@article{fdi:010069373,
  title = {{F}unctional consequences of realistic extinction scenarios in {A}mazonian soil food webs},
  author = {{C}ardenas, {R}. {E}. and {D}onoso, {D}. {A}. and {A}rgoti, {A}. and {D}angles, {O}livier},
  editor = {},
  language = {{ENG}},
  abstract = {{G}lobal biodiversity loss is creating a more urgent need to understand the role organisms play in ecosystem functioning and mechanisms of control. {D}ecomposition of dead organic matter is a key ecological process that ensures soil formation, nutrient availability, and carbon sequestration. {T}o gain understanding of how biodiversity and ecosystems function together to control leaf-litter decomposition processes in a tropical rain forest ({Y}asuni {N}ational {P}ark, {E}cuador), we predicted the consequences of the decomposition process using a protocol in which we systematically disassemble the structural functionality of the soil macrofauna communities. {W}e (1) describe the structure and function of the edaphic communities in detail and (2) explore the functional consequences of structural changes in these communities using a non-random exclusion experiment to simulate body size-related extinctions. {T}o do this, we manipulated access of five size classes of soil invertebrates to eight types of plant leaf-litter resources. {A}fter measuring and identifying about 4400 soil individuals belonging to 541 morphospecies, 12 functional groups, and following the fate of about 2000 tree leaves in a 50-ha plot, we showed that (1) soil invertebrate communities were composed of a few common and many rare morphospecies that included mostly leaf-litter transformer groups, with the most morphospecies and the greatest abundance coming from {H}ymenoptera, {C}ollembola, and {C}oleoptera; (2) our survey captured 63-74% of the total soil biodiversity of the study area (meaning there may be up to 860 morphospecies); (3) litter transformers covered the widest range of body volume, and all groups were evenly distributed at small and large spatial scales (i.e., we found no patterns of spatial aggregation); (4) changes in food web structure significantly altered biomass loss for only three of the eight leaf-litter treatments, suggesting the decomposition process was highly resistant to drastic changes such as size-biased biodiversity loss independent of resource quality. {W}e conclude organic matter decomposition may depend on all non-additive effects that arise from multi-species interactions, including facilitation, interspecific interference competition, and top-down control that predators exert over detritivores at all body size ranges.},
  keywords = {belowground ; biodiversity and ecosystem functioning ; brown food webs ; decomposers ; {E}cuador ; extinction order ; invertebrates ; leaf-litter decomposition ; {Y}asuni {N}ational {P}ark ; {EQUATEUR} ; {YASUNI} {PARC} {NATIONAL}},
  booktitle = {},
  journal = {{E}cosphere},
  volume = {8},
  numero = {2},
  pages = {e01692 [32 p.]},
  ISSN = {2150-8925},
  year = {2017},
  DOI = {10.1002/ecs2.1692},
  URL = {https://www.documentation.ird.fr/hor/fdi:010069373},
}