Plants at the summit: characterization of grasslands on cerros chatos of northeastern Uruguay
Flat-top hills (“cerros chatos”) stand out as distinct relief formations in northeastern Uruguay. These are elevations of about 300 m above mean sea level, generally formed by Jurassic sandstones, characterized by a flat top, a stone ledge of variable height, and a concave or stepped hillside. Littl...
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| Format: | article |
| Language: | English |
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2023
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| Online Access: | https://hdl.handle.net/20.500.12008/42925 |
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| _version_ | 1868890054689030144 |
|---|---|
| author | Pañella, Pedro |
| author2 | Mailhos Derman, Ary Bonifacino, José Mauricio Lezama Huerta, Felipe |
| author2_role | author author author |
| author_browse | Bonifacino, José Mauricio Lezama Huerta, Felipe Mailhos Derman, Ary Pañella, Pedro |
| author_facet | Pañella, Pedro Mailhos Derman, Ary Bonifacino, José Mauricio Lezama Huerta, Felipe |
| author_role | author |
| collection | COLIBRI |
| dc.contributor.none.fl_str_mv | Pañella Pedro, Universidad de la República (Uruguay). Facultad de Agronomía. Mailhos Derman Ary, Universidad de la República (Uruguay). Facultad de Agronomía. Bonifacino José Mauricio, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Ecología y Ciencias Ambientales. Lezama Huerta Felipe, Universidad de la República (Uruguay). Facultad de Agronomía. |
| dc.creator.none.fl_str_mv | Pañella, Pedro Mailhos Derman, Ary Bonifacino, José Mauricio Lezama Huerta, Felipe |
| dc.date.none.fl_str_mv | 2023 2024-03-05T13:07:21Z 2024-03-05T13:07:21Z |
| dc.format.none.fl_str_mv | 26 h. application/pdf |
| dc.identifier.none.fl_str_mv | Pañella, P, Mailhos Derman, A, Bonifacino, J [y otros autores]. "Plants at the summit: characterization of grasslands on cerros chatos of northeastern Uruguay". Darwiniana. [en línea] 2023, 11(2): 420-445. 26 h. DOI: 10.14522/darwiniana.2023.112.1145. 1850-1699 https://hdl.handle.net/20.500.12008/42925 10.14522/darwiniana.2023.112.1145 |
| dc.language.none.fl_str_mv | en eng |
| dc.publisher.none.fl_str_mv | Instituto de Botánica Darwinion |
| dc.relation.none.fl_str_mv | Darwiniana, 2023, 11(2): 420-445. |
| dc.rights.none.fl_str_mv | info:eu-repo/semantics/openAccess Licencia Creative Commons Atribución - No Comercial (CC - By-NC 4.0) |
| dc.source.none.fl_str_mv | reponame:COLIBRI instname:Universidad de la República instacron:Universidad de la República |
| dc.subject.none.fl_str_mv | Afforestation Conservation Flat-top hill Flora Sandstone |
| dc.title.none.fl_str_mv | Plants at the summit: characterization of grasslands on cerros chatos of northeastern Uruguay |
| dc.type.none.fl_str_mv | Artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
| description | Flat-top hills (“cerros chatos”) stand out as distinct relief formations in northeastern Uruguay. These are elevations of about 300 m above mean sea level, generally formed by Jurassic sandstones, characterized by a flat top, a stone ledge of variable height, and a concave or stepped hillside. Little is known about the vegetation atop these hills, which consists mostly of sparse grasslands with little to no grazing. As such, the aim of this study is to make the first characterization of the vegetation at the top of flat-top hills. In order to achieve this, we describe the vegetation of three emblematic hills in the region: Del Medio Hill, Vigilante Hill and Miriñaque Hill. Plant species composition surveys were carried out in spring 2021 and autumn 2022, identifying and delineating distinct vegetation formations. 315 species belonging to 63 vascular plant families were identified, with Poaceae and Asteraceae ranking as the top two families in terms of species richness. Among the species found, 31 are included in the list of priority species for conservation in Uruguay. Furthermore, Achyrocline marchiorii represents a new record for the Uruguayan flora. Two vegetation formations were present in all three hills: the ledge formation, associated with the rocky outcrops around the perimeter of the hilltops; and the crest formation, associated with the deep soils and low rock cover at the center of the hilltops. A shoulder formation of colluvial origin was also identified in the Miriñaque Hill, showing moderate slope and rockiness. The uncommon flora found on top of these hills is threatened due to the rapid increase of afforestation in the region, and the presence of the alien species Cynodon dactylon, Melinis repens and Pinus taeda. Such evidences emphasize the need for urgent management plans to protect these hills, which are not covered by any conservation program on a national or global scale. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | anni_53207cbff14713f72cfa623769431ede |
| identifier_str_mv | Pañella, P, Mailhos Derman, A, Bonifacino, J [y otros autores]. "Plants at the summit: characterization of grasslands on cerros chatos of northeastern Uruguay". Darwiniana. [en línea] 2023, 11(2): 420-445. 26 h. DOI: 10.14522/darwiniana.2023.112.1145. 1850-1699 10.14522/darwiniana.2023.112.1145 |
