THE EFFECT OF PICKING ON THE FLOWERING OF BLUEBELL, <i>SCILLA NON‐SCRIPTA</i>

Peace, T. R.; Gilmour, J. S. L.

doi:10.1111/j.1469-8137.1949.tb05113.x

Cited by 15 publications

(5 citation statements)

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“…Leaves develop from initials laid down in the previous year, and if they are destroyed, no more are produced that year. Consequently, severe disturbances such as trampling by animals or humans, damage by tree‐logging, mowing and grazing have very adverse effects on both growth and on the storage of assimilates in the bulb, an effect which is greater the earlier in the year the damage occurs (Peace & Gilmour 1949; Blackman & Rutter 1954).…”

Section: Discussionmentioning

confidence: 99%

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Over the (range) edge: a 45‐year transplant experiment with the perennial forest herbHyacinthoides non‐scripta

et al. 2007

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Summary1 Most experimental populations of perennial forest herbs have been monitored for only a few years and thus only apply to germination and early seedling survival. Moreover, there is a lack of long-term, quantitative data on the rates of spread of populations. 2 We report the results of a cross-range-edge transplant experiment established in 1960 with the perennial forest herb Hyacinthoides non-scripta. We evaluated determinants of survival/extinction, performance and migration distances and patterns of 27 transplanted populations after a period of 45 growing seasons. 3 Of 27 experimental populations of Hyacinthoides non-scripta implanted in 1960, 11 (41%) were still found in 2005-06. Population survival was independent of soil type and changes in the vegetation layer. In contrast, physical disturbance of the soil and major changes in the tree layer as a result of forest management were the main determinants of population extinction. Current population surface areas ranged from 0.23 to 26.23 m 2 . Plant height, leaf length, number of flowers and seed size were generally lower in the introduced populations than in the source populations. However, densities and proportions of non-flowering adults were higher, especially in the larger populations. This suggests that these populations are still expanding with more but younger, and thus smaller, individuals. 4 Observed migration rates were very low, ranging from 0.006 my − 1 to 0.06 my − 1 . Migration occurred by the establishment of isolated individuals, which were later absorbed by the advancing wave of the main population. The spread projected for the largest population in the next 45 years is only 14 m for the main population front and 42 m for the furthest individual. 5 Our results may be representative of population spread for slow dispersing forest plant species after occasional long-distance dispersal events across a range edge. However, the slow rates of spread indicate that, even if such events occur, it can take a very long time to establish viable population sizes.

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Section: Discussionmentioning

confidence: 99%

“…Plants flower for the first time around the fifth year (Woodhead 1904). In contrast to picking of the inflorescence (Peace & Gilmour 1949), mowing or grazing and trampling have been reported to have an adverse effect on both growth and on the storage of assimilates in the bulb (Blackman & Rutter 1954).…”

Section: Methodsmentioning

confidence: 99%

Over the (range) edge: a 45‐year transplant experiment with the perennial forest herbHyacinthoides non‐scripta

et al. 2007

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“…The mean reductions in leaf length for unexclosed bluebells in Monks Wood were 43% in April 1995 and 33% in May (Table 111). Damaged bluebell leaves are not replaced, and significant damage leads to loss of vigour in subsequent years including the production of smaller plants (Peace & Gilmour, 1949;Blackman & Rutter, 1954;Grime et al, 1988). Tubbs (1986) has described a locality in the New Forest where deer grazing reduced bluebell size.…”

Section: Discussionmentioning

confidence: 99%

“…In addition, at Monks Wood, a significantly higher proportion of inflorescences was bitten off. A third possible effect is that leaf damage can affect the number of bluebell inflorescences subsequently being produced (Peace & Gilmour, 1949;Tubbs, 1986). Changes over a period of several years in inflorescences per unit area are currently being studied in Monks Wood and will be reported separately.…”

Section: Discussionmentioning

confidence: 99%

Effects of grazing by muntjac (Muntiucus reevesi) on bluebells (Hyucinthoides non‐scripta) and a field technique for assessing feeding activity

Cooke

1997

Journal of Zoology

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“…The flowers are selffertile, but seed set is higher when the flowers are outcrossed (Wilson, 1959). An experiment carried out at Kew found careful picking of the flowers to be harmless, but trampling of the leaves soon weakened the plants (Peace & Gilmour, 1949).…”

mentioning

confidence: 99%