What is the ecosystem of the Hudson River?
The Hudson River estuary’s diverse habitats-the wetlands, the aquatic plant beds, the shoreline and the bottom of the river itself-are vitally important to the estuarine ecosystem and provide recreation, improved water quality and scenic amenities to humans.
What are abiotic factors in the Hudson River?
Abiotic factors in an aquatic environment like the Hudson River include the temperature of the water, how much oxygen it contains, how acid or basic it is (pH), how fast or slowly it moves, and how much sunlight penetrates the surface.
What are three biotic factors that scientists are monitoring in Hudson River to study the impact of zebra mussels?
Along the Hudson, the key biotic factors are phytoplankton, zooplankton, bacteria, crabs, fish, and, of course, the zebra mussels. These scientists are collecting samples of tiny zooplankton from the river using long, fine mesh nets.
Why is the Hudson River a dynamic ecosystem?
The Hudson River is a dynamic system that is host to thousands of organisms, big and small. Similar to land-based ecosystems, the organisms interact with each other in a variety of ways, largely, though not only, through predator and prey relationships.
Why do scientists continue to collect data about the ecology of the Hudson River?
For three decades, our scientists have been researching the Hudson River ecosystem from the way shoreline development impacts water quality to how invasive species influence resident plants and animals. … Long-term studies are essential to understanding how complex ecosystems operate.
What happened to different living things in the Hudson River ecosystem almost 20 years after the zebra mussel invasion?
The effects of the zebra mussel invasion on the Hudson River ecosystem seem to be diminishing, only 20 years after this invader appeared in the river. … Populations of native mussels, which were falling by 20 percent 60 percent each year, stabilized and even began to increase.
How two different factors can impact the amount of dissolved oxygen in the river answer?
Dissolved oxygen concentrations are constantly affected by diffusion and aeration, photosynthesis, respiration and decomposition. While water equilibrates toward 100% air saturation, dissolved oxygen levels will also fluctuate with temperature, salinity and pressure changes ³.
How can the Secchi depth affect the Hudson River?
Increased Secchi depth = increased water clarity = increased light penetration = more photosynthesis and growth by shallow water plants.
What physical and chemical factors do scientists test the river for?
What physical and chemical factors do scientists test the river for? (Answer: They measure temperature, dissolved oxygen, and turbidity.)
What is a benchmark in ecology why are they essential?
A benchmark in ecology is a reference point for all other studies. Benchmarks are essential because it gives you the ability to tell if something is above or below the expected level. Scientists may benchmark things such as water temperature and quality.
What is biotic and abiotic factor of environment?
Biotic and abiotic factors are what make up ecosystems. Biotic factors are living things within an ecosystem; such as plants, animals, and bacteria, while abiotic are non-living components; such as water, soil and atmosphere.
What unexpected change did scientists notice in the Hudson River in 2005?
In 2005, 14 years after the first sighting of zebra mussels in the Hudson River, Cary Institute scientists noticed an unexpected change in the river: zooplankton had returned to the same levels as before the invasion.
How did the zebra mussel get to the Hudson River?
Zebra mussels arrived in the U.S. hitching a ride in the bottom compartments of cargo ships traveling from Europe to the Great Lakes. Waterways connect the Hudson River to the Great Lakes, so the Cary Institute scientists knew it was just a matter of time before zebra mussels would show up in the Hudson River.
How did the introduction of the zebra mussel change 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.
Is Hudson River an estuary?
One of their names-Mahicantuck-means “great waters in constant motion” or, more loosely, “river that flows two ways.” It highlights the fact that this waterway is more than a river-it is a tidal estuary, an arm of the sea where salty sea water meets fresh water running off the land.