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Stegmann, E. W., Primack, R. B., & Ellmore, G. S. (1988). Absorption of nutrient exudates from terrapin eggs by roots of ammophila breviligulata (gramineae). Canadian Journal of Botany, 66(4), 714–718. 
Added by: Sarina Wunderlich (06 Jul 2014 16:17:23 UTC)
Resource type: Journal Article
BibTeX citation key: Stegmann1988
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Categories: General
Keywords: Emydidae, Fortpflanzung - reproduction, Fressfeinde - predators, Graptemys flavimaculata, Habitat - habitat, Nordamerika - North America, Schildkröten - turtles + tortoises, Zeitigung - incubation
Creators: Ellmore, Primack, Stegmann
Collection: Canadian Journal of Botany
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Abstract     
Ammophila breviligulata Fem. is a dominant grass in the nutrient-poor soil of sand dunes along the east coast of North America. More than half its range overlaps that of Malaclemys terrapin Schoepff., a brackish water turtle nesting in sand dunes. Roots of A. breviligulata often proliferate around buried terrapin nests. Gamma spectrometry was used to determine whether nutrients are translocated from terrapin eggs into A. breviligulata. Eggs, collected in the field within 48h of being laid, were injected with 75Se, 137Cs, 54Mn, and 59Fe. Labelled eggs were covered with dune soil in pots containing A. breviligulata. Plants were then monitored over 15 weeks for the appearance of isotopes. Within 45 days, all isotopes except 59Fe were found in aerial shoots, more than 30cm from buried eggs. Iron was absorbed but remained in the roots. The other three isotopes steadily accumulated in shoots for 90 days, after which they began to be translocated to underground tissues. Thus, A. breviligulata absorbs nutrients exuding from buried terrapin eggs, utilizing this novel nutrient supply in mineral-deficient soils of barrier dunes.
Added by: Sarina Wunderlich  
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