Article
Ecology
Maud Queroue, Christophe Barbraud, Frederic Barraquand, Daniel Turek, Karine Delord, Nathan Pacoureau, Olivier Gimenez
Summary: Assessing the effects of climate and interspecific relationships on communities is challenging due to the need to integrate information across multiple biological levels. Research found that climate and predator-prey interactions impact skuas and petrels in different ways, with bottom-up mechanisms being the main drivers of this skua-petrel system.
ECOLOGICAL MONOGRAPHS
(2021)
Article
Mathematics, Applied
Arild Wikan, Orjan Kristensen
Summary: The study shows that the recruitment functions for both prey and predators belong to the Deriso-Schnute family, overcompensatory density dependence may lead to extinction of the prey population, and an increase in the fecundity of prey can cause chaotic oscillations. The impact of harvest on stabilizing dynamics depends on the degree of overcompensatory density dependence.
JOURNAL OF APPLIED MATHEMATICS AND COMPUTING
(2021)
Article
Physics, Multidisciplinary
Aytul Gokce
Summary: This paper investigates a predator-prey model incorporating Allee effect and intraspecific competition with fading memory. The study finds that the rate of past influence plays an important role in the dynamics of both species.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Article
Entomology
Joseph T. Neale, Steven A. Juliano
Summary: The predator treatment did not significantly affect the total number of adult survivors, but had a positive impact on female development rate and a composite index of performance. Sensitivity analyses showed that predation effects on the number of female adults produced was the largest contributing factor to significant treatment effects on the demographic index r'. Overall, predation released survivors from density-dependent effects and improved population performance.
ECOLOGICAL ENTOMOLOGY
(2021)
Article
Mathematics, Applied
Saheb Pal
Summary: The hydra effect, which refers to the increase of a species' mean density in response to greater mortality, has recently become an interesting research topic. This phenomenon is important to understand in the field of conservation biology and population management. The present paper investigates the presence of the hydra effect in two-species unstructured predator-dependent functional response models and finds that it is exhibited in the prey species when predators exhibit positive density-dependence and in the predator species when predators exhibit negative density-dependence.
DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS-SERIES B
(2023)
Article
Marine & Freshwater Biology
Paul E. Bourdeau, Steven A. Pothoven, Scott D. Peacor
Summary: This passage discusses the study of cannibalism in Bythotrephes cederstromii, demonstrating and quantifying the cannibalism rates through laboratory experiments. The results suggest that cannibalism could be an important food source during certain periods of the year and in particular places.
Article
Mathematics, Interdisciplinary Applications
Sara S. Alzaid, Ranbir Kumar, R. P. Chauhan, Sunil Kumar
Summary: The application of fractional calculus in biological mathematical models has advanced research in public health. This paper focuses on examining the dynamics of a predator-prey model using Caputo derivative and presents a new numerical technique based on Laguerre wavelets. The results are graphically compared with Lagrange polynomial interpolation.
FRACTALS-COMPLEX GEOMETRY PATTERNS AND SCALING IN NATURE AND SOCIETY
(2022)
Article
Multidisciplinary Sciences
Floor H. Soudijn, P. Daniel van Denderen, Mikko Heino, Ulf Dieckmann, Andre M. de Roos
Summary: The study shows that the impact of fishing for forage fish on piscivores depends on the fishing mortality of the piscivores. When the fishing mortality of piscivores is high, fishing for forage fish benefits the piscivores, but when fishing mortality of piscivores is low, overfishing of forage fish can lead to declines in piscivore biomass.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Physics, Multidisciplinary
O. Kayacan, M. Middendorf
Summary: The study investigates population dynamics of three species with cyclic predator-prey relations and artificial pheromone on a one-dimensional lattice, finding that the survival of three species depends on the pheromone evaporation rate. A phase transition occurs under certain conditions, leading to the extinction of two species and the survival of one species.
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
(2021)
Article
Ecology
Brian J. J. Smith, Daniel R. R. MacNulty, Daniel R. R. Stahler, Douglas W. W. Smith, Tal Avgar
Summary: While the impact of density dependence on temporal changes in population abundance is well understood, little is known about its effects on spatial variation in abundance. This study investigated how spatial trade-offs between food and safety influenced population distribution in northern Yellowstone elk over a four-decade period. The results revealed a shift in habitat selection from food to safety as elk density decreased, highlighting the importance of population density in driving landscape-level shifts in distribution and potentially affecting community-level interactions.
