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Sink or swim: strategies for cost-efficient diving by marine mammals.
Video sequences of freely diving seals and whales wearing submersible cameras reveal a behavioral strategy that improves energetic efficiency in these animals and allows marine mammals to increase aerobic dive duration and achieve remarkable depths despite limited oxygen availability when submerged.
From wind to whales: trophic links in a coastal upwelling system
The migratory movements of the Califor- nia blue whale probably reflect seasonal patterns in productivity in other foraging areas similar to those the authors describe for Monterey Bay.
Severity of the effects of invasive rats on seabirds: a global review.
- H. Jones, B. Tershy, +4 authors G. Howald
- Biology, MedicineConservation biology : the journal of the Society…
- 1 February 2008
Assessment of the effects of rats on seabirds can be improved by data derived from additional experimental studies, with emphasis on understudied seabird families such as Sulidae,Phalacrocoracidae, Spheniscidae, Fregatidae, Pelecanoididae, Phaethontidae, and Diomedeidae and evaluation of rat impacts in tropical regions.
Foraging Behavior and Physiological Adaptation for Diving in Thick‐Billed Murres
Thick-billed Murres probably concentrate their foraging effort at times when prey is most available as it migrates closer to the surface in the evening as part of the deep scattering layer, given their relatively small size and limited oxygen storage capabilities.
Introduced Predators Transform Subarctic Islands from Grassland to Tundra
It is shown that the introduction of arctic foxes to the Aleutian archipelago induced strong shifts in plant productivity and community structure via a previously unknown pathway.
Mechanical versus physiological determinants of swimming speeds in diving Brünnich's guillemots.
- J. Lovvorn, D. Croll, G. Liggins
- Environmental Science, MedicineThe Journal of experimental biology
- 1 July 1999
Diving guillemots can optimize their mechanical efficiency (drag) with little change in net physiological efficiency, and the potential use of heat from inefficient muscles for thermoregulation is suggested.
Diving metabolism and thermoregulation in common and thick-billed murres
If thermal conductance does not change with decreasing water temperature, murres most likely rely upon increasing metabolism to maintain body temperature, and probably employ activities such as preening, diving, or food-induced thermogenesis to meet this challenge.
The diving behavior of blue and fin whales: is dive duration shorter than expected based on oxygen stores?
Blue whale habitat and prey in the California Channel Islands