THEORIES OF SUCCESSION
sanaThere are three theories of succession about climax communities: Monoclimax theory This theory was put forward by an American ecologist Frederick Clements in 1916. According to this theory there is…
Hydrosere stages (Succession in water bodies)
Hydrosere succession occurs in water bodies undergo. It has following stages: Submerged stage The plants are entirely submerged near the bank of lake or pond. These are the pioneers of…
Xerosere (Succession in dry conditions) – xerarch
The succession occur in dry condition is called Xerosere (xerarch ) . It undergoes following stages. Crustose lichen stage Crustose are land lifeless structure. The crustose may have an external…
DEVELOPMENT OF SUCCESSION
The process of community development is called succession. Different stages are involved in the development of succession in a bare area. These stages are migration ecesis. aggregation, competition reaction and…
PLANT SUCCESSION
The process of community development is called succession. Community changes alter the ecosystem . This change favours the competitors. Thus the species replace one another. Finally a stable. self sustaining…
SAMPLING METHODS
There are following two types of sampling methods: (a) Transect method A transect is a long rectangular sample plot. It is used to study variations in vegetation. Vegetation varies with…
FAMILY 3: Fabaceae – Characters , Floral formula & Species
sidraDiagnostic characters Habit: Annual or perennial. I lerbs. shrubs, vines, or tree. Roots: Fibrous tap root often develops nodules in herbs. Nitrogen Fixing bacteria live in these nodules. Stem: Herbaceous…
ATTRIBUTES OF THE PLANT COMMUNITIES
The attributes (characteristics) of a commit), are classified into three main groups: analytic. synthetic and physiognomic. (a) Analytic characteristics The characteristics which can be analyzed by quantitative or qualitative methods…
CONCEPTS OF PLANT COMMUNITY
The populations of different species living in the same habitat is called community. According to Oosting (1956). plant community is an aggregation of individuals with mutual relationships among themselves and…
Objective For Population Ecology
Multiple Choice Questions (MCQs) The number of indiyiduals living in a unit area is called: (a) Density (b) Natality (c) Mortality (d) Dispersion The rate at which the new individuals…