What is Bioaerosol? Types of bioaerosols 1. Fungi 2. Bacteria 3. Viruses 4. Pollen Collection Methods of Bioaerosol/Deposition of Bioaerosol Bioaerosols are primarily collected via collection plates, electrostatic collectors, mass spectrometers, and impactors. Other experimental approaches are also utilised. In comparison to other PC filter alternatives, Polycarbonate (PC) filters have produced the most accurate bacterial … Read more
Biological oxygen demand refers to the amount of oxygen required by bacteria and other microorganisms to decompose organic matter under aerobic (oxygen present) conditions at a certain temperature (BOD). The greater the concentration of organic contaminants in the water, the greater the oxygen demand of the bacteria. Consequently, the level of contamination in a body … Read more
What is climax community? Climax community means Characteristics of a climax community Nature of Climax Community 1. Poly-climax and Mono-climax 2. Pattern theory of Climax Factors Affecting the Nature of Climax Community Transient and cyclic climax Theories of the Climax Community There are several ideas about what happens at the end: 1. Mono-climax Theory 2. … Read more
What is Consumer? Consumer is a category that belongs inside an ecosystem’s food chain. It primarily refers to animals. Consumers cannot generate their own energy and must rely on the intake and digestion of producers, other consumers, or both in order to survive. Types of consumer 1. Primary consumers Examples of Primary consumers 2. Secondary … Read more
Learn the Y-shaped energy flow model with a labelled diagram, grazing and detritus pathways, examples, advantages, limitations and comparisons.
What is Energy Flow in an Ecosystem? Energy flow models are used to show how energy passes through different trophic levels of an ecosystem. It shows the input of energy, transfer of energy and loss of energy in each level. Energy always move in one direction. It is not recycled like nutrients. The single channel … Read more
A Desert Ecosystem is a system in which living things (plants, animals, microbes) interact with non-living parts (soil, air, water, temperature) in a region that is extremely dry. It is defined by very low rainfall (often less than about 250 mm per year), and scarcity of moisture is a crucial limiting factor. The system is … Read more
Biodiversity hotspots are regions packed with an extraordinary variety of plant and animal life found nowhere else on Earth—but they’re also in serious trouble. To qualify as a hotspot, an area must have at least 1,500 unique plant species and have already lost over 70% of its original natural habitat due to human activities like … Read more
What is Rhizosphere? The rhizosphere is the small area of soil around plant roots that is directly affected by root secretions and the microbes that live there. Usually goes about one millimeter from the root surface and includes soil that sticks to the roots and can be easily shook off. Root exudates and rhizodeposition: Roots … Read more
What is Global Warming? Definition of Global Warming Global warming is the long-term increase in Earth’s average surface temperature, primarily caused by the buildup of greenhouse gases like carbon dioxide and methane due to human activities such as burning fossil fuels and deforestation. This leads to climate changes and various environmental impacts. Causes of Global … Read more
