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Marcelo S. Moretti
Universidade Federal de Minas Gerais
BiodiversityEcologySTREAMSPlant litterBiology
34Publications
14H-index
814Citations
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Publications 36
Newest
#2Walace P. KifferH-Index: 3
Last. Marcelo S. MorettiH-Index: 14
view all 5 authors...
Despite the importance of shredders in organic matter processing in streams, information about the habitat specificities of different taxa is scarce. Herein, we evaluated the habitat preferences of invertebrate shredders in tropical forest streams. A total of 72 leaf patches were sampled in three Atlantic Forest streams (SE Brazil). For each sample, 20 environmental variables were measured, including water properties and characteristics of the leaf patch. We used an Outlying Mean Index analysis ...
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#1Cinthia G. CasottiH-Index: 3
#2Walace P. KifferH-Index: 3
Last. Marcelo S. MorettiH-Index: 14
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In this study, we aimed to evaluate the effects of leaf conditioning time on aquatic hyphomycete assemblages and the performance of invertebrate shredders. We hypothesized that post-conditioning effects, i.e., that phase in which leaf nutritional quality no longer increase or even decline, occur late in tropical streams. Consequently, leaf quality would increase monotonously with fungal colonization and leaves conditioned for longer periods would promote higher growth and survival of shredders t...
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#1Maria João Feio (UC: University of Coimbra)H-Index: 19
#2Gustavo Fm. Leite (UnB: University of Brasília)
Last. José F. Gonçalves (UnB: University of Brasília)H-Index: 1
view all 21 authors...
Abstract The definition of conservation strategies and ecological assessment schemes requires understanding ecosystem patterns over multiple spatial scales. This study aimed to determine if macro-scale structural and functional (processes) patterns associated with stream ecosystems differed among three neotropical biomes (Cerrado, Amazon, Atlantic Forest). We compared the aquatic communities (benthic invertebrates and hyphomycetes) and processes (decomposition rates, primary production and biofi...
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We evaluated the growth of periphyton and colonization of sterilized cobbles by invertebrates in three forest streams that differ in the conservation level of riparian zones. Because of differences in light availability and water temperature, we hypothesized the growth of periphytic algae would be higher in the most altered stream. Consequently, invertebrate assemblages would differ among streams. Cobbles with similar sizes were ashed and incubated for 7, 15, 30, 45 and 60 days in the studied st...
1 CitationsSource
#1Walace P. KifferH-Index: 3
#2Flávio MendesH-Index: 3
Last. Marcelo S. MorettiH-Index: 14
view all 5 authors...
We evaluated the effect of leaves of native and exotic tree species on the feeding activity and performance of the larvae of Triplectides gracilis, a typical caddisfly shredder in Atlantic Forest streams. Leaves of four native species that differ in chemistry and toughness (Hoffmannia dusenii, Miconia chartacea, Myrcia lineata and Styrax pohlii) and the exotic Eucalyptus globulus were used to determine food preferences and rates of consumption, production of fine particulate organic matter (FPOM...
4 CitationsSource
#1Flávio MendesH-Index: 3
#2Walace P. KifferH-Index: 3
Last. Marcelo S. MorettiH-Index: 14
view all 3 authors...
We evaluated the influence of mesohabitats and catchments on the structural and functional composition of invertebrate communities associated with leaf patches in Atlantic Forest streams. We hypothesized that invertebrate communities would be more influenced by inter-habitat than inter-catchment variation, i.e., invertebrate taxonomic and trophic composition would differ more between pools and riffles than among catchments. Invertebrate richness differed among catchments only, while values of to...
4 CitationsSource
The presence of canopy cover may influence the amount of organic detritus and stored water in bromeliad tanks and, consequently, the colonization of these ecosystems by aquatic invertebrates. The aim of this study was to determine the effects of canopy cover on the colonization of the tank-bromeliad Aechmea lingulata in the restinga, an ecosystem composed of a variety of plant communities in the sandy coastal plains of Brazil. We hypothesized that the taxonomic composition of invertebrate commun...
1 CitationsSource
#1Walace P. KifferH-Index: 3
#2Flávio MendesH-Index: 3
Last. Marcelo S. MorettiH-Index: 14
view all 6 authors...
5 CitationsSource
#1Luz Boyero (JCU: James Cook University)H-Index: 25
#2Richard G. Pearson (JCU: James Cook University)H-Index: 33
Last. Catherine M. Yule (Monash University)H-Index: 19
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Plant litter breakdown is a key ecological process in terres- trial and freshwater ecosystems. Streams and rivers, in particular, contribute substantially to global carbon fluxes. However, there is little information available on the relative roles of different drivers of plant litter break- down in fresh waters, particularly at large scales. We present a global-scale study of litter breakdown in streams to compare the roles of biotic, climatic and other environ- mental factors on breakdown rate...
29 CitationsSource
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