The Southern Cone Mesopotamian savanna is a flooded grassland ecoregion of Argentine Mesopotamia, spanning Corrientes and Misiones provinces (and bordering Entre Rios) west of the Uruguay River, with an extension into southern Paraguay. It forms a mosaic of seasonally wet habitats, including grasslands, marshes, woodland, and gallery forests, dominated by tall, dense grasses, especially Paspalum, dotted with isolated shrubs such as Acacia caven and Solanum glaucophyllum and herbaceous plants like Eryngium. Seasonal flooding is the defining ecological process here, with periodic inundation shaping the wetland-grassland landscape. The region supports a distinctive mammal community rich in xenarthrans, such as armadillos and the southern tamandua, and qualifies as an endemic bird area whose restricted-range seedeaters include the endangered marsh seedeater. It is also one of the least-protected ecoregions in its region, with very little of its area under formal conservation.
Marker placed inside the RESOLVE 2017 polygon at 28.6°S, 56.6°W.
Climate snapshot for this ecoregion
°C
°F
Current zone range (2011–2040)
11b-12b
Plotwright
CHELSA-derived typical winter month at this ecoregion's bbox grid.
Projected (2041–2070)
12a-12b
Plotwright
Where the CHELSA models say the typical winter month is heading.
Average warming this ecoregion is on track for: +3.5°F by mid-century. SSP3-7.0 (current trajectory) · CHELSA v2.1 bio06 sampled across 10 of 10 points within this ecoregion's bounding box.
At a glance
Dominant biome
Flooded Grasslands & Savannas
Realm
Neotropic
Approximate area
10,386 sq mi
Conservation tier
Nature Could Recover (Dinerstein NNH 3)
About the flooded grasslands & savannas biome
Grasslands and savannas subject to seasonal or year-round flooding, including large wetland complexes. Exceptionally productive, they concentrate waterbirds and aquatic life.
Catalog plants suited to this ecoregion
Computed from each plant's stated USDA zone range against this ecoregion's CHELSA-derived current zone range, with the CHELSA mid-century warming delta applied for the projection. Plants whose stated range falls outside both the current and projected zone end up dropped; the rest land in one of the three buckets below.
Climate-resilient picks · 4
These plants fit this ecoregion today AND remain in range under the mid-century SSP3-7.0 projection. Lead with these for a planting that holds up as the climate shifts.
These plants fit the ecoregion as it is today, but the mid-century projection moves them outside their stated zone range — plan for them to struggle by 2070.
No curated collection's plants all fit this ecoregion's zone range. We surface a collection only when every member would grow here — partial fits get filtered out rather than mislead. As the catalog and the curated set both grow, this section will fill in.
Related ecoregions
Other flooded grasslands & savannas ecoregions to explore: