Description
The Cavana marsh extends between the Brancolo, the Taiada canal, the sea and the recent urbanisation of Marina Julia. It is the part closest to the sea of the large marshes that used to stretch along the river Cavana and which were “cut” by the excavation of the Brancolo. The upstream part is now called Schiavetti. The Cavana marsh has varying salinity with formations of Cladium mariscus sedge and wet meadows further inland with Phragmites reed beds and large sandbanks with halophilic vegetation nearer the embankment by the sea. The spring waters flow into the sea through two flag gates, which are kept partially open to allow a limited inflow of seawater.
Vegetation
This is the typical oak of low-lying terrain with deep, humid soil. Found in lowland forests, along rivers and near springs, as well as in...
It may be found along rivers, near springs and accompanying the minor waterways of wetlands and peaty terrain. It can form pure forests in...
A shrub or small tree of rounded form normally present along waterways near springs, and amidst reeds on peaty and often flooded soils.
Frequent in many areas even away from water. Together with poplars, it is one of the main species in riparian forests and floodplains.
Frequent in lowland woods where it prefers the wettest locations. Found along rivers and near springs. Quite resistant to salinity, it also grows...
This forms extensive reed beds, particularly at river mouths. It resists moderate salinity by reducing its size. It is used for trellises, locally...
A very common plant in freshwater wetlands and minor waterways producing the showy yellow blooms of this species in April-May.
It forms exclusive stands around the “mouths” of spring and is present along waterways and in floodplains on perpetually flooded peaty...
This plant with its showy summer flowering is well spread in freshwater wetlands and along minor waterways.
It forms exclusive stands or in association with the common reed at the mouth of rivers, in the presence of slightly brackish water. It used to be...
A halophyte species, it forms populations in salt marshes and in the areas used to trap fish in the presence of moderate salinity. Widespread in...
A halophyte species forming extensive spreads on sandbanks and very noticeable during the summer flowering.
A halophyte species found on sandbanks and on the reclaimed land of Lisert where it covers extensive areas.
Another halophyte species, this is the first terrestrial plant to colonise the highest tidal flats, enduring long submersion.
This North American species has spread widely in floodplains and along the coasts. It is an exotic, infesting species that greatly modifies the...
A North American species common in cultivated areas and along rivers. Used for poles and firewood.
Habitats
Upstream of the lagoons, there used to stretch a vast forest of oak, hornbeam, elm and ash trees that took on the current range of flora about...
At the mouth of the Isonzo and in the lagoon of Marano there are large areas of delta with strips of riparian forest and large reed beds that give...
The lagoon system of FVG extends between the mouth of the Isonzo and that of the Tagliamento. Compared to its “big sister”, the...
The coastline that once upon a time (until the 1920s) used to change naturally in response to the rise and fall of the sea level and sedimentation...
Birds
84-102 cm, sexes similar. All year round, nesting in colonies in lagoon groves and other wooded areas inland. Nesting has been noted since 1999. Very...
70-90 cm, Sexes similar. Present from late March to September, nesting in colonies in lush reeds in the lagoon of Marano and the restored areas of...
45-55 cm, marked dimorphism, the male is grey with black wing tips, the female brown, and both have a white rump. Present during migration and...
34-38 cm; this is the smallest duck. Mainly a wintering species, some pairs do nest here and concentrations of teal can be observed in freshwater...
19-21 cm, sexes similar. There is a grey variety and a rufous one. It is a small owl with ear tufts and a characteristic and insistent song. Present...
46-56 cm, with characteristic white speculum. Mainly a wintering species, but some pairs nest here. It frequents freshwater wetlands, the mouth of...
12.5-14 cm, light brown plumage with pale belly. Present from April to September in the reeds where it nests. It is the most common species of...
140-160 cm, white, grey in juveniles, tubercle at the base of the beak, most evident in males. Present throughout the year, numerous at river mouths...
23-28 cm, sexes similar, greyish. It is the most frequent nocturnal bird of prey and can be observed in agricultural areas often near the buildings...
38-43 cm sexes similar, grey with white wing bands. Present throughout the year, it commonly nests in the groves of the lagoon islands and in...
77-94 cm, sexes similar. Like pelicans and boobies, they have the 4 fingers joined by a membrane to facilitate swimming. The species is present...
33-36 cm, sexes similar. There is a grey variety of cuckoo and a red one. It has pointed wings vaguely reminiscent of a bird of prey but the head is...
