Results 21 to 30 of about 685 (183)

Predator‐prey feedback in a gyrfalcon‐ptarmigan system? [PDF]

Ecology and Evolution, 2017
Abstract Specialist predators with oscillating dynamics are often strongly affected by the population dynamics of their prey, yet they are not always the cause of prey cycling. Only those that exert strong (delayed) regulation of their prey can be.
Barraquand, Frédéric, Nielsen, Ólafur K.   +1 more
openaire   +3 more sources

The Gyrfalcon [PDF]

The Condor, 2006
Abstract The following critiques express the opinions of the individual evaluators regarding the strengths, weaknesses, and value of the books they review. As such, the appraisals are subjective assessments and do not necessarily reflect the opinions of the editors or any official policy of the American Ornithologists' Union.
Eugene Potapov, Richard Sale
  +6 more sources

Corrigendum: Predator‐prey feedback in a gyrfalcon‐ptarmigan system? [PDF]

Ecology and Evolution, 2020
Frédéric Barraquand, Ólafur K. Nielsen   +1 more
doaj   +2 more sources

The Bearded Vulture as an accumulator of historical remains: Insights for future ecological and biocultural studies. [PDF]

Ecology
Ecology, Volume 106, Issue 9, September 2025.
Margalida A, Couto S, Pinedo SO, Gil-Sánchez JM, Agudo Pérez L, Marín-Arroyo AB.   +5 more
europepmc   +2 more sources

Sedimentary Metagenomics Reveal Avian Community Transitions From the Last Glacial Maximum to the Holocene. [PDF]

Ecol Evol
We used sedimentary ancient DNA shotgun metagenomics to reconstruct past bird communities in northern high‐latitude environments. By using long time series and data collected across a large environmental gradient, we contributed in a unique and explorative way to the understanding of palaeoecological dynamics between birds and their habitat on the ...
Sander MM, Stoof-Leichsenring KR, Liu S, Shen W, Lisovski S, Herzschuh U.   +5 more
europepmc   +2 more sources

Status and trends of circumpolar peregrine falcon and gyrfalcon populations. [PDF]

Ambio, 2020
The peregrine falcon (Falco peregrinus) and the gyrfalcon (F. rusticolus) are top predators of arctic ecosystems and have been identified as Focal Ecosystem Components (FEC) for the Arctic Council’s pan-Arctic biodiversity monitoring plan. We provide the
Franke A, Falk K, Hawkshaw K, Ambrose S, Anderson DL, Bente PJ, Booms T, Burnham KK, Ekenstedt J, Fufachev I, Ganusevich S, Johansen K, Johnson JA, Kharitonov S, Koskimies P, Kulikova O, Lindberg P, Lindström BO, Mattox WG, McIntyre CL, Mechnikova S, Mossop D, Møller S, Nielsen ÓK, Ollila T, Østlyngen A, Pokrovsky I, Poole K, Restani M, Robinson BW, Rosenfield R, Sokolov A, Sokolov V, Swem T, Vorkamp K.   +34 more
europepmc   +2 more sources

An Emotion and Attention Recognition System to Classify the Level of Engagement to a Video Conversation by Participants in Real Time Using Machine Learning Models and Utilizing a Neural Accelerator Chip

Algorithms, 2022
It is not an easy task for organizers to observe the engagement level of a video meeting audience. This research was conducted to build an intelligent system to enhance the experience of video conversations such as virtual meetings and online classrooms ...
Janith Kodithuwakku, Dilki Dandeniya Arachchi, Jay Rajasekera   +2 more
doaj   +1 more source

«ПТИЧИЙ» ЯЗЫК ДИПЛОМАТИЧЕСКОГО ЭТИКЕТА НАРОДОВ ЕВРАЗИЙСКОЙ СТЕПИ В XIII—XV В. [PDF]

Материалы по археологии и истории античного и средневекового Причерноморья
Набор подношений в дипломатическом этикете народов кочевой степи нес определенный символический смысл и декларацию политических и экономических отношений.
Селезнев, Ю.В.
doaj   +1 more source

The Sustainable Trapping of Falcons – is It Possible in Russia and Other CIS Countries?

Пернатые хищники и их охрана, 2016
This article was prepared according on the analysis of the situation with the poaching and smuggling of falcons (Gyrfalcon Falco rusticolus, Saker Falcon F. cherrug and Peregrine Falcon F. peregrinus) in CIS countries in 2006–2015.
Elvira G. Nikolenko
doaj   +1 more source

Migration, Habitat and Hunting Style Do Not Affect the Malar Stripe of Different Falcon Species. [PDF]

Ecol Evol
Migratory strategy, habitat and hunting style do not markedly influence the size and intensity of malar stripes across falcon species, suggesting that other mechanisms, such as thermoregulation or camouflage, also play a role. ABSTRACT The solar glare hypothesis suggests that the malar stripe of a falcon decreases the sun's glare in the eye, possibly ...
Polak C, Ottenburghs J.
europepmc   +2 more sources