Results 21 to 30 of about 2,568 (200)

The uropygial gland of the Great Cormorant (\(\textit {Phalacrocorax carbo}\))

open access: yes, 2023
Um die Ursachen des charakteristischen Flügelspreizverhaltens des Kormorans aufzuklären, wurde zunächst die Federstruktur des Kormorans mit der Federstruktur einer Tauchente (\(\textit {Aythya fuligula}\)) und einer Schwimmente (\(\textit {Mareca penelope}\)) verglichen.
Stangier, Nadine   +3 more
openaire   +2 more sources

Survey of fish enemies from three fish farms in Iraq III. Impacts of predaceous water birds on cultivated fishes

open access: yesالمجلة العراقية للاستزراع المائي, 2022
The present investigation concerned with a thorough survey on the serious impact of the predaceous water birds from three selected fish farms in the country, namely Al- Manahel fish farm (presently called Al-Beilad) in Babylon province, Basrah University/
Sadek. A. Hussein   +2 more
doaj   +1 more source

Species diversity and composition of Oribatida in former breeding colonies of the great cormorant (Phalacrocorax carbo) in Poland

open access: yesPersian Journal of Acarology, 2023
The great cormorant (Phalacrocorax carbo) is a species that alters ecosystems significantly, mainly by depositions of guano, which changes the chemical properties of soil and can lead even to deforestation as well as have a significant impact on soil ...
Mateusz Oszust, Piotr Klimaszyk
doaj   +1 more source

Invasive parasites and global change: Evidence for the recent and rapid spillover of a potential pathogen of tilapias with a complex, three-host life cycle

open access: yesHeliyon, 2023
Biological invasions pose a serious threat to local flora and fauna and have negative impacts on ecosystems. Invasive parasites can also cause severe losses in aquaculture.
Nadav Davidovich   +4 more
doaj   +1 more source

Feeding ecology and epizootological value of the Great Cormorant (Phalacrocorax carbo) during the secondary expansion of the Baikal region

open access: yesЮг России: экология, развитие, 2022
Aim. To research the Great Cormorant (Phalacrocorax carbo L., 1758) ecology during the secondary expansion of the Baikal region.Material and Methods. The material for studying cormorant nutrition was 28 stomachs of harvested birds, visual observations of
E. N. Yelayev   +7 more
doaj   +1 more source

Soil conditions under great cormorant and grey heron colonies in a wetland: Effect on soil nematode abundance and trophic structure [PDF]

open access: yesJournal of Water and Land Development, 2023
This study aimed to investigate how great cormorants and grey herons affect the density and trophic diversity of soil nematodes under breeding colonies located in Stawy Raszyńskie Nature Reserve (central Poland).
Dawid Kozacki   +3 more
doaj   +1 more source

Determination of total mercury in muscle, intestines, liver and kidney tissues of cormorant (Phalacrocorax carbo), great crested grebe (Podiceps cristatus) and Eurasian buzzard (Buteo buteo)

open access: yesVeterinární Medicína, 2005
The total mercury concentrations in four tissues (muscle, intestines, liver and kidney) of aquatic birds (cormorant - Phalacrocorax carbo and great crested grebe - Podiceps cristatus) and Eurasian buzzard (Buteo buteo) were determined by cold vapour ...
P. Houserova   +5 more
doaj   +1 more source

Effects of Great Cormorant Predation on Fish Populations and Fishery

open access: yes, 2001
The strong increase in number of Great cormorants Phalacrocorax carbo in Sweden in recent years has led to conflicts - particularly with fishery. This thesis focuses on the possible effects of cormorant predation on fish populations. In total, data from 15 lakes in South Sweden were included in this study while most studies were carried out in Lake ...
Engström, Henri
openaire   +2 more sources

Post-Breeding Dispersion and Migratory Routes of Dalmatian Pelican (Pelecanus Crispus), Great Cormorant (Phalacrocorax Carbo) and Eurasian Spoonbill (Platalea Leucorodia) from the North of Sinoe Lagoon (Danube Delta) [PDF]

open access: yesScientific Annals of the Danube Delta Institute, 2019
In the period 2003-2006, a series of bird markings were performed in nesting colonies from the northern part of the Sinoie lagoon in the Danube Delta Biosphere Reserve.
Kiss J. Botond   +4 more
doaj   +1 more source

Differences in the diet of breeding Cormorants Phalacrocorax carbo sinensis in an inland colony: the effect of years, breeding stages and locations within the colony

open access: yesLimnological Review, 2018
A study of the diet of the Great Cormorant Phalacrocorax carbo sinensis (fish species and size) in (1) different seasons (years), (2) breeding stages (incubation and chick rearing), and (3) breeding areas (center and edge) in the colony in the Dzierżno ...
Buttu Simone   +3 more
doaj   +1 more source

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