What changes occur in an aquatic ecosystem as a result of nutrient loading?
Direct and indirect ecological impacts of nutrient enrichment include increased primary productivity, increased phytoplankton biomass, reduction in water clarity, increased incidences of low oxygen events (hypoxia and anoxia), and changes in the trophic structure, trophic interactions, and trophodynamics of …
What types of organisms will be affected by a decrease supply of water in an ecosystem?
What types of organisms will be affected by a decreased supply of water in an ecosystem? Producers, consumers, and decomposers will be affected.
Which of the following would most likely happen to that predator’s prey species in the short term?
Which of the following would most likely happen to that predator's prey species in the short term? A. They will increase in numbers.
What will happen to an ecosystem that is experiencing a prolonged drought?
What will happen to an ecosystem that is experiencing a prolonged drought? The organisms in the ecosystem will either migrate or begin to die off as the available resources are no longer enough to support their numbers. The number of organisms in the ecosystem will adjust to the amount of water available.
What changes can occur in an aquatic ecosystem?
The changes will occur in an aquatic ecosystem as a result of nutrient loading are: changes in natural flow regimes as a result of water extraction and supply direct modification or destruction of important habitats barriers to the movement of plants and animals.
What does nutrient loading cause?
Excessive amounts of nutrients can lead to more serious problems such as low levels of oxygen dissolved in the water. Severe algal growth blocks light that is needed for plants, such as seagrasses, to grow.
Which of the following is not a freshwater ecosystem?
Wetlands are not considered freshwater ecosystems as there are some, such as salt marshes, that have high salt concentrations — these support different species of animals, such as shrimp, shellfish, and various grasses.
Which of the following factors in an ecosystem is biotic?
Biotic factors are living or once-living organisms in the ecosystem. These are obtained from the biosphere and are capable of reproduction. Examples of biotic factors are animals, birds, plants, fungi, and other similar organisms.
What will happen if there are more predators than prey in the ecosystem?
When prey is abundant, predator populations increase because more young are able to survive. More predators kill more prey, which, along with food scarcity, decreases the population.
What happens when prey population increases?
As the prey population increases, there is more food for predators. So, after a slight lag, the predator population increases as well. As the number of predators increases, more prey are captured. As a result, the prey population starts to decrease.
How does drought affect the aquatic ecosystems?
Drought conditions can negatively alter aquatic ecosystems, with immediate effects on fish and invertebrate species, such as fish kills in reservoirs. Altered flows: Drought conditions can greatly reduce stream flow, which impacts habitat quality and availability for freshwater organisms (Covich et al., 2006)
What are the 5 effects of drought?
Drought can also cause long-term public health problems, including: Shortages of drinking water and poor quality drinking water. Impacts on air quality, sanitation and hygiene, and food and nutrition. More disease, such as West Nile Virus carried by mosquitoes breeding in stagnant water.
Which of the following is not an aquatic ecosystem?
Monastery is not an aquatic ecosystem Monastery is correct because it is a building or combination of buildings e.g. domestic quarters and workplaces where monks, monastics and nuns live.
What are four main factors that affect aquatic ecosystems?
What are the four main factors that affect aquatic ecosystems? Water's depth, temperature amount of dissolved nutrients, and flow.
What does nutrient runoff do to aquatic systems?
Nutrients in waterways are essential for the growth of algae and aquatic plants but too much can destroy an ecosystem. Nutrients in streams are essential for the growth of algae and macrophytes (aquatic plants) that are an important food source for many small invertebrates and fish.
What are the 4 main types of freshwater ecosystems?
Freshwater Ecosystems Rivers, lakes, ponds and streams are the most common freshwater sources. Reservoirs, wetlands and groundwater sources are also considered freshwater ecosystems.
Which of the following is not a biotic component of an ecosystem?
The correct answer is Air. Abiotic factors refer to non-living physical and chemical elements in the ecosystem. Abiotic resources are usually obtained from the lithosphere, atmosphere, and hydrosphere.
Which of the following condition does not show abiotic factors in an ecosystem?
Answer and Explanation: The item in the question that is not an abiotic factor is the C. microbes in the soil. Since they are living things, they would be considered biotic…
Which outcomes would happen if all the predators of a prey population were removed from an actual habitat?
Without a top predator to regulate their numbers, these animals put a great deal of pressure on the existing vegetation that they require for food and can destroy large amounts of plant life, such as grasses and trees. This then causes further problems, such as soil erosion and loss of animal habitat.
How does predators affect the ecosystem?
Predators have profound effects throughout their ecosystems. Dispersing rich nutrients and seeds from foraging, they influence the structure of ecosystems. And, by controlling the distribution, abundance, and diversity of their prey, they regulate lower species in the food chain, an effect known as trophic cascades.
What happens to prey populations when predator populations are scarce?
When prey becomes more scarce, the predator population declines until prey is again more abundant. Therefore, the two balance each other. When the predators are removed, prey populations explode.
What are 3 types of prey defenses?
For instance, prey species have defense adaptations that help them escape predation. These defenses may be mechanical, chemical, physical, or behavioral.
How does drought and flooding affect aquatic habitats?
Flooding and drying out are natural features of freshwater ecosystems, but when these become more frequent and more intense, aquatic plants and animals are less able to recover. The amount and quality of water can be greatly affected and habitats for wildlife may become seriously degraded.
How do drought and floods affect aquatic life?
The water flows over the terrestrial land and affects the life. The drought will dry up the water body this will expose the aquatic animals to terrestrial animals and may kill them due to dryness. The flood also expose the aquatic animals to the terrestrial region which may be killed due to human intervention.
What are the result of drought?
Drought can also cause long-term public health problems, including: Shortages of drinking water and poor quality drinking water. Impacts on air quality, sanitation and hygiene, and food and nutrition. More disease, such as West Nile Virus carried by mosquitoes breeding in stagnant water.
What are 4 types of droughts?
Types of Drought
- Meteorological Drought. Sequence of drought occurrence and impacts for commonly accepted drought types. …
- Agricultural Drought. …
- Hydrological Drought. …
- Socioeconomic Drought. …
- Ecological Drought.
Which of the following is aquatic ecosystem?
Examples of aquatic ecosystem include oceans, lakes and rivers. An aquatic ecosystem includes freshwater habitats like lakes, ponds, rivers, oceans and streams, wetlands, swamp, etc. and marine habitats include oceans, intertidal zone, reefs, seabed and so on.
What is caused by excessive nutrient runoff into aquatic ecosystems?
This process is also known as eutrophication. Excessive amounts of nutrients can lead to more serious problems such as low levels of oxygen dissolved in the water. Severe algal growth blocks light that is needed for plants, such as seagrasses, to grow.
What is nutrient loading?
Definition: Quantity of nutrients entering an ecosystem in a given period of time.
Which one of the is not a component of freshwater ecosystem?
Thus, the correct answer is 'Grassland.