Ecology

Research suggests that three major pools of acidity are common in soils: (1) active acidity due to the H+ ions in the soil solution; (2) salt-replaceable (exchangeable) acidity, involving the aluminum and hydrogen that are easily exchangeable by other cations in a simple unbuffered salt solution, such as KCI; and …

Soil fertility means the ability of a soil to sustain plant growth by providing essential plant nutrients and favorable chemical, physical and biological characteristics as a habitat for plant growth. Soil Fertility Soil fertility is defined as “the quality that enables a soil to provide the proper compounds, in the …

Coral reefs are beautiful underwater ecosystems, look like undersea cities, filled with colourful fishes and numerous wonderful creatures. Sometimes coral reefs are called the ‘rainforests’ of the sea. In this article, the types, formation and importance of Coral Reefs will be discussed in detail. What are Coral Reefs? Coral reefs are …

Soil is the most common medium for plant growth. It also serves as a foundation material for engineering structures, for sewage disposal or mined as ore. However, human’s primary interest in soil has centered on its potential to support plants which provide food, fibre and forest products. In this article, …

Do you know what is Center of Origin? The center of origin is a geographical area where the particular group of organisms (either domesticated or wild) first originated on earth. This is the 3rd part of the topic: Concepts of center of origin of cultivated crops. If you have somehow …

Do you know what is Center of Origin? The center of origin is a geographical area where the particular group of organisms (either domesticated or wild) first originated on earth. This is the 2nd part of the topic: Concepts of center of origin of cultivated crops. If you have somehow …

What is Center of Origin? The center of origin is a geographical area where the particular group of organisms (either domesticated or wild) first originated on earth. Center of Origin & Center of Diversity Many people believed that centers of origin are also centers of diversity. But, the centers of diversity …

Though not much fossil evidence is available, studies indicate that extensive forest under tropical range existed in the tertiary period in parts of Bangladesh Even now, in a small land area, Bangladesh hosts four major types of forests: (a) Hill forests (mixed-evergreen forest), (b) Sal forest (deciduous forest), (c) Mangrove forest (natural mangrove), and …

Forest ecology is the study of all aspects of the ecology of wooded areas, including Rainforest, Deciduous and Evergreen, Temperate and Boreal forest. In this article,  Definition of Forest and Classification of Major Forests of the World will be discussed in detail. Definition of forest According to Forest Resources Assessment, …

Because of being an ‘agricultural country’, soil has always been a matter of concern in Bangladesh. Despite being a small country, soils of Bangladesh shows huge varieties. There are many recognized and unrecognized causes of such varieties. Normally, due to a diverse nature of physiographic condition, land type, parent materials …