Premium Essay

Jgrd

In: English and Literature

Submitted By toad321
Words 295
Pages 2
Estuary

Abiotic Factors

Physical Environment: An estuary is rarely deep, never exceeding more than 100ft. Because estuaries do not occur in any particular latitude temperature, precipitation, and sunlight varies greatly. Water flows from inland to the ocean.

Chemical Environment: Estuaries contain brackish water, which is a mix of fresh and salt water. The salinity is never more than in normal ocean water, and decreases the further inland you go. Compounds that reach the ocean by runoff are present in estuaries.

Geologic Features: An estuary is semi-enclosed, with the ocean at one end and a river on the other.

Estuaries are not affected by the seasons.

Biotic Factors

Producers include, algae, phytoplankton, spike grass, cordgrass, sea grass, purple loosestrife, sea lavender, and other aquatic plants.

Consumers include many different birds, fish, crustaceans, bivalves, and microscopic organisms.

Estuaries are very vulnerable to runoff from nearby farms. Many estuaries have experienced great human impact from the widening of the mouth, where the estuary meets the sea, to allow ships to pass through. This causes erosion and higher salinity within the ecosystem.

Invasive species include purple loosestrife, which suppresses native species, and Asian clams, which cover the riverbed and clog pipes.

Policy

The Estuary Protection Act highlighted the values of estuaries and the need to conserve their natural resources. It authorized the Secretary of the Interior, in cooperation with other Federal agencies and the States, to study and inventory estuaries of the United States, including land and water of the Great Lakes, and to determine whether the Federal Government for protection should acquire such areas.

Restore America's Estuaries is a national nonprofit organization established in 1995 as an alliance of eleven

Similar Documents

Premium Essay

Media Research Methods

...Dave Madsen JGRD 915: Mass Communication Theory Dr. Linda Shipley Final Paper Dec. 14, 2009 Discovering Methods of Communication Use in Ord, Nebraska In a recent editorial opinion column in the Sioux City (Iowa) Journal, Editor Mitch Pugh wrote “We are becoming a nation that only wants to consume news that perpetuates or supports our own tightly held beliefs. I’m not sure I quite understand how that line of thinking contributes anything to a society that used to value open and fair-minded debate and learned from absorbing diverse viewpoints.” (Pugh) If you actually asked people about their news consumption practices, would they agree with that sentiment? Would the residents of a particular small town in Nebraska be able to determine if any commonly held beliefs might be determined by the selection of a specific type or style of media? These are just some of the questions that arise when evaluating the results of just such a research project. During the month of October, 2009, students of Dr. Linda Shipley’s Mass Communication Theory class at the University of Nebraska-Lincoln, conducted interviews with 33 residents of the small town of Ord, Nebraska. The purposes of the survey were: 1) To measure the use of media by the people of Ord. Specifically, how do they gather information about Ord and how do they disseminate information about Ord? 2) To measure their opinions about living in Ord. The interviews were conducted by telephone, with each of the eleven...

Words: 3856 - Pages: 16

Free Essay

Test2

...62118 0/nm 1/n1 2/nm 3/nm 4/nm 5/nm 6/nm 7/nm 8/nm 9/nm 1990s 0th/pt 1st/p 1th/tc 2nd/p 2th/tc 3rd/p 3th/tc 4th/pt 5th/pt 6th/pt 7th/pt 8th/pt 9th/pt 0s/pt a A AA AAA Aachen/M aardvark/SM Aaren/M Aarhus/M Aarika/M Aaron/M AB aback abacus/SM abaft Abagael/M Abagail/M abalone/SM abandoner/M abandon/LGDRS abandonment/SM abase/LGDSR abasement/S abaser/M abashed/UY abashment/MS abash/SDLG abate/DSRLG abated/U abatement/MS abater/M abattoir/SM Abba/M Abbe/M abbé/S abbess/SM Abbey/M abbey/MS Abbie/M Abbi/M Abbot/M abbot/MS Abbott/M abbr abbrev abbreviated/UA abbreviates/A abbreviate/XDSNG abbreviating/A abbreviation/M Abbye/M Abby/M ABC/M Abdel/M abdicate/NGDSX abdication/M abdomen/SM abdominal/YS abduct/DGS abduction/SM abductor/SM Abdul/M ab/DY abeam Abelard/M Abel/M Abelson/M Abe/M Aberdeen/M Abernathy/M aberrant/YS aberrational aberration/SM abet/S abetted abetting abettor/SM Abeu/M abeyance/MS abeyant Abey/M abhorred abhorrence/MS abhorrent/Y abhorrer/M abhorring abhor/S abidance/MS abide/JGSR abider/M abiding/Y Abidjan/M Abie/M Abigael/M Abigail/M Abigale/M Abilene/M ability/IMES abjection/MS abjectness/SM abject/SGPDY abjuration/SM abjuratory abjurer/M abjure/ZGSRD ablate/VGNSDX ablation/M ablative/SY ablaze abler/E ables/E ablest able/U abloom ablution/MS Ab/M ABM/S abnegate/NGSDX abnegation/M Abner/M abnormality/SM abnormal/SY aboard ...

Words: 113589 - Pages: 455