Rarity patterns and conservation priorities in Cactaceae species from the Southern Central Andes: a case study from the Calchaquíes Valleys, Salta, Argentina
In this study, 34 Cactaceae species from the Calchaquíes Valleys, Argentina, were studied to determine 1) species rarity level, 2) proportion of rare species among taxonomic and ecological groups and, 3) whether rareness is consistently distributed throughout the species geographical ranges. We used a model where rarity is defined by the geographic range and the local population size to define species rarity. Rareness was not concentrated in any particular taxonomic or ecological group of Cactaceae; however 28 species were rare at some level. In most species, rarity varied across the geographical range, only five species remained consistently rare in all the surveyed populations. Six species qualified as extremely rare, all from the Cactoideae subfamily, four endemic to the southernmost Central Andes and differing in their growth forms. Only two of the 34 studied species, appeared as both extremely and consistently rare across its distribution. Determining rarity levels is useful for identifying species that may be in danger and/or in need for further studies. Rarity, used as an indicator of species vulnerability, allowed us, to identify Cactaceae species that are more vulnerable to anthropogenic or natural disturbance, compared with common species. Many of the Cactaceae species identified here as rare were mentioned by IUCN at intermediate categories of extinction. Our approach seems then to yield useful results and rareness in the present context appears to be related with vulnerability to extinction within the southernmost Central Andes.
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Asociación Argentina de Ecología
2016
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Godoy-Bürki, Ana C. Aagesen, Lone Sajama, Jesus M. Bravo, Silvia A. Alonso-Pedano, Mariana Ortega-Baes, Pablo |
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Godoy-Bürki, Ana C. Aagesen, Lone Sajama, Jesus M. Bravo, Silvia A. Alonso-Pedano, Mariana Ortega-Baes, Pablo Rarity patterns and conservation priorities in Cactaceae species from the Southern Central Andes: a case study from the Calchaquíes Valleys, Salta, Argentina |
| author_facet |
Godoy-Bürki, Ana C. Aagesen, Lone Sajama, Jesus M. Bravo, Silvia A. Alonso-Pedano, Mariana Ortega-Baes, Pablo |
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Godoy-Bürki, Ana C. |
| title |
Rarity patterns and conservation priorities in Cactaceae species from the Southern Central Andes: a case study from the Calchaquíes Valleys, Salta, Argentina |
| title_short |
Rarity patterns and conservation priorities in Cactaceae species from the Southern Central Andes: a case study from the Calchaquíes Valleys, Salta, Argentina |
| title_full |
Rarity patterns and conservation priorities in Cactaceae species from the Southern Central Andes: a case study from the Calchaquíes Valleys, Salta, Argentina |
| title_fullStr |
Rarity patterns and conservation priorities in Cactaceae species from the Southern Central Andes: a case study from the Calchaquíes Valleys, Salta, Argentina |
| title_full_unstemmed |
Rarity patterns and conservation priorities in Cactaceae species from the Southern Central Andes: a case study from the Calchaquíes Valleys, Salta, Argentina |
| title_sort |
rarity patterns and conservation priorities in cactaceae species from the southern central andes: a case study from the calchaquíes valleys, salta, argentina |
| description |
In this study, 34 Cactaceae species from the Calchaquíes Valleys, Argentina, were studied to determine 1) species rarity level, 2) proportion of rare species among taxonomic and ecological groups and, 3) whether rareness is consistently distributed throughout the species geographical ranges. We used a model where rarity is defined by the geographic range and the local population size to define species rarity. Rareness was not concentrated in any particular taxonomic or ecological group of Cactaceae; however 28 species were rare at some level. In most species, rarity varied across the geographical range, only five species remained consistently rare in all the surveyed populations. Six species qualified as extremely rare, all from the Cactoideae subfamily, four endemic to the southernmost Central Andes and differing in their growth forms. Only two of the 34 studied species, appeared as both extremely and consistently rare across its distribution. Determining rarity levels is useful for identifying species that may be in danger and/or in need for further studies. Rarity, used as an indicator of species vulnerability, allowed us, to identify Cactaceae species that are more vulnerable to anthropogenic or natural disturbance, compared with common species. Many of the Cactaceae species identified here as rare were mentioned by IUCN at intermediate categories of extinction. Our approach seems then to yield useful results and rareness in the present context appears to be related with vulnerability to extinction within the southernmost Central Andes. |
