Results 91 to 100 of about 42,411 (234)

Multiple limit cycles in a Leslie–Gower-type predator–prey model considering weak Allee effect on prey

Nonlinear Analysis, 2017
In this work, a modified Leslie–Gower-type predator–prey model is analyzed, considering now that the prey population is affected by a weak Allee effect, complementing results obtained in previous papers in which the consequences of strong Allee effect ...
Eduardo González-Olivares, Alejandro Rojas-Palma, Betsabé González-Yañez   +2 more
doaj   +1 more source

Surface Engineering of Ti3C2Tx MXenes via Silanol Functionalization for Improved Electrochemical Performance

Small, EarlyView.
This study explores the covalent functionalization of Ti3C2Tx using 5,5′‐bis(triisopropoxysilyl)‐2,2′‐bipyridine in different solvents, revealing that only m‐xylene enables effective covalent bonding, ensuring structural stability and preventing layer swelling.
Abelardo Sánchez‐Oliva, Verónica Montes‐García, Ke Li, Kaitlyn Prenger, Xuyun Guo, Iwona Janica, Wojciech Kukułka, Adrián Tamayo, Pilar Prieto, Paolo Samorì, Valeria Nicolosi, Artur Ciesielski   +11 more
wiley   +1 more source

Patience, Fish Wars, rarity value & Allee effects [PDF]

, 2007
In a Small Fish War two agents interacting on a body of water have essentially two options: they can fish with restraint or without. Fishing with restraint is not harmful; fishing without yields a higher immediate catch, but may induce lower future ...
Joosten, Reinoud
core  

From pollen provision to pollinator: Species‐specific sterol assimilation by wild bees in urban landscapes

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Human‐driven landscape change, particularly urbanization, is reshaping pollinator communities, yet the functional traits that mediate species persistence remain poorly understood. Dietary specialization is commonly used to predict species vulnerability.
Yan Yang, Joan Casanelles‐Abella, Marco Moretti, Consuelo M. De Moraes, Mark C. Mescher, Pengjuan Zu   +5 more
wiley   +1 more source

Allee effects limit coral fertilization success

Proceedings of the National Academy of Sciences
Coral populations are being progressively thinned by climate change, which elevates the risk of reproductive failure from Allee effects during fertilization. Studies have shown that fertilization success improves during more intense and synchronized spawning, but the local dependence of fertilization on coral density remains unknown in ...
Peter J. Mumby, Greta Sartori, Elizabeth Buccheri, Cinzia Alessi, Hannah Allan, Christopher Doropoulos, Geraldine Rengiil, Gerard Ricardo   +7 more
openaire   +2 more sources

Promotion in the Australian Public Service: Improvements for Women and Stagnation for Cultural and Linguistic Minorities*

Economic Record, EarlyView.
We investigate whether being female, Indigenous, from a non‐English speaking background (NESB) or having a disability affects career advancement in the Australian Public Service. Over the past 20 years, women have become more likely to get promoted at senior ranks than similar men and just as likely at junior ranks. NESB staff have much lower promotion
Robert Breunig, David Hansell, Nu Nu Win
wiley   +1 more source

The permanence and periodic solution of a competitive system with infinite delay, feedback control, and Allee effect

Advances in Difference Equations, 2018
This paper is devoted to study the permanence and periodic solution of a competitive system with infinite delay, feedback control, and the Allee effect.
Lei Shi, Hua Liu, Yumei Wei, Ming Ma, Jianhua Ye   +4 more
doaj   +1 more source

A dynamical trichotomy for structured populations experiencing positive density-dependence in stochastic environments

, 2017
Positive density-dependence occurs when individuals experience increased survivorship, growth, or reproduction with increased population densities. Mechanisms leading to these positive relationships include mate limitation, saturating predation risk, and
B Dennis, B Dennis, DP Hardin, F Courchamp, F Courchamp, G Roth, G Roth, H Caswell, I Scheuring, J Gascoigne, JAJ Metz, JC Gascoigne, JFC Kingman, L Arnold, L Assas, M Benaïm, MA McCarthy, SJ Schreiber, SN Evans   +18 more
core   +1 more source

Quid Pro Quo? Private Information Flows in Shareholder Activism: Evidence from Mutual Fund Families

Journal of Accounting Research, EarlyView.
ABSTRACT This paper hypothesizes that information flows from target firms to large shareholders during activist campaigns and that these flows have governance consequences. Focusing on actively managed mutual fund families, we find that informed trading by large‐holding fund families increases during activist campaigns relative to smaller‐holding fund ...
EUNJEE KIM, HAI PHAM
wiley   +1 more source

The Effects of the Weak Allee Effect and Disease on the Dynamics of a Predator–Prey System: Stability and Bifurcation Properties

Axioms
In this paper, an eco-epidemiological model with a weak Allee effect and prey disease dynamics is discussed. Mathematical features such as non-negativity, boundedness of solutions, and local stability of the feasible equilibria are discussed ...
Yurong Dong, Hua Liu, Jianhua Ye, Gang Ma, Yumei Wei   +4 more
doaj   +1 more source