus-ranae - - - - - - - - - +

Potamogetonetea Potamogeton pectinatus + 1 + - + - + + + +Potamogeton crispus + + - + + 1 + 1 - -Potamogeton trichoides - - + - - - + - - +Myriophyllum verticillatum + + - + + + - + - +Polygonum amphibium f. aquaticum - - + - - - - + - -

Phragmitetea Phragmites australis + + + + + + + + + +Stachys palustris + - + + + + - + - -Carex acutiformis + + - - - - - - - -Butomus umbellatus + + + + + + + - - -Lycopus europaeus + - + + - - - - - +Typha latifolia + + + - - - - - + -Typha angustifolia + - - + - + - + - +Mentha aquatica - + - + + - - - - -Glyceria maxima - - + + + - - - - -Equisetum palustre - - - - - + - - - -Oenanthe aquatica - - - - - - - + - -Alisma plantago-aquatica - + - + + + + + - -

Relevees location: 1, 2, 9 – Iazul Mare; 3, 6, 8 – Ghidu; 4, 5, 7, 10 – Melik

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Table II. Cls. POTAMOGETONETEA PECTINATI Tx. et Prsg. 1924 Association Potamogetonetum pectinati Potamogetometum crispi Myriophyllo -Potamogetonetum lucentis Polygonetum amphibii (natantis)Relevee No. 1 2 3 5 6 7 8 9 10 11 12 13Water depth (cm) 120 130 110 100 90 120 90 75 110 45 60 50 Vegetation coverage ( %) 85 75 70 70 75 75 75 60 70 75 70 80 Relevee surface ( m)2 4 6 6 10 8 6 4 8 4 10 16 8

Caract. as. Potamogeton pectinatus 5 4 4 + + + + + + 1 - +Potamogeton crispus + - + 4 5 4 + - + + + -Myriophyllum verticillatum - - - + - - 4 3 4 - - +Potamogeton lucens - - - - - - - + - - - -Polygonum amphibium f. aquaticum - - - - - + + + + 4 3 5

Potamogetonetea Potamogeton natans - - - - + - + + - + 1 +Potamogeton nodosus - + - - - - - - + - - -Myriophyllum spicatum - - + - - - - - - - - -Ceratophyllum demersum - - - - - - - + - - + -Potamogeton trichoides - 1 + + - - - - - - - -Potamogeton pusillus - - - - - + + - - - - -

Lemnetea Lemna minor + 1 1 1 + 1 + 1 1 1 + +Utricularia vulgaris - - + + - - - - - + - -Spirodela polyrhiza - + - - - - - - + - - +Hydrocharis morsus-ranae - + - - - - - - - - - -

Phragmitetea Phragmites australis + + - + + + + + + + - +Stachys palustris - - - + - - + + - + - -Alisma plantago-aquatica - - - + - + - + - + + -Lycopus europaeus - - - - + - - + + - - -Lythrum salicaria - - - - + - - + - - - -Ranunculus repens - - - - - - - - + - - -Mentha aquatica - - - - - - + - + - - -Schoenoplectus lacustris - - - - - - + - - - - -Oenathe aquatica - - + - - - - - - - - -Rorippa amphibia - + - - - - - - - - - -Butomus umbellatus - - - + + - - - - - + -Solanum dulcamara - - - - - + - - - - - -Thypha latifolia - - - - - - - - - - + -Veronica anagalloides - - - - - - - - - - + -Carex vulpina - - - - - - - - - + - -Galium palustre - - - - - - - - - - - +

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Veronica beccabunga - - - - - - - - - - - +Bolboschoenus maritimus - - - - - - - 1 - + + -Berula erecta - - - - - - - - - - + -

Relevees location: 1, 4, 6, 8, 12 – Iazul Mare; 2, 5, 11 – Staruste; 3, 13 – Melik; 7, 9, 10 - Ghidu

Table III. Cls. PHRAGMITETEA Tx. et Prsg. 1942 Association Scirpo-Phragmitetum Glycerietum maximae Typhetum latifoliae Typhetum angustifoliae Relevee No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17Water depth (cm) 15 - 10 30 - 5 - - 5 10 10 5 - 15 20 15 20 Vegetation coverage ( %) 95 95 90 90 98 90 95 95 90 95 90 90 95 85 100 90 95 Relevee surface ( m)2 100 50 25 40 25 25 50 100 25 100 50 100 25

Caract. as. Phragmites australis 5 5 5 4 5 + + + 1 1 1 1 + 1 1 1 + Schoenoplectus lacustris + - + 1 - - - - - - + + + 1 + 1 -Glyceria maxima + - - + + 5 5 5 4 5 + 1 + 1 + + 1 Thypha latifolia - + - - - - - + + - 4 4 5 3 + - + Typha angustifolia 1 + + 1 + + 1 - + + - + - 1 4 4 4

Phragmition communis Butomus umbellatus + - + - - + - + + - + - + + + - + Lycopus europaeus + - + + - + - - + - - + - + + + -Berula erecta + + - - - - + - - + - - - - - + - Calystegia sepium - - + - - - - - - - - - - - - - - Sparganium erectum - - - - - - - - - - + - - - - - -Rumex hydrolapathum + - - + - - - - + - - - - - - - +