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Asociación Argentina de Ecología |
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2016 |
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https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/106 |
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rev-ecoaus-article-1062023-11-02T22:56:13Z Rarity patterns and conservation priorities in Cactaceae species from the Southern Central Andes: a case study from the Calchaquíes Valleys, Salta, Argentina Patrones de rareza y prioridades de conservación en especies de Cactaceae del sur de los Andes Centrales: un estudio en los Valles Calchaquíes, Salta, Argentina Godoy-Bürki, Ana C. Aagesen, Lone Sajama, Jesus M. Bravo, Silvia A. Alonso-Pedano, Mariana Ortega-Baes, Pablo In this study, 34 Cactaceae species from the Calchaquíes Valleys, Argentina, were studied to determine 1) species rarity level, 2) proportion of rare species among taxonomic and ecological groups and, 3) whether rareness is consistently distributed throughout the species geographical ranges. We used a model where rarity is defined by the geographic range and the local population size to define species rarity. Rareness was not concentrated in any particular taxonomic or ecological group of Cactaceae; however 28 species were rare at some level. In most species, rarity varied across the geographical range, only five species remained consistently rare in all the surveyed populations. Six species qualified as extremely rare, all from the Cactoideae subfamily, four endemic to the southernmost Central Andes and differing in their growth forms. Only two of the 34 studied species, appeared as both extremely and consistently rare across its distribution. Determining rarity levels is useful for identifying species that may be in danger and/or in need for further studies. Rarity, used as an indicator of species vulnerability, allowed us, to identify Cactaceae species that are more vulnerable to anthropogenic or natural disturbance, compared with common species. Many of the Cactaceae species identified here as rare were mentioned by IUCN at intermediate categories of extinction. Our approach seems then to yield useful results and rareness in the present context appears to be related with vulnerability to extinction within the southernmost Central Andes. En este trabajo se estudiaron 34 especies de Cactaceae de los Valles Calchaquíes, Argentina, para determinar 1) el nivel de rareza de las especies, 2) la proporción de especies raras entre grupos taxonómicos y ecológicos, y 3) la consistencia espacial de la rareza a lo largo del rango de distribución. Se definió a la rareza a través de un modelo que combina medidas del rango geográfico de distribución y el tamaño poblacional local de cada especie. La rareza no se concentró en ningún grupo taxonómico o ecológico particular de Cactaceae; sin embargo, 28 especies presentaron algún nivel de rareza. En la mayoría de las especies, la rareza varió a lo largo del área de distribución geográfica; sólo cinco especies fueron consistentemente raras en todas las poblaciones evaluadas. Seis especies fueron calificadas como extremadamente raras; todas de la subfamilia Cactoideae, cuatro endémicas del sur de los Andes Centrales y difiriendo en su forma de crecimiento. Sólo dos de las 34 especies estudiadas presentaron una rareza extrema y constante a lo largo de toda su distribución. La determinación del nivel de rareza fue útil para identificar especies que pueden estar en peligro o que pueden necesitar más estudios. Este trabajo permitió indicar qué especies de Cactaceae son más vulnerables a las perturbaciones antropogénicas o naturales, en comparación con las especies comunes. Muchas de las especies Cactaceae identificadas aquí como raras fueron mencionados por la IUCN en las categorías intermedias de extinción, por lo que la rareza parece estar relacionada con la vulnerabilidad a la extinción en la parte más sur de los Andes Centrales. Asociación Argentina de Ecología 2016-04-13 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articles Artículos application/pdf https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/106 10.25260/EA.16.26.2.0.106 Ecología Austral; Vol. 26 No. 1 (2016): April 2016, Pages 1-94; 72-82 Ecología Austral; Vol. 26 Núm. 1 (2016): April 2016, Pages 1-94; 72-82 1667-782X 0327-5477 spa https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/106/119 Derechos de autor 2016 Ana C. Godoy-Bürki, Lone Aagesen, Jesus M. Sajama, Silvia A. Bravo, Mariana Alonso-Pedano, Pablo Ortega-Baes https://creativecommons.org/licenses/by/3.0/ |