caa a22 4500 469098090 CHVBK 20180323133037.0 cr unu---uuuuu 170328e19920801xx s 000 0 eng 10.1007/BF00317800 doi (NATIONALLICENCE)springer-10.1007/BF00317800 Sallabanks Rex Department of Biology, University of Oregon, 97403, Eugene, OR, USA aut Fruit fate, frugivory, and fruit characteristics: a study of the hawthorn, Crataegus monogyna (Rosaceae) [Elektronische Daten] [Rex Sallabanks] Summary: The fate of fruits from a population of European hawthorn (Crataegus monogyna) in western Oregon, USA, was examined over a two-year period. Only one frugivore, the American robin (Turdus migratorius) foraged on the C. monogyna fruits, making this an unusually straightforward fruit-frugivore system. Dispersal efficiency was low, with an average 21% of seeds being dispersed (carried away from parent plants) each year; the most common fate of fruits was to simply fall. Robins dropped 20% of the fruits that they picked, and defecated/regurgitated 40% of the fruits (seeds) that they swallowed, beneath parent plants. One trait, gruit abundance, strongly affected the probability of bush visitation by robins, bushes with larger fruit displays being preferred. Both absolute dispersal success (number of seeds) and dispersal efficiency (proportion of seeds; success per propagule) were also found to be correlated most strongly with initial fruit abundance. Individual plant fecundity and fruit quality were found to vary little between years; as a result, dispersal efficiencies for individual plants were also annully consistent. Larger (older) plants produced more fruits and therefore had higher fitness. These results suggest that the optimal fruiting strategy for C. monogyna is therefore to get as big as possible as quickly as possible by delaying fruiting until later in life. Springer-Verlag, 1992 Seed dispersal nationallicence Seed waste nationallicence Fruit abundance nationallicence American robins nationallicence Oecologia Springer-Verlag 91/2(1992-08-01), 296-304 0029-8549 91:2<296 1992 91 442 https://doi.org/10.1007/BF00317800 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00317800 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Sallabanks Rex Department of Biology, University of Oregon, 97403, Eugene, OR, USA aut NATIONALLICENCE 773 0- Oecologia Springer-Verlag 91/2(1992-08-01), 296-304 0029-8549 91:2<296 1992 91 442 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer