Contrasting effects of supplementary feeding of insects or mineral nutrients on the growth and nitrogen and phosphorous economy of pygmy species of Drosera

@article{Karlsson1992ContrastingEO,
  title={Contrasting effects of supplementary feeding of insects or mineral nutrients on the growth and nitrogen and phosphorous economy of pygmy species of Drosera},
  author={P. Staffan Karlsson and John S. Pate},
  journal={Oecologia},
  year={1992},
  volume={92},
  pages={8-13}
}
SummaryGrowth responses and accumulation of N and P were studied in two pygmy south-west Australian species of Drosera following supplementary feeding of arthropods (collembolans, Hypogastrura vernalis and fruit flies, Drosophila melanogaster) and/or a balanced mineral nutrient supplement (N as nitrate) via the roots. One feeding experiment used glasshouse-raised germlings from vegetative propagules (gemmae) of the perennial Drosera closterostigma, the other three (two on D. closterostigma and… 
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Background Citations
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24 Citations

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35 References

STUDIES ON THE NUTRITION AND GROWTH OF DROSERA SPECIES WITH REFERENCE TO THE CARNIVOROUS HABIT

Drosera whittakeri was grown in sand cultures supplemented with inorganic salt solutions lacking either nitrogen, sulphur, phosphorus or the microelements andOptimum growth of Drosera binata was attained by applying insects to plants raised on nitrogen-free medium; addition of inorganic nitrogen to the nutrient solution to plants raise under these conditions inhibited growth.

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  • Biology, Medicine
    Oecologia
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In both species supplementary feeding led to significantly higher dry weights of summer and winter plant, more leaves, more flowers, more seeds, and a larger trapping area, indicating a “fertilizing effect”, and animal food supply is an important limiting factor in the field.

The utilization of nitrogen from insect capture by different growth forms of Drosera from Southwest Australia

The use of the δ 15N technique for studying nutrition of carnivorous species and the ecological significance of insect feeding of different growth forms of Drosera growing in a large range of habitats is discussed.

Arthropod associates and macronutrient status of the red‐ink sundew (Drosera erythrorhiza Lindl.)

Analysis of soil, Drosera components and insect prey found associated with field populations of the Western Australian red-ink sundew concluded that H. vernalis populations in the study area were sufficient to supply 100% of the observed sundew N and P pool, but a negligible proportion of the K pool.

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The feedlng of 15N labelled Drosophila fles to leaf rosettes of Drosera erythrorhiza resulted in the enrichment of leaves, stems and daughter and replacement tubers with 15N, which was traced through two subsequent seasons of growth in order to study the extent of carryover of insect-derived nltrogen between successive generations of tubers.

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The seasonal cycle of uptake and partitioning of nitrogen, phosphorus, potassium, magnesium, sodium, calcium and zinc by Drosera erythrorhiza was studied in natural habitat near Perth, W.A. All…

The significance of carnivory for the fitness of Drosera in its natural habitat

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  • Environmental Science
    Oecologia
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The general catching success, measured as prey biomass per plant biomass, was equal in both species of sundew, which agrees with earlier findings that in this bog both species have the same biomass per ground area.

STUDIES ON INSECT-FREE GROWTH, DEVELOPMENT AND NITRATE- ASSIMILATING ENZYMES OF DROSERA ALICIAE HAMET.*

The carnivorous plant, Drosera aliciae, cultivated insect-free from seed showed better growth with nitrogen as NH4Cl and NH4NO3 than with NaNO3, and enzyme levels in ammonium, cheese and nitrate-fed plants were compared.