How is compensation depth measured?

The compensation point, the depth where photosynthesis equals respiration can be estimated by multiplying the Secchi disk depth by about two.

What is the compensation depth for photosynthesis?

The Compensation depth is a physiological concept: The depth at which the rate of photosynthesis for an individual plant equals the rate of respiration by that plant.

What is compensation point in respiration?

compensation point The point reached in a plant when the rate of photosynthesis is equal to the rate of respiration. This means that the carbon dioxide released from respiration is equivalent to that which is taken up during photosynthesis. The compensation point is reached as light intensity increases.

What happens to zooplankton below compensation depth?

Eventually, if it stays below the compensation depth for more than a few days, it will consume its carbohydrate reserves and die. Because they are not autotrophic (they don’t make food by photosynthesis or chemosynthesis), zooplankton have no compensation depth.

What happens at the compensation depth?

The carbonate compensation depth, or CCD, is defined as the water depth at which the rate of supply of calcium carbonate from the surface is equal to the rate of dissolution. As long as the ocean floor lies above the CCD, carbonate particles will accumulate in bottom sediments, but below, there is no net accumulation.

What is compensation depth in geology?

Calcite compensation depth (CCD), in oceanography, the depth at which the rate of carbonate accumulation equals the rate of carbonate dissolution. Variation in input, productivity, and dissolution rates in the geologic past have caused the CCD to vary over 2,000 metres (about 6,600 feet).

What is light compensation depth?

The depth at which primary production equals respiration is called the compensation depth. The compensation depth coincides with the depth in the ocean where the light level is 0.1% to 1% of the amount of the sunlight entering the surface of the ocean. This also coincides with the bottom of the euphotic zone.

What does compensation point mean?

The compensation point refers to the situation when there is no net exchange of gas between plant or environment. In other words, photosynthetic uptake of carbon dioxide is exactly balanced by respiratory output of carbon dioxide. Thus, there is no net photosynthetic gain.

What is compensation point class 10 biology?

Answer: When the rate of photosynthesis is equal to rate of respiration, it is called as compensation point. The rate of liberation of O3 during photosynthesis is equal to the rate of liberation of CO2 during respiration. Thus, there is no net uptake of gases from the environment.

What is meant by compensation point in photosynthesis?

Compensation Point for Light (of photosynthetic plants) is the intensity of light at which the rate of carbon dioxide uptake (photosynthesis) is exactly balanced by the rate of carbon dioxide production (respiration) or equivalently, the light intensity at which the rate of oxygen production is exactly balanced by the …

What happens to compensation depth during a phytoplankton bloom?

Zooplankton start to increase as the phytoplankton bloom reaches its peak, attaining a maximum in the late spring or early summer. Because light irradiance decreases exponentially with increasing depth, there is a compensation depth below which respiration for a given phytoplankton cell exceeds photosynthetic output.

When does compensation depth of respiration exceed photosynthesis?

Compensation depth – Respiration exceeds photosynthesis within a cell at about 1% of incident surface light (the photic zone is the region from the surface to where 99% of light has disappeared). The rate that light attenuate in water will also influence the degree of heating within the water column by sunlight.

When does the rate of respiration equal the compensation point?

When the rate of photosynthesis equals the rate of respiration or photorespiration, the compensation point occurs. At the compensation point, the rate of photosynthesis is equal to the rate of respiration.

What happens to carbon dioxide at the compensation point?

In assimilation terms, at the compensation point, the net carbon dioxide assimilation is zero. Leaves release CO 2 by photorespiration and cellular respiration, but CO 2 is also converted into carbohydrate by photosynthesis.

How is the compensation depth and critical depth related?

The distance between compensation depth and critical depth depends upon the proportions of the phytoplankton stock above and below the compensation depth. This is determined mainly by vertical water movements.