What effect do you think a zebra mussel invasion might have on the Hudson River ecosystem?

Before the invasion, scientists had predicted the effects of the zebra mussels on the Hudson River. But they were still surprised by what happened. In the years right after the invasion, the number of phytoplankton fell by 80 percent. The number of zooplankton, which eat phytoplankton, fell by 50 percent.

What effect does zebra mussels have on the Hudson River?

Zebra mussels first appeared in the Hudson in May 1991. Since September 1992, zebra mussels have been dominant in the freshwater tidal Hudson, constituting more than half of heterotrophic biomass, and filtering a volume of water equal to all of the water in the estuary every 1-4 days during the summer.

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How do zebra mussels affect the ecosystem?

In spite of their small size (often no bigger than a penny) zebra mussels cause far-reaching damage to water structures and native ecosystems. … They also negatively impact aquatic ecosystems by harming native organisms. In huge numbers, they out-compete other filter feeders, starving them.

How do you think zebra mussels might affect the Hudson River ecosystem what data about the river might Scientists collect To investigate this question?

Based on the Hudson’s water chemistry, its river bottom, and other conditions, scientists predicted zebra mussels would thrive in the river. … Based on previous studies, scientists estimated how much plankton the zebra mussels could filter out of the water.

How has the invasion of zebra mussels in the Hudson River affected one biotic or abiotic factor in the ecosystem?

Dissolved oxygen levels decrease over time in the Hudson River. … Zebra mussels are causing a decline in phytoplankton populations, thus decreasing the amount of oxygen these phytoplankton produce via photosynthesis.

How do the effects of zebra mussels in the Hudson River relate to stability and change in ecosystems?

In the short-term the zebra mussels caused many factors in the Hudson River ecosystem to change, such as large decreases in the phytoplankton, zooplankton, and native mussel populations. Over the long- term some of the factors that changed seem to be getting more stable and recovering, like the zooplankton population.

What impact or changes do you think this invasion of zebra mussels will have on the native species living in the Hudson River ecosystem?

The zebra mussel invasion has had profound effects on the Hudson River ecosystem. The food web changes that the mussel has caused compare in magnitude to disturbances in other aquatic ecosystems caused by toxins, nutrient pollution, or acid rain.

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Why zebra mussels are invasive species?

Zebra mussels are one of the most devastating invasive species in North America. When they become established in an environment, they alter food webs and change water chemistry, harming native fish plants and other aquatic life. … These filter feeders outcompete other native species in infested rivers and lakes.

How do zebra mussels affect the economy?

Maintenance of pipes clogged with zebra mussels costs the power industry up to $60 million per year and temporary shutdowns due to insufficient water flow can cost over $5,000 per hour. The total cost to the United States of the zebra mussel invasion is estimated at $3.1 billion over the next ten years.

Where is the zebra mussel invading?

The first established population was discovered in 1988 at Lake St. Clair, which straddles the border between the U.S. and Canada and which connects to Lake Erie and Lake Huron. They quickly spread across the Great Lakes, and are now present in the Mississippi and St. Croix Rivers as far north as Stillwater.

How do zebra mussels affect biotic factors?

Zebra Mussels negatively impact the biotic factors in an ecosystem by: Attaching onto substrates (this process is known as “biofouling’), including native mussels and other organisms causing suffocation and stress. Consuming significant amounts of phytoplankton, causing its population to decrease.

What is one effect zebra mussels could have on the river’s ecosystem Readworks?

For example, zebra mussels can lower the amount of dissolved oxygen in the river through respiration, while plants can both increase the amount of dissolved oxygen in the river through photosynthesis and decrease it during respiration.

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Are zebra mussels really invading answer?

The zebra mussel is a highly invasive species that was accidentally introduced to the Great Lakes region of the United States in the 1980s.

What impact do zebra mussels have on the Great Lakes?

As they filter water through their bodies, zebra and quagga mussels consume plankton, tiny organisms that are the foundation of the Great Lakes food chain. That increases water clarity, which allows sunlight to penetrate deeper in the lake.

When the zebra mussel invasion occurred what happened to the phytoplankton population?

Zebra mussels have sustained high abundance since they invaded and caused changes in the abundance, distribution, biomass and productivity of many groups of organisms (Strayer 2009). For example, an 80–90% decline in the biomass of phytoplankton occurred soon after the invasion (Caraco et al. 2006).

Why do you think the zebra mussel population goes up and down over time?

H) Why do you think this happens? Zebra mussels eat phytoplankton so if the zebra mussel population is large, they’re going to eat the phytoplankton and the population will decrease.