@article{fdi:010064836,
  title = {5000 years of lacustrine ecosystem changes from {L}ake {P}etit ({S}outhern {A}lps, 2200m a.s.l.) : regime shift and resilience of algal communities},
  author = {{C}artier, {R}. and {B}risset, {E}. and {P}ailles, {C}. and {G}uiter, {F}. and {S}ylvestre, {F}lorence and {R}uaudel, {F}. and {A}nthony, {E}. {J}. and {M}iramont, {C}.},
  editor = {},
  language = {{ENG}},
  abstract = {{S}ediments from {L}ake {P}etit (2200m a.s.l., {S}outhern {A}lps) are particularly relevant for analysis of coupled landscape palaeoecology and palaeolimnology. {D}iatom assemblages, organic matter composition of sediments (total nitrogen and organic carbon) and {P}ediastrum boryanum concentrations were obtained from a 144-cm-long core, enabling the reconstruction of the aquatic ecosystem over nearly the last 5000 cal. {BP}. {F}rom 4800 to 4300 cal. {BP}, {L}ake {P}etit was a stable diatom-productive water body dominated by alkaliphilous diatoms ({S}taurosirella pinnata). {D}uring this period, nutrients and cations were supplied by the chemical weathering of podzols that developed under conifer woodlands. {T}his overall stability was suddenly interrupted at 4200 cal. {BP} by a major detrital pulse that was probably climate linked (4200 cal. {BP} event) and that triggered a drop in diatom productivity and diversity. {F}rom 4100 to 2400 cal. {BP}, diatom productivity progressively decreased, whereas {P}ediastrum developed. {D}iatom assemblages were more diversified (predominance of {P}seudostaurosira robusta, {P}. brevistriata and {P}. pseudoconstruens) and reflected a regime of continuous erosion, whereas slopes were colonised by grazed grasslands. {F}inally, from 2400 cal. {BP} to the present day, diatom assemblages reveal a slight acidification and nutrient enrichment of waters concomitant with increasing human pressure in the catchment. {T}hese results demonstrate the close links between ecosystems and the ready propagation of disturbances throughout watersheds that might lead to abrupt regime shifts in such alpine environments.},
  keywords = {alpine lake ; catchment-lake interaction ; diatoms ; {H}olocene ; reference ; conditions ; 4200 cal ; {BP} event ; {FRANCE}},
  booktitle = {},
  journal = {{H}olocene},
  volume = {25},
  numero = {8},
  pages = {1231--1245},
  ISSN = {0959-6836},
  year = {2015},
  DOI = {10.1177/0959683615580862},
  URL = {https://www.documentation.ird.fr/hor/fdi:010064836},
}