Effects of microbial conditioning and temperature on the leaf-litter shredding activity of Phylloicussp
Acta sci., Biol. sci
;
42: e52919, fev. 2020. tab, graf
Artigo
em Inglês
| LILACS, VETINDEX
| ID: biblio-1460943
ABSTRACT
Few studies try to explain the effects in tropical lotic ecosystems of an increase in water temperature on the shredding activity of invertebrate shredders, particularly in association with the quality of the leaf litter and the degree of litter conditioning. Therefore, the aims of this study were as follows i) to better understand how this key invertebrate shredder group affects the decomposition of different species of leaf litter under gradual increases in temperature and microbial conditioning; and ii) to verify the possible consequences on leaf mass loss (LML). Three species of leaf litter were used in two experiments. Inexperiment I, the litters of three species (Protium spruceanum, Richeria grandisand Ingalaurina) at three conditioning levels (1, 7, 14 days) were tested under five different temperatures (20, 22, 24, 26 and28°C). In experiment II, the leaf litters of three species were used, without conditioning, under four temperatures (20, 22, 26 and27°C). The shredding performed by Phylloicussp. was largely dependent on the lignin and cellulose concentrations in each leaf species, independent of conditioning. The presence or absence of conditioning may cause the shredders to use different energy compensation strategies in response to the temperature increases.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Trituração de Resíduos Sólidos
/
Ecossistema
/
Viabilidade Microbiana
/
Insetos
Idioma:
Inglês
Revista:
Acta sci., Biol. sci
Ano de publicação:
2020
Tipo de documento:
Artigo
Instituição/País de afiliação:
Instituto Federal de Educação, Ciência e Tecnologia de Goiás/BR
/
Universidade de Brasília/BR
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