From Porto Buso, along the Ausa channel and the river Corno to Villanova.

Description

A straight channel leads to the confluence of the spring-fed Ausa and Corno rivers, which flow into the lagoon on the boundary between Grado and Marano. There are two dockyards at the confluence, one to the west and the other to the east, exploiting old bends in the river that are now cut off, rather than remain on the main course that has now been straightened. Keeping to the left bank and following the river Corno upstream, the visitor first comes across small factories, wharfs and tourist boatyards, while there is also evidence of recent reclamation, such as the Planais water pump, and of the original lowland forest, now surrounded by fields and factories. After 6 km he reaches Porto Nogaro, which vies with Monfalcone for the title of most northerly commercial port in the Mediterranean. Trade along the river has a long tradition, but growth really took off following the recent redevelopment schemes, such as the building of the groins at Porto Buso, the digging of the channel and the establishment of an industrial estate. Upstream of Porto Nogaro stands “Canoa San Giorgio” rowing club, after which the river returns to its natural state, with meanderings, lush woodland and considerable birdlife. One curious episode is worth mentioning: in June 2013 a specimen of Tursiops truncates, the bottlenose dolphin, the most common type of dolphin in the area, swam up the river as far as Villanova, over 10 km from the sea.

Traditions

The lagoon area and surroundings are characterised by zones below mean sea level, which need the use of pumps to drain rainwater from the area...



Habitats

Areas normally above the water in a lagoon are called barene or salt marshes and are characterised by halophilic vegetation typical of...



In the last century, vast areas of the lagoons and surrounding marshes were drained to obtain new agricultural, industrial and urban land. To...



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 areas regularly submerged by the high tide that are revealed when the sea retreats are called the tidal flats. In Friuli Venezia Giulia, these...



Birds

Casmerodius albus

85-100 cm, sexes similar. White plumage, yellow beak which becomes black in the breeding season. Present throughout the year, it does not, however,...



Ardea cinerea

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...



Bubulcus ibis

45-52 cm, sexes similar. Present throughout the year. It reproduces in some lagoon groves associated with other species of herons. Nesting has been...



Ardea purpurea

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...



Circus cyaneus

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...



Anas crecca

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...



Otus scops

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...



Gallinago gallinago

23-28 cm, sexes similar. With well-camouflaged streaked brown plumage, it has a long beak and a characteristic zig-zag flight. Present from July to...



Anas strepera

46-56 cm, with characteristic white speculum. Mainly a wintering species, but some pairs nest here. It frequents freshwater wetlands, the mouth of...



Aceocephalus scirpaceus

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...



Acrocephalus arundinaceus

16-20 cm, sexes similar. Light brown with whitish underparts. Present from April to September in the reeds where it nests. Its loud song...



Numenius arquata

48-57 cm, sexes similar. Brownish with a long curved beak. Present throughout the year but does not nest. Forms flocks during high tide on sandbars...



Numenius phaeopus

37-45 cm, sexes similar. Brownish with curved beak, shorter than the curlew, and with characteristic dark streaks on the head. Present during...



Cygnus olor

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...



Athene noctua

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...



Columbus palumbus

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...



Phalacrocorax carbo

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...



Motacilla flava

15-16 cm, the male with grey head and white throat in the cinerocapilla subspecies, yellow belly, long tail with white outer feathers. During...



Circus aeruginosus

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,...



Falco peregrinus

38-45 cm, sexes similar. Uppers grey-brown in juveniles, white underparts barred, pointed wings and fast flight. Present throughout the year, it...



Pandion haliaetus

52- 60 cm, the upperparts dark, white underside, long wings. Present during migration, especially in April-May and August-September. Relatively...



Fulica atra

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...



Chroicocephalus ridibundus

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...



Larus melanocephalus

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...



Larus michahellis

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...



Gallinula chloropus

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...



Egretta garzetta

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...



Larus canus

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,...



Anas plathyrhynchos

50-60 cm. With marked dimorphism, this is the ancestor of the domestic duck. Present throughout the year, it is very adaptable, frequenting both...



Falco tinnunculus

31-37 cm, the male with a grey head and tail, rufous upperparts, the female with rufous barred tail. Present throughout the year, it nests in the...



Grus grus

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...



Merops apiaster

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...



Falco subbuteo

29-35 cm sexes similar, dark uppers, with speckled chest and lower parts red. Present from April to October, it nests in the riparian forests along...



Phalacrocorax aristotelis

68-78 cm, sexes similar. It has a short tuft that appears in adults in winter and early spring. Present throughout the year, it becomes rare in...



Phalacrocorax pygmaeus

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...



Alcedo atthis

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...



Anas querquedula

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...



Anas clypeata

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...



Emberiza shoeniclus

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...



Nycticorax nycticorax

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...



Remiz pendulinus

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...



Actitis hypoleucos

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....



Buteo buteo

48-56 cm, sexes similar, plumage varies widely, generally brown with light patches. Present all year round, most numerous even in the largest lagoon...



Rallus aquaticus

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...



Bucephala clangula

Bucephala clangula (local names: moro, moreto, quatro oci) 40-48 cm, the male with a black head and characteristic white patch below the eyes....



Hirundo rustica

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...



Mergus serrator

52-58 cm, the male with dark green head and white neck, the female with reddish head. Present during wintering, it is frequent during the spring...



Sterna hirundo

34-37 cm, sexes similar. Light grey upperparts and white underparts, with black cap and red beak. It is the classic tern, frequent from April to...



Gavia arctica

63-75 cm, sexes similar. In winter the plumage is dark grey above, whitish underneath; the beak is more massive and held flat compared to the...



Gavia stellata

55-67 cm, sexes similar. In winter, the plumage is grey, and whitish underneath. Present in winter at sea and in the deepest areas of the lagoons....



Podiceps cristatus

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....



Podiceps nigricollis

28-34 cm, sexes similar. Grey and off-white in winter, in March it has a black neck and a yellow tuft behind a red eye. Present from August to April,...



Ixobrychus minutus

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...



Botaurus stellaris

69-81 cm, sexes similar. Camouflaged plumage. Present during wintering and migration. It nests here occasionally. Frequents freshwater wetlands with...



Streptopelia decaocto

29-33 cm, sexes similar. Plumage light beige with black collar. Present all year round, often associated with human settlements in cities, towns and...



Tachibaptus ruficollis

23-29 cm, sexes similar, brown in winter, black with rufous cheeks in the breeding season. Present throughout the year, it nests in freshwater...



Upupa epops

25-29 cm, sexes similar, orange plumage striped with black, erectile crest on the head, flickering flight. Present from April to September and fairly...



Luscina megarhynchos

15-16.5 cm, sexes similar. Reddish brown upperparts, and light in underparts. Present from April to September. It nests in coastal and riparian...



Cettia cetti

13-14 cm, sexes similar. Reddish brown plumage, loud, crackling song, especially when a human intrudes on the territory of a male. Present throughout...



Other hotspots

An area of shoals and rather cramped stretches of lagoon stretches to the...

n. 47

Proceeding from Porto Buso along the Litoranea Veneta network of waterways,...

n. 41

The area of Porto S. Andrea, between the island of the same name and the...

n. 42

Turning left at Verto Grande, we work our way up the Stella, the main...

n. 49

The island of Martignano and the adjacent “matan” constitute the...

n. 43
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