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autotrophic and heterotrophic succession the succession where initially the green plants are much greater in quantity than the animals is known as
processes in succession - ecologywhether succession is primary or secondary in terrestrial or aquatic ecosystems the basic processes involved in
autogenic and allogenic succession in many cases the living beings of an ecosystem modify their environment considerably by their growth death and
secondary succession - community changesecondary succession is the sequential development of biotic communities after the complete or partial
primary succession - community changein primary succession on a terrestrial site the new site is first colonised by a few hardy pioneer species that
succession - community changethe factors like fire floods and human interventions affect an ecosystem considerably they often lead to the depletion
community changeecosystems are dynamic entities in which a number of events take place associated with the biotic communities of the ecosystem are
dominance - synthetic charactersit is a characteristic of vegetation which expresses the predominating influences of one or more species in a stand
physiognomy and pattern physiognomy is the general appearance of vegetation as determined by the growth form of dominant species it may be considered
frequency - synthetic charactersthis term refers to the degree of dispersion of individual species in an area and is usually expressed in terms of
species diversity - synthetic charactersit is one of the most important and basic characteristics of a community there are various ways of measuring
fidelity - synthetic charactersfidelity refers to the degree to which a species is restricted in its occurrence to a particular kind of community the
presence and constancy - synthetic characterspresence and constancy refer to how uniformly a species occurs in different stands in a community for
weight of plants - quantitative charactersweight is one of the most important quantitative characteristics of plants quantitatively growth is best
height of plants - quantitative charactersthe height of a plant is a very good indicator of their general performance and therefore can be employed
herbage area or vegetation coverherbage area or vegetation cover is an important aspect of vegetation study in understanding the nature of a
quantitative characters - population densitydensity denotes the average number of individuals of a particular species in a unit area in other words
sociability gregariousnesssociability refers to the nature of grouping of individual plants that is whether they grow singly in patches in colonies
therophytes - classes of life formthese are annual plants of the summer season or of the favourable season they complete their life cycles in a
hemicryptophytes - classes of life formin this case the perennating buds or organs are situated at the soil surface where they are protected by soil
life forms - qualitative charactersthe form and structure of terrestrial communities are determined by the nature of vegetation vegetation may be
vitality and vigour - qualitative charactersvitality is related to the condition of a plant and its capacity to complete its life cycle while vigor
animals in the community - nature and structure of communitythe animals in the community are directly or indirectly dependent on the plants also time
phenology of different speciesthe phenology of different species present in a community may differ from each other significantly it is these
periodicity phenology aspectionit refers to the study of seasonal changes in the community that is the periodic phenomena of organisms in relation to