JPMYERS 1974 Journal La Orqueta (11,8) to (2,3) Estancia Medaland 35 Km S of Juncalco by road Pto de Madariaga, Provincia de Bs. Aires, Argentina 13 September (cont'd) alter appreciably the amount of surface water now even contribute that much to the quality of habitat appropriate for white-rumps. Indeed, the La Orqueta mud-water system is at least now, as wet as it was 26 August. i.e. the rain appears to have done little more than replace that which had dried since then. Estancia La Driana tule stand of Solamum Estancia La Atlantida Arroyo Chico old Arroyo channel dredged La Orqueta flat semi-short grass Estancia Medaland cyclic up & low grassland low hummocky Farmhouse Monte Pampas Grass ... north taken today 0 0.5 1 2 3 Km from map of the Instituto Geografico Militar hoja 3757-29-2 1:50000 ↑ N The southern part Taille 8 of La Orqueta Marsh is a human-induced oxbow lake, created by the vestiges of the old Arroyo channel before the new one was dredged. The northern part is a dammed 'drainage ditch', which has been widened toward the southern end. The old channel today was soporific shorebird habitat - shallow water generally less than 1" with generable muddy substrate. If (lack) only quantities of shorebirds. It is bordered by Spartina and sawgrasses. The 4 fields traversed by the old Medaland road are reminiscent of those described 26 August with a diagram. Here the periodicity instead of the Distichlis (lowland) - short grass (upland) cycle is shorter and less regular. Close to Farmhouse Monte it deteriorates into small detailed 'dunish' hummocks with dried Solanum puddles, Spartina and other wettable things in the 2 depressions. Pijard armadillo digging are very evident and Gtenways can be heard frequently in the sandy