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Title: Environmental differences between sites control the diet and nutrition of the carnivorous plant Drosera rotundifolia
Authors: Cook, Joni L.
Newton, Jason
Millett, Jonathan
Keywords: Atmospheric nitrogen deposition
Carnivorous plant
Drosera rotundifolia
Resource availability
Stable isotopes
Issue Date: 2017
Publisher: Springer Verlag © the authors
Citation: COOK, J.L., NEWTON, J. and MILLETT, J., 2017. Environmental differences between sites control the diet and nutrition of the carnivorous plant Drosera rotundifolia. Plant and Soil, doi: 10.1007/s11104-017-3484-6
Abstract: Background and Aims Carnivorous plants are sensitive to small changes in resource availability, but few previous studies have examined how differences in nutrient and prey availability affect investment in and the benefit of carnivory. We studied the impact of site-level differences in resource availability on ecophysiological traits of carnivory for Drosera rotundifolia L. Methods We measured prey availability, investment in carnivory (leaf stickiness), prey capture and diet of plants growing in two bogs with differences in N deposition and plant available N: Cors Fochno (0.62 g m⁻² yr⁻¹, 353 µg l⁻¹), Whixall Moss (1.37 g m⁻² yr⁻¹, 1505 µg l⁻¹). The total N amount per plant and the contributions of prey/root N to the plants’ N budget were calculated using a single isotope natural abundance method. Results Plants at Whixall Moss invested less in carnivory, were less likely to capture prey, and were less reliant on prey-derived N (25.5% compared with 49.4%). Actual prey capture did not differ between sites. Diet composition differed – Cors Fochno plants captured 62% greater proportions of Diptera. Conclusions Our results show site-level differences in plant diet and nutrition consistent with differences in resource availability. Similarity in actual prey capture may be explained by differences in leaf stickiness and prey abundance.
Description: This article will be made available gold open access when published.
Sponsor: UK Natural Environment Research Council through the Life Science Mass Spectrometry Facility (Grant number EK188-15/11)
Version: Accepted for publication
DOI: 10.1007/s11104-017-3484-6
URI: https://dspace.lboro.ac.uk/2134/27352
Publisher Link: https://doi.org/10.1007/s11104-017-3484-6
ISSN: 0032-079X
Appears in Collections:Closed Access (Geography)

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