http://doi.org/10.3732/ajb.1200381 De Hert, K., Jacquemyn, H., Provoost, S., & Honnay, O. (2012). Absence of Recruitment Limitation in Restored Dune Slacks Suggests That Manual Seed Introduction Can Be a Successful Practice for Restoring Orchid Populations. http://doi.org/10.1111/j.1526- 100X.2012.00925.x De hert, K., Jacquemyn, H., Van Glabeke, S., Roldán-Ruiz, I., Vandepitte, K., Leus, L., & Honnay, O. (2012). Reproductive isolation and hybridization in sympatric populations of three Dactylorhiza species (Orchidaceae) with different ploidy levels. Annals of Botany, 109(4), 70920. http://doi.org/10.1093/aob/mcr305 11 Dudareva, L. V., Nokhsorov, V. V., Rudikovskaya, E. G., & Petrov, K. A. (2015). Fatty- Acid Profiles of Aerial Parts of Three Horsetail Species Growing in Central and Northern Yakutia. Chemistry of Natural Compounds, 51(2), 220223. http://doi
A nitrogenous compound uptake through, roots/root hairs; named use of mineral in plants; ref. to humus; ref. to beneficial role of humus in soil; e.g. increase water retention, improve soil structure, stabilize soil max 4 [4] 21. (a) (i) sympatric; 1 (ii) ranges of two species, overlap/close together/AW; no geographical barrier; ref to behavioural/genetic/physiological/prezygotic barrier; correct ref to named area of map; max 2 (b) ref to mate selection by size; ie large with large or small with small ref to monogamy;
annaabi.ee 
