Klemow, Kenneth M. and D. J. Raynal. 1978. THE POPULATION DYNAMICS OF MELILOTUS ALBA IN A LIMESTONE QUARRY. Contributed paper: Ecological Society of America meeting. Abstract: Bulletin of the Ecological Society of America 59:110.
Emergence, seedling establishment, survival, and reproductive success were examined in a population of the biennial Melilotus alba Desr. that was colonizing an abandoned limestone quarry near Syracuse, New York. The seed pool was evaluated and cohorts of newly emergent seedlings were studied in 1976 and 1977 by mapping individuals within permanent quadrats on high and low density sites. In both years maximum field germination was in the spring with 116.0 and 15.5 seedlings per 0.25m2 on the dense and sparse sites respectively in 1976, while 84.1 and 11.4 emerged in 1977. Survivorship of this first cohort was similar on the two sites with a few individuals overwintering. On both sites, cohorts emerging later in the season had poorer germination levels, survivorship, and developmental success than earlier emergents. The population on the open, sparse site is subjected to periods of hot, dry conditions while the surrounding vegetation acts to buffer such extremes on the dense site. Differences in germination levels are probably due to more seeds being produced and deposited on the dense site.