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What best describes the change in salinity in an estuary at low tide?
Salinity falls as the out flowing tide brings in more fresh river water.
What is the average salinity in an estuary?
Questioning 'what is the average salinity in an estuary?' is the wrong question! An estuary is formed where a river meets the sea, the sea would be typically around 35,000 mg/L (total dissolved salts) and the river may be very fresh, say 100 mg/L or possibly brackish if it has picked up salt along the way. That may depend on the river flow rate and salt accessions within the river basin. The salinity of the estuary will range from sea salinity to fresh along the length of the estuary depending upon tidal interchange and river flow rates. A more important question, particularly for the ecology, is what is the transient range at any point and how might this vary depending upon seasons and drought cycles. This will affect the range of ecologic systems (flora and fauna) that can thrive or survive. Some systems need only fresh water others need only salt water, however the estuary offers the opportunity for fish and other species which enjoy different salinity at different parts of their life cycle.
What causes the amount of salt in the water of an esturay to change?
The amount of salt in the water of an estuary can change due to various factors. One major factor is the mixing of freshwater from rivers with saltwater from the ocean, which can dilute or increase the salt concentration. Seasonal variations in rainfall and temperature can also affect the amount of salt in the water. Additionally, human activities such as agriculture, industry, and pollution can introduce or remove salt from the estuary, causing changes in its salinity.
What man-made or natural event can decrease the salinity of the estuary area?
Global warming,desalination... :)
How do you protect an estuary?
Clean up pollution, insure that the salinity is not disrupted unnaturally, and prohibit overfishing.
What is salinity and how does salinity change with depth?
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Would salinity increase or decrease in an estuary during spring floods?
When the river brings in extra water, such as during periods of flooding, the salinity, or the amount of salt, in the water of the bay will be reduced.
Marine organisms that are well adapted to drastic changes in salinity would most likely be found in which environment?
That would be Estuary.
How would salinity change if some ocean water evaporated?
Salinity is increased.
How salty are estuaries?
Salinity varies within the estuary and depend on other factors such as tides. Estuaries are essentially where freshwater from rivers, streams, etc, meet with saltwater from the ocean. The range of salinity within an estuary is typically between 0-25ppt, and that is between where the mouth of the river ends on to where the ocean begins. PPT stand for parts per thousand, just in case you did not know.
How does salinity change in warm climates where water evaporates quickly?
Salinity is increased during time.
How does salinity change the properties of water?
Salinity causes the water to forget it's properties and relatives.