Article
Ecology
Johannes Cairns, Alexandre Jousset, Lutz Becks, Teppo Hiltunen
Summary: Mutation supply can influence evolutionary and ecological dynamics by affecting population size and species interactions, particularly when population size is constrained by external conditions. Controlled experiments show that higher mutation supply enables faster adaptation to low-resource environments and anti-predatory defense mechanisms, leading to increased population size and better access to high-recurrence mutational targets.
Article
Mathematics, Interdisciplinary Applications
Rong Liu, Guirong Liu
Summary: This paper proves the existence of a unique global positive solution in a stochastic two-patch predator-prey model with ratio-dependent functional responses through the stochastic comparison theorem. It discusses the long-time properties of the solutions pathwise using two different methods and obtains sufficient conditions for extinction and persistence in mean. The results also include discussions on stochastic persistence and the existence of an ergodic stationary distribution, with applications to special models and numerical simulations to support the main results.
Article
Mathematics, Applied
Sainan Wu
Summary: This paper considers a reaction-diffusion predator-prey model with indirect prey-taxis and predator-taxis. The model obtains globally bounded solutions under different parameters and conditions.
JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS
(2022)
Article
Fisheries
Koji Miyoshi, Susumu Chiba
Summary: The study showed that increasing the size of scallops and reducing air exposure time can significantly improve scallop survival in the presence of sea stars. To reduce predation by Distolasterias nipon, it is recommended to release smaller quantities of large-sized scallops. Increasing scallop density has a positive impact on survival in the presence of Asterias amurensis.
AQUACULTURE INTERNATIONAL
(2022)
Article
Mathematical & Computational Biology
Pan Zheng
Summary: This paper deals with a two-species competitive predator-prey system with density-dependent diffusion, and rigorously proves the global boundedness of the model. Moreover, in some particular cases, the asymptotic stabilization and precise convergence rates of globally bounded solutions are established.
MATHEMATICAL BIOSCIENCES AND ENGINEERING
(2022)
Article
Marine & Freshwater Biology
Helene Labach, Caroline Azzinari, Maxime Barbier, Cathy Cesarini, Boris Daniel, Lea David, Frank Dhermain, Nathalie Di-Meglio, Benjamin Guichard, Julie Jourdan, Nicolas Robert, Marine Roul, Nicolas Tomasi, Olivier Gimenez, Valentin Lauret
Summary: The study revealed a lack of information on the structure and dynamics of the common bottlenose dolphin subpopulation in French Mediterranean waters. By collecting photo-identification data, the population size of this dolphin species was estimated and used to support the establishment of a new protected area in the Gulf of Lion.
MARINE MAMMAL SCIENCE
(2022)
Article
Zoology
Ghais Zriki, Rumsais Blatrix, Dominique J. Bicout, Olivier Gimenez, Anne-Sophie Soulie, Liza Dadu, David Degueldre, Geoffrey Chiron, Nathalie Sleeckx, Lise Roy
Summary: The study found that predatory mites commonly found in henhouses are not able to effectively regulate the major egg industry pest mite, likely due to prey switching to alternative prey which dilutes the effect of predation. Further exploration is needed to enhance the top-down regulation effect.
JOURNAL OF EXPERIMENTAL ZOOLOGY PART A-ECOLOGICAL AND INTEGRATIVE PHYSIOLOGY
(2021)
Article
Ecology
Juliette Archambeau, Marta Benito Garzon, Frederic Barraquand, Marina de Miguel, Christophe Plomion, Santiago C. Gonzalez-Martinez
Summary: By incorporating both climatic and genomic data, this study aimed to predict height growth variation of maritime pine at different geographical scales. Plastic and genetic components play different roles in height growth variation, with models combining climate of origin, gene pool, and height-associated positive-effect alleles (PEAs) showing better predictive ability for new provenances.
AMERICAN NATURALIST
(2022)
Article
Biodiversity Conservation
Oksana Grente, Thibault Saubusse, Olivier Gimenez, Eric Marboutin, Christophe Duchamp
Summary: This study focused on the hotspots of wolf depredation on sheep in France and found that the omission of livestock availability in previous analyses led to flawed inference about the depredation pattern and resulted in the identification of numerous unidentified hotspots. The methodology used in this study provides reliable information for managers to understand the depredation pattern and allocate resources.
