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The biodiversity of food webs is composed of horizontal (i.e. within trophic levels) and vertical diversity (i.e. the number of trophic levels). Understanding their joint effect on stability is a key challenge. Theory mostly considers their individual effects and focuses on small perturbations near equilibrium in hypothetical food webs. Here, we study the joint effects of horizontal and vertical diversity on the stability of hypothetical (modelled) and empirical food webs. In modelled food webs, horizontal and vertical diversity increased and decreased stability, respectively, with a stronger positive effect of producer diversity on stability at higher consumer diversity. Experiments with an empirical plankton food web, where we manipulated horizontal and vertical diversity and measured stability from species interactions and from resilience against large perturbations, confirmed these predictions. Taken together, our findings highlight the need to conserve horizontal biodiversity at different trophic levels to ensure stability.
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http://dx.doi.org/10.1111/ele.13282 | DOI Listing |
J Hazard Mater
September 2025
Department of Environmental & Sustainable Engineering, University at Albany, State University of New York, Albany, NY 12222, United States. Electronic address:
This study examined the behavior of six U.S. Environmental Protection Agency (EPA) regulated per- and polyfluoroalkyl substances (PFAS) compounds in vegetated soils amended with Class A and Class B biosolids.
View Article and Find Full Text PDFOrthod Craniofac Res
September 2025
Department of Orthodontics, College of Dentistry, Kyung Hee University, Seoul, Republic of Korea.
Hyperdivergent skeletal Class II malocclusion is largely genetically determined and poses significant challenges in orthodontic treatment, particularly due to compromised facial aesthetics, reduced bite force and airway narrowing. Traditionally, orthognathic surgery has been the standard treatment for correcting such skeletal discrepancies. However, the advent of temporary skeletal anchorage devices (TSADs) has expanded the possibilities for orthodontic camouflage by allowing effective vertical control.
View Article and Find Full Text PDFZoolog Sci
August 2025
Marine Eco-Evo-Devo Unit, Okinawa Institute of Science and Technology Graduate University, Onna-son, Okinawa 904-0495, Japan,
Anemonefish have a characteristic vertical white barred color pattern on an orange background made by a specific distribution of three types of pigment cells: melanophores, xanthophores, and iridophores. This color pattern is an interesting alternative model to zebrafish to understand the cellular and molecular basis of complex color pattern formation. Using transmission electron microscopic observations, we have investigated the pigment cell composition in the skin of the anemonefish and found that: 1) white skin comprises iridophores and isolated melanophores; 2) orange skin contains xanthophores and scattered melanophores; and 3) black skin encompasses melanophores only.
View Article and Find Full Text PDFJ Environ Manage
September 2025
Qilian Alpine Ecology and Hydrology Research Station, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Northwest Institute of Eco- Environment and Resources, Chinese Academy of Sciences, Lanzhou, China; University of Chinese Academy of Sciences, Beijing, China. Electron
High-altitude and high-latitude ecosystems are among the most vulnerable to climate change and human disturbance, with widespread degradation threatening their role in water regulation, biodiversity conservation, and carbon sequestration. Livestock-exclusion enclosure is widely applied for alpine restoration, yet its ecological outcomes remain poorly understood across elevation gradients and ecosystem types. To address this, a 15-year grazing-exclusion experiment was conducted in a vertical transect spanning 2980-4164 m a.
View Article and Find Full Text PDFEnviron Manage
September 2025
College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, China.
With renewables, marine photovoltaic (PV) harnessing solar energy gains momentum, promising vast ocean space for power generation with significant benefits.Recent studies indicate that while marine PV systems are designed to address environmental challenges, they can also cause unintended ecological consequences. Mitigating potential negative impacts on aquatic environments has therefore become a critical research priority.
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