| instacron_str | Universidad de la República |
| institution | Universidad de la República |
| instname_str | Universidad de la República |
| language | eng |
| language_invalid_str_mv | en |
| network_acronym_str | anni |
| network_name_str | oai-lr-anni |
| oai_identifier_str | oai:colibri.udelar.edu.uy:20.500.12008/42925 |
| publishDate | 2023 |
| publishDateSort | 2023 |
| publisher.none.fl_str_mv | Instituto de Botánica Darwinion |
| reponame_str | COLIBRI |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | Licencia Creative Commons Atribución - No Comercial (CC - By-NC 4.0) |
| spelling | Plants at the summit: characterization of grasslands on cerros chatos of northeastern UruguayPañella, PedroMailhos Derman, AryBonifacino, José MauricioLezama Huerta, FelipeAfforestationConservationFlat-top hillFloraSandstoneFlat-top hills (“cerros chatos”) stand out as distinct relief formations in northeastern Uruguay. These are elevations of about 300 m above mean sea level, generally formed by Jurassic sandstones, characterized by a flat top, a stone ledge of variable height, and a concave or stepped hillside. Little is known about the vegetation atop these hills, which consists mostly of sparse grasslands with little to no grazing. As such, the aim of this study is to make the first characterization of the vegetation at the top of flat-top hills. In order to achieve this, we describe the vegetation of three emblematic hills in the region: Del Medio Hill, Vigilante Hill and Miriñaque Hill. Plant species composition surveys were carried out in spring 2021 and autumn 2022, identifying and delineating distinct vegetation formations. 315 species belonging to 63 vascular plant families were identified, with Poaceae and Asteraceae ranking as the top two families in terms of species richness. Among the species found, 31 are included in the list of priority species for conservation in Uruguay. Furthermore, Achyrocline marchiorii represents a new record for the Uruguayan flora. Two vegetation formations were present in all three hills: the ledge formation, associated with the rocky outcrops around the perimeter of the hilltops; and the crest formation, associated with the deep soils and low rock cover at the center of the hilltops. A shoulder formation of colluvial origin was also identified in the Miriñaque Hill, showing moderate slope and rockiness. The uncommon flora found on top of these hills is threatened due to the rapid increase of afforestation in the region, and the presence of the alien species Cynodon dactylon, Melinis repens and Pinus taeda. Such evidences emphasize the need for urgent management plans to protect these hills, which are not covered by any conservation program on a national or global scale.Instituto de Botánica DarwinionPañella Pedro, Universidad de la República (Uruguay). Facultad de Agronomía.Mailhos Derman Ary, Universidad de la República (Uruguay). Facultad de Agronomía.Bonifacino José Mauricio, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Ecología y Ciencias Ambientales.Lezama Huerta Felipe, Universidad de la República (Uruguay). Facultad de Agronomía.2024-03-05T13:07:21Z2024-03-05T13:07:21Z2023Artículoinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion26 h.application/pdfPañella, P, Mailhos Derman, A, Bonifacino, J [y otros autores]. "Plants at the summit: characterization of grasslands on cerros chatos of northeastern Uruguay". Darwiniana. [en línea] 2023, 11(2): 420-445. 26 h. DOI: 10.14522/darwiniana.2023.112.1145.1850-1699https://hdl.handle.net/20.500.12008/4292510.14522/darwiniana.2023.112.1145reponame:COLIBRIinstname:Universidad de la Repúblicainstacron:Universidad de la RepúblicaenengDarwiniana, 2023, 11(2): 420-445.Las obras depositadas en el Repositorio se rigen por la Ordenanza de los Derechos de la Propiedad Intelectual de la Universidad de la República.(Res. Nº 91 de C.D.C. de 8/III/1994 – D.O. 7/IV/1994) y por la Ordenanza del Repositorio Abierto de la Universidad de la República (Res. Nº 16 de C.D.C. de 07/10/2014)info:eu-repo/semantics/openAccessLicencia Creative Commons Atribución - No Comercial (CC - By-NC 4.0)oai:colibri.udelar.edu.uy:20.500.12008/429252026-04-14T10:10:32Z |
| spellingShingle | Plants at the summit: characterization of grasslands on cerros chatos of northeastern Uruguay Pañella, Pedro Afforestation Conservation Flat-top hill Flora Sandstone |
| status_str | publishedVersion |
| title | Plants at the summit: characterization of grasslands on cerros chatos of northeastern Uruguay |
| title_full | Plants at the summit: characterization of grasslands on cerros chatos of northeastern Uruguay |
| title_fullStr | Plants at the summit: characterization of grasslands on cerros chatos of northeastern Uruguay |
| title_full_unstemmed | Plants at the summit: characterization of grasslands on cerros chatos of northeastern Uruguay |
| title_short | Plants at the summit: characterization of grasslands on cerros chatos of northeastern Uruguay |
| title_sort | Plants at the summit: characterization of grasslands on cerros chatos of northeastern Uruguay |
| topic | Afforestation Conservation Flat-top hill Flora Sandstone |
| url | https://hdl.handle.net/20.500.12008/42925 |