@article{fdi:010046136,
  title = {{L}es refuges {\`a} {P}odocarpus sp. pl. de la for{\^e}t atlantique br{\'e}silienne : une analyse du pass{\'e} pour mieux les prot{\'e}ger dans le futur = {P}odocarpus sp. pl. refugia in {B}razil's atlantic forest : analysing the past to improve future protection},
  author = {{L}edru, {M}arie-{P}ierre and {F}erraz {S}alatino, {M}. {L}.},
  editor = {},
  language = {{FRE}},
  abstract = {{T}he {A}tlantic rainforest has the second highest biodiversity in {B}razil. {I}t has been shrinking rapidly in area as a result of intensive deforestation, and only 7% of the original cover now remains, as isolated patches or in ecological reserves. {I}n order to obtain new information on the distribution of the {A}tlantic rainforest during the {Q}uaternary, we examined herbarium data to locate relevant populations and extracted {DNA} from fresh leaves from 26 populations. {T}he present-day distribution of endemic {P}odocarpus populations shows that they are widely dispersed across eastern {B}razil, and that the expansion of {P}odocarpus recorded in single {A}mazonian pollen records may have originated from either western or eastern populations. {G}enetic analysis enabled us to determine the boundaries of their regional expansion: northern and central populations of {P}. sellowii appeared between 5 degrees and 15 degrees {S} some 16,000 years ago; populations of {P} lambertii or sellowii have appeared between 15 degrees and 23 degrees {S} at different times since the last glaciation at least; and {P} lambertii appeared between 23 degrees and 30 degrees {S} during the recent expansion of {A}raucaria forests. {T}he combination of botanical, pollen, and molecular analyses proved to be a rapid means of inferring distribution boundaries for sparse populations and their regional evolution within tropical ecosystems. {T}oday the rainforest refugia we identified have become hotspots that are crucial to the survival of the {A}tlantic forest under unfavourable climatic conditions and, as such, offer the only possible opportunity for this type of forest to expand in the event of future climate change.},
  keywords = {{A}tlantic rainforest ; {P}odocarpus ; palynology ; climate change ; interglacial refugia ; {B}razil},
  booktitle = {},
  journal = {{B}ois et {F}orets des {T}ropiques},
  numero = {299},
  pages = {63--70},
  ISSN = {0006-579{X}},
  year = {2009},
  URL = {https://www.documentation.ird.fr/hor/fdi:010046136},
}