Modularity of trophic network is driven by phylogeny and migration in a steppe ecosystem

Evidence is mounting that the structures of trophic networks are governed by migratory movements of interacting species and also by their phylogenetic relationships. Using the largest available trophic network of a large steppe ecosystem, we tested that steppe trophic networks including migratory species are associated with (i) migratory strategy and (ii) phylogenetic relatedness of interacting species: (1) whole graph-level metrics, estimated as modularity, and (2) species-level network metrics, measured as node degree (number of interacting partners), and centrality metrics. We found that (1) a substantial number of links were established by migrant taxa; (2) the phylogenetic signal in network structure was moderate for both consumer and prey nodes; (3) both consumer and prex phylogenies affected modularity, which was modulated by migration strategy; and (4) all species-level graph properties significantly differed between networks including and excluding migratory taxa. In sum, here we show that the structure of steppe trophic networks is primarily governed by migratory strategies and to a lesser extent, by phylogenetic relatedness, using the largest available food web representative for steppe ecology and migration biology

Supercapacitors and Their Military Applicability

There are several types of the electrical power devices that are hardly known outside professional circles. One of them is the supercapacitor, which is very interesting attributable to its capabilities. Given its parameters, it can be considered unique, thus, its use in some special equipment is indispensable. With the spread of electricity, there will be more and more military equipment in which currently there is no alternative to its use. It is therefore well worth learning a bit more about it

Habitat selection of the Great Bustard (Otis tarda) in Körös-Maros National Park

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A hidrogén lehetséges honvédelmi (katonai) alkalmazása

ÖSSZEFOGLALÁS: 2020. április 27-én az Innovációs és Technológiai Minisztérium védnökségével megalakult a Nemzeti Hidrogéntechnológiai Platform (NHTP). Az alapító tagok egyike a Magyar Honvédség Modernizációs Intézete. A szervezethez csatlakozó tagok mindegyike elkészítette a saját hidrogénnel kapcsolatos céljait, elképzeléseit. A tanulmány a Modernizációs Intézet által készített koncepció alapján készült. További információk: https://www.hfc-hungary.org/platform/