Status and Population Trends of Great Cormorant Phalacrocorax carbo sinensis Breeding in Greece

Population Trend of Colonially Nesting Heron Species in Greece

“…Other successful wetland restoration or creation projects include the Koronia Lake, where decades of water mismanagement were addressed, resulting into two heron colonies being established there in 2015, and the Sani wetland (northern Greece), where a heron colony has been established. In addition to herons, other wetland species have also benefited from the new-restored wetlands, including Glossy Ibises, Spoonbills, and Great and Pygmy Cormorants [16,17].…”

“…The number of colonies and overall nest number of colonially nesting heron species have more than doubled from 1985 to 2009 (1985: 21 colonies with 2500-3000 nests; 2003: 33 colonies and 5589 nests; 2009: 44 colonies with 6097 nests) [10,11,15]. Increases in the number of colonies and nesting pairs were also concurrently recorded in other colonially nesting wetland birds such as the Spoonbill Platalea leucorodia [16], Glossy ibis Plegadis falcinellus [15], Great Cormorant Phalacrocorax carbo [17], and the Great White Pelecanus onocrotalus and Dalmatian Pelecanus crispus pelicans [18]. The increase was probably related to better protection following the establishment in 2003 of protected area Management Authorities for national parks, which included most large wetlands containing the vast majority of heron colonies [11,15].…”

Övervakningsmetoder för storskarv (Phalacrocorax carbo)

“…Populationsutveckling för de olika underarterna mellanskarv (P. c. sinensis) och atlantstorskarv (P. c. carbo) i Europa under 2000-talet skiljer sig åt. Mellanskarven har ökat i antal medan atlantstorskarven har minskat, och det finns därför anledning att se över om övervakningen kan bidra till att förbättra kunskapsläget ytterligare om de olika underarternas populationsutveckling och relativa abundans (Debout et al 1995;Bregnballe et al 2014;Arneberg et al 2019;Lorentsen et al 2022).…”

Estimation of Fishery Losses from Great Cormorants during the Wintering Period in Greek Lagoons (Ionian Sea, W. Greece)

“…The European population is estimated at 401,000-512,000 pairs, which equates to 803,000-1,020,000 mature individuals [23]. In the southern wetlands of Europe, the cormorant appears year-round but in greater numbers during the winter period [24][25][26][27]. In Greece, the species' breeding population has increased over time [27], which is accompanied by an increase in its population on wintering grounds [28].…”

“…In the southern wetlands of Europe, the cormorant appears year-round but in greater numbers during the winter period [24][25][26][27]. In Greece, the species' breeding population has increased over time [27], which is accompanied by an increase in its population on wintering grounds [28]. There are six cormorant colonies in Greece, with a total breeding population of 5600 pairs, while in winter, their population amounts to approximately 22,000 individuals [29].…”