INVENTARIO DE LA FLORA DE ANGIOSPERMAS DEL DISTRITO PULÁN, PROVINCIA SANTA CRUZ, CAJAMARCA, PERÚ
DOI:
https://doi.org/10.22497/1066Abstract
Resumen
Se presenta el inventario actualizado de la flora de angiospermas del distrito Pulán, provincia Santa Cruz, departamento Cajamarca. El área estudiada se encuentra entre los 78º52’01”-79º01’30” de longitud oeste y 06º38 ́30”-06º49’48” de latitud sur, entre los 1600 y 3200 m de altitud. Se registraron 751 especies distribuidas en 440 géneros y 118 familias de angiospermas. Los taxones se encuentran ubicados en tres formaciones vegetales: bosque tropical estacionalmente seco (BTES), bosque nublado seco de la vertiente occidental (BNSVO) y jalca (J). Las familias más representativas son Asteraceae, 58 géneros (13,18%) y 89 especies (11,85%), seguida de Orchidaceae, con 31 géneros y 71 especies que corresponden al 7,04% y el 9,45%, y Poaceae, con 31 géneros y 52 especies que representan el 7,04% y 6,92%. Los géneros con mayor presencia son los siguientes: Epidendrumcon 18 especies (2,40%), seguido de Solanum con 13 especies (1,73%) y Tillandsia con 12 especies (1,60%). Se encontraron 72 especies endémicas; la familia Orchidaceae tiene 10 taxones (13,89%), seguida de Asteraceae con 8 (11,11%) y Calceolariaceae con 6 (8,33%). Las familias más diversas en el bosque tropical estacionalmente seco (BTES) son Orchidaceae con 21 spp., seguido de Asteraceae con 17 spp. y Bromeliaceae con 16 spp. Las familias más diversas en el bosque nublado seco de la vertiente occidental son Orchidaceae con 48 spp., Solanaceae con 17 spp. y Asteraceae con 16 spp.; y las familias más diversas en la jalca (J) son: Asteraceae con 18 spp., seguida de Rubiaceae y Melastomataceae con 5 spp. cada una.
Palabras clave: flora, angiospermas, endemismos, Pulán, vertiente occidental andina, formaciones vegetales
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Abstract
We provide an updated inventory of the angiosperm flora of Pulan District, Santa Cruz Province, Cajamarca Department. The study area is located between 78º52’01”-79º01’30” W and 06º38 ́30”- 06º49’48” S, and 1600 to 3200 m of elevation. Seven hundred and fifty-one species were recorded, belonging to 440 genera and 118 families of angiosperms. The taxa are located on three plant for-mations: seasonally dry tropical forest (SDTF), cloud dry forest of the western slopes (CDFWS), and the Jalca (J). The most diverse families are Asteraceae with 58 genera and 89 species, representing 13.18% and 11.85% of the genera and species respectively, followed by Orchidaceae (31 genera or 7.04% and 71 species or 9.45 %) and, in third place, Poaceae (31 genera or 7.04% and 52 species or 6.92%). The most diverse genera are Epidendrum, with 18 species or 2.40%, Solanum, with 13 species or 1.73% and Tillandsia, with 12 species or 1.60%. Seventy-two species were found to be endemic, being the Orchidaceae family the best represented with 10 spp. (13.89%), followed by both Aster-aceae with 8 spp. (11.11 %) and Calceolariaceae with 6 spp. (8.33%). The most diverse families in the seasonally dry tropical forest (SDTF) are Orchidaceae with 21 spp., Asteraceae with 17 spp. and Bromeliaceae with 16 spp. The most diverse families in the CDFWS are Orchidaceae with 48 spp., followed by both Solanaceae with 17 spp. and Asteraceae with 16 spp. In the Jalca, the most diverse families are Asteraceae with 18 spp. and both Rubiaceae and Melastomataceae with 5 spp. each.
Keywords: flora, angiosperms, endemism, Pulan, western Andean slopes, plant formations.
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