Divergent responses of organic matter composition to incubation temperature

Creamer, Courtney A.; Macdonald, Lynne M.; Baldock, J. A.; Sanderman, Jonathan; Farrell, Mark

doi:10.1016/j.geoderma.2015.06.019

Cited by 4 publications

(4 citation statements)

References 72 publications

(90 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…After incubating soil samples with the addition of a labile (fresh) and a less labile (aged) plant residue at 12 and 32 °C, Creamer et al . () reported a feedback between microbial function and SOM composition. They observed that Gram‐negative (G − ) bacteria were more abundant in the presence of the aged residue, especially at the lower temperature.…”

Section: Introductionmentioning

confidence: 99%

“…In this case, priming will be specific to soil type and microbial community size, which may be complicated further if the change in temperature causes a shift in the decomposer community. After incubating soil samples with the addition of a labile (fresh) and a less labile (aged) plant residue at 12 and 32 ∘ C, Creamer et al (2015) reported a feedback between microbial function and SOM composition. They observed that Gram-negative (G − ) bacteria were more abundant in the presence of the aged residue, especially at the lower temperature.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Temperature response of plant residue and soil organic matter decomposition in soil from different depths

Yanni

Diochon

Helgason

et al. 2017

European J Soil Science

View full text Add to dashboard Cite

Evaluating how decomposition responds to temperature is important for understanding the soil's response under a changing climate. Our objective in this study was to evaluate the effect of temperature and addition of residue at different soil depths on decomposition of the residue and native soil organic matter (SOM) (i.e. priming). Soil samples from depths of 5–10, 20–25 and 40–45 cm were incubated at 5, 15 and 25 °C with and without 13C‐labelled barley (Hordeum vulgare L.) residue. Respiration, microbial biomass, phospholipid fatty acids (PLFAs) and mineral N were measured during the incubation. Respiration from residue and SOM increased with temperature in all treatments. The activation energy (Ea) was smaller in the control subsurface soil, indicating a more labile substrate, which resulted in greater respiration than surface soil when respiration was standardized to the amount of C. With the addition of residue, the subsurface soil respired less than the surface soil because of preferential use of residue‐C over soil organic carbon (SOC) and mineral N limitation. This resulted in negative priming of native SOC in the subsurface soil when residue was added. All PLFA biomarkers increased in the subsurface soil when incubated, even without the addition of residue, indicating a positive response of microbial activity to the optimized incubation conditions. Subsurface soil with small OC content and with small Ea had an active and efficient microbial community and relatively large rates of respiration. Highlights The response of residue and SOM decomposition to temperature in soil with a C gradient was evaluated. We assessed residue turnover with 13C in surface and subsurface soils under varying temperatures. Activation energy was smaller in subsurface than surface soil. Temperature response of subsoil with small SOC content was similar to that of topsoil.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Temperature response of plant residue and soil organic matter decomposition in soil from different depths

Yanni

Diochon

Helgason

et al. 2017

European J Soil Science

View full text Add to dashboard Cite

show abstract

“…The experiment began on October 21, 2019. All the tubes were weighed and rehydrated every 2 days to maintain a 60% water-holding capacity during the experiment period (Creamer et al, 2015). PVC tubes were placed in an incubator under standardized conditions with the same condition as pre-incubated.…”

Section: Decomposition Experimentsmentioning

confidence: 99%

Soil degradation regulates the effects of litter decomposition on soil microbial nutrient limitation: Evidence from soil enzymatic activity and stoichiometry

Niu

Wang

et al. 2023

Front. Plant Sci.

