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Alluvial Valley in Tennessee
Lauderdale County is bordered to the north by Dyer County, to the east
by Crockett and Haywood counties, to the south by Tipton County, and to the west
by Mississippi County, Arkansas. Within the county, the Mississippi River travels
46.7 river miles (river miles 820.0 - 773.3).
Physiographic Area: PIF 05 (Mississippi Alluvial Valley); BCR 26 (Mississippi Alluvial Valley)
Description: The MAV in Lauderdale County from the Dyer County line angles southwest up to around a 12-mile path that narrows to a tip at the Tipton County line at the mouth of the Hatchie River. Public wildlife lands within the MAV in Lauderdale County total around 51,495 acres--Chickasaw Wildlife Management Area (25,006), Cold Creek Refuge (2,018), John Tully Wildlife Management Area (12,493), Lauderdale Refuge (657), Lower Hatchie National Wildlife Refuge (9,451), and Sunk Lake State Natural Area (1,870). The Lauderdale Refuge lies within the East Gulf Coast Plain, but is included with the MAV because of its close proximity to it. There are no sizeable towns within the MAV in Lauderdale County. Ripley is the county seat.
Ornithological Importance: A significant portion of the MAV in Lauderdale County is under wildlife management. Included here are the federally and Tennessee endangered Least Tern with one major nesting colony--Nebraska Point Dikes (see Lauderdale County summary below and Least Tern Surveys in the Mississippi River for a state-wide summary); raptors including the In Need of Management in Tennessee Mississippi Kite; bottomland species among them the In Need of Management in Tennessee Cerulean Warbler; one of the largest blocks of bottomland hardwood forest in Tennessee; wading birds by the hundreds; shorebirds by the hundreds; waterfowl by the tens of thousands; and neotropical migrants and wintering species. Documentation is contained in Chickasaw NWR, Lauderdale Refuge, Lower Hatchie NWR, the Least Tern sites, and the notes below.
Tern Survey in Mississippi River
Notable numbers of species and individuals within the county, not associated with a described site include:
American White Pelican--July 4, 2004 (53).
Shorebird numbers--August 21, 2005 (18 species).
Black-necked Stilt--July 4, 2004 (52).
Halls: This site is included in the MAV though just outside of it in the East Gulf Coast Plain, as it is affected by it and is an important draw for species especially American Golden Plover and Lapland Longspur.
American Golden Plover--April 5, 2003 (1,500-2,000).
Lapland Longspur--January 1, 2004 (1,000).
Point Counts: Thirty-seven point counts were conducted in 1997, 40 in 1998, and 31 in 1999 and 2000. In 139 counts over 4 years, 2,951 birds of 59 species were observed. The table below summaries the top 20 species on point counts at the John Tully Wildlife Management Area by relative abundance of individuals in the period 1997-2000. Of the top 20 species, 10 species (50%) were neotropical.
20 Species On Counts at John Tully WMA|
By Relative Abundance of Individuals 1997-2000
|Great Blue Heron||72|
|* = neotropical|
|Lower Hatchie NWR|
|Nebraska Point Dikes - Miss. River|
Approved under the umbrella IBA site Mississippi Alluvial Valley: February 2006--Yes 7 No 0
This page was last updated on 02/18/06.