Results 21 to 30 of about 14,915 (237)

Risk Factors for Seabird Bycatch in a Pelagic Longline Tuna Fishery.

open access: yesPLoS ONE, 2016
Capture in global pelagic longline fisheries threatens the viability of some seabird populations. The Hawaii longline tuna fishery annually catches hundreds of seabirds, primarily Laysan (Phoebastria immutabilis) and black-footed (P.
Eric Gilman   +3 more
doaj   +1 more source

Leaving more than footprints: Anthropogenic nutrient subsidies to a protected area

open access: yesEcosphere, 2022
Mobile animals that traverse ecosystem boundaries can fundamentally reshape environments by providing critical nutrient and energy inputs to the ecosystems they inhabit.
A. S. Guerra   +5 more
doaj   +1 more source

Making the most of the old age: Autumn breeding as an extra reproductive investment in older seabirds

open access: yesEcology and Evolution, 2021
The extrinsic and intrinsic factors affecting differing reproductive strategies among populations are central to understanding population and evolutionary ecology.
Francisco Ramírez   +3 more
doaj   +1 more source

Seabird diving behaviour reveals the functional significance of shelf-sea fronts as foraging hotspots [PDF]

open access: yesRoyal Society Open Science, 2016
Oceanic fronts are key habitats for a diverse range of marine predators, yet how they influence fine-scale foraging behaviour is poorly understood. Here, we investigated the dive behaviour of northern gannets Morus bassanus in relation to shelf-sea ...
S. L. Cox   +8 more
doaj   +1 more source

A comparison of techniques for classifying behavior from accelerometers for two species of seabird

open access: yesEcology and Evolution, 2019
The behavior of many wild animals remains a mystery, as it is difficult to quantify behavior of species that cannot be easily followed throughout their daily or seasonal movements.
Allison Patterson   +4 more
doaj   +1 more source

Consequences of cross‐season demographic correlations for population viability

open access: yesEcology and Evolution, 2023
Demographic correlations are pervasive in wildlife populations and can represent important secondary drivers of population growth. Empirical evidence suggests that correlations are in general positive for long‐lived species, but little is known about the
Kate Layton‐Matthews   +8 more
doaj   +1 more source

Osteological correlates of the respiratory and vascular systems in the neural canals of Mesozoic ornithurines Ichthyornis and Janavis

open access: yesThe Anatomical Record, EarlyView.
Abstract In birds, the neural canal houses a variety of anatomical structures including the spinal cord, meninges, spinal vasculature, and respiratory diverticula. Among these, paramedullary diverticula and the extradural dorsal spinal vein may leave behind osteological correlates in the form of pneumatic foramina and fossae, and a bilobed geometry of ...
Jessie Atterholt   +5 more
wiley   +1 more source

Interspecific synchrony of seabird population growth rate and breeding success [PDF]

open access: yes, 2013
Environmental variability can destabilize communities by causing correlated interspecific fluctuations that weaken the portfolio effect, yet evidence of such a mechanism is rare in natural systems.
Ojanguren, Alfredo F.   +6 more
core   +1 more source

The influence of rivers on seabird foraging ecology

open access: yesBiological Reviews, EarlyView.
ABSTRACT Rivers act as vital arteries to the world's oceans, delivering fresh water and nutrients that sustain marine ecosystems. Globally, river flow increasingly is being altered by climate change and anthropogenic pressures; yet the significance of rivers to predatory marine species, such as seabirds, and the extent to which river‐related changes ...
Julia B. Morais   +2 more
wiley   +1 more source

Multi-Species Feeding Association Dynamics Driven by a Large Generalist Predator

open access: yesFrontiers in Marine Science, 2021
Multi-species feeding associations (MSFAs) are temporary communities of animals exploiting the same or co-occurrent resources. Their dynamics are species dependent, often creating competitive interactions, but they can also increase foraging efficiency ...
Julia Gostischa   +4 more
doaj   +1 more source

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