BIODIVERSIDAD DE LAS PRADERAS TEMPLADAS DEL NORTE DE OAXACA , MÉXICO
Por:
Martorell, C, García-Meza, D, Bustamante-García, R, Villaseñor, JL, Ken, JGS, Torres-Colín, L, Delgado-Salinas, A, Steinmann, VW, Velázquez-Montes, E, Espejo-serna, A, López-Ferrari, AR, González-Elizondo, MS, González-Gallegos, JG, Alvarado-Cárdenas, LO, Islas-Hernández, CS, Fonseca-Juárez, RM, Carranza, E, Lorea-Hernández, F, Gómez-Hinostrosa, C, Hernández, HM, Flores-Olvera, H, Pérez-Calix, E, Hernández-Sandoval, L, Samain, MS, Hernández-Ledesma, P
Publicada:
1 ene 2025
Resumen:
Background: Despite their great diversity and the grave threats they face, temperate prairies have been overlooked. Question: This study addresses the ecosystem and taxonomic diversity of plants in the temperate prairies of Oaxaca. Studied species: All vascular plants. Study site and dates: The volcanic (VG) and calcicole grasslands (CG) and the oak savannas (OS) of northern Oaxaca in 2021 and 2022. Methods: After delimiting these three systems, we collected vouchers and described the vegetation and its conservation status. Results: VG and CG were the most diverse. In VG diversity is favored by grazing, and its suppression promotes exotic-plant invasion and diversity losses. CG has been heavily impacted by agriculture, overgrazing and pine afforestation. OS were the least diverse but the least sampled, and harbor plants that are important for conservation. In total we found 857 vascular plant species (although data show that this is a substantial underestimation), being the second most diverse grasslands in North America and encompassing 25 % of the species in the Tehuac & aacute;n-Cuicatl & aacute;n Valley in just 0.7 % of its area. The most diverse families were Asteraceae, Poaceae, Fabaceae, Lamiaceae and Euphorbiaceae. 37 % of the species are endemic to Mexico, with some microendemisms (3) and 26 threatened species. Four new taxa were discovered. Conclusions: Our results highlight the importance of studying and preserving the intertropical temperate prairies of Mexico due to the rapid destruction they face.
Filiaciones:
Martorell, C:
Univ Nacl Autonoma Mexico, Fac Ciencias, Dept Ecol & Recursos Nat, Mexico City, Mexico
García-Meza, D:
Univ Nacl Autonoma Mexico, Fac Ciencias, Dept Ecol & Recursos Nat, Mexico City, Mexico
Bustamante-García, R:
Univ Nacl Autonoma Mexico, Fac Ciencias, Dept Ecol & Recursos Nat, Mexico City, Mexico
Villaseñor, JL:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Bot, Mexico City, Mexico
Ken, JGS:
Inst Ecol AC, Ctr Reg Bajio, Red Divers Biol Occidente Mexicano, Patzcuaro, Michoacan, Mexico
Torres-Colín, L:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Bot, Mexico City, Mexico
Delgado-Salinas, A:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Bot, Mexico City, Mexico
Steinmann, VW:
Inst Ecol AC, Ctr Reg Bajio, Red Divers Biol Occidente Mexicano, Patzcuaro, Michoacan, Mexico
Velázquez-Montes, E:
Univ Nacl Autonoma Mexico, Fac Ciencias, Dept Biol Comparada, Mexico City, Mexico
Espejo-serna, A:
Univ Autonoma Metropolitana, Dept Biol, Div Ciencias Biol & Salud, Herbario Metropolitano,Unidad Iztapalapa, Mexico City, Mexico
López-Ferrari, AR:
Univ Autonoma Metropolitana, Dept Biol, Div Ciencias Biol & Salud, Herbario Metropolitano,Unidad Iztapalapa, Mexico City, Mexico
González-Elizondo, MS:
Inst Politecn Nacl, Ctr Interdisciplinario Invest Desarrollo Integral, Unidad Durango, Durango, Mexico
González-Gallegos, JG:
Inst Politecn Nacl, Ctr Interdisciplinario Invest Desarrollo Integral, Unidad Durango, Durango, Mexico
Alvarado-Cárdenas, LO:
Univ Nacl Autonoma Mexico, Fac Ciencias, Dept Biol Comparada, Mexico City, Mexico
Islas-Hernández, CS:
Univ Nacl Autonoma Mexico, Fac Ciencias, Dept Biol Comparada, Mexico City, Mexico
Fonseca-Juárez, RM:
Univ Nacl Autonoma Mexico, Fac Ciencias, Dept Biol Comparada, Mexico City, Mexico
Lorea-Hernández, F:
Inst Ecol A C, Xalapa, Veracruz, Mexico
Gómez-Hinostrosa, C:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Bot, Mexico City, Mexico
Hernández, HM:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Bot, Mexico City, Mexico
Flores-Olvera, H:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Bot, Mexico City, Mexico
Pérez-Calix, E:
Inst Ecol AC, Ctr Reg Bajio, Red Divers Biol Occidente Mexicano, Patzcuaro, Michoacan, Mexico
Hernández-Sandoval, L:
Univ Autonoma Queretaro, Fac Ciencias Nat, Biol, Lab Nacl Identificac & Caracterizac Vegetal LaniVe, Juriquilla, Queretaro, Mexico
Samain, MS:
Inst Ecol AC, Ctr Reg Bajio, Red Divers Biol Occidente Mexicano, Patzcuaro, Michoacan, Mexico
Hernández-Ledesma, P:
Inst Ecol AC, Ctr Reg Bajio, Red Divers Biol Occidente Mexicano, Patzcuaro, Michoacan, Mexico
gold, All Open Access; Gold Open Access
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