@article{fdi:010054389,
  title = {{I}mportance of demography and dispersal for the resilience and restoration of a critically endangered tropical conifer {A}raucaria nemorosa},
  author = {{K}ettle, {C}.{J}. and {E}nnos, {R}.{A}. and {J}affr{\'e}, {T}anguy and {M}c{C}oy, {S}. and {L}e {B}orgne, {T}. and {G}ardner, {M}. and {H}ollingsworth, {P}.{M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A}ims {I}n situ species survival involves persistence at current sites and/or colonization of new locations. {D}etermining the likelihood of these events requires an understanding of population dynamics and dispersal. {W}e address these issues in populations of a critically endangered tropical conifer {A}raucaria nemorosa and provide conservation recommendations. {L}ocation {P}ort {B}oise, island of {G}rand {T}erre, {N}ew {C}aledonia, {P}acific {O}cean. {M}ethods {W}e characterize the demographic structure of six populations of {A}. nemorosa based upon size class frequencies and relative basal area compared to competing angiosperm trees. {U}sing genotype data from 280 adult individuals at seven microsatellite loci, we indirectly estimate dispersal distances and project a maximal dispersal envelope around the extant populations. {R}esults {O}ur survey detected marked differences in demographic parameters including the proportion of basal area occupied by {A}. nemorosa versus angiosperm trees (ranging from 25% to 77%), the size class frequency distributions of {A}. nemorosa and seedling densities (ranging from 500 to 37300 seedlings ha(-1)) among some populations. {W}right's genetic neighbourhood ranged from 22 to 876 trees, and historic gene dispersal ranged from 10.8 to 82.4 m, indicating that most seed dispersal is < 100 m. {M}ain conclusions {T}his study indicates that the risk of recruitment failure in remnant populations of {A}raucaria nemorosa is low in most of the stands but is high in the inland population {F}oret {N}ord. {I}n situ natural regeneration appears to be constrained in this population, most likely as a consequence of competitive exclusion. {O}ur results also suggest that the majority of seed dispersal is too short to allow {A}. nemorosa to disperse to new more hospitable sites within an ecologically relevant time-scale. {O}ur findings have implications not only for this emblematic tree species but also for a wide range of fragmented and degraded plant species populations with limited dispersal that are vulnerable to competitive exclusion.},
  keywords = {{C}ompetition ; fragmentation ; microsatellites ; natural regeneration ; {N}ew {C}aledonia ; seed dispersal ; {NOUVELLE} {CALEDONIE}},
  booktitle = {},
  journal = {{D}iversity and {D}istributions},
  volume = {18},
  numero = {3},
  pages = {248--259},
  ISSN = {1366-9516},
  year = {2012},
  DOI = {10.1111/j.1472-4642.2011.00835.x},
  URL = {https://www.documentation.ird.fr/hor/fdi:010054389},
}