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Validation of the Doubly Labeled Water Method in Growing Precocial Birds: The Importance of Assumptions Concerning Evaporative Water Loss
The doubly labeled water (DLW) method was validated against respiration gas analysis in growing precocial chicks of the black‐tailed godwit and the northern lapwing and it was found that there was no relationship between the relative growth rate of the chick and the relative error of the DLW method.
Quantifying the effect of predators on endangered species using a bioenergetics approach: Caspian terns and juvenile salmonids in the Columbia River estuary
The study was prompted by concern that Caspian tern predation might be a substantial source of mortality to out-migrating juvenile salmonids from throughout the Columbia River basin.
Carrying large fuel loads during sustained bird flight is cheaper than expected
- A. Kvist, Å. Lindström, Martin Green, T. Piersma, G. Visser
- Environmental Science, BiologyNature
- 18 October 2001
The most likely explanation is that the efficiency with which metabolic power input is converted into mechanical output by the flight muscles increases with fuel load, which will influence current models of bird flight and bird migration.
Avian metabolism: Costs of migration in free-flying songbirds
- M. Wikelski, Elisa M. Tarlow, A. Raim, Robert H. Diehl, R. Larkin, G. Visser
- Environmental ScienceNature
- 12 June 2003
The results confirm the counterintuitive prediction that songbirds expend double the amount of energy during stopovers that they spend on flight over their entire migration.
The emergence of fetal behaviour. II. Quantitative aspects.
Fuel use and metabolic response to endurance exercise: a wind tunnel study of a long-distance migrant shorebird.
- S. Jenni-Eiermann, L. Jenni, A. Kvist, Å. Lindström, T. Piersma, G. Visser
- BiologyJournal of Experimental Biology
- 15 August 2002
The relationships between energy expenditure, body mass loss and metabolic pattern suggest that a higher individual energy expenditure entails a higher rate of catabolism of both lipids and protein and not a shift in fuel substrate.
Compensation in resting metabolism for experimentally increased activity
- C. Deerenberg, G. Overkamp, G. Visser, S. Daan
- BiologyJournal of Comparative Physiology □ B
- 8 October 1998
Surprisingly, the daily energy budget was, on average, reduced slightly when birds were subjected to a high workload, and the strategy of energetic compensation observed during the night was extended into the inactive hours of the day.
The Energetic Cost of Feather Synthesis Is Proportional to Basal Metabolic Rate
It was concluded that neither diet nor latitudinal constraints alone could explain the differences found between species, and the tight association of Cf and BMRm between species suggests that feather production costs include more than the costs for keratin synthesis: they mainly consist of costs of maintaining tissues necessary for feather production.
Breast milk and energy intake in exclusively, predominantly, and partially breast-fed infants
There was no evidence that breast milk was replaced by water, tea or juice in PBF compared to EBF infants, and the energy intake in BF+CM/FM infants tended to be 20% above the latest recommendations (1996) for breast-fed and 9% above those for formula-fed infants.
ENERGY AND WATER BUDGETS OF LARKS IN A LIFE HISTORY PERSPECTIVE: PARENTAL EFFORT VARIES WITH ARIDITY
The hypothesis that decreasing food and water availability favor lower energy and water requirements of parents and young, reduced growth rates, and smaller clutch sizes with increasing aridity is supported.