The world’s largest floating ecosystem is the neritic zone.
What is the basis for most of the biomass in all ecosystems?
ENERGY CROPS | Biomass Production
It is usually measured on a plant or unit of land basis. Total biomass of a plant is closely related to the capacity for carbon assimilation of the plant. About 90% of biomass is derived from the incorporation of carbon into organic compounds via photosynthesis.
Why are the most productive marine ecosystems found in cold temperate environments?
why are the most productive marine ecosystems found in cold, temperature regions? they have less overall sunlight, but receive far more nutrients.
Why are coastal ecosystems generally highly productive?
Coastal ecosystems are generally highly productive because they benefit from nutrients in runoff water and they’re shallow, providing ample light and shelter because plants can grow in many coastal ecosystems.
Where does most of the deep ocean get its nutrients?
The three main sources of energy and nutrients for deep sea communities are marine snow, whale falls, and chemosynthesis at hydrothermal vents and cold seeps.
Which ecosystem has highest biomass?
Answer: Forest ecosystem have the maximum biomass, because it includes organisms of all tropic levels as compared to pond, lake or grassland ecosystem.
What has the largest biomass?
However, in the ocean, the animal biomass is nearly 30 times larger than the plant biomass. Most ocean plant biomass is eaten by the ocean animals.
|individual count||1.3 billion|
|mean living mass of individual||400 kg|
|percent biomass (dried)||30%|
|global dry biomass in million tonnes||156|
Which marine ecosystem has the highest net primary productivity?
In the aquatic ecosystem, coral reefs show the highest gross primary productivity. Large numbers of aquatic phototrophs and phytoplankton contribute to the productivity of the ecosystem.
Which marine ecosystem is the most productive on earth?
Coral reefs are among the most productive ecosystems on the planet, with the primary producers at the base of the food chain (including corals) supporting their complex food webs.
What ecosystem has the highest net primary productivity?
The highest net primary productivity in terrestrial environments occurs in swamps and marshes and tropical rainforests; the lowest occurs in deserts.
Which ecosystem is the most taxonomically diverse?
Coral reefs are the most taxonomically diverse marine ecosystems and provide complex habitat for myriad sessile and mobile organisms (22, 23). Recent discoveries of numerous sibling species suggest diversity is even greater than already described (24).
Why is eutrophication one of the biggest threats of coral ecosystems?
One reason eutrophication is one of the biggest threats to coral ecosystems is that it provides nutrients that allow plankton growth, depriving coral of sunlight. Adaptations that allow halophytes to survive in salt water include: … Global warming; Sedimentation; Coral disease; Competitive algae.
Where and when do you find the most productivity in the Arctic?
Where and when do you find the most productivity in the Arctic? along the North Pacific and North Atlantic from April to August.
Why red algae is found in deepest water?
Red algae are able to grow in depth of seas as compared to green algae because of the presence of more quantity of pigment phycoerythrin in red algae growing at depth.
Which algae is found deepest in sea?
R – phycoerythrin is the only pigment to absorb ultraviolet and violet light. Due to phycoerythrin red algae are the deepest algae.
What is most of the oxygen in the ocean produced by?
At least half of Earth’s oxygen comes from the ocean.
Scientists estimate that 50-80% of the oxygen production on Earth comes from the ocean. The majority of this production is from oceanic plankton — drifting plants, algae, and some bacteria that can photosynthesize.