Red Knots & Semipalmated Sandpipers

Laguna Superior

Country: Mexico

Region: Oaxaca,

Nearest city/town: Santa Maria Xadani

Site: Laguna Superior

Species/Sub-species: REKN-rufa

Total biogeographic population: 2,500

Count Method: Maximum day count

Count: 3001

% biogeographic pop. at site: 12.00

Season (primarily): Winter

Site recognition: IBA

Site description: Using the Ramsar Classification System for Wetland Type, the site's habitat characteristics are forest (gallery and riparian, mangroves, montane broadleaf evergreen, palm forest, pine, pine-oak, temperate deciduous, tropical deciduous, tropical lowland evergreen and tropical semi-deciduous), grassland (second-growth and grazed), savanna and wetland. Land ownership is “Zona Federa Marítimo Terrestre”, private and communal. Existing knowledge about the site has been gathered through past and planned shorebird research1.

Known threats: In terms of exploitation of renewable resources, commercial and subsistence fisheries are a threat to the site. In terms of land use change, agriculture and aquaculture (annual and perennial non-timber crops such as agro-industry farming) pose a high threat and energy production and mining (renewable energy such as wind farms) pose a very high threat. The threat of utility and service lines transportation and service corridors is moderate. The threat of human intrusions and disturbance (work and other activities), in terms of damaging recreational use, is very high. This threat information is based on the IBA monitoring assessment for Istmo de Tehuantepec-Mar Muerto.1

Notes: Two maps are available: (1) Laguna Superior and (2) Istmo de Tehuantepec-Mar Muerto. This latter follows the Mexican IBA boundaries. This site has the potential to become and WHSRN site.

Sources: 1Carmona, R., N. Arce, V. Ayala-Perez, A. Hernández-Alvarez, J.B. Buchanan, L.J. Salzer, P.S. Tomkovich, J.A. Johnson, R.E. Gill, Jr., B.J. McCaffery, J.E. Lyons, L.J. Niles,D. Newstead. 2013. Red Knot Calidris canutus roselaari migration connectivity, abundance and non-breeding distribution along the Pacific coast of the Americas. Wader Study Group Bulletin. 120 (3): 168–180. 2BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Istmo de Tehuantepec-Mar Muerto. Downloaded from on October 2, 2016