Marcel Okamoto Tanaka

• Abstract

  Riparian forests provide important environmental goods and services and have large ecological importance in watersheds, but these forests are being rapidly deforested and degraded. The monitoring of ecosystem functions from riparian forests in different states of conservation is important to determine adequate management strategies. Nutrient cycling and carbon fixation are important funct…

  Evaluation of the effects of riparian forest structure, and soil and litter properties, on leaf decomposition rates, AP.R

• Abstract

  Stream ecosystems have great importance for the maintenance of water quality in watersheds, but are subject to disturbances that influence their self-depuration capacity, increasing primary production (PP) and resulting in environmental problems such as eutrophication. The biomass of benthic microalgae in lotic ecosystems is a major indicator of PP, being normally evaluated using chloroph…

  Multispectral analysis for quantification of benthic chlorophyll in streams: an experimental approach, BP.IC

• Abstract

  The usage of faunal indicators such as ants can allow a better comprehension of the trajectory of ecosystems under restoration, when compared to parameters related only to vegetation, mainly regarding ecosystem functions, since many species respond to environmental changes. The objective of this study is to evaluate if the structure and composition of ant species vary in relation of veget…

  Ants as bioindicators of vegetation structure and soil fertility: monitoring the restoration of a riparian forest, BP.IC

• Abstract

  Native vegetation removal affects the ecosystem ecological functions like nutrient cycling. Riparian forests act as a link between the terrestrial and aquatic environment, and thus have an important role in the biogeochemical cycling operation. Litter-soil layer is mainly responsible for nutrient cycling and went back into the system through the decomposition, which is the mineralization …

  Litter-soil layer in reforested riparian forests, BP.DR

(Only some records are available in English at this moment)

• Abstract

  Modifications in land cover by intensive agricultural development increase forest degradation, biodiversity loss, soil degradation and, as a consequence, changes in soil microbial community. However, these impacts have triggered forest restoration efforts worldwide to revert land degradation, focused on the sustainability. The Environment Secretariat of Sao Paulo State, Brazil, suggested…

  Soil microbial functional communities in restored tropical forests, BE.EP.DR

• Abstract

  In this ongoing Masters project, we are testing the hypothesis that the biofilm influences the zonation of sheltered rocky shores of the Brazilian South-East by reducing the occurrence of barnacles on the inferior midlittoral. We are also assessing the spatial extension of this zonation pattern, as well as barnacle mortality in this zone. These studies will permit to obtain baseline data …

  Discussion and data analysis of the project "zonation in sheltered rocky shores of the subtropical Atlantic: spatial variation and biofilm effects", BE.EP.MS