Ecosystem Flashcards
Who termed ecosystem
Reiter
Father of Indian ecology
Ram Deo Mishra Odum
Father of modern ecology
Eugene P Odum
Basic unit of ecology
Individual
Local population adapted genetically to its particular environment
Exotyoe
No of biomes and divided it
12 and Robert Whitaker
Tropical and subtropical grass lands having scattered trees are called as
Savanna
Vertical distribution of different species
Stratification
The amount of biomass or organic matter produced per unit area over a time period during photosysnthesis
Primary productivity
Net primary productivity
GPP- R
Annual net primary productivity of the whole world
170 billion tons
Net Primary productivity by oceans
55 billion tons
Humus is ——- in nature
Colloidal
Decomposition rate is slow in case of
Lignin and chitin
Decomposition is quicker if
Rich in nitrogen and water soluble substances
Climatic condition for quicker decomposition
Warm and moist environment
Incident Solar energy is—- of total solar energy
Less than 50% of par
Plants capture —— % of the PAR
2-10%
Detrivorous are also called as
Saprotrophs
In aquatic ecosystem which is the major conduit for energy transfer
GFC
In terrestrial ecosystem which is the major conduit of energy transfer
DFC
Each tropic level has a certain mass living material at a particular time called as
Standing crop
Pyramid of number in grass land ecosystem
Upright
Pyramid of biomass is inverted in
Aquatic ecosystem
Pyramid of energy
Always upright
Pyramid of number in forest
Inverted or spindle shaped
Example of a species that occupies more than one tropic level at the same time
Sparrow
Community that is in equilibrium with environment and is the final succession is called
Climax community
The entire sequence of community successively change in a given area are called
Sere
Plant succession in wet areas
Hydrarch and progress from hydrocarbon to mesic
Xerach sussesion
Dry area
Series progress from xerox to mesic
Species that invade a base area
Pioneer species
Primary succession on rock example
Lichens
The amount of nutrients present in the soil at a given time is called
Standing state
Gaseous type of nutrient cycle
Carbon and nitrogen
Sedimentary cycle
Sulphur and phosphorus
Carbon percentage as dry weight in Organisms
49%
Percentage of carbon dissolved in ocean
71%
Who put price tags on natures life support services
Robert Constanza
