Density and abundance of Rhea pennata garleppi (Struthioniformes: Rheidae) in the Puna ecoregion of Argentina
BACKGROUND: Rhea pennata is classified internationally as a near-threatened species, with the subspecies R. p. garleppi being listed as endangered. FINDING: The aim of this study was to provide updated information on the density and abundance of R. p. garleppi in the southern Puna ecoregion of Argen...
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Sociedad de Biología de Chile
2014
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oai:scielo:S0716-078X20140001000162015-07-23Density and abundance of Rhea pennata garleppi (Struthioniformes: Rheidae) in the Puna ecoregion of ArgentinaMarinero,Nancy VerónicaCortez,Ricardo OmarNavarro,Joaquín LuisMartella,Mónica Beatriz Rhea pennata garleppi Puna Conservation Andean precordillera BACKGROUND: Rhea pennata is classified internationally as a near-threatened species, with the subspecies R. p. garleppi being listed as endangered. FINDING: The aim of this study was to provide updated information on the density and abundance of R. p. garleppi in the southern Puna ecoregion of Argentina. Density was estimated indirectly on the basis of monthly feces counts during 2011 and 2012, using line-transect surveys. Monthly abundance was calculated by multiplying the density of each month by the area of the reserve (400 km²). Population size range was calculated considering the average of the months with the highest abundance (and density) as the upper limit and the average of the months with the lowest abundance (and density) as the lower limit. The population size of this subspecies varied between 300 individuals (±60), with a density of 0.75 individuals/km² (±0.15) during the non-breeding season, and 188 individuals (±40), with a density of 0.47 individuals/km² (±0.10), during the reproductive season. CONCLUSION: This work shows the highest density record for R. p. garleppi so far and highlights changes in population size related to life history characteristics of rheas, as well as human factors that negatively affect the survival of wild populations.info:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.87 20142014-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2014000100016en10.1186/s40693-014-0017-z |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
Rhea pennata garleppi Puna Conservation Andean precordillera |
| spellingShingle |
Rhea pennata garleppi Puna Conservation Andean precordillera Marinero,Nancy Verónica Cortez,Ricardo Omar Navarro,Joaquín Luis Martella,Mónica Beatriz Density and abundance of Rhea pennata garleppi (Struthioniformes: Rheidae) in the Puna ecoregion of Argentina |
| description |
BACKGROUND: Rhea pennata is classified internationally as a near-threatened species, with the subspecies R. p. garleppi being listed as endangered. FINDING: The aim of this study was to provide updated information on the density and abundance of R. p. garleppi in the southern Puna ecoregion of Argentina. Density was estimated indirectly on the basis of monthly feces counts during 2011 and 2012, using line-transect surveys. Monthly abundance was calculated by multiplying the density of each month by the area of the reserve (400 km²). Population size range was calculated considering the average of the months with the highest abundance (and density) as the upper limit and the average of the months with the lowest abundance (and density) as the lower limit. The population size of this subspecies varied between 300 individuals (±60), with a density of 0.75 individuals/km² (±0.15) during the non-breeding season, and 188 individuals (±40), with a density of 0.47 individuals/km² (±0.10), during the reproductive season. CONCLUSION: This work shows the highest density record for R. p. garleppi so far and highlights changes in population size related to life history characteristics of rheas, as well as human factors that negatively affect the survival of wild populations. |
| author |
Marinero,Nancy Verónica Cortez,Ricardo Omar Navarro,Joaquín Luis Martella,Mónica Beatriz |
| author_facet |
Marinero,Nancy Verónica Cortez,Ricardo Omar Navarro,Joaquín Luis Martella,Mónica Beatriz |
| author_sort |
Marinero,Nancy Verónica |
| title |
Density and abundance of Rhea pennata garleppi (Struthioniformes: Rheidae) in the Puna ecoregion of Argentina |
| title_short |
Density and abundance of Rhea pennata garleppi (Struthioniformes: Rheidae) in the Puna ecoregion of Argentina |
| title_full |
Density and abundance of Rhea pennata garleppi (Struthioniformes: Rheidae) in the Puna ecoregion of Argentina |
| title_fullStr |
Density and abundance of Rhea pennata garleppi (Struthioniformes: Rheidae) in the Puna ecoregion of Argentina |
| title_full_unstemmed |
Density and abundance of Rhea pennata garleppi (Struthioniformes: Rheidae) in the Puna ecoregion of Argentina |
| title_sort |
density and abundance of rhea pennata garleppi (struthioniformes: rheidae) in the puna ecoregion of argentina |
| publisher |
Sociedad de Biología de Chile |
| publishDate |
2014 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2014000100016 |
| work_keys_str_mv |
AT marineronancyveronica densityandabundanceofrheapennatagarleppistruthioniformesrheidaeinthepunaecoregionofargentina AT cortezricardoomar densityandabundanceofrheapennatagarleppistruthioniformesrheidaeinthepunaecoregionofargentina AT navarrojoaquinluis densityandabundanceofrheapennatagarleppistruthioniformesrheidaeinthepunaecoregionofargentina AT martellamonicabeatriz densityandabundanceofrheapennatagarleppistruthioniformesrheidaeinthepunaecoregionofargentina |
| _version_ |
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