Results 51 to 60 of about 22,400,397 (381)

Directed network Laplacians and random graph models

open access: yesRoyal Society Open Science, 2021
We consider spectral methods that uncover hidden structures in directed networks. We establish and exploit connections between node reordering via (a) minimizing an objective function and (b) maximizing the likelihood of a random graph model. We focus on
Xue Gong   +2 more
doaj   +1 more source

Biodiversity and community structure [PDF]

open access: yesProceedings of the National Academy of Sciences, 2021
In natural plant communities, one finds ample examples of both competitive and facilitative interactions. The effect of a species A on another species B is said to be competitive (facilitative) if an increase in A ’s population size reduces (enhances) the population growth rate of B .
openaire   +3 more sources

Effects of Red Imported Fire Ants (Solenopsis invicta) on the Species Structure of Ant Communities in South China

open access: yesSociobiology, 2014
We evaluated the effects of invasive red imported fire ants (RIFAs), Solenopsis invicta Buren, on native ant communities at three habitats in South China.
Yong Yue Lu   +3 more
doaj   +1 more source

Coupling Between the Responses of Plants, Soil, and Microorganisms Following Grazing Exclusion in an Overgrazed Grassland

open access: yesFrontiers in Plant Science, 2021
Grazing exclusion is an effective management practice to restore grassland ecosystem functioning. However, little is known about the role of soil microbial communities in regulating grassland ecosystem functioning during long-term ecosystem restorations.
Zhen Wang   +5 more
doaj   +1 more source

Impact of community structure on information transfer [PDF]

open access: yes, 2008
The observation that real complex networks have internal structure has important implication for dynamic processes occurring on such topologies. Here we investigate the impact of community structure on a model of information transfer able to deal with ...
Arenas, Àlex   +2 more
core   +2 more sources

Agricultural management and plant selection interactively affect rhizosphere microbial community structure and nitrogen cycling

open access: yesMicrobiome, 2019
Rhizosphere microbial communities are key regulators of plant performance, yet few studies have assessed the impact of different management approaches on the rhizosphere microbiomes of major crops.
Jennifer E. Schmidt   +3 more
semanticscholar   +1 more source

Ordered community structure in networks

open access: yes, 2012
Community structure in networks is often a consequence of homophily, or assortative mixing, based on some attribute of the vertices. For example, researchers may be grouped into communities corresponding to their research topic.
Gregory, Steve
core   +1 more source

Estimating carnivore community structures [PDF]

open access: yesScientific Reports, 2017
AbstractObtaining reliable estimates of the structure of carnivore communities is of paramount importance because of their ecological roles, ecosystem services and impact on biodiversity conservation, but they are still scarce. This information is key for carnivore management: to build support for and acceptance of management decisions and policies it ...
Jiménez, J.   +6 more
openaire   +4 more sources

Coral bacterial community structure responds to environmental change in a host-specific manner

open access: yesNature Communications, 2019
The global decline of coral reefs heightens the need to understand how corals respond to changing environmental conditions. Corals are metaorganisms, so-called holobionts, and restructuring of the associated bacterial community has been suggested as a ...
M. Ziegler   +9 more
semanticscholar   +1 more source

Finding local community structure in networks

open access: yes, 2005
Although the inference of global community structure in networks has recently become a topic of great interest in the physics community, all such algorithms require that the graph be completely known.
Aaron Clauset   +7 more
core   +1 more source

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