@article{PAR00002010,
  title = {{P}hytogeographical data and modern pollen rain of the puna belt in southern {P}eru ({N}evado {C}oropuna, {W}estern {C}ordillera)},
  author = {{K}uentz, {A}. and de {M}era, {A}. {G}. and {L}edru, {M}arie-{P}ierre and {T}houret, {J}ean-{C}laude},
  editor = {},
  language = {{ENG}},
  abstract = {{A}im {T}o improve knowledge of the distribution of species and modern pollen dispersal in the puna vegetation belt (central {A}ndes) for palaeoenvironmental analysis and reconstructions. {L}ocation {P}una belt, {N}evado {C}oropuna, {W}estern {C}ordillera, {P}eru. {M}ethods {T}he vegetation facies and belts of the area were mapped by remote sensing using a {M}arch 1998 {SPOT}4 image. {T}his was complemented by the interpretation of aerial photographs, by field sampling, and by the identification of plants. {D}ata from 1940 to 1994 from the {P}eruvian meteorological station network were modelled to characterize the relationship between climate and vegetation. {T}wenty-four soil-surface samples were collected in the various vegetation facies identified on the map, and standard palynological techniques were applied to analyse these samples. {A} principal components analysis was performed on the pollen data set. {R}esults {T}he map shows three bioclimatic belts and seven facies in the puna sensu lato, and identifies the main plants that are characteristic of each bioclimatic area. {T}he pollen results fit the vegetation facies and belts, including the plant species of the distinct facies that are well represented in the pollen assemblages. {T}he mesotropical belt is characterized by the predominance of {A}steraceae-type {A}mbrosia; the supratropical belt shows significant frequencies of {A}steraceae-type {S}enecio; the orotropical belt is characterized by high frequencies of {A}piaceae and includes {P}olylepis woodland and peat bogs; and the cryorotropical belt shows significant frequencies of {A}steraceae-type {S}enecio and {A}piaceae. {M}ain conclusions {T}he pollen grains of the plants that grow on the puna sensu lato are generally entomophilous and are therefore not transported far from their plant source. {T}he distinct bioclimatic facies and belts identified by the cartography can thus be well distinguished by their pollen production and deposition. {W}e were therefore able to characterize the relationship between pollen, vegetation and climate that can be used for palaeoenvironmental reconstructions. {A}n altitudinal pollen gradient on the western slopes of the central {A}ndes was revealed by the pollen study, with the succession of {A}steraceae-type {A}mbrosia (1800-2200 m), {M}alvaceae (2700-3300 m), {A}steraceae-type {S}enecio (3500-4100 m) and {A}piaceae (above 4600 m).},
  keywords = {central {A}ndes ; modern pollen rain ; palynology ; {P}eru ; phytogeography ; puna belt},
  booktitle = {},
  journal = {{J}ournal of {B}iogeography},
  volume = {34},
  numero = {10},
  pages = {1762--1776},
  ISSN = {0305-0270},
  year = {2007},
  DOI = {10.1111/j.1365-2699.2007.01728.x},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00002010},
}