Results 31 to 40 of about 1,665 (175)
Tracking the History and Ecological Changes of Rising Double-Crested Cormorant Populations Using Pond Sediments from Islands in Eastern Lake Ontario. [PDF]
PLoS 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)
E3S 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
Immigration of banded Great Cormorants to inland areas
Japanese 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
Great Cormorant, Phalacrocorax carbo
Acrocephalus, 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
Counting cases, conserving species: addressing highly pathogenic avian influenza in wildlife
Biological Reviews, EarlyView.ABSTRACT Highly pathogenic avian influenza (HPAI) has become a critical threat to wildlife, shifting from a seasonal epizootic to a persistent, year‐round panzootic with global consequences. Here, we summarise the origin, evolutionary mechanisms, and expanding host range of the current H5N1 virus (clade 2.3.4.4b) and assess its impact on wildlife. Over
Ulrich Knief +4 more
wiley +1 more source
Knowledge and Management of Aquatic Ecosystems, 2011 Since 1997, the North-east inter-regional delegation of the French National Institute for Water and Aquatic Ecosystems (ONEMA) has been running annual networked monitoring of the great cormorant (Phalacrocorax carbo sinensis ...
Collas M., Burgun V.
doaj +1 more source
Big Bird: A global dataset of birds in drone imagery annotated to species level
Remote Sensing in Ecology and Conservation, EarlyView.Drones are a valuable tool for surveying birds, but manually detecting and identifying birds in drone images is costly. We assembled a diverse dataset of 23 865 images of birds captured with 21 different drones across 11 countries. We labelled 4824 of these images, detailing the location, species, posture category, age category, and sex of 49 990 birds
Joshua P. Wilson +19 more
wiley +1 more source
Archives of Polish Fisheries, 2017 Increases in the population abundance of the piscivorous great cormorant (Phalacrocorax carbo) has led to conflicts with fisheries. Cormorants are blamed for decreased fish catches in many lakes in Poland.
Traczuk Piotr, Kapusta Andrzej
doaj +1 more source
Seasonal climatic niche and migration movements of Double‐crested Cormorants
Ecology and Evolution, 2022 Avian migrants are challenged by seasonal adverse climatic conditions and energetic costs of long‐distance flying. Migratory birds may track or switch seasonal climatic niche between the breeding and non‐breeding grounds. Satellite tracking enables avian
D. Tommy King +2 more
doaj +1 more source
Offshore wind farm avoidance by a discard‐feeding seabird is independent of local fishing activity
Journal of Animal Ecology, EarlyView.Fishing is not allowed within wind farms; therefore, discard‐feeding seabirds may appear to avoid wind farm areas. We found that most Lesser Black‐backed Gulls avoided the wind farm area, but not each individual in each period. Avoidance of the wind farm was not driven by fishing exclusion within its perimeter.
Rosemarie Kentie +4 more
wiley +1 more source