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2020

Новости за 08.08.2020

Empirical vs. light-use efficiency modelling for estimating carbon fluxes in a mid-succession ecosystem developed on abandoned karst grassland

Plos.org 

by Koffi Dodji Noumonvi, Mitja Ferlan

Karst systems represent an important carbon sink worldwide. However, several phenomena such as the CO2 degassing and the exchange of cave air return a considerable amount of CO2 to the atmosphere. It is therefore of paramount importance to understand the contribution of the ecosystem to the carbon budget of karst areas. In this study conducted in a mid-succession ecosystem developed on abandoned karst grassland, two types of model were assessed, estimating... Читать дальше...

Functional morphology of antennae and sensilla of Hippodamia variegata (Coleoptera: Coccinellidae)

Plos.org 

by Ya-Nan Hao, Yuan-Xing Sun, Chang-Zhong Liu

The lady beetle Hippodamia variegata is an important biocontrol agent of many aphids. In this study, the fine morphology of antennae as well as the typology, morphology and distribution of antennal sensilla were comprehensively examined by scanning electron microscopy. The antennal morphology of female and male are similar and consist of the scape, pedicel, and nine flagellomeres. No significant difference was detected in the length of each segment between two sexes... Читать дальше...



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Москва

Мадуро высоко оценил парад ко Дню Победы в Москве


Presynaptic inhibition rapidly stabilises recurrent excitation in the face of plasticity

Plos.org 

by Laura Bella Naumann, Henning Sprekeler

Hebbian plasticity, a mechanism believed to be the substrate of learning and memory, detects and further enhances correlated neural activity. Because this constitutes an unstable positive feedback loop, it requires additional homeostatic control. Computational work suggests that in recurrent networks, the homeostatic mechanisms observed in experiments are too slow to compensate instabilities arising from Hebbian plasticity and need to be complemented by rapid compensatory processes. Читать дальше...


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