Results 21 to 30 of about 10,296 (263)
The Ricker Competition Model of Two Species: Dynamic Modes and Phase Multistability
Mathematics, 2022 The model of two species competing for a resource proposed by R. May and A.P. Shapiro has not yet been fully explored. We study its dynamic modes. The model reveals complex dynamics: multistable in-phase and out-of-phase cycles, and their bifurcations ...
Matvey Kulakov +2 more
doaj +1 more source
Oikos, 2023 Deciphering how climatic variability modulates the interspecific interactions in natural systems is one of the most interesting and least studied ecological processes. Rodent outbreaks or irruptions in semiarid Chile are associated with rainfall pulses driven by the El Niño Southern Oscillation (ENSO). During the last decade, north‐
Mauricio Lima +3 more
openaire +2 more sources
Fauna Norvegica, 1985 An examination of 83 cyprinid specimens collected in Lake Akersvann, SE Norway in Sept. 1984 and in June and Sept. 1985 showed these to be natural hybrids between Scardinius erythrophthalmus and Abramis brama.
Per Pethon
doaj +1 more source
Fauna Norvegica, 1987 A topographic description of the plerocercus larva of Floriceps saccatus is given. The larva was found to be covered by palmate or paw-like microtriches, not only on the adherent surface of the bothridia as earlier described from adult trypanorhynch ...
Karin Andersen
doaj +1 more source
EFFECTS OF REFUGES AND DENSITY DEPENDENT DISPERSAL ON INTERSPECIFIC COMPETITION DYNAMICS
International Journal of Bifurcation and Chaos, 2012 We present a classical interspecific competition model. Individuals compete for a resource on a common patch and can go to a refuge. It is assumed that if species would remain on the competition patch, species 1 survives and species 2 would go extinct. Therefore, species 1 is Locally Superior Competitor (LSC) and species 2 Locally Inferior Competitor (
Nguyen-Ngoc, D. +2 more
openaire +3 more sources
Fauna Norvegica, 1989 During the years 1980 - 1986, an intensive whitefish, Coregonus lavaretus, exploitation programme was carried out in the mountain reservoir Goppollen, SE Norway, in an attempt to improve whitefish quality and to reduce interspecific competition between ...
Svein Jakob Saltveit, Åge Brabrand
doaj +1 more source
Agronomy, 2023 Weeds are a permanent constraint on crop productivity in agriculture. Due to the importance of the effect of weeds on the crop, there has been great interest in establishing the competitive ability of each species to optimize its control.
Jose L. Gonzalez-Andujar +2 more
doaj +1 more source
Fauna Norvegica, 1987 Carlin-tagged Atlantic salmon smolts have been released in the River Eira in western Norway during the period 1961 - 1980. Just after release birds were observed as smolt predators.
Ole Reitan +2 more
doaj +1 more source
Conventional niche overlap measurements are not effective for assessing interspecific competition
Frontiers in Ecology and Evolution, 2023 Interspecific competition is notoriously difficult to detect and quantify, especially in species that are wide-ranging or otherwise difficult to track in the wild.
Dennis L. Murray +3 more
doaj +1 more source
Fauna Norvegica, 1988 Change in nematode infestation in stomachs of Grey Seals caught at the breeding ground at Froan on the coast of Sør-Trøndelag county, Norway, is recorded. The abundance of nematodes decreased from 1977/78 to 1982/84. In the first period more than 50% of
Øystein Wiig
doaj +1 more source