@article{fdi:010083194,
  title = {{C}hromolaena odorata ({L}.) {K}&{R} ({A}steraceae) invasion effects on soil microbial biomass and activities in a forest-savanna mosaic},
  author = {{K}one, {A}. {W}. and {K}assi, {S}pay and {K}offi, {B}. {Y}. and {M}asse, {D}ominique and {M}aiga, {A}. {A}. and {T}ondoh, {J}. {E}. and {K}isaka, {O}. {M}. and {T}oure, {G}. {P}. {T}.},
  editor = {},
  language = {{ENG}},
  abstract = {{P}lant invasion may have significant ecological and socio-economic impacts across agroecologies. {C}hromolaena odorata ({A}steraceae) is one of the world's most invasive plants albeit it is considered a suitable fallow plant in {W}est {A}frica. {H}owever, its impacts on soil biological processes are poorly understood. {T}his study was conducted in intermingled forest and savanna sites invaded by {C}. odorata in {C}entral {C}ote d'{I}voire ({W}est {A}frica) to bridge this knowledge gap. {I}nvaded forest sites ({COFOR}) were compared to adjacent natural forest fragments ({FOR}) while invaded savanna sites ({COSAV}) were compared to adjacent natural savanna fragments ({SAV}). {S}oil (0-10 cm depth) physico-chemical variables, including soil organic {C} ({SOC}), total soil {N} and available {N} and {P} concentrations were measured. {A}dditionally, soil microbial biomass ({MBC}), carbon mineralization ({C}-min), acid phosphatase, beta-glucosidase, and fluorescein diacetate were measured. {F}urther, the {MBC}/{SOC} ratio and the metabolic quotient (q{CO}(2)) were calculated. {A}n index of invasion effect ({IE}) computed as the cumulative percent change in the microbial and enzyme activities was determined for each ecosystem context. {R}esults showed that soil {MBC} and {MBC}/{SOC} ratio declined in {COFOR} relative to {FOR}. {I}n general, {C}min, enzymatic activities, q{CO}(2) and available {N} and {P} significantly increased in the {C}. odorata sites relative to the respective reference ecosystems, particularly savanna, potentially due to a larger gap in the litters' quality. {A}s a result, the invasion effect was twice as high in savanna ({IE} = 292.8%) as in forest ({IE} = 147.5%). {H}owever, a {P}rincipal {C}omponent {A}nalysis showed that the {COSAV} were close to {COFOR} stands without mixing, probably due to contrasting initial soil organic matter and clay contents. {T}hese results improved our knowledge on the changes in soil microbial attributes and the mechanisms of soil fertility restoration or improvement in response to {C}. odorata invasion in natural forests and savannas of {W}est {A}frica.},
  keywords = {{B}eneficial invasion effect ; {E}nzyme activities ; {I}nvasion effect index ; {N}-{NO}3-/{N}-{NH}4+ ratio ; {S}iam weed ; {S}oil legacy effect ; {COTE} {D}'{IVOIRE}},
  booktitle = {},
  journal = {{C}atena},
  volume = {207},
  numero = {},
  pages = {105619 [11 p.]},
  ISSN = {0341-8162},
  year = {2021},
  DOI = {10.1016/j.catena.2021.105619},
  URL = {https://www.documentation.ird.fr/hor/fdi:010083194},
}