<HTML> <HEAD> <META NAME="GENERATOR" CONTENT="Adobe PageMill 3.0 Mac"> <TITLE>Louisiana subregions</TITLE> </HEAD> <BODY BGCOLOR="#ffefb3"> <P ALIGN=CENTER><B><FONT SIZE="+1" FACE="Arial">Louisiana subregions</FONT></B></P> <P>&nbsp;</P> <P><FONT FACE="Arial">In our Louisiana bird book draft, we use the terms below with respect to Louisiana geography. These are arbitrary boundaries that are in many ways unsatisfactory, as in any attempt to inflict typological categories on a continuum.</FONT></P> <P><FONT FACE="Arial">o <B>Northern Interior</B> = north of 31o 30' (but also south of that latitude to include southern extremes of <I>Sabine</I>, <I>Natchitoches</I>, <I>Grant</I>, <I>LaSalle</I>, <I>Catahoula</I>, and <I>Concordia</I>). This line corresponds roughly to the boundary between USDA Plant Hardiness Zones 8a and 8b. When divided into &quot;western&quot; and &quot;eastern&quot; sections, the boundary is arbitrarily placed at the eastern boundaries of <I>Union</I> (e.g., Ouachita R.), <I>Jackson</I>, <I>Winn</I>, and <I>Grant</I> parishes, and thus the western boundaries of <I>Morehouse</I>, <I>Ouachita</I>, <I>Caldwell</I>, and <I>LaSalle</I> parishes.<BR> <BR> o <B>Southern Interior</B> = between the Northern Interior and Coastal Zone<I>. </I>When divided into &quot;western&quot; and &quot;eastern&quot; sections, the boundary is arbitrarily placed at the eastern boundaries of <I>Rapides</I>, <I>Evangeline</I>, <I>St. Landry</I>, and <I>St. Martin</I> parishes, and thus the western boundaries of <I>Avoyelles</I>, <I>Pte. Coupee</I>, <I>Iberville</I>, and <I>Assumption</I> parishes; thus the Atchafalaya River roughly corresponds to the boundary.<BR> <BR> o <B>Coastal Zone</B> = from the coastline and southern shore of Lake Pontchartrain to about 25 miles inland; also coastal islands, including the Chandeleur chain. [Thus, examples of towns considered within the Coastal zone are Hackberry, Abbeville, New Iberia, Franklin, Morgan City, New Orleans, LaPlace, Reserve, and Slidell; and towns just north of the Coastal Zone are Holmwood, Lake Arthur, Gueydan, Kaplan, St. Martinville, Thibodaux, Donaldsonville, and Mandeville. For convenience, we use the political boundaries of the following coastal tier parishes to delimit the Coastal Zone even if they include some area beyond the 25 mile limit: <I>Cameron, Iberia, St. Mary, Terrebonne, Lafourche, Jefferson, Plaquemines, St. Bernard, Orleans, St. Charles, St. John the Baptist</I>, and <I>St. James</I>. This leaves <I>Vermilion</I> and <I>St. Tammany</I> as the only two parishes split between Coastal and Southern Interior. When divided into &quot;western&quot; and &quot;eastern&quot; sections, the boundary is arbitrarily placed at the <I>Iberia</I>/<I>St. Mary </I>boundary<I>.<BR> <BR> </I>o <B>Offshore</B> = Gulf of Mexico, more than 1 mile from the beach.</FONT></P> <P><B><FONT FACE="Arial">Parish synopsis:</FONT></B></P> <P><B><FONT FACE="Arial">Nothern Interior (western) = </FONT></B><FONT FACE="Arial">(<I>Caddo</I>, <I>Bossier</I>, <I>Claiborne</I>, <I>Lincoln</I>, <I>Union</I>, <I>Webster</I>, <I>Jackson</I>, <I>De Soto</I>, <I>Red River</I>, <I>Bienville</I>, <I>Natchitoches</I>, <I>Sabine</I>, <I>Winn</I>, and <I>Grant</I>).<BR> <B>Nothern Interior (eastern)</B> = (<I>Morehouse</I>, <I>W. Carroll</I>, <I>E. Carroll</I>, <I>Ouachita</I>, <I>Richland</I>, <I>Madison</I>, <I>Caldwell</I>, <I>Franklin</I>, <I>Tensas</I>, <I>LaSalle</I>, <I>Catahoula</I>, and <I>Concordia</I>).<BR> <B>Southern Interior (western)</B> = (<I>Vernon</I>, <I>Rapides</I>, <I>Beauregard</I>, <I>Allen</I>, <I>Evangeline</I>, <I>St. Landry</I>, <I>Calcasieu</I>, <I>Jefferson</I> <I>Davis</I>, <I>Acadia</I>, <I>Lafayette</I>, <I>St. Martin</I>, and <I>n. Vermilion</I>).<BR> <B>Southern Interior (eastern)</B> = (<I>Avoyelles</I>, <I>Pointe Coupee</I>, <I>W. Feliciana</I>, <I>E. Feliciana</I>, <I>Iberville</I>, <I>W. Baton Rouge</I>, <I>E. Baton Rouge</I>, <I>St. Helena</I>, <I>Tangipahoa</I>, <I>Washington</I>, <I>Livingston</I>, <I>Ascension</I>, <I>Assumption</I>, and most of <I>St. Tammany</I>).<BR> <B>Coastal Zone (western)</B> = (<I>Cameron</I>, <I>s. Vermilion</I>, and <I>Iberia</I>).<BR> <B>Coastal Zone (eastern)</B> = (<I>St. Mary</I>, <I>Terrebonne</I>, <I>Lafourche</I>, <I>Jefferson</I>, <I>Plaquemines</I>, <I>St. Bernard</I>, <I>St. James</I>, <I>St. John</I>, <I>St. Charles</I>, <I>Orleans</I>, and extreme se. <I>St. Tammany</I>).</FONT> </BODY> </HTML>