@article{fdi:010065330,
  title = {{C}alcareous benthic foraminifera from the upper central {P}eruvian margin : control of the assemblage by pore water redox and sedimentary organic matter},
  author = {{C}ardich, {J}. and {G}utierrez, {D}. and {R}omero, {D}. and {P}erez, {A}. and {Q}uipuzcoa, {L}. and {M}arquina, {R}. and {Y}upanqui, {W}. and {S}olis, {J}. and {C}arhuapoma, {W}. and {S}ifeddine, {A}bdelfettah and {R}athburn, {A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e studied 'living' (stained) benthic foraminifera in the upper border of the {P}eruvian oxygen minimum zone ({OMZ}) to determine the relationship between species' distribution and pore water and sediment geochemistry under oxygen deficiency. {S}uperficial sediments were sampled between 2009 and 2011 from 2 bathymetric transects off central {P}eru (45 to 300 m depth). {T}he quantity (total organic carbon, total nitrogen and chloroplastic pigment equivalents [{CPE}]) and quality (chlorophyll a/phaeopigments ratio) of organic matter ({OM}) were evaluated. {B}enthic foraminifera were sampled in the top 5 cm of sediment. {C}ommonly, the inner shelf sediments were sulfidic and labile {OM}-rich, whereas the outer shelf and upper slope sediments exhibited postoxic conditions (e.g. anoxic and non-sulfidic) with less labile {OM}, typical of {OMZ} core sediments. {M}ixed conditions were found in shelf sediment samples from {A}pril 2010, when the effects of {E}l {N}ino 2009/2010 were withdrawing. {F}oraminiferal assemblages exhibited differences according to redox conditions and {OM} quality, and were concentrated in the topmost sediment. {A} canonical correspondence analysis and non-parametric correlations indicated that {B}olivina costata, {N}onionella auris and {V}irgulinella fragilis were characteristic of sulfidic/labile {OM} sediments, thriving slightly deeper in the sediment. {I}n contrast, {B}olivina pacifica headed the assemblage representative of postoxia/less labile {OM}. {B}olivina seminuda and {B}uliminella tenuata (both dominant under postoxia) were not associated with any specific measured parameter, although were present in sulfidic sediments, suggesting other factors were involved in their distribution.},
  keywords = {{B}enthic foraminifera ; {A}noxia ; {S}ulfide ; {L}abile organic matter ; {PEROU} ; {PACIFIQUE}},
  booktitle = {},
  journal = {{M}arine {E}cology {P}rogress {S}eries},
  volume = {535},
  numero = {},
  pages = {63--87},
  ISSN = {0171-8630},
  year = {2015},
  DOI = {10.3354/meps11409},
  URL = {https://www.documentation.ird.fr/hor/fdi:010065330},
}