Article
Biology
Yunfeng Geng, Frithjof Lutscher
Summary: Many species are annual breeders who consume resources and may die between reproductive events. A model for such life cycles needs to represent both the discrete- and continuous-time processes in the community. The dynamics of multiple discrete breeders on a single resource reveal coexistence mechanisms and complex dynamics.
JOURNAL OF MATHEMATICAL BIOLOGY
(2021)
Article
Agriculture, Multidisciplinary
Miguel Ibanez-Alvarez, Elena Baraza, Emmanuel Serrano, Antonia Romero-Munar, Carles Cardona, Jordi Bartolome, Jennifer Adams Krumins
Summary: Shifts in animal husbandry and landscape use have significantly affected ungulate grazing effects on ecosystem functioning. However, studies on plant and soil communities yield varied and context-dependent results.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2022)
Article
Plant Sciences
Neha Mohanbabu, Mark E. Ritchie
Summary: Herbivore impact on plant biomass is controlled by plant quality, specifically plant phosphorus (P) content, rather than plant nitrogen (N) content. This study suggests that phosphorus, in addition to water and nitrogen, plays a more important role in driving trophic interactions in terrestrial systems than previously realized.
JOURNAL OF ECOLOGY
(2022)
Article
Ecology
Leonardo Pacciani-Mori, Samir Suweis, Amos Maritan, Andrea Giometto
Summary: Microbial communities are crucial for natural processes and are closely linked to species metabolism. Researchers are reevaluating consumer-resource models to better understand the dynamics of microbial communities. The study explores proteome allocation in relation to microbial growth and aims to determine conditions for species coexistence in systems with multiple resources.
Article
Ecology
Jamila S. Roth, Todd Z. Osborne, Laura K. Reynolds
Summary: The impacts of multiple stressors on ecological systems are difficult to predict but crucial to understand. This study explores the effects of warming temperatures and grazing pressure on seagrass ecosystems in the Gulf of Mexico. The results show that warming temperatures negatively affect seagrass tolerance and resistance traits, reducing biomass, productivity, shoot density, and the number of leaves per plant. Grazing by turtle, parrotfish, and urchin has significant impacts on plant traits, potentially reducing resilience and increasing palatability. These stressors interact additively for most response variables, but non-additively for a few, suggesting that water temperature may play a role in driving these interactions. Overall, increased temperatures and grazing pressure are likely to have negative consequences for seagrass cover, associated species, and ecosystem services.
Article
Mathematics
Zhenzhen Li, Binxiang Dai, Yuming Chen
Summary: This study investigates the evolutionary impact of temporal periodicity and spatial heterogeneity on population ecology. By analyzing the dynamics of a competition-diffusion system with different interspecific competition coefficients, the study provides conditions for the interplay between diffusion intensities, interspecific competition coefficients, and their effects on coexistence and competitive exclusion.
JOURNAL OF DIFFERENTIAL EQUATIONS
(2023)
Article
Mathematics, Applied
Juping Ji, Hao Wang
Summary: This study incorporates stoichiometry into a chemostat culture model and examines the dynamics and competition results of single and multiple algae species. The results show that increased phosphorus input or slower dilution rate promotes the persistence of algae species, while stoichiometry facilitates coexistence of competing algae species. The study concludes that under low phosphorus input or fast dilution rate, competitive exclusion still occurs, but high phosphorus input or slow dilution rate enables the coexistence of multiple species.
JOURNAL OF DYNAMICS AND DIFFERENTIAL EQUATIONS
(2022)
Article
Mathematics, Applied
Xiaoyan Wang, Junyuan Yang, Xiaofeng Luo
Summary: Genetic heterogeneity plays a crucial role in the interaction of microorganisms, and the competitive exclusion principle is the main governing principle for disease competition. This paper studies the dynamics of a two-strain SIS epidemic model on complex networks and derives the reproduction numbers associated with each strain. It is proven that the competitive exclusion principle holds globally and the endemic equilibrium uniquely and globally coexists.
JOURNAL OF APPLIED MATHEMATICS AND COMPUTING
(2022)
Article
Biodiversity Conservation
Xiliang Li, Guochen Kenny Png, Yuanheng Li, Saheed Olaide Jimoh, Yong Ding, Fang Li, Shixian Sun
Summary: The study demonstrates that leaf plasticity can serve as an indicator of plants' defense against grazing; different plant species show varying responses in leaf angle during grazing; changes in leaf plasticity are influenced by historical grazing and current foraging activities.
ECOLOGICAL INDICATORS
(2021)
Article
Environmental Sciences
Chunping Zhang, Yongchao Zhang, Yan Qin, Decao Niu, Hua Fu, James J. Elser
Summary: A litter decomposition experiment was conducted on 21 plant species in an alpine meadow, revealing that plants with higher nutrient use efficiencies had a lower litter decomposition rate. Lower decomposition rates were correlated with higher plant importance values, and this correlation became stronger over time in plant communities following grazing exclusion, except for dominant species. These findings indicate that litter decomposability can be used as an indicator to predict the changing trajectories of plant communities after grazing exclusion, except for dominant species.
