Labile, 'high-quality', plant litters are hypothesized to promote soil organic matter (SOM) stabilization in mineral soil fractions that are physicochemically protected from rapid mineralization. However, the effect of litter quality on SOM stabilization is inconsistent. High-quality litters, characterized by high N concentrations, low C/N ratios, and low phenol/lignin concentrations, are not consistently stabilized in SOM with greater efficiency than 'low-quality' litters characterized by low N concentrations, high C/N ratios, and high phenol/lignin concentrations. Here, we attempt to resolve these inconsistent results by developing a new conceptual model that links litter quality to the soil C saturation concept. Our model builds on the Microbial Efficiency-Matrix Stabilization framework (Cotrufo et al., 2013) by suggesting the effect of litter quality on SOM stabilization is modulated by the extent of soil C saturation such that high-quality litters are not always stabilized in SOM with greater efficiency than low-quality litters.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1111/gcb.12982 | DOI Listing |
Sci Total Environ
December 2024
Centro de Investigación Esquel de Montaña y Estepa Patagónica (CIEMEP; CONICET-UNPSJB), Roca 780, Esquel, Chubut CA 9200, Argentina; Facultad de Ciencias Naturales y Ciencias de la Salud, Universidad Nacional de la Patagonia San Juan Bosco, Esquel, Chubut CA 9200, Argentina. Electronic address:
Plastic pollution has garnered much more attention in marine environments, while scientific research on freshwater and terrestrial ecosystems has been relatively overlooked. Numerous studies worldwide have highlighted the presence of macroplastics (>2.5 cm) in mountain riverine environments, revealing that even these seemingly pristine ecosystems are not invulnerable to plastic contamination.
View Article and Find Full Text PDFAnimals (Basel)
December 2024
Department of Biological and Agricultural Engineering, North Carolina State University, Raleigh, NC 27695, USA.
The broiler industry is crucial for rural economies, but it faces challenges in enhancing animal performance and well-being, particularly due to heat stress and ammonia (NH) in grow-out houses. This study investigates the effectiveness of air velocity (AV) treatment in reducing heat stress and NH emissions while also improving litter conditions to enhance animal welfare. Conducted at the North Carolina State University's poultry engineering laboratory, the research used six identical controlled chambers, exposing broilers to High and Low AV treatments from 28 to 61 days across four flocks during the summers of 2017 and 2018.
View Article and Find Full Text PDFAnimals (Basel)
November 2024
Department of Veterinary and Biosciences, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium.
Platforms have been shown to be a suitable environmental enrichment for broiler chickens, accommodating their motivation to roost and rest at an elevated position. In order to increase the animal welfare benefits, we designed prototype elevated platforms with additional functionalities: a local cooling system, a sheltered area underneath the platform and collection trays underneath the platform that prevent manure from falling on the litter. This study assessed the effects of these multifunctional platforms during thermoneutral and heat stress conditions on two key determinants of their commercial uptake potential, namely production performance, carcass and meat quality.
View Article and Find Full Text PDFPoult Sci
November 2024
Department of Animal Breeding, Institute of Animal Sciences, Warsaw University of Life Sciences-SGGW, Poland. Electronic address:
The study evaluated the impact of relaxation music on the production performance, welfare, and blood parameters of broiler chickens. Literature indicates that specific music genres, as environmental enrichment, can improve animal welfare and production outcomes. The research involved 1,200 Ross 308 chickens divided into control (C) and experimental (M) groups.
View Article and Find Full Text PDFSci Total Environ
December 2024
Department of Mathematical and Computational Sciences, Physical Science and Earth Science, University of Messina, Messina, Italy; Institute for Chemical-Physical Processes, National Research Council of Italy (IPCF-CNR), Messina, Italy.
Plastic pollution in Special Protected Areas for Migratory Birds and Sites of Community Importance is a growing environmental concern. These areas, often designated to provide safe habitats for migratory bird species, are increasingly threatened by plastic litter. In this study, we conducted the first assessment of plastic litter, ranging from macro to microplastics, in beach sediments from two sites (Montorsoli Beach and Pylon Beach) along the coast of the Strait of Messina, a Special Protected Area, to assess beach quality and ecological risk.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!