BIOLOGICAL CONSERVATION
(2022)
Article
Biology
Coralie Picoche, Frederic Barraquand
Summary: Seed formation is an important part of the reproductive cycle and can contribute to the maintenance of biodiversity. This study examines the role of seed banks in phytoplankton communities and finds that they can help sustain species coexistence and facilitate the reseeding of coastal and oceanic regions. The presence of seed banks also enables populations to tolerate stronger interactions within the community and cope with environmental changes.
JOURNAL OF THEORETICAL BIOLOGY
(2022)
Article
Ecology
Frederic Barraquand, Coralie Picoche, Christelle Aluome, Laure Carassou, Claude Feigne
Summary: Compensatory dynamics, where community composition shifts despite a near-constant total community size, are usually rare in natural communities. This study extended the analysis of community-level synchrony to wetland birds and found that abundance and biomass compensation were rare, likely due to the synchronizing influence of climate on birds. The rare cases where compensation appeared consistently were between rather than within functional groups.
ECOLOGY AND EVOLUTION
(2022)
Article
Biodiversity Conservation
S. Adamantopoulou, A. A. Karamanlidis, P. Dendrinos, O. Gimenez
Summary: This study developed a methodological approach to monitor the presence of the endangered Mediterranean monk seal using 20 years of citizen science data. The results show a significant range recovery of the species in Greece over the last two decades.
ANIMAL CONSERVATION
(2023)
Article
Biodiversity Conservation
V Lauret, H. Labach, D. Turek, S. Laran, O. Gimenez
Summary: Large-scale ecological projects require integration of multiple data sources. Spatial integrated models can quantify population dynamics. This study used bottlenose dolphins in the Mediterranean as a case study, combining boat surveys and aerial line transect data to estimate abundance and density. Output from the integrated spatial model provided important information for assessing the ecological status of bottlenose dolphins in the French Mediterranean Sea.
ANIMAL CONSERVATION
(2023)
Article
Marine & Freshwater Biology
Celine Tardy, Denis Ody, Olivier Gimenez, Serge Planes
Summary: The Mediterranean fin whale population is separate from the Atlantic population. A study used capture-recapture methods and identified 546 fin whales in the north-western Mediterranean between 2008 and 2019. The genetic approach provided the most accurate abundance estimates and showed relative stability over time. This information should be considered for future conservation actions.
MARINE ECOLOGY-AN EVOLUTIONARY PERSPECTIVE
(2023)
Article
Biology
Gael Bardon, Frederic Barraquand
Summary: We studied structured competition models that allow life history parameters to depend on adult or juvenile population densities. We found that stage structure can promote coexistence, but this mechanism is not common in diverse ecosystems with multiple species.
BULLETIN OF MATHEMATICAL BIOLOGY
(2023)
Article
Ecology
Juliette Archambeau, Marta Benito Garzon, Marina de Miguel, Benjamin Brachi, Frederic Barraquand, Santiago C. Gonzalez-Martinez
Summary: This study empirically tested the effects of environmental selection and population admixture on genetic variation in maritime pine populations. The results showed that populations experiencing colder winters had lower genetic variation for early height growth, while within-population genetic variation was not influenced by environmental heterogeneity or admixture. These findings provide insights into the adaptive potential of populations to changing environments.
Article
Ecology
Matthew J. Silk, Olivier Gimenez
Summary: Social networks and population dynamics are connected; interaction is driven by population density and demographic structure, and social relationships can impact survival and reproductive success. However, challenges in integrating demographic and network analysis models have limited research in this area. We introduce the R package genNetDem that can simulate integrated network-demographic datasets, allowing for methodological research and testing of network effects on survival.
ECOLOGY AND EVOLUTION
(2023)
Article
Biodiversity Conservation
Jaume Forcada, Joseph I. Hoffman, Olivier Gimenez, Iain J. Staniland, Pete Bucktrout, Andrew G. Wood
Summary: This study focuses on the recovery trajectory of the Antarctic fur seal and highlights the reasons and factors influencing its population growth, discussing the impacts of environmental change and anthropogenic pressures on this species.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Biology
Frederic Barraquand
Summary: The classic Rosenzweig-MacArthur predator-prey model exhibits sensitivity to model structure, resulting in different community dynamics depending on the mathematical expressions used. However, this sensitivity seems to be specific to ordinary differential equations (ODEs) or stochastic systems with weak noise, as stochastic differential equations (SDEs) with strong environmental noise produce similar fluctuation patterns regardless of the mathematical formula. The eigenvalues of linearized predator-prey models can be used to analyze structural sensitivity, but their magnitude and presence of imaginary parts are not sensitive, suggesting noise-driven oscillations for a wide range of carrying capacities.
