How does climate change affect primary production? This question is raised by those who are interested in the environment and observers of climate factors. What is the meaning of primary productivity and is it affected by climatic factors? This is what we will discuss below.
How does climate change affect primary production?
Climate change may severely affect the regional seas because they combine different climatic conditions from mixing, geography, and exposure to the open ocean, making them for many physical processes.
But what matters is primary production as well as the climatic effects on both: long changes in primary budgets, seasonal processes that control plants’ exposure to light, and response to heat directly. So how does temperature affect primary productivity?
How does temperature affect primary productivity?
The relationship between temperature and metabolic processes including primary productivity and respiration is a direct relationship when the temperature is at optimum temperatures. It increases with increasing temperature, this is called the Q10 effect, meaning that the rate of change in processes is 10 degrees Celsius. When the temperature exceeds this limit, the respiratory rate increases, and thus the NPP decreases.
While the primary productivity per unit volume of water was not affected by the increase in temperature due to the negative effect of temperature on the biomass of phytoplankton.
net primary productivity and climate change
Before we explain the relationship between climate change and net primary productivity, we must clarify what is meant
What is NPP?
NPP is short for Net primary productivity and is defined as the net benefit of organic matter from vegetation as a result of photosynthesis. Thus, it is not only an indicator of vegetation productivity but rather a reflection of the carbon-fixing capacity of ecosystems.
More precisely, NPP is defined in the Encyclopedia of Biological Diversity as the difference between the energy installed by autotrophs and their respiration, most commonly equated with increases in biomass per unit of land surface and time.
Net primary productivity varies across ecosystems and is influenced by several factors including solar energy inputs, temperature and humidity levels, carbon dioxide levels, nutrient availability, and community interactions such as grazing.
Having explained how climate change affects primary production
Is NPP affected by climate factors?
explain how climate change will influence the NPP of the agroforestry ecosystem
As mentioned, temperature change affects productivity positively when the temperature is in the optimum range. While the respiratory rate increases when the temperature exceeds this limit, the NPP decreases.
How does precipitation affect net primary productivity?
One study showed a decrease in NPP when precipitation exceeds 380 to 420 mm. Perhaps the reason is lower solar radiation and lower temperature liter associated with precipitation. Here the question arises: how do temperature precipitation and longitude affect net primary productivity?
How do temperature precipitation and longitude affect net primary productivity?
Temperature and precipitation interact to influence net primary productivity by increasing both annual temperature and precipitation. This results from the interception of the annual solar radiation at the site resulting in an increase in the daily temperature and during the growth period.
Studies also confirmed that experimental warming and increased precipitation increased plant growth and ecosystem C flux while decreasing rainfall adversely affected it. Warming has stimulated total NPP significantly, increasing photosynthesis and respiration of the ecosystem.
When analyzing the relationship between NPP and climatic changes, it was found that precipitation dominated the NPP in 72% of the land area. While temperature and solar radiation influence the NPP in the Himalayas and forests.
In short, the answer is determined by the question: how does climate change affect primary production? With two main factors are temperature and precipitation.