Table of Contents
- 1 What limits productivity in polar region?
- 2 What limits primary production in polar regions during the winter?
- 3 What factors influence a regions photosynthetic productivity?
- 4 What factors limit primary productivity?
- 5 What is the primary productivity of the polar ocean?
- 6 What limits primary productivity in tropical oceans?
- 7 During which season does primary productivity reach its peak in polar oceans?
- 8 Why is productivity low in tropical regions?
What limits productivity in polar region?
Density and temperature change very little with depth in polar regions. Availability of solar energy is what limits photosynthesis productivity in polar oceans. Productivity is low and limited because of lack of nutrients.
What limits primary production in polar regions during the winter?
Arctic Ocean primary productivity is limited by light and inorganic nutrients. With sea ice cover declining in recent decades, nitrate limitation has been speculated to become more prominent.
What are the limiting factors for productivity in the ocean?
In the vast unproductive low- and mid-latitude ocean, warm and sunlit surface water is separated from cold, nutrient-rich interior water by a strong density difference that restricts mixing of water and thereby reduces nutrient supply, which becomes the limiting factor for productivity.
What factors influence a regions photosynthetic productivity?
Two factors influence a region’s photosynthetic productivity: the availability of nutrients and the amount of solar radiation, or sunlight.
What factors limit primary productivity?
Production varies among ecosystems, as well as over time within ecosystems. Rates of production are determined by such factors as climate and nutrient supply. Precipitation is the dominant control worldwide, but nutrient availability often limits primary production in any particular, local system.
Why are polar waters so productive during the summer season?
In the polar oceans, phytoplankton blooms (explosive population growth) occur during the summer months as a result of favorable light conditions which lead to short-term increased primary productivity. During these months, the Antarctic Ocean’s upwelling zone exhibits some of the Earth’s highest primary productivity.
What is the primary productivity of the polar ocean?
Primary production
| Region | Trend, 2003-19 (g C/m2/yr/decade) | 2019 Primary Productivity (% of the 2003-18 average) |
|---|---|---|
| Amerasian Arctic | 2.10 | 115.8 |
| Sea of Okhotsk | 1.82 | 100.6 |
| Bering Sea | 2.06 | 100.1 |
| Barents Sea | 10.62 | 99.5 |
What limits primary productivity in tropical oceans?
Primary productivity in tropical oceans is limited by the amount of nutrients available.
What are 3 limiting factors in an aquatic ecosystem?
Most aquatic organisms do not have to deal with extremes of temperature or moisture. Instead, their main limiting factors are the availability of sunlight and the concentration of dissolved oxygen and nutrients in the water.
During which season does primary productivity reach its peak in polar oceans?
In particular, the melting and retreat of sea ice during spring are strong drivers of primary production in the Arctic Ocean and its adjacent shelf seas due to enhanced light availability (Barber et al.
Why is productivity low in tropical regions?
The overall pattern with latitude is clearly visible: low productivity in the tropics and subtropics, probably due to nutrient limitation brought about by strong, year-round thermocline and pycnocline.
What factors control photosynthetic productivity in a temperate grassland ecosystem?
This is called photosynthetic productivity (or primary productivity) and is directly influenced by what producers rely on: sunlight and nutrients.