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Suaeda foliosa Moq. (Caryophyllales: Amaranthaceae) first record of the genus and species for Valparaíso Region, Chile
Revista Chilena de Historia Natural volume 88, Article number: 2 (2015)
The purpose of this paper is to present the finding of Suaeda foliosa in El Yali National Reserve, Chile. With this finding, the southern limit of the distribution is displaced from the current position at 31° S, 300 km southward.
In this work, we found this species on the banks of the Colejuda lagoon, 33° 45′ S, which belongs to a body of hypersaline seasonal water found inside the protected area distinguished as a Ramsar site (No. 878). The determination of the genus and species was achieved by comparing with herbarium material deposited in the National Herbarium SGO Natural History Museum in Santiago de Chile. Once we identified the species, the collected material was deposited in the referred Herbarium (SGO 163975). pH, salinity, and conductivity of the water column and soil adjacent the three protected lagoons are compared, discussing the unique conditions of the lagoon Colejuda that may explain the presence of S. foliosa only in their environment and not in other water bodies.
It can be concluded that El Yali wetland system harbors the S. foliosa southernmost population of the Americas.
The gender Suaeda Forssk. ex Scop. consists of roughly 110 species growing in saline, littoral, or Andean steppe environments throughout the world. Five different species are found in Chile, three of them are native and two are endemic (Teillier 1996; Zuloaga et al. 2009). The species described in Chile are as follows: Suaeda nesophila I.M. Johnst., they are endemic in two islands, San Félix and San Ambrosio. These islands belong to the Islas Desventuradas complex (Teillier 1996). Suaeda multiflora Phil. is endemic in the Atacama Region and has been officially declared vulnerable (Squeo et al. 2008; MINSEGPRES 2011). Suaeda argentinensis A. Soriano and Suaeda patagonica Speg. are both native in Chile and Argentina; they are located in Chile, cited in Tierra del Fuego (Moore 1983). Finally, Suaeda foliosa Moq. is native in Chile, Peru, and Bolivia (Muñoz-Schick et al. 2001).
In Bolivia, S. foliosa is an important native forage for livestock feed. It is the dominant element of the plant communities inhabiting the seasonal endemic peatlands of the Altiplano. It lives in the fluvial-lacustrine salt flats and beaches located at margins of salt lakes and flood plains of the rivers and dry semiarid highlands (Rocha-Olivio 2013).
In Peru and Chile, S. foliosa inhabits the coastal desert; it is part of the floristic cast of Lomas vegetation present in both countries (Muñoz-Schick et al. 2001; Dillon et al. 2011). In this context, S. foliosa finds its northern limit in Loma Mongon (9° 37′ S), located 352 km north of Lima (Peru), and its southern limit known so far is 31° S, in Coquimbo Region, Limarí Province, Ovalle County (Marticorena et al. 2001; Leiva-González et al. 2008; Zuloaga et al. 2009).
In this note, we present the finding of S. foliosa on the banks of the Colejuda lagoon (33° 45′ S to 71° 41′ W), located on the coast of the Santo Domingo County, San Antonio Province, Valparaíso Region (Figure 1). The Colejuda lagoon is one of the three bodies of water protected within El Yali National Reserve (EYNR), which is a Ramsar site of international significance (Fariña et al. 2012).
CHILE; Atacama Region; Bahía Inglesa; 01-XI-1991; M. Muñoz, S. Teillier, I. Meza 123949 (SGO). CHILE; Atacama Region; Road to Carrizal Bajo; 02-XI-1991; M. Muñoz, S. Teillier, I. Meza 123948 (SGO). CHILE; Atacama Region; km 556, Norte Llano Los Choros; 16-X-1992; M. Muñoz 131510 (SGO). CHILE; Coquimbo Region; Road located Eastward of Universidad Católica del Norte; 03-XI-1991; M. Muñoz, S. Teillier, I. Meza 123947 (SGO).
Between May and August 2014, samples of a particular species of plant were collected and photographed in the margins of Colejuda lagoon. Relevant taxonomic literature was used to ultimately determine that the sample belonged to the genus Suaeda. Subsequently, using an identification key to the recognized taxa of Suaeda occurring in Chile (Teillier 1996) and the SGO Herbarium at the National Museum of Natural History in Santiago de Chile, it was determined that the species collected corresponded to S. foliosa Moq., that belongs to the family Amaranthaceae. Once the species was identified, the collected material was deposited in the mentioned herbarium (SGO 163975).
S. foliosa as well as with Sarcocornia neei forms a ring of halophytic vegetation growing around the margins of Colejuda lagoon with a width ranging between 5 and 300 m (Figure 2). In the lagoon Matanza, isolated communities with few individuals were recorded. However, in the other lagoon, ‘Albufera’, a ring of halophytic vegetation described by Fariña et al. (2009) was observed, but it contains no S. foliosa. This situation may be explained by the large differences among the abiotic factors of the three lagoons (see Table 1). In fact, high values of conductivity and salinity in the water column at Colejuda lagoon seem to maintain mesosaline conditions throughout all seasons of the year. In addition, our results appear to be consistent with the analysis of soil conductivity, which almost triples the records on the banks of the other water bodies (Table 1).
The uniqueness of the Colejuda lagoon with respect to the other two bodies of water is reflected in the parameters shown in Table 1. It is known that the complexity of this ecosystem is an expression of the variability and heterogeneity of the environmental conditions, in particular the hydrochemistry (Vidal-Abarca et al. 2011). These conditions are favorable for the colonization of S. foliosa in Colejuda lagoon and also may explain the absence on the banks of the other nearby water bodies. This species thrives in soil with high levels of salt and metals (Rocha-Olivio 2013), as is the case of Colejuda lagoon.
The presence of S. foliosa in El Yali wetland system constitutes the first record of this species for the region of Valparaíso and allows extension of distributional ranges about 300 km south. Therefore, the EYNR becomes the phytogeographical point of reference for hosting the southernmost population of S. foliosa in South America.
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Fondo de Desarrollo Disciplinario de la Facultad de Ingeniería-UPLA, ParksCanada, MMA, CONAF, G. Rojas-Villegas, Herbario (SGO) enabled consultation to the collection Suaeda. C Mizobe, H. Gallardo, I. Velásquez, J. Meza, V. Meza, P. Huerta, E. Brito, P. Winckler, E. Quiroga, and M. Guevara are also acknowledged.
The authors declare that they have no competing interest.
MCL suggested vising the El Yali National Reserve. LFT found and identified the species, corroborated in the museum, and wrote the first manuscript. MCL enriched the discussion with pH data, conductivity, and salinity of water and soil. Both authors read and approved the final manuscript.
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Flores-Toro, L., Contreras-López, M. Suaeda foliosa Moq. (Caryophyllales: Amaranthaceae) first record of the genus and species for Valparaíso Region, Chile. Rev. Chil. de Hist. Nat. 88, 2 (2015). https://doi.org/10.1186/s40693-015-0035-5
- Coastal wetland
- Ramsar site
- Displacement of limit of the distribution