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E. Álvarez-Buylla (1994)
Density Dependence and Patch Dynamics in Tropical Rain Forests: Matrix Models and Applications to a Tree SpeciesThe American Naturalist, 143
0884# Com! paring plant life histories using elasticity analysis] the importance of the life span and the number of life!cycle stages[ Oecolo`ia\ 093\ 68Ð73[ van Groenendael\ J[ + Slim\ P
Mark Boyd (1986)
The Ecology Of Homostyle And Heterostyle Primroses Primula vulgaris Huds.
Chazdon Chazdon, Field Field (1987)
Photographic estimation of photosynthetically active radiation: evaluation of a computarized technique.Oecologia, 73
0875# A generalized algorithm for deter! mining category size
0886a# Canopy closure rate and forest structure[ Ecolo`y\ 67\ 0444Ð0451[ Valverde\ T[ + Silvertown\ J[ "0886b# A metapopulation model for Primula vul`aris\ a temperate forest under! storey herb
J. Barkham (1992)
The effects of coppicing and neglect on the performance of the perennial ground flora
J. Groenendael, H. Kroon, H. Caswell (1988)
Projection matrices in population biology.Trends in ecology & evolution, 3 10
0882# Use of Hemispherical Photo`raphs in Forest Ecolo`y] Calculation of Absolute Amount of Radiation Beneath the Forest Canopy
M. Cipollini, Dorothy Wallace-Senft, D. Whigham (1994)
A model of patch dynamics, seed dispersal, and sex ratio in the dioecious shrub Lindera benzoin (Lauraceae)Journal of Ecology, 82
J. Silvertown, M. Franco, I. Pisanty, A. Mendoza (1993)
comparative plant demography - relative importance of life-cycle components to the finite rate of increase in woody and herbaceous perennialsJournal of Ecology, 81
J. Piper, Brian Charlesworth, Deborah Charlesworth (1984)
A high rate of self-fertilization and increased seed fertility of homostyle primrosesNature, 310
B. Collins, K. Dunne, S. Pickett (1985)
Chapter 12 – Responses of Forest Herbs to Canopy Gaps
E. Álvarez-Buylla, M. Slatkin (1991)
Finding confidence limits on population growth rates.Trends in ecology & evolution, 6 7
Margaret Anderson (1964)
Studies of the Woodland Light Climate: I. The Photographic Computation of Light ConditionsJournal of Ecology, 52
S. Pickett, P. White (1986)
The Ecology of Natural Disturbance and Patch Dynamics
D. Kennedy, M. Swaine (1992)
Germination and Growth of Colonizing Species in Artificial Gaps of Different Sizes in Dipterocarp Rain ForestPhilosophical Transactions of the Royal Society B, 335
J. Barkham (1992)
Population dynamics of thez wild daffodil (Narcissus pseudonarcissus). IV : Clumps and gapsJournal of Ecology, 80
J. Groenendael, P. Slim (1988)
The contrasting dynamics of two populations of Plantago lanceolata L. classified by age and size.Journal of Ecology, 76
S. Harrison (1991)
Local extinction in a metapopulation context: an empirical evaluationBiological Journal of The Linnean Society, 42
J. Silvertown, M. Franco, E. Menges (1996)
Interpretation of elasticity matrices as an aid to the management of plant populations for conservationConservation Biology, 10
L. Pitelka, S. Hansen, J. Ashmun (1985)
Population Biology of Clintonia Borealis: I. Ramet and Patch DynamicsJournal of Ecology, 73
Juan Silva, J. Raventós, H. Caswell (1990)
Fire and fire exclusion effects on the growth and survival of two savanna grasses.Acta Oecologica-international Journal of Ecology, 11
C. Horvitz, D. Schemske (1986)
Seed dispersal and environmental heterogeneity in a neotropical herb: a model of population and patch dynamics
E. Álvarez-Buylla, M. Slatkin (1994)
Finding Confidence Limits on Population Growth Rates: Three Real Examples RevisedEcology, 75
T. Valverde, J. Silvertown (1997)
CANOPY CLOSURE RATE AND FOREST STRUCTUREEcology, 78
T. Hara, M. Wakahara (1994)
Variation in individual growth and the population structure of a woodland perennial herb, Paris tetraphylla.Journal of Ecology, 82
J. Ehrlén (1995)
Demography of the Perennial Herb Lathyrus Vernus. II. Herbivory and Population DynamicsJournal of Ecology, 83
Werner Werner, Caswell Caswell (1977)
Population growth rates and age‐ vs. stage‐ distribution models for teasel.Ecology, 58
H. Damman, M. Cain (1998)
Population growth and viability analyses of the clonal woodland herb, Asarum canadenseJournal of Ecology, 86
N. Brokaw (1985)
Chapter 4 – Treefalls, Regrowth, and Community Structure in Tropical Forests
C. Horvitz, D. Schemske (1995)
Spatiotemporal Variation in Demographic Transitions of a Tropical Understory Herb: Projection Matrix AnalysisEcological Monographs, 65
H. Kroon, A. Plaisier, J. Groenendael, H. Caswell (1986)
Elasticity: The Relative Contribution of Demographic Parameters to Population Growth RateEcology, 67
T. Valverde, J. Silvertown (1997)
An integrated model of demography, patch dynamics and seed dispersal in a woodland herb, Primula vulgarisOikos, 80
E. Álvarez-Buylla, R. García-Barrios (1991)
Seed and Forest Dynamics: A Theoretical Framework and an Example from the NeotropicsThe American Naturalist, 137
J. Runkle, T. Yetter (1987)
Treefalls Revisited: Gap Dynamics in the Southern AppalachiansEcology, 68
H. Caswell (1978)
