Ag-Gel

Ag-Gel National Park covers 17,924 hectares of shallow lake, wetland, and semi-arid steppe in the Mil-Karabakh Plain of western Azerbaijan. Established in 2003, the park protects Ag-Gel Lake—'White Lake' in Azerbaijani—and its surrounding marshes and mudflats, which form one of Azerbaijan's most important inland wetlands. The lake is fed by the Kura River system and provides critical habitat for migratory waterbirds on the Caucasian segment of the Western Eurasian flyway. The surrounding steppe and semi-desert support the rare Caucasian goitered gazelle and other threatened Caucasian fauna.

Ag-Gel Lake and its marshes are internationally significant for waterbirds. The lake supports breeding dalmatian pelican—one of the world's most endangered pelicans—and hosts large concentrations of migratory ducks, geese, waders, and herons in spring and autumn. Greater flamingo occurs regularly. White-tailed eagle and imperial eagle hunt over the lake margins. The surrounding steppe is habitat for Caucasian goitered gazelle, European ground squirrel, and little bustard. Saiga antelope occasionally wander into the steppe zone from Kazakhstan. The lake supports populations of common carp, barbel, and pike, which sustain the lake's avifauna. Eurasian otter fishes along the channels and lake margins.

The lake is fringed with extensive reed beds (Phragmites australis) and bulrush marshes that provide nesting habitat for waterbirds and shelter for wildlife. The lake shore transitions to halophytic meadow on saline soils, with glasswort, sea purslane, and statice typical of saline grasslands. The surrounding Mil-Karabakh Plain steppe is dominated by wormwood, feather grasses, and annual herbs—a semi-arid grassland. Riparian vegetation along the irrigation channels that feed the lake includes willow and poplar. The lake's aquatic vegetation includes water lilies and pondweed in shallower areas. Total flora is approximately 400 species.

Ag-Gel Lake occupies a shallow depression in the Kura-Aras Lowland, a structural basin formed by the subsidence of continental crust between the Greater and Lesser Caucasus mountain ranges. The lowland is underlain by thick Quaternary alluvial and lacustrine sediments deposited by the Kura and Aras rivers. The lake itself is a remnant of historical river channels and floodplain lakes; its water levels are maintained partly by irrigation return flows and partly by seasonal flooding. The flat, low-lying terrain is prone to salinization due to a high water table and intense summer evaporation. The Caspian Sea once covered this area during higher sea-level periods.

The Mil-Karabakh Plain has a semi-arid continental climate. Annual precipitation is 250–350 mm, with summer drought and winter/spring rainfall maximum. Summers are hot (July average 27°C) and dry; winters are cold (January average 2°C) with occasional hard frosts. The lake moderates temperatures slightly in its immediate vicinity. Wind is a significant factor, driving water evaporation and occasionally creating dust storms from the dry steppe. The climatic conditions make the lake a critical water feature in an otherwise very dry landscape—concentrating wildlife and making the park's biodiversity dependent on maintaining the lake's water balance.

The Mil-Karabakh Plain was an important agricultural zone of ancient Caucasian Albania. The area was part of the Azerbaijani khanates in the medieval and early modern period and was incorporated into the Russian Empire in the 19th century. The region has experienced significant land use change in the 20th century: Soviet-era irrigation projects extended agriculture across the lowland, converting former wetlands and steppe to farmland. The lake was partially affected by these changes but retained sufficient water through irrigation drainage. The Karabakh conflict of the 1990s affected the surrounding region; the area's ecology suffered from the disruption of conservation management during this period.

Ag-Gel National Park was established by presidential decree on 13 January 2003. Prior to national park status, the lake and surrounding wetlands had been identified as an important bird area by BirdLife International. The park was established partly in response to international advocacy for wetland protection in Azerbaijan's lowland zone. Since its founding, the park has developed birdwatching infrastructure and conducted annual waterbird counts. Cooperation with BirdLife and ACBK has improved monitoring of Dalmatian pelican and other priority species. The park is part of Azerbaijan's Ramsar network of wetlands.

Birdwatching from the lake shore and observation towers is the park's primary attraction. Spring (March–May) and autumn (September–November) bring spectacular concentrations of migratory waterbirds including pelicans, flamingos, eagles, and waders. Dalmatian pelican is the flagship species and can be seen at the nesting islands with binoculars or telescope. Gazelle observation in the surrounding steppe is possible in early morning. The park has a visitor center with exhibits on Caucasian wetland ecosystems. Photography hides near the lake shore are available for serious wildlife photographers with advance booking.

The park is located approximately 270 km west of Baku; the nearest town is Aghjabadi (approximately 30 km). Baku has international transport links. Access is by road (4 hours from Baku). The park has a visitor center and basic accommodation. The best season is spring and autumn for birdwatching. Local guides with ornithological knowledge can be arranged through the park administration. The park is increasingly included in specialist birdwatching tours of the South Caucasus. Entry fees apply.

Water balance management is the park's most critical challenge: the lake's level is dependent on irrigation return flows, and changes in agricultural water use can dramatically affect the habitat. The Dalmatian pelican colony requires undisturbed nesting islands and sufficient fish stocks. Illegal fishing within the park depletes fish populations needed by pelicans and other piscivores. Illegal hunting of waterbirds on migration remains a problem in the broader region. The park cooperates with neighboring countries on migratory waterbird management through the Convention on Migratory Species (CMS) and the East Atlantic Flyway Partnership.