the coastal body is called brackish when fresh water from a river and saltwater from the sea meet.
the coastal body is called brackish when fresh water from a river and saltwater from the sea meet.
whats the coastal body called when fresh water from a river and saltwater from the sea meet?
brackish
the word "estuary" is derived from the latin word "aestuarium" meaning tidal inlet of the sea, which in itself is derived from the term "aestus", meaning tide. there have been many definitions proposed to describe an estuary. the most widely accepted definition is: "a semi-enclosed coastal body of water, which has a free connection with the open sea, and within which sea water is measurably diluted with freshwater derived from land drainage". however, this definition excludes a number of coastal water bodies such as coastal lagoons and brackish seas. a more comprehensive definition of an estuary is "a semi-enclosed body of water connected to the sea as far as the tidal limit or the salt intrusion limit and receiving freshwater runoff; however the freshwater inflow may not be perennial, the connection to the sea may be closed for part of the year and tidal influence may be negligible". this broad definition also includes fjords, lagoons, river mouths, and tidal creeks. an estuary is a dynamic ecosystem having a connection to the open sea through which the sea water enters with the rhythm of the tides. the sea water entering the estuary is diluted by the fresh water flowing from rivers and streams. the pattern of dilution varies between different estuaries and depends on the volume of fresh water, the tidal range, and the extent of evaporation of the water in the estuary.
estuary
coastal cutthroat trout use a large variety of habitat types, including lower and upper reaches of both large and small river systems, estuaries, sloughs, ponds, lakes, and near shore ocean waters. they spend more time in fresh water environments than other anadromous pacific salmonids. in fresh water they prefer deeper pool habitat and cover, such as that formed by woody debris. the semi-anadromous forms of coastal cutthroat trout do not overwinter in saltwater and rarely make extended migrations across large bodies of water. migrations in the marine environment are usually within of land. semi-anadromous coastal cutthroat typically spend two to five years rearing in fresh water before making their initial migration into saltwater. generally, semi-anadromous coastal cutthroat trout spend short periods offshore during summer months and return to estuaries and fresh water by fall or winter.
coastal cutthroat trout