View full text Add to dashboard Cite

Soil microorganisms could obtain energy and nutrients during litter decomposition with the help of soil extracellular enzymes. The litter types were among the most critical factors that affect soil extracellular enzyme activities. However, how litter types modulate the soil extracellular enzyme activity with grassland gradation is unclear. Here, we conducted a 240-day experiment of two different types of litter decomposition on soil extracellular enzyme activity and stoichiometry in different degraded grasslands. We found that C-acquiring enzyme activity and the enzyme stoichiometry of C/N were higher in Chloris virgata litter than in Leymus chinensis litter at lightly degraded level and C-acquiring enzyme activity in C. virgata was 16.96% higher than in L. chinensis. P-acquiring enzyme activity had the same trend with litter types in moderately and highly degraded levels and it was 20.71% and 30.89% higher in C. virgata than that in L. chinensis, respectively. The change of the enzyme stoichiometry with litter types was only showed in the enzyme stoichiometry of C/N at lightly degraded level, suggesting that litter types only affected the microbial C limitation in lightly degraded grassland. Almost all soil extracellular enzyme activities and extracellular enzyme stoichiometry, except the enzyme stoichiometry of N/P, decreased with grassland degraded level increasing. All vector angles were less than 45° suggesting that soil microorganisms were limited by N rather than by P during the decomposition process. Enzyme vector analysis revealed that soil microbial communities were co-limited by C and N during litter decomposition. Moreover, based on Random Forest (explaining more than 80%), we found that soil total nitrogen, total carbon, total phosphorus, dissolved organic C, pH and EC were important factors affecting soil enzyme activities by degradation levels. Our results emphasized that degradation levels could modulate the influences of litter types on soil extracellular enzyme activity. Our study enhanced our understanding in resource requirements for microbial communities to litter resources in degraded grassland and helped us to provide new ideas for improving degraded grassland ecosystems.

show abstract

“…A degradação da MO pelos micro-organismos do solo são mediadas por enzimas cuja a síntese é controlada por inúmeros fatores bióticos e abióticos como a disponibilidade de nutrientes e água, condições ambientais, estrutura da comunidade microbiana do solo e complexidade química da MO (ALLISON et al, 2013). A complexidade química da MO tem sido considerada como o principal fator que regula sua decomposição, uma vez que compostos simples como hidratos de carbono e aminoácidos com baixos teores de lignina são rapidamente decompostos, enquanto que compostos quimicamente complexos como lignina e compostos aromáticos alifáticos são decompostos mais lentamente sendo acumulado nos solos (NG et al, 2014;CREAMER et al, 2015). Além da complexidade química o acesso da comunidade microbiana aos compostos a serem degradados também influenciam nas taxas e velocidade de degradação da MOS (DUNGAIT et al, 2012).…”

Section: Matéria Orgânica Do Solo (Mos)unclassified

Bioindicadores e diversidade de bactérias em ensaios com biochar e composto orgânico combinados com nitrogênio e inibidor de urease

Coelho¹

View full text Add to dashboard Cite

Ao meu amor Bruno, por ser meu eterno companheiro, vivendo ao meu lado todos os momentos alegres ou tristes, com carinho, paciência e dedicação, me ensinando todos os dias o verdadeiro significado da palavra AMOR. À minha Mãe, por ser essa Guerreira que sempre lutou para fazer o melhor por nós, e por me educar, auxiliar nos estudos e, acima de tudo, por me ensinar os maiores e verdadeiros valores da vida. À minha família, Darc, Dani, Tiago, Leandro e João Gabriel por acreditarem em mim desde o início, e por me apoiarem em todas as decisões e por dividirem comigo cada momento especial da minha vida. A memória de minha querida vovó Dirce, minha professora e mestre de vida, por todos os seus ensinamentos, carinho, dedicação e amor incondicional. Mesmo distante esta é mais uma conquista e um sonho que realizamos juntas! Vocês são tudo de mais importante em minha vida. Amo Vocês! Palavras-chave: carbono da biomassa, respiração basal, atividade enzimática do solo, hidrólise de diacetato fluoresceína (FDA), β-glicosidase, urease, fosfatase ácida, desidrogenase, 16S rDNA, pirosquenciamento, fertilizante orgânico e organomineral, nitrogênio, Cerrado.

show abstract

Divergent responses of organic matter composition to incubation temperature

Cited by 4 publications

References 72 publications

Temperature response of plant residue and soil organic matter decomposition in soil from different depths

Temperature response of plant residue and soil organic matter decomposition in soil from different depths

Soil degradation regulates the effects of litter decomposition on soil microbial nutrient limitation: Evidence from soil enzymatic activity and stoichiometry

Bioindicadores e diversidade de bactérias em ensaios com biochar e composto orgânico combinados com nitrogênio e inibidor de urease

Contact Info

Product

Resources

About