Phragmitelalia Mentha aquatica + + - + + + + 1 + + - - - - 1 + +Iris pseudacorus - + + - + - + - - - - + + 1 + - - Galium palustre - + + - - + - + + - - - - - + + + Equisetum palustre - - - - + - - - - - - - - - - - +Oenanthe aquatica - - - + - - - - - - - - - - + - - Rorippa amphibia - + - - - - + - - - - - - + - + - Alisma lanceolatum - - - - - - - - + - - - - +Cicuta virosa - - - - - - - - - - + - - - - - +

Phragmitetea Alisma plantago-aquatica + - + + - + + + - + - - - - - - -Cicuta virosa - - - - - - - - - - - - - - - - - Epilobium palustre - - + - + - + - - - - - - - - - - Stachys palustris + + - + + + + + + + - - - - - - -

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Eleocharis palustris - - - + - - - + + - - - - - - - - Veronica anagalloides - + - - + - - + - + - - - - - - - Lycopus exaltatus - - - + - - - - - - - - - - - - - Bolboschoenus maritimus + - - - + - - + + - + - - - - - +Scutellaria galericulata + + - - - - + - - - - + - - + - - Carex riparia - 1 + + - + - + + - + - + + 1 - + Carex acutiformis - + - - + 1 + + + + + + + 2 + 1 1Carex vulpina - + - + - - - + - + - - + + - + - Carex ovalis - - + - - - - - - - - - - - - - - Carex pseudocyperus - - - - - - - - - - - - - - - - +Lythrum salicaria + - + + + + - - + - - + + - + - - Veronica beccabunga - - + - - - + - - - - + - - - - + Phalaris arundinacea - - - - + - - - - - - - - - - + -Lysimachia vulgaris - - + - - - - - - - - - - - + - - Myosotis scorpioides - + - - + - + + + + + + + - + + + Mentha longifolia - - + - - - - + - + - - - -Veronica anagallis-aquatica - - - + - - - - - - - - - - + - - Althaea officinalis - - + - + - + - + - - + - + + - - Symphytum officinale - + - - + + - + + - - + - + + + +Ranunculus repens - + - + + + + - + + + + + + + - + Scirpus sylvaticus - - - - - - - - - - - - - - - + -

Molinio-ArrhenatheteteaRumex crispus - - - + + + + - + - - - - - + + + Plantago major + - - + - - + - - - - - - - - - - Elymus repens - - - - + + - - + - - - - - - - -Lathyrus pratensis - - + - - - + - + - - - - - + - - Rorippa sylvestris - - + - - + - + - - - - - - - - - Rorippa austriaca - + - - - - - - - - - - - - - - -Lysimachia nummularia - - - - - - - - - - - - - - - - - Potentilla reptans + + - - + - - - - - - - - - - - - Juncus inflexus - - - + - - - - - + - - - - - - -Filipendula ulmaria - - + - - - + - - - - - - - - - - Trifolium repens - + - + - + - + + - - - - - - - - Trifolium hybridum - - + - - - - - + - - - - - - - -Juncus effusus - - - - + - - - - - - - - - - - - Agrostis stolonifera + + 1 - - + + + - + - - - - + + + Alopecurus pratensis - - - - - - + - - - - - - - - - -Alopecurus arundinaceus - - - - - - + - + + - - - - - - + Inula britannica - - - + - - - + + - - - - - - - - Potentilla reptans - - - - - - - + - + - - - - - - -

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Festuca pratensis - - - - - - - - - - - - - - + + - Epilobium hirsutum - - - - - - - - - - - - - - - + -

Bidentetea tripartiti Bidens tripartita - - - - - - - - - - + - + + - + +Rumex conglomeratus - - - - - - - - - - - + - - + - + Polygonum hydropiper - - - - - - - - - - - + + - - - - Polygonum lapathifolium - - - - - - - - - - + - - + - - -Juncus articulatus - - - - - - - - - - - + - - - - - Polygonum minus - - - - - - - - - - - - - - + - -

LemneteaLemna minor + - - + - - - - - - - - - - - - - Spirodela polyrhiza - - - + - - - - - - - - - - - - - Polygonum amphibium f. aquaticum - - - + - - - - - - - - - - - - -

Puccinellio-Salicornietea Juncus gerardi - + - - + - - - - - - - - - - - -Aster tripolium - + - + + - - - - - - - - - - - - Mentha pulegium - - - - + - - - - - - - - - - - - Trifolium fragiferum - + - + - - - - - - - - - - - - -Ranunculus sardous - - - - + - - - - - - - - - - - - Carex distans + - - + + - - - - - - - - - - - - Pulicaria vulgaris - - - + - - - - - - - - - - - - -

Relevees location: 1, 4, 7, 9, 11, 15 – Iazul Mare; 2, 5, 10, 17 – Staruşte; 3, 6, 12, 16 - Pârlogeanu; 7, 8, 13, 14 – Melik

Tabel IV. Cls. PHRAGMITETEA Tx. et Prsg. 1942 Association Bolboschoenetum maritimi Caricetum acutiformis Caricetum vulpinae Eleocharitetum palustris Oenantho -Rorippetum

