Results 31 to 40 of about 2,568 (200)

The complexity of ecological impacts induced by great cormorants [PDF]

open access: yesHydrobiologia, 2015
Following decades of global extermination, the general population of the great cormorant (Phalacrocorax carbo L.) is on the rise. The lack of regular predators, highly skilled fish rapacity, rapid metabolism, significant rate of excretion and ability to form large nesting colonies on relatively small areas lead to numerous environmental consequences of
Klimaszyk, Piotr, Rzymski, Piotr
openaire   +1 more source

Population Status, Breeding Biology and Diet of Norwegian Great Cormorants

open access: yesArdea, 2022
Two subspecies of the Great Cormorant breed in Norway, the continental Phalacrocorax carbo sinensis in the south, along the Skagerrak coast, and the marine P. c. carbo from central Norway and northwards. Here we review the information existing until 2017 on population status and trends, breeding performance and diet of these two subspecies in Norway ...
Lorentsen, Svein-Håkon   +3 more
openaire   +3 more sources

APPLICATION OF THE GREAT CORMORANT'S (Phalacrocorax carbo sinensis) DAILY MEAL IN THE STIMATION OF DAMAGES AT FISHPONDS [PDF]

open access: yesCroatian Journal of Fisheries, 2004
Daily meal of the Great Cormorant (Phalacrocorax carbo sinensis), joined with the number of birds and composition of fish in the meal, has high importance in total calculation of damage-costs on fish stock.
Anđelko Opačak   +3 more
doaj  

Stomach contents of the great cormorant Phalacrocorax carbo inhabiting northeastern Poland

open access: yesArchives of Polish Fisheries, 2021
The contents of 174 stomachs of great cormorants (Phalacrocorax carbo) inhabiting northeastern Poland were analyzed. Fish and hard parts of fish were found in most of the stomachs. (87.4%). Moreover, nematode and tapeworm parasites were observed in 76.4%
Traczuk Piotr   +2 more
doaj   +1 more source

Weather conditions, distribution of resources feed and dynamics of the spatial structure of the Great Cormorant in the water area of Lake Baikal [PDF]

open access: yesE3S Web of Conferences, 2023
On the basis of long-term observations (2018-2023), the features of the distribution of the Great Cormorant in the water area of Lake Baikal during the mass rise of young birds “on the wing” are considered, depending on the distribution of feed resources
Mel’nikov Yuriy   +2 more
doaj   +1 more source

Wind-caused death of Great Cormorant

open access: yesThe Canadian field-naturalist, 1979
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
McNicholl, Martin K., Hogan, Geoffrey G.
openaire   +1 more source

Tracking the History and Ecological Changes of Rising Double-Crested Cormorant Populations Using Pond Sediments from Islands in Eastern Lake Ontario. [PDF]

open access: yesPLoS ONE, 2015
In the Laurentian Great Lakes region, the double-crested cormorant (Phalacrocorax auritus) has seen a thousand-fold population increase in recent decades.
Emily M Stewart   +7 more
doaj   +1 more source

Pedogeochemical Anomalies in Surroundings of Great Cormorant Colony (Case Study in Lithuania)

open access: yesE3S Web of Conferences, 2013
The area where the colony of great cormorants in Curonian Spit (Lithuania) prospers from 1989 is the study object of “Koreko” project. Based on geochemical results of 90 samples of topsoil from 6 zones which differ according to the influence of the great
Taraškevičius R.   +2 more
doaj   +1 more source

Great Cormorant, Phalacrocorax carbo

open access: yesAcrocephalus, 2005
On february 2004 5 nighe and day roost were spoted allong Bosnia River with over 200 individuas of the Great Cormorant. (UTM BQ27, BQ37, BQ56, BQ66, BQ88)
Mikuška, Tibor, Mikuška, Alma
openaire   +2 more sources

Immigration of banded Great Cormorants to inland areas

open access: yesJapanese Journal of Ornithology, 2009
本研究では,広域的に移動するカワウPhalacrocorax carboにおいて,山梨県で発見された標識個体の記録から,沿岸域を中心とする大規模コロニーから内陸部への移入および飛来の傾向を調査した.2003年から2008年までの間に,銃器による捕獲で8個体,釣り針による捕獲で2個体,観察により3個体,計13個体の標識されたカワウが発見された.発見された水系別にみると,駿河湾に注ぐ富士川水系では,5個体全てが愛知県以西で標識された個体であった.一方,上流域が山梨県東部にあり相模湾,東京湾へと注ぐ相模川および多摩川では,8個体の標識されたカワウは,全て関東地方沿岸域で標識された個体であった.富士川と相模川,多摩川とで,カワウの標識された地域には明瞭な差異がみられ,富士川水系へは中部,近畿地方から,相模川,
Tsuboi, Jun-ichi   +5 more
openaire   +2 more sources

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