Definition of some Ecological terminologies

Ecology: The term ecology is derived from the Greek word okios meaning household and Logus meaning study. This is the study of interactions of organisms with their physical environment and with each other.

It is a branch of ecology that studies plant and animal relationships with their surroundings.

Environment: This refers to all the factors acting on an organism. OR the surroundings of an organism.

Community: This is an association of plants and animals living together and affecting each other’s lives and distinguishable from other such associations.

Biosphere: This is the part of the earth in which life exists. It stretches from 12-17km above the surface of the earth and about the same distance into the depth of the sea.

Lithosphere: This is the solid crust of the earth.

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Physical classification of water

Hygroscopic water This is the water present in an air dry soil held tightly by soil solids at a suction pressure greater than 3.1 bar. This type of water cannot be removed by evapouration and roots of higher plants. Only microbial activities have been found to take place here.

Arboreal Habitat

Trunk of a Palm tree A variety of plants and animals live on and sometimes in a palm tree. The plants are epiphytes most of which live in humus and dusts which collects in the leaf bases of a palm tree. The animals are there because of these epiphytes or of the palm tree itself. A palm tree maybe divided into three regions, the crown, trunk and aerial parts of the roots. The common epiphytes found on palm trees are orchids (Diaphanthe, Bulbophyllum) figs, ferns, mosses. The animals found here are small animals like insects and spiders. You can get a soft copy of this book by sending me mail. ukponifueko@gmail.com.

Basic principles of food processing and preservation :easy notes

www.morebooks.de is the online bookstore for purchase of copies PRINCIPLES OF REFRIGERATION STORAGE LOW TEMPERATURE Refrigeration storage room require sufficient capacity/insulation to maintain temperature of + 1oC, it is important to note the numbers of doors and factors causing heat cut. Vegetables and fruits generate different levels of heat. They are stored at different temperatures. The low temperature must be maintained as much as possible. AIR CIRCULAÞION AND HUMIDITY CONTROL Air is required to remove heat from food surface. If the air is too moist there is surface condensation and mould growth, if the air is too dry, food may dry out. Each food has its own relative humidity and temperature. The best relative humidity is equivalent to the moisture in food. Fans are constructed in the refrigeration system in order to enhance air circulation, all the sections of the room receives the low temperature. The hygrometers are read and interpreted correctly to ensure...

SCIENCE is life

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