1980
DOI: 10.2307/1936767
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The Effects of Nonsugar Nectar Constituents on Estimates of Nectar Energy Content

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Cited by 73 publications
(45 citation statements)
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“…The values on the refractometer were considered as sucrose equivalents (sensu Inouye et al 1980). These data were collected approximately at 11:00 h on the first day of anthesis (male phase) and at the same time on the second day (female phase) for the same flowers (n = 6).…”
Section: Methodsmentioning
confidence: 99%
“…The values on the refractometer were considered as sucrose equivalents (sensu Inouye et al 1980). These data were collected approximately at 11:00 h on the first day of anthesis (male phase) and at the same time on the second day (female phase) for the same flowers (n = 6).…”
Section: Methodsmentioning
confidence: 99%
“…'Nonsugar' solutes in hummingbird nectars may account for about 9% of the apparent sugar content estimated by refractometry (Inouye et al 1980). Of these 'nonsugar' solutes, ions are the most important, but data on nectar ion concentrations are sparse (Waller et al 1972, Nicolson and W.-Worswick 1990.…”
Section: Ionsmentioning
confidence: 99%
“…Equivalent sucrose concentrations were determined using a temperature-corrected pocket refractometer (0-62%; samples greater than 62% were diluted). Owing to the presence of amino acids in floral nectars, these readings are likely to be several per cent higher than true sugar concentrations (Inouye et al 1980). …”
Section: (D ) Nectar Collection In Naturementioning
confidence: 99%