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dc.contributor.authorVeldsman, L. M.
dc.contributor.authorKylin, H.
dc.contributor.authorBronkhorst, P.
dc.contributor.authorEngelbrecht, I.
dc.contributor.authorBouwman, H.
dc.date.accessioned2019-04-01T12:48:27Z
dc.date.available2019-04-01T12:48:27Z
dc.date.issued2020
dc.identifier.citationVeldsman, L.-M. et al. 2020. A method to determine the combined effects of climate change (temperature and humidity) and eggshell thickness on water loss from bird eggs. Environmental geochemistry and health, 42:781-793. [https://doi.org/10.1007/s10653-019-00274-x]en_US
dc.identifier.issn0269-4042
dc.identifier.issn1573-2983 (Online)
dc.identifier.urihttp://hdl.handle.net/10394/32093
dc.identifier.urihttps://link.springer.com/article/10.1007/s10653-019-00274-x
dc.identifier.urihttps://doi.org/10.1007/s10653-019-00274-x
dc.description.abstractDifferences in bird eggshell thicknesses occur due to numerous factors, including thinning due to persistent organic pollutants. Not only does thinning weaken the shell; weaker shells combined with elevated ambient temperature and changes in humidities may result in changes in water loss rates from the egg contents. Therefore, thinner eggshells raise concern of water being lost faster than normal at lower relative humidities, which may affect hatching. To investigate the combined effects, we developed and tested an effective method that measures water loss through different thickness eggshells at controlled temperatures and relative humidities to assist in ascertaining the combined effects of climate change (temperature and humidity) and changes in eggshell thickness on bird reproduction. The fastest rate of loss was at 40% RH at 40 °C (0.1 mL/cm2/day), and the slowest was at 22 °C at 80% RH (0.02 mL/cm2/day). Eggshell thickness had a significant effect on water loss at all humidity treatments, except at the highest temperature and humidity treatment (80% RH and 40 °C). Temperature explained 40% of the variance, RH explained 20%, and interactions between temperature and humidity explained 15% of the variance (repeated-measures, two-way ANOVA). Generalized linear analyses revealed that both factors temperature and humidity contributed significantly in any two-way combinations. We have laid the ground for a system to test the combined effects of temperature and humidity changes associated with climate change and eggshell thinning associated with pollutants, on water loss across eggshellsen_US
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.subjectClimate changeen_US
dc.subjectWater lossen_US
dc.subjectEggshell thicknessen_US
dc.subjectPersistent organic pollutionen_US
dc.subjectEnvironmental contaminationen_US
dc.titleA method to determine the combined effects of climate change (temperature and humidity) and eggshell thickness on water loss from bird eggsen_US
dc.typeArticleen_US
dc.contributor.researchID10063773 - Bouwman, Hindrik
dc.contributor.researchID27256839 - Kylin, Johan Henrik
dc.contributor.researchID22923993 - Engelbrecht, Ilana
dc.contributor.researchID24930024 - Veldsman, L.M.
dc.contributor.researchID13133624 - Bronkhorst, Petrus Louwrens


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