Relevee No. 1 2 3 4 5 6 7 8 9 10 11 12Vegetation coverage ( %) 90 95 90 95 100 95 90 90 85 80 70 75Relevee surface (m2) 25 50 25 25 25 25 25 20 10 15 25 20

Caract. as.Bolboschoenus maritimus 4 5 4 - + - - - + + - -Carex acutiformis - - - 4 5 4 + - - - 1 +Carex vulpina - - - + + + 4 4 - - + +Eleocharis palustris - - - - - + + + 4 4 - Oenathe aquatica - - - - - - - - - - 1 3Rorippa amphibia - - - - - - - - - + 3 2

Cirsio brachycephali–Bolboschoenion et Bolboschoenetalia maritimi Juncus gerardi 1 + 1 - - - - - - - - -Aster tripolium + + - - - - - - - - - -Puccinellia distans ssp. limosa + - - - - - - - - - - -

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Schoenoplectus tabernaemontani - - + - - - - - - - - -

Carex rostrata - - - 1 + 1 - - - - - - Galium palustre + + + + + + + + + + + -Scutellaria galericulata - - - + - - - + - - - - Lythrum salicaria - - - + - + + + + + + + Lysimachia vulgaris - - - - + - + + - - - -Phalaris arundinacea - - - + - - - - - - - - Senecio paludosus - - - - - + - - - - - - Lysimachia nummularia - - - + + - - - + + - -Carex ovalis - - - - + - + - - + - - Ranunculus repens - - - - - - + 1 - - + + Myosotis scorpioides + - + - - - + + - - - -Mentha longifolia - - - + - - - + + + - - Epilobium palustre - - - - - - + - - - - -

Oenanthion aquaticae et Oenanthetalia aquaticaeButomus umbellatus - - - + + - - - 1 + 1 + Sparganium erectum - - - - - + - - - + + - Alisma plantago-aquatica - + - + + + + - + + 1 +Alisma lanceolatum - - - - - - - - + - - - Sagittaria sagittifolia - - - - - - - - - - - +

PhragmiteteaStachys palustris + + + - - - + + + + + + Carex riparia - - - - - - - - + - - Phragmites australis + + - + + + + + + + 1 +Lycopus europaeus + - - + + + - + - + + + Bolboschoenus maritimus - - - - - - - - + + - - Equisetum palustre - - + - + - + - - + - +Mentha aquatica - - - - - - + + + + + + Polygonum amphibium f. terrestre - - - - - - - - + - - - Veronica beccabunga - + - - - - - - - + - -Berula erecta - + - - - - - - + - - + Typha latifolia - - - - - - - - + - - - Myosotis scorpioides + - + - - - - - - - - -Veronica anagallis-aquatica + - - - - + - - - - + - Iris pseudacorus - - - + - - - - - - - - Epilobium parviflorum - - - + - - - - - - - -Symphytum officinale - - - + + + - - - - - - Typha angustifolia - - - - - - - - - - + -

Bidentetea tripartitae Bidens cernua - - + - - - - - - - - -

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Juncus articulatus + - - + + + + + - - + + Polygonum persicaria + - - - - - - - - - + - Rumex conglomeratus + + - - - - + - + - - -Ranunculus sceleratus - - + - - - - + - - - + Xanthium italicum - - + - - - - - - - - - Alopecurus aequalis - - - - - + - - + + - -Bidens tripartita - - - - - - + - - - - - Polygonum hydropiper - - - - - - - + - - - -

Molinio-ArrhenatheteteaRumex crispus + - + - - - + + - - - + Rorippa sylvestris + + + - - - + + + + - - Agrostis stolonifera + + 1 + + + 1 1 + 1 1 1Potentilla reptans + + 1 - - - - - + + + + Juncus inflexus - + - - - - + - - + - - Inula britannica - + - - - - - - - - - -Poa trivialis - - - - - + - - - - - - Ranunculus acris ssp. friesianus - - - + - - - - - - - - Lythrum virgatum - - - + - - - + - - - -Orchis laxiflora ssp. elegans - - - - + - - - - - - - Juncus effusus - - - + - - - - - - - - Cirsium palustre - - - - + + - - - - - -Trifolium hybridum - - - + - - - - - - - - Alopecurus arundinaceus - - - + - + - - - - + + Carex hirta - - - + - - - - - - - -Potentilla anserina - - - - - - - + - - - - Lathyrus pratensis - - - - - - + - - - - - Elymus repens - - - - - - + - - - - -Gratiola officinalis - - - - - - - - + - - - Ranunculus repens - - - - - - - - + + - - Festuca arundinacea - - - - - - - - - - + -Rorippa austriaca - - - - - - - - - - + - Carex distans - + 1 - - - + + - - - -

Puccinellio-SalicornieteaBeckmannia eruciformis + - - - - - - - - - - - Chenopodium glaucum - + - - - - - - - - - -

Relevees location: 1, 2, 4, 6, 7, 9, 11 – Iazul Mare; 3, 5, 8, 10, 12 – Staruşte.

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