Results 11 to 20 of about 236 (139)
Northern range shift may be due to increased competition induced by protection of species rather than to climate change alone. [PDF]
Ecol Evol, 2018 The protection of the species may induce an increase in population that generates increasing competition for optimal feeding areas, which may induce a similar or even a higher northern range shift than the climate change does, or induce an opposite shift with differences between breeding and wintering populations.
Marion L, Bergerot B.
europepmc +2 more sources
Energy requirements of breeding great cormorants Phalacrocorax carbo sinensis [PDF]
Marine Ecology - Progress Series, 1995 David Gremillet
exaly +2 more sources
Conspecific reproductive success affects age of recruitment in a great cormorant, Phalacrocorax carbo sinensis , colony [PDF]
Proceedings of the Royal Society B: Biological Sciences, 2001 Morten Frederiksen, Thomas Bregnballe
exaly +2 more sources
Amphibious hearing in a diving bird, the great cormorant (Phalacrocorax carbo sinensis) [PDF]
Journal of Experimental Biology, 2020 Diving birds spend up to several minutes underwater during pursuit-dive foraging. To find and capture prey, like fish and squid, they probably need several senses in addition to vision. Cormorants, very efficient predators of fishes, have unexpectedly low visual acuity underwater.
Ole Næsbye Larsen +2 more
openaire +3 more sources
Cormorant catch concerns for fishers: estimating the size-selectivity of a piscivorous bird. [PDF]
PLoS ONE, 2013 Conflict arises in fisheries worldwide when piscivorous birds target fish species of commercial value. This paper presents a method for estimating size selectivity functions for piscivores and uses it to compare predation selectivities of Great ...
Vladimir Troynikov +6 more
doaj +1 more source
Ecology of Freshwater Fish, Volume 32, Issue 4, Page 750-764, October 2023., 2023 Abstract The Baltic Sea has been under intense environmental changes in the recent decades, such as climate change, eutrophication and increasing abundance of top‐predators, which pose serious challenges to its aquatic life. For informed conservation measures and sustainable yields, we need to understand how the populations are being affected ...
Mikko Olin +3 more
wiley +1 more source
Impacts of predation by Eurasian otters on Atlantic salmon in two Norwegian rivers
Freshwater Biology, Volume 68, Issue 7, Page 1176-1193, July 2023., 2023 Abstract The return of the Eurasian otter (Lutra lutra) to western Norway has sparked human–predator conflicts because otters prey on vulnerable Atlantic salmon (Salmo salar) populations. Although predation may not be the ultimate cause of salmon population declines, otters that kill adult salmon in rivers before they spawn impact the salmon spawning ...
Lene Klubben Sortland +4 more
wiley +1 more source
Ecology of Freshwater Fish, Volume 32, Issue 2, Page 488-495, April 2023., 2023 Abstract The increase in abundance of great cormorants (Phalacrocorax carbo sinensis) over the last decades has caused concern for the sustainability of fish populations. Cormorants are opportunistic piscivorous birds that eat fish from a wide range of species and sizes, in marine, lacustrine and riverine habitats.
Kristi Källo +3 more
wiley +1 more source
Journal of Fish Biology, Volume 101, Issue 5, Page 1285-1300, November 2022., 2022 Abstract It is thought that survival during migration is particularly poor for Atlantic salmon post‐smolts immediately after entry into sea and particularly in the estuarine environment. Nonetheless, there is currently a lack of information on Atlantic salmon post‐smolt movement behaviour in estuaries in the UK.
Jessie Lilly +6 more
wiley +1 more source
Underwater hearing in the great cormorant (Phalacrocorax carbo sinensis): Methodological considerations [PDF]
Proceedings of Meetings on Acoustics, 2016 The underwater hearing threshold of a great cormorant (Phalacrocroax carbo sinensis) was measured at 2 kHz using psychophysical methods. Previous in-air and underwater testing suggests that cormorants have rather poor in-air hearing compared to other birds of similar size (Johansen, 2016).
Hansen, Kirstin Anderson +3 more
openaire +1 more source