Ecology

Climate & Biodiversity ■ Regional climate interacts with regional biota & substrate to produce large, easily recognizable community units called “Biomes“. ■ Climatic climax biodiversity has been found in “Biome“. ■ In biomes life forms reflects major features of climate & determines structural nature of habitats for animals. ■ Provides …

Geographical Positioning System ■ Actual positioning of individual points on earths surface identified by geometrical system of latitudes & longitudes. ■”Altitude” –vertical elevation of an object above sea level (expressed in meter). Latitude And Longitude Accurate Positioning of individual points on the Earth’s surface is made possible by reference to …

Ratargul Swamp Forest is a freshwater swamp forest located in Gowain River, Fatehpur Union, Gowainghat, Sylhet, Bangladesh. It is the only swamp forest located in Bangladesh and one of the few freshwater swamp forests in the world. The forest is naturally conserved under the Department of Forestry, Government of Bangladesh. …

Ecology is a branch of biology that studies and explains the biodiversity of existing ecosystems. Ecological processes have evolutionary implications as well. They interact with genetic diversity via adaptation, microevolution and speciation. Biodiversity expresses the richness of life within a specific bio-bubble. Which has a very substantial history and a …

How The Earth Was created? 13.7 billion years back time & space began with most colossal explosion history ‘Big Bang’ which is believed to have initiated earth. 1st millionth of a second of its existence it expanded from dimensionless point infinite mass and density into a fireball ca. 30 billion …

Biodiversity is the outcome of evolutionary and ecological processes. Biodiversity causes biodiversity. Environmental factors have significant effect on genetic diversity. Evolution is the center of genetic processes. New spp. via micro-evolution or destruction via macro evolution or diversity via mutation. Factors for Biodiversity Creation (A) Primary factor (B) Ecological Templates …

Methods of Calculation of Quantitative Data   Quantitative data for individual species is calculated by the following methods: 1) Frequency = Number of sampling units in which the species occurred/Total number of sampling units studied Relative frequency = Frequency of a sp./Total frequency of all spp. X 100 2) Density …

Vegetation: Definition Vegetation is defined as an assemblage of plants growing together in a particular location. It is characterized either by its component species or by the combination of structure and functional characters that characterize the appearance or physiognomy of vegetation. Vegetation rapidly responds to changes in habitat. If the …

Classification of Global climate The earth can be divided into the following broad climatic zones: Polar and subpolar zone Temperate zone Subtropical zone Tropical zone According to Koppen-Geiger classification, global climate can be divided into the following 6 types: Type A: Equatorial Type B: Arid Type C: Temperate Type D: Cold …

Definition  Phytogeography is the study of distribution of plant species and elucidation of origin of flora. The relative position of the 6 continental land masses and large number of islands play an important role in the distribution of various types of plants over the surface of the earth.   Factors …