Abiotic Factors Affecting Organisms – revision notes

comfortable Light forte rotter be mensural twain physically measured for example with a LICOR light meter or a QSL (quantum scalar irradiance) meter. Luminous intensity can be measured subjectively measured with eg. a foot-candle meter, a type of photographic exposure meter. Intensity-watts rn-2 or einsteins m-2sec-1 Luminosity Units admit candles, lumens, footcandles and lux.Temperature Temperature is measured utilise a thermometer. Its alike a measure of how fast the atoms and molecules of a substance are moving. The units of measure are degrees on the Fahrenheit, Celsius, and Kelvin get overs. humidity Hygrometers may be designed for indoor or outdoor do (or both). Analog hygrometers use a moisture-sensitive material that is attached to a coil spring. The spring controls a chevy on an easy-to-read circular dial. Analog hygrometers are often part of a durable, tolerate-resistant art that as well includes a thermometer. Digital hygrometers chance the relative hum idity by using a sensor to monitor an galvanising current that is affected by moisture levels.Relative humidity, expressed as a percent. saltiness Salinity is often measured by measuring how well electricity travels through the piss. This property of water is called conductivity. wet that has dissolved salt in it bequeath conduct electricity better than water with no dissolved salt.Handheld Refractometer /Hydrometer / conduction Meter expressed in part per million(ppm)O2 compactness Pulse oximetry is a non-invasive order for monitoring a persons O2 saturation. Or shooter sensor used. pO2 carbon dioxide concentration commit a sensor connected to a PC via an arduino board. pCO2Wind Wind bucket along is now commonly measured with an anemometer but can besides be classified using the older Beaufort scale which is based on peoples observation of specifically definedwind effect. KnotFactor LightLight is important to both animals and plants as it is the briny source of livin g organisms energy on earth. It takes part in photosynthesis which provides energy to both animals and plants, undeniable for matureth, sweat and survival. Plants indispensableness to grow to be used as a food source for animals. Light is to a fault important for animals vision, without light we would not be able to see which would hamper movement and many senses. Humans also required sunlight for vitamin D. Light is also demand for warmth.Factor TemperatureTemperature is a major ascertain factor of global climate patterns. It affects the carriage cycles of plants and animals, influences weather and tides, and controls the freeze and thaw of the diametral ice caps. A small kind in average temperature can dumbfound powerful effects on the environment worldwide and can determine if a certain species has a suitable home ground for survival. Temperature also affects the rate of important reactions, it effects enzymes and many other chemicals and their efficiency.Factor-Humid ityHumidity drives some of the observable weather phenomena starting with clouds via fog, rainfall to storms and finally to such dramatic weather phenomena as hurricanes. It is not possible to prefigure the weather exactly without precise intimacy of humidity in all the layers of the atmosphere. Humidity affects chemical reactions, the environment of animals and plants.Factor SalinityOcean salinity plays key roles in the global hydrological cycle, ocean circulation and in regularisation Earths climate. Todays scientists know that Earths water cycle is henpecked by exchanges between the ocean and atmosphere, with sea surface salinity (SSS) varying because of fresh water input and output, via the processes of evaporation and precipitation.Factor O2 niggardliness plant cells need type O to live, because without oxygen they cant perform aerobic respiration to produce carbon dioxide (respiration is the process of breaking quite a little food to get energy). Similarly animals ne ed o2 to respire and live, breath and produce energy. O2 concentration also effects habitats as unlike species require different levels of o2.Factor CO2 Concentration Without CO2 the life of photosynthetic organisms and animals would be impossible, given that CO2 provides the nucleotide for the synthesis of organic compounds that provide nutrients for plants and animals. We also know CO2 is toxic to man therefore affects their health. However plants need co2 for energy.Factor-WindWind effects seed public exposure and aids the production of pollen needed for pollenation which is important because it leads to the production of fruits we can eat, and seeds that lead create more plants. Wind also effects the moisture surrounding admit cells and the gas and water exchange in plants and animals.