The Ontogenetic Spectrum as an Indicator of the Status of Plant Populations (original) (raw)
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Smirnova O.V., Palenova M.M., Komarov A.S. Ontogeny of different life forms of plants and specific features of age and spatial structure of their populations // Russian Journal of Developmental Biology, Vol. 33, No. 1, 2002, pp. 1–10., 2002
Materials have been generalized that were accumulated in population-ontogenetic studies of plants and leading features of the ontogeny of plants have been noted that determine specific structural features of their populations. The described patterns allowed the authors to develop simulation models of plant population dynamics. The results of simulation are provided, and they are compared to the empirical data. Problems have been considered that concern the influence of specific features of development of different plant biomorphs on the genetic structure of populations and biocoenotic processes.
A COMPARATIVE DEMOGRAPHY OF PLANTS BASED UPON ELASTICITIES OF VITAL RATES
Ecology, 2004
A Comparative demography of plants based upon elasticities of vital rates Journal Article How to cite: Franco, Miguel and Silvertown, Jonathan (2004). A Comparative demography of plants based upon elasticities of vital rates. Ecology, 85(2), pp. 531-538. For guidance on citations see FAQs. c [not recorded] Version: [not recorded] Link(s) to article on publisher's website:
Gatzuk L.E., Smirnova O.V., Vorontzova L.I., Zaugolnova L.B., Zhukova L.A. Age states of plants of various growth forms: a review // Journal of Ecology. 1980. V. 68. N. 3. P. 675-696., 1980
Analysis of more than one-hundred plant species has shown certain con- sistently-recognizable biological age states in their ontogeny. These are called seed, seedling, juvenile, immature, virginile, reproductive (young, mature and old), subsenile and senile. Each age state may be characterized by a particular combination of quanti- tative and qualitative features. Qualitative features used to define the various age states are: the manner of nutrition, the type of growth, the pattern of branching of the root and shoot systems, leaf form, the presence of a particular type of shoot, the ability to reproduce by seeds, the balance between living and dead structures, and the balance between actively-growing and fully-formed structures. Quantitative characteristics change uninterruptedly during ontogeny, and as a rule follow a unimodal curve. Age states of species representative of a variety of growth forms have been distinguished and described. These include trees, shrubs, semi-shrubs, low semi- shrubs, firm- and loose-tussock plants, and the following categories of perennial herbs: long- and short-rhizomed, root-suckering, stoloniferous, bulbous, tuber- bulbous, tuberous and tap-rooted. On the basis of these age-state studies, three main types of ontogeny in polycarpic plants are defined, using as characterizing features architectural changes of the individual plant, the form and timing of break-up of the individual plant, and the extent of rejuvenation
2000
In these supplementary materials, the abbreviations pdf, pmf, pgf stand for probability density function, probability mass function and probability generating function, respectively. The quantities fX and gX denote the pdf and pgf of the random variable X. P(,k ) and B(N,p,k) denote the pmfs of P( ) and B(N,p), respectively, evaluated at k. G(,,x ) denotes the pdf of G(,
Smirnova O.V., Chistyakova A.A., Zaugolnova L.B., Evstigneev O.I., Popadiouk R.V., Romanovsky A.M. Ontogeny of a tree // Botanical journal. 1999. Vol. 84. № 12. P. 8-20., 1999
The concept of the discrete ontogenesis of plants, by the first, was made by T. А. Rabotnov (1950). Detailed ontogenetic researches of tree plants had begun since 1970th. At present, the most tree species ontogeny have been described in the East-European forests. Development of all plants has the universal periods that we divide into the structural-functional stages. The last ones were named «ontogenetic stages». The ontogenetic stages mark biological age of plants. Individuals of different species show quite similar enlistment of ontogenetic stages. Each stage in marked by specific growth and morphological characteristics. The plants of the each ontogenetic stage can be distinguished by vitality level. Each vitality level is characterized by specific signs. The vitality of plants may be changed many times during ontogeny. The plants of different life forms and type of propagation have specific traits of ontogeny. The species show high individuality of ontogenetic behavior; it is clear especially in the heterogeneous natural forest community. These results we take into account as a basis for forecast of behavior of species and their groups in permanent changing mosaic environment of natural community. Key w ords: ontogeny, biological age, ontogenetic stages, vitality level, life forms.