Results 71 to 80 of about 12,706 (203)

Hierarchical competition models with Allee effects

Journal of Biological Dynamics, 2014
We consider a two-species hierarchical competition model with a strong Allee effect. The Allee effect is assumed to be caused by predator saturation. Moreover, we assume that there is a 'silverback' species x that gets first choice of the resources and where growth is limited by its own intraspecific competition, while the second 'inferior' species y ...
Laila, Assas, Saber, Elaydi, Eddy, Kwessi, George, Livadiotis, David, Ribble   +4 more
openaire   +2 more sources

Advancing conservation breeding programs for marine invertebrates

Conservation Biology, EarlyView.
Abstract In the face of ecosystem change and biodiversity loss caused by climate change and other stressors, conservation breeding, or captive breeding, with the aim of reintroduction for wild population recovery, is an emerging tool for preventing species’ extinction and rehabilitating ecosystems.
Elora H. López‐Nandam, Bart Shepherd, Kylie Lev, Rebecca Albright   +3 more
wiley   +1 more source

Pest‐preservation paradox among insects

Conservation Biology, EarlyView.
The pest‐preservation paradox is a non‐binary perspective that insects range from those that are harmful and requiring management on the one side, to those requiring conservation intervention on the opposite end of the spectrum. Importantly, the vast majority of insects occur somewhere in the center of the two extremes, and their position along the ...
Michael J. Samways, Charl Deacon, René Gaigher, James S. Pryke   +3 more
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

Vergleich eines 3D‐gedruckten Hautmodells mit etablierten Methoden zur Lehre der Stanzbiopsie mit Nahtversorgung

JDDG: Journal der Deutschen Dermatologischen Gesellschaft, EarlyView.
Zusammenfassung Hintergrund Realistische Trainingsmodelle sind essenziell, um Ärztinnen und Ärzte in klinischen Prozeduren zu schulen. In dieser Studie wurde untersucht, ob ein kostengünstiges, selbst generiertes 3D‐gedrucktes Hautmodell Früchten und Schaumstoffmodellen beim Erlernen von Hautstanzen überlegen ist.
Sandra Schuh, Stefan Schiele, Anna Rubeck, Ludwig Christian Hinske, Julia Welzel, Alexander Schneller   +5 more
wiley   +1 more source

Using Catch Data to Estimate Changes in Global Commercial Abalone Abundance

Fisheries Management and Ecology, EarlyView.
ABSTRACT Changes in global wild capture production of abalone are explored to infer potential changes in biological stocks. The study found that 77% (or 10 out of the 13) of the countries that reportedly caught abalone in the wild have experienced declines in catches between 1980 and 2023, and on aggregate catch declined by almost 83% between 1980 and ...
Douglas Crookes
wiley   +1 more source

Dispersal mediates metapopulation response to local and regional stressors

Insect Conservation and Diversity, EarlyView.
A feature of recent insect declines is that widespread, formerly common species are among the worst affected. We designed a metapopulation simulation to ask how dispersal capability interacts with landscape and population stressors that act at different spatial scales.
Christopher A. Halsch, Matthew L. Forister, Eliza M. Grames   +2 more
wiley   +1 more source

Mandatory Audits of Private Companies

International Journal of Auditing, EarlyView.
ABSTRACT We examine mandatory audits using Spanish private companies to generate insight into (1) how audit thresholds vary in tightness and impact, (2) which audit thresholds are crossed to cause audit commencement and cessation, (3) whether firms take actions to avoid audits and (4) whether audits provide economic benefits.
Darren Henderson, Min Jeong Hong, Kaleab Mamo   +2 more
wiley   +1 more source

Wet Transfer of In Situ Grown Azo‐Containing Two‐Dimensional Conjugated Covalent Organic Framework Films for Photoswitchable Electronic Devices

Angewandte Chemie, Volume 138, Issue 32, 3 August 2026.
Wet transfer of an atomically flat azo‐functionalized 2D covalent organic framework film onto monolayer MoS2 enables clean van der Waals heterostructure devices with reversible photoswitching and multilevel nonvolatile memory. ABSTRACT Two‐dimensional π‐conjugated covalent organic frameworks (2D π‐COFs) combine in‐plane π‐delocalization with periodic ...
Kexin Wang, Bin Han, Fan Qiu, Yeonsu Jeong, Yusheng Chen, Yubin Fu, Christos Gatsios, Marco Vittorio Nardi, Melanie Timpel, Yang Hou, Shun‐Qi Xu, Paolo Samorì   +11 more
wiley   +2 more sources

Governing the Local Digital Transformation: A European Comparative Perspective

Public Administration, EarlyView.
ABSTRACT This study compares governance structures, policy formulation and implementation of administrative digitalization at the local level in three countries with different administrative traditions: France, Germany and the United Kingdom.
Sabine Kuhlmann, Justine Marienfeldt, Frederico Ganz   +2 more
wiley   +1 more source