A general formula for the sensitivity of population growth rate to changes in life history parameters.Theoretical population biology, 14 2
E. Álvarez-Buylla, M. Slatkin (1993)
Finding confidence limits on population growth rates : Monte Carlo test of a simple analytic methodOikos, 68
C. Horvitz, D. Schemske (1994)
Effects of Dispersers, Gaps, and Predators on Dormancy and Seedling Emergence in a Tropical HerbEcology, 75
P. Bierzychudek (1982)
LIFE HISTORIES AND DEMOGRAPHY OF SHADE‐TOLERANT TEMPERATE FOREST HERBS: A REVIEWNew Phytologist, 90
0874# The demography of tropical trees in the context of forest gap dynamics[ Plant Population Ecolo`y
J. Barkham (1980)
Population Dynamics of the Wild Daffodil (Narcissus Pseudonarcissus): I. Clonal Growth, Seed Reproduction, Mortality and the Effects of DensityJournal of Ecology, 68
T. Valverde, J. Silvertown (1995)
spatial variation in the seed ecology of a woodland herb (primula vulgaris) in relation to light environmentFunctional Ecology, 9
M. Cipollini, D. Whigham, J. O'neill (1993)
Population Growth, Structure, and Seed Dispersal in the Understory herb Cynoglossum virginianum: a Population and Patch Dynamics ModelPlant Species Biology, 8
S. Kawano, T. Takada, S. Nakayama, A. Hiratsuka (1987)
Demographic differentiation and life-history evolution in temperate woodland plants
P. Werner, H. Caswell (1977)
Population Growth Rates and Age Versus Stage-Distribution Models for Teasel (Dipsacus Sylvestris Huds.)Ecology, 58
Enright Enright, Franco Franco, Silvertown Silvertown (1995)
Comparing plant life histories using elasticity analysis: the importance of the life span and the number of life‐cycle stages.Oecologia, 104
Anderson Anderson (1964)
The photographic computation of light conditions.Journal of Ecology, 52
Mark Boyd, J. Silvertown, C. Tucker (1990)
Population ecology of heterostyle and homostyle Primula vulgaris : growth, survival and reproduction in field populationsJournal of Ecology, 78
E. Menges, R. Dolan (1998)
Demographic viability of populations of Silene regia in midwestern prairies: relationships with fire management, genetic variation, geographic location, population size and isolationJournal of Ecology, 86
growth\ survival and reproduction in _eld populations
0874# Treefalls\ regrowth and community struc! ture in tropical forests[ The Ecolo`y of Natural Dis! turbances and Patch Dynamics
Lande Lande (1988)
Demographic models of the northern spotted owl ( Strix occidentalis caurina ).Oecologia, 75
J. Silvertown, M. Franco (1993)
Plant Demography and Habitat: A Comparative ApproachPlant Species Biology, 8
T. Valverde, J. Silvertown (1997)
A METAPOPULATION MODEL FOR PRIMULA VULGARIS, A TEMPERATE FOREST UNDERSTOREY HERBJournal of Ecology, 85
P. Bierzychudek (1982)
The Demography of Jack‐in‐the‐Pulpit, a Forest Perennial that Changes SexEcological Monographs, 52
1 Gaps in the forest canopy allow establishment of many understorey species. As gaps close, their demographic behaviour is affected by changing environmental conditions. A demographic analysis of Primula vulgaris populations in forest patches with varying canopy openness was carried out to investigate the effect of forest canopy dynamics on the demography of this forest understorey herb. 2 Eight P. vulgaris populations across a range of light conditions were studied in three deciduous temperate forests in Britain. Demographic data were collected in each population during summer 1992, 1993 and 1994, and stage‐based population projection matrices were built to describe their demography for two growth periods (1992–93 and 1993–94). 3 Population growth rate (λ) varied from 0.97 to 1.98 in 1992–93, and from 0.88 to 1.23 in 1993–94. There was a significant positive correlation between λ and diffuse light for the two periods studied: generally, population growth rate was lower in darker patches, implying that populations decline as the canopy closes. Lower λ‐values in 1993–94 were the result of increased mortality and decreased fecundity compared to 1992–93. In most cases the observed population structures were significantly different from the calculated stable‐stage distributions. 4 Sensitivity analysis showed that λ was most sensitive to changes in matrix transitions that corresponded to growth from small to adult stages, especially those that implied fast growth. Elasticity analysis revealed that the contribution of fecundity elements to λ was small, but populations in brighter patches showed comparatively higher fecundity elasticities than populations under the closed canopy. High elasticities corresponded to the entries that implied growth (especially in brighter patches) or persistence in adult categories (predominantly in darker patches). 5 The observed variation in the demography of P. vulgaris in different patches along the forest regeneration cycle stresses the importance of studying the variation in plant population dynamics across the range of habitat patches in which the plant naturally occurs.
Journal of Ecology – Wiley
Published: Aug 1, 1998
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