A guiding instruction material which contains six lesson plans in the subject was constructed for the teacher to administer creative drama-based instruction. The topics of ecosystems and matter cycles were taught to the both of groups for 3 weeks. A science attitude test was administered to both ...
Model of material cycling in a closed ecosystem 3 who analysed a number of detailed models of nutrient cycles in both open and closed ecosystems. Here we propose an alternative model of a trophic chain, which suggests that the effect of material cycling is to stabilise the system... RM Nisbe...
A sizable pool of Si is contained as accumulations of amorphous silica, or biogenic silica (BSi), in living tissues of growing plants, known as phytoliths, and, after decomposition of organic material, as remains in the soil. The annual fixation of phytolith silica ranges from 60200 Tmol yr...
Material cycles in tropicalsubtropical coastal ecosystems Convener:*Atsushi Watanabe(Department of Mechanical and Environmental Informatics Graduate School of Information Science and Engineering Tokyo Institute of Technology), Kazuhiko Fujita(Department of Physics and Earth Sciences, University of the Ryukyus),...
diverse microbes that play crucial roles in the biogeochemical cycles of phosphorus, sulfur, and other elements also exert considerable influence on GHG emissions from lakes19. However, in previous studies, microbiota has rarely been comprehensively investigated as predictors of GHG emissions, particularly...
and the magnitude and diversity of its resident biomass, our understanding of the composition and activity of microbial communities inhabiting these hidden aquatic ecosystems is still patchy, often developed from samples of a few select wells or a single aquifer. In particular, the geochemical and ...
Charge-discharge cycles of energy and matter are mechanisms for progressively degrading solar photons to heat in coupled solar -> trophic -> biochemical interactions at different scales of hierarchical organization. The conservation principle underlies all these processes.A review of the broad phenomena,...
This evolutionary process of diversification may have spanned several hundred million years (from the origin of life 3.9–4.5 Gya, to the origin of anoxygenic phototrophy, 3.5–3.7 Gya), thus unfolding on a timescale over which the geochemical cycles interacted dynamically and reciprocally...
Deciduous forest ecosystems are characterized by moderate weathering release and geochemical drainage, and by a strong biological cycle (85% of the soluble Si is derived from the soil biogenic silica). In contrast, coniferous forest ecosystems have a weak biological cycle and a strong Si weathering...
Data on Eastern European fossil mammal fauna and palaeoflora dated to the Last Glacial Maximum (24–18 kyr BP) have been summarized using PARADOX and ARC/VIEW software. Palaeobotanical material from 54 sections (197 samples altogether) was studied, along with mammal fossils recovered from 55 loca...