LAND DEGRADATION & DEVELOPMENT
(2023)
Article
Biodiversity Conservation
Yacine Kouba, Saifi Merdas, Tewfik Mostephaoui, Badreddine Saadali, Haroun Chenchouni
Summary: In arid steppes, short-term grazing exclusion during severe drought conditions leads to the appearance of increasers, colonizers, and native indicator plant species. It also increases the size of the regional species pool and improves both incidence-based and abundance-based alpha-diversity. Additionally, grazing exclusion decreases abundance-based beta-diversity at local scale but increases it at landscape scale, while incidence-based beta-diversity significantly decreases at landscape scale.
ECOLOGICAL INDICATORS
(2021)
Article
Plant Sciences
Tianyu Zhan, Wenwu Zhao, Siyuan Feng, Ting Hua
Summary: This study explored the effects of grazing exclusion duration on vegetation restoration in alpine meadows and alpine steppes through a meta-analysis. The results showed that short-term grazing exclusion significantly increased aboveground biomass in alpine meadows, while medium-term grazing exclusion significantly increased aboveground biomass in alpine steppes. For belowground biomass, medium-term grazing exclusion was effective in alpine meadows, while short-term grazing exclusion was effective in alpine steppes. Long-term grazing exclusion had a significant positive effect on belowground biomass in both alpine meadows and alpine steppes. The effectiveness and efficiency of vegetation restoration gradually decreased with increasing grazing exclusion duration. Precipitation had a significant positive impact on plant productivity restoration. Therefore, medium-term grazing exclusion is recommended for vegetation restoration in alpine meadows and alpine steppes.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Environmental Sciences
Shan Jiang, Jinghui Zhang, Yiwei Tang, Zhiyong Li, Huamin Liu, Lixin Wang, Yantao Wu, Cunzhu Liang
Summary: Plant functional traits provide insights into the response of plant communities and ecosystems to disturbances. This study examined the impact of grazing on aboveground biomass (AGB), community-weighted mean (CWM) traits, species diversity, and functional diversity (FD) in a Mongolian Plateau desert steppe. Results showed that grazing increased CWM dry matter content and carbon-to-nitrogen ratio while decreasing CWM height, specific leaf area (SLA), and nitrogen and phosphorus contents. AGB decreased, but species diversity and FD increased under grazing treatments. Additionally, plant traits and biodiversity predicted the response of AGB to grazing, with patches dominated by species with 'acquisitive' foliage and higher biodiversity showing higher grazing impact. The study highlights the importance of considering plant traits and biodiversity in understanding the effects of grazing on ecosystem dynamics.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Plant Sciences
Qingqing Chen, Jan P. Bakker, Juan Alberti, Elisabeth S. Bakker, Christian Smit, Han Olff
Summary: Late season mowing may not be sustainable for conserving plant diversity in salt marshes, while other management regimes can maintain plant diversity across spatial scales and vegetation heterogeneity at the larger scale in the long term. However, local community composition may change over time under these regimes.
JOURNAL OF ECOLOGY
(2021)
Article
Ecology
Zijie Wang, Hanwen Deng, Fangdong Li, Yanlin Sun, Soonkwan Hong
Summary: Grazing exclusion is an effective grassland restoration strategy, as it optimizes the soil bacterial structure and increases soil bacterial diversity. This study found that grazing exclusion significantly increased the abundance of beneficial bacteria involved in nutrient cycling, while decreasing the abundance of pathogenic bacteria. Grazing exclusion also positively correlated with vegetation biomass and diversity, as well as soil nutrient content.
JOURNAL OF ARID ENVIRONMENTS
(2023)
Article
Biodiversity Conservation
Nyamsuren Batsaikhan, Bayarbaatar Buuveibaatar, Bazaar Chimed, Oidov Enkhtuya, Davaa Galbrakh, Oyunsaikhan Ganbaatar, Badamjav Lkhagvasuren, Dejid Nandintsetseg, Joel Berger, Justin M. Calabrese, Ann E. Edwards, William F. Fagan, Todd K. Fuller, Michael Heiner, Takehiko Y. Ito, Petra Kaczensky, Peter Leimgruber, Anna Lushchekina, E. J. Milner-Gulland, Thomas Mueller, Martyn G. Murray, Kirk A. Olson, Richard Reading, George B. Schaller, Annagret Stubbe, Michael Stubbe, Chris Walzer, Henrik Von Wehrden, Tony Whitten
CONSERVATION BIOLOGY
(2014)
Article
Ecology
Kirk A. Olson, Todd K. Fuller, Thomas Mueller, Martyn G. Murray, Craig Nicolson, Daria Odonkhuu, Sanjaa Bolortsetseg, George B. Schaller
JOURNAL OF ARID ENVIRONMENTS
(2010)
Article
Ecology
Kirk A. Olson, Martyn G. Murray, Todd K. Fuller
RANGELAND ECOLOGY & MANAGEMENT
(2010)
Article
Biodiversity Conservation
Martyn Murray
BIOLOGICAL CONSERVATION
(2017)
Letter
Multidisciplinary Sciences
MG Murray, JA Yelland
Article
Biodiversity Conservation
KA Olson, TK Fuller, GB Schaller, D Odonkhuu, MG Murray
Letter
Multidisciplinary Sciences
M Murray
Article
Multidisciplinary Sciences
SA West, MG Murray, CA Machado, AS Griffin, EA Herre
Article
Ecology
MG Murray, AW Illius