15-16 cm, the male with grey head and white throat in the cinerocapilla subspecies, yellow belly, long tail with white outer feathers. During...
43-55 cm, marked dimorphism, with the male more colourful while the female is dark with pale-yellow head and shoulders. Present throughout the year,...
36-42 cm, sexes similar. Sooty black in colour with white beak and frontal shield. It runs over the water to take flight. Present throughout the...
35-39 cm, sexes similar. In February, it gains the dark brown cap for the breeding season, which it then loses in July-August. Present throughout the...
37-40 cm, sexes similar. Compared to the black-headed gull, the beak is more massive and coral-red, it has a black head – during nesting – and...
52-58 cm, sexes similar. Grey upperparts, white lower parts. Present throughout the year and abundant, nesting in the lagoon, on the roofs of houses...
27-31 cm, sexes similar. Dark with tail in part white and red and yellow beak. Present throughout the year, it nests in freshwater and brackish...
55-65 cm, sexes similar. White plumage with long feathers on the neck and back during the breeding season. Present throughout the year round, nesting...
40-46 cm, sexes similar. It is smaller than the black-headed gull. Present from November to April, numerous in some winters, it frequents the sea,...
50-60 cm. With marked dimorphism, this is the ancestor of the domestic duck. Present throughout the year, it is very adaptable, frequenting both...
96-119 cm, sexes similar. Grey with black and white head and the tips of the wings black. It flies with outstretched neck, unlike herons which fly...
25-29 cm, sexes similar. A very colourful bird, it has a distinctive flight suited to capturing large insects in flight. It perches on leafless...
45-55 cm, sexes similar. It is present throughout the year and nests in colonies, associating with various species of herons in some groves of the...
17-19 cm, sexes similar. Blue upperparts, red underparts with large, dark beak dark and very short tail, which in flight makes it resemble a...
37-41 cm. The male has a characteristic white stripe from the eye to the nape. A migratory species, it is present from March to September. It...
44-52 cm; the male this a distinctive white chest. Mainly a wintering species, some pairs breed here. It frequents wetlands with low salinity and the...
13.5-15.5 cm - the male in wedding dress has a black head. In winter, the plumage of both sexes are the same, of a brownish coloure and with...
58-65 cm, sexes similar, the adult black and grey, the juveniles brown. Present from spring to autumn, rare in winter. It nests in colonies...
74-84 cm, grey, in flight, the light-coloured wing coverts are obvious. This is the progenitor of the domestic goose. Present throughout the year, it...
28-31 cm, sexes similar, iridescent black uppers, white under parts with characteristic tuft on the neck and rounded wings. Present throughout the...
10-11.5 cm, sexes similar. Grey head with a black eye streak. “Theoretically” present throughout the year in reed beds and riparian woods, now...
18 to 20.5 cm light brown uppers. white on the lower parts. The wings have a narrow light-coloured bar and are often blocked briefly in flight....
48-56 cm, sexes similar, plumage varies widely, generally brown with light patches. Present all year round, most numerous even in the largest lagoon...
23-26 cm, sexes similar. Grey under parts, brown stripes on uppers, long, curved beak. Present throughout the year, it is more numerous in winter and...
17-21 cm, sexes similar. Black upperparts, red throat and whitish belly. Present from March to April and from September to October, it nests in rural...
46-51 cm, sexes similar. Grey upper part, whitish beneath, while in its nuptial plumage it reveals obvious tufts on the head and below the eyes....
22-28 cm, the male yellowish and black on the head, back and wings, the female similar but with brownish instead of black. It is the smallest...
69-81 cm, sexes similar. Camouflaged plumage. Present during wintering and migration. It nests here occasionally. Frequents freshwater wetlands with...
29-33 cm, sexes similar. Plumage light beige with black collar. Present all year round, often associated with human settlements in cities, towns and...
23-29 cm, sexes similar, brown in winter, black with rufous cheeks in the breeding season. Present throughout the year, it nests in freshwater...
25-29 cm, sexes similar, orange plumage striped with black, erectile crest on the head, flickering flight. Present from April to September and fairly...
15-16.5 cm, sexes similar. Reddish brown upperparts, and light in underparts. Present from April to September. It nests in coastal and riparian...
13-14 cm, sexes similar. Reddish brown plumage, loud, crackling song, especially when a human intrudes on the territory of a male. Present throughout...
