Results 131 to 140 of about 6,156 (296)

Herbivore species asynchrony underpins multitrophic stability across plants, herbivores and predators

Journal of Animal Ecology, EarlyView.
Across a grassland food web, multitrophic stability was most closely associated with herbivore species asynchrony. By identifying herbivores as a key source of temporal buffering between plants and predators, this study shows that intermediate consumers can play a central role in stabilizing the complex food web.
Takehiro Sasaki, Taiki Tachibana, Xiaoming Lu, Kei Uchida, Xuezhen Zhao, Issei Nishimura, Daichi Makishima, Kousuke Tachibana, Xi Sun, Yuki Iwachido, Wenhuai Li, Yongfei Bai   +11 more
wiley   +1 more source

Four-point functions and contact terms from higher-spin Ward identities of Chern-Simons-matter theory

Journal of High Energy Physics
Large N quasifermionic (QF) Chern-Simons-matter theories exhibit weakly-broken higher-spin symmetry and contain an infinite-dimensional algebra of almost-conserved higher-spin currents.
Trivko Kukolj
doaj   +1 more source

The consequences of host heterogeneity for parasite transmission depend on how host infectiousness is determined

Journal of Animal Ecology, EarlyView.
This study proposes two contrasting scenarios for how host infectiousness is determined: recipient dependence and donor dependence. These scenarios fundamentally alter how host heterogeneity shapes parasite transmission, demonstrating that the process by which infectiousness is determined is crucial for understanding the consequences of host ...
Jacob A. Cohen, Andrew D. Dean, Mark Viney, Andy Fenton   +3 more
wiley   +1 more source

Spherical Harmonics and Gravity Intensity Modeling Related to a Special Class of Triaxial Ellipsoids

Mathematics
The G-modified Helmholtz equation is a partial differential equation that allows gravity intensity g to be expressed as a series of spherical harmonics, with the radial distance r raised to irrational powers.
Gerassimos Manoussakis, Panayiotis Vafeas   +1 more
doaj   +1 more source

Co‐phylogeny and biogeography of the myrmecophilous beetle Paussus favieri (Carabidae, Paussinae) and its host ant Pheidole pallidula (Hymenoptera, Myrmicinae)

Insect Science, EarlyView.
Strict patterns of co‐divergence have rarely been documented other than among organisms and their symbionts. In this paper, using a molecular approach, we inferr the population‐level phylogenies of a Mediterranean ant species Pheidole pallidula and its nest parasite, the obligate myrmecophilous beetle Paussus favieri. We then investigate the role of co‐
Davide Bergamaschi, Wendy Moore, Andrea Di Giulio   +2 more
wiley   +1 more source

Resource Availability and Habitat Quality Drive Time‐Lag Effects in High‐Altitude Ungulate Distribution

Integrative Zoology, EarlyView.
Our analysis revealed that while climate strongly influenced species distributions, habitat change drove most observed delays in distribution responses. In terms of community ecology, dispersed communities exhibited shorter time lags than concentrated groups. Analyses of lag duration revealed a 5–6‐year distribution lag effect in high‐altitude ungulate
Lu Wang, Xiuming Li, Ben Huang, Xiaoxue Li, Jizhen Chen, Ziyan Liao, Kun Jin   +6 more
wiley   +1 more source

Phylogenetic and Functional Originality Shape Species Positions in Flea–Mammal Networks Across Biogeographic Realms

Integrative Zoology, EarlyView.
The relationship between the position of a flea species in the networks and its functional originality was found to be consistently positive in all realms, independently of which originality index was used. ABSTRACT We investigated the relationships between a species’ network position (measured as the combined normalized degree, species strength, and ...
Boris R. Krasnov, Vasily I. Grabovsky
wiley   +1 more source

Predicting ecological interactions across space through pairwise integration of latent network patterns

Methods in Ecology and Evolution, EarlyView.
Abstract Ecological communities are complex and exhibit considerable spatial variability, presenting challenges in accurately understanding these systems. A primary obstacle in ecological research is the existence of ‘missing links’ between species: inevitable unobserved interactions that limit our comprehension of ecological networks and their ...
Kesem Abramov, Geut Galai, Barry Biton, Rami Puzis, Shai Pilosof   +4 more
wiley   +1 more source

Symmetry and conserved quantities in $$ f(R) $$ f ( R ) -gravity: Mei vs. Noether approaches

European Physical Journal C: Particles and Fields
We study the symmetries and conserved quantities in $$f(R)$$ f ( R ) gravity for the static, spherically symmetric Reissner–Nordström spacetime using two complementary frameworks: Noether symmetries and Mei symmetries.
Tahia F. Dabash, Moataz Emam, Lukas Schöppner   +2 more
doaj   +1 more source

Flexible specification of directional spatial processes for eigenvector maps

Methods in Ecology and Evolution, EarlyView.
Abstract Understanding spatial structure is crucial when analysing species distributions, biodiversity and community dynamics. Spatial analysis using eigenvector maps provides a general framework for capturing spatial patterns in ecological data. Among these methods, asymmetric eigenvector maps (AEM) are particularly useful for capturing asymmetric ...
Shota Homma, Daisuke Murakami, Shinya Hosokawa, Koji Kanefuji   +3 more
wiley   +1 more source