Results 21 to 30 of about 1,320,114 (290)
Functional volumes, niche packing and species richness: biogeographic legacies in the Congo Basin [PDF]
Royal Society Open Science, 2020 Understanding the determinants of species coexistence in complex and species-rich communities is a fundamental goal of ecology. Patterns of species coexistence depend on how biotic interactions and environmental filtering act over ecological and ...
Frederik Van de Perre +6 more
doaj +1 more source
Patterns in diurnal co-occurrence in an assemblage of hoverflies (Diptera: Syrphidae)
European Journal of Entomology, 2013 In this study we analyzed the inter-specific relationships in assemblages of syrphids at a site in northern Italy in order to determine whether there are patterns in diurnal co-occurrence. We adopted a null model approach and calculated two co-occurrence
Manuela D'AMEN +3 more
doaj +1 more source
Can fish species co-occurrence patterns be predicted by their trait dissimilarities?
Royal Society Open Science, 2023 Trait-based analyses have been successful in determining and predicting species association outcomes in diverse communities. Most studies have limited the scope of this approach to the biotic responses of a small number of species or geographical regions.
Ruben D. Cordero, Donald A. Jackson
doaj +1 more source
On the nature of reconnection at a solar coronal null point above a separatrix dome [PDF]
, 2013 Three-dimensional magnetic null points are ubiquitous in the solar corona, and in any generic mixed-polarity magnetic field. We consider magnetic reconnection at an isolated coronal null point, whose fan field lines form a dome structure.
Galsgaard, K. +2 more
core +3 more sources
Frontiers in Marine Science, 2021 Community assembly is the result of both, deterministic and stochastic processes. The former encompasses niche-based local-scale mechanisms such as environmental filtering and biotic interactions; the latter includes ecological drift, probabilistic ...
Nelson Valdivia +17 more
doaj +1 more source
Reconstruction of the null-test for the matter density perturbations [PDF]
, 2015 We systematically study the null-test for the growth rate data first presented in [S. Nesseris and D. Sapone, arXiv:1409.3697] and we reconstruct it using various combinations of data sets, such as the $f\sigma_8$ and $H(z)$ or Type Ia supernovae (SnIa ...
García-Bellido, Juan +2 more
core +3 more sources
Brazilian Journal of Biology, 2007 The main factors that structure Neotropical animal communities have been the subject of discussion in ecology communities. We used a set of null models to investigate the existence of structure in snake communities from the Cerrado in Central Brazil in ...
FGR. França, AFB. Araújo
doaj +1 more source
Iheringia: Série Zoologia, 2016 Functional classification of animals is necessary to enhance the predictive power of food web models. However, while there is a large database for functional classification of benthic invertebrates (Functional Feeding Groups, FFG) in the temperate zone ...
Miguel Saigo +2 more
doaj +1 more source
Null Models of Economic Networks: The Case of the World Trade Web [PDF]
, 2011 In all empirical-network studies, the observed properties of economic networks are informative only if compared with a well-defined null model that can quantitatively predict the behavior of such properties in constrained graphs.
A Rao +62 more
core +5 more sources
Null vectors of the $WBC_2$ algebra [PDF]
, 1993 Using the fusion principle of Bauer et al. we give explicit expressions for some null vectors in the highest weight representations of the \bc algebra in two different forms.
Bauer +15 more
core +2 more sources