JOURNAL OF THEORETICAL BIOLOGY
(2023)
Article
Ecology
Valentin Lauret, Helene Labach, Lea David, Matthieu Authier, Olivier Gimenez
Summary: This study used an integrated multispecies occupancy model to investigate the spatial co-occurrence between bottlenose dolphins and fishing trawlers in the Mediterranean Sea. The integrated model produced more precise estimates compared to single-dataset models. This research is important for understanding interactions between human activities and marine mammals at large spatial scales.
Article
Ecology
Florian Lecorvaisier, Dominique Pontier, Benoit Soubeyrand, David Fouchet
Summary: Research has found that the use of vaccines that do not entirely block pathogen transmission may lead to the evolution of more virulent strains. High vaccine coverage favors the emergence and prevalence of avirulent strains, and competition between strains is crucial for the eradication of toxigenic strains when these vaccines are used.
ECOLOGICAL MODELLING
(2024)
Article
Ecology
Monica E. Barros, Ana Arriagada, Hugo Arancibia, Sergio Neira
Summary: The stock biomass of carrot prawn in the south-central area of Chile has decreased in the past 12 years, mainly due to fishing mortality. Predation mortality has been less studied and quantified, so it is important to estimate and compare predation and fishing mortality to understand their effects on fishing stocks. A food web model was built to analyze the biomass changes and evaluate the relative contribution of different mortality factors. The results showed that predation mortality was the main component of total mortality for carrot prawns and yellow prawns.
ECOLOGICAL MODELLING
(2024)
Article
Ecology
Shubham Krishna, Victoria Peterson, Luisa Listmann, Jana Hinners
Summary: This study incorporated viral dynamics into an ecosystem model to investigate the effects of viruses on ecosystem dynamics under current and future climatic conditions. The results showed that the presence of viruses increased nutrient retention in the upper water column, leading to a reduction in phytoplankton biomass and transfer of biomass to higher trophic levels.
ECOLOGICAL MODELLING
(2024)
Article
Ecology
Zahra Dehghan Manshadi, Parastoo Parivar, Ahad Sotoudeh, Ali Morovati Sharifabadi
Summary: This study demonstrates the importance of strategies such as limiting built-up areas, preserving green spaces, and protecting water resources on the urban carrying capacity in arid and semi-arid regions. Implementing a combination of policies aimed at enhancing urban green spaces and regulating water demand is found to be the most effective in terms of health and urban carrying capacity.
ECOLOGICAL MODELLING
(2024)
Article
Ecology
Shay S. Keretz, Daelyn A. Woolnough, Todd J. Morris, Edward F. Roseman, David T. Zanatta
Summary: This study surveyed native freshwater mussels in the St. Clair-Detroit River system and found 14 live unionids representing 9 species. However, the model used to predict their presence in the main channels was not successful. The study also revealed characteristic differences between the St. Clair and Detroit Rivers.
ECOLOGICAL MODELLING
(2024)
Article
Ecology
Zhengrong Zhang, Xuemei Li, Xinyu Liu, Kaixin Zhao
Summary: This study examines land use change in the Chinese Tianshan mountainous region using system dynamics and patch-generating land use simulation models. The results show an expansion in forest and construction land, a decline in grassland area, and an increase in cultivated land area from 2005 to 2020. By 2040, unused land, grassland, and water are expected to decrease while other land types increase, with construction land showing the most significant increase. The study provides insights for future ecological and environmental management in the region.
ECOLOGICAL MODELLING
(2024)
Article
Ecology
Amira Khelifa, Nadjia El Saadi
Summary: This paper develops an agent-based model to study malaria disease transmission, taking into account the interactions between hosts, vectors, and aquatic habitats, as well as their geographical locations. The simulation results highlight the significant role of aquatic habitats in infection transmission and disease persistence, and demonstrate the effectiveness of eliminating these habitats in limiting disease transmission.
ECOLOGICAL MODELLING
(2024)
Article
Ecology
Guillaume Peron
Summary: The theory for movement-based coexistence between species often overlooks small-scale, station-keeping movements. However, at this scale, there are many instances where positive correlations exist between species traits that are expected to be negatively correlated based on current theory. Through simulations, the researcher presents a counter-example to demonstrate that functional tradeoffs are not a necessary condition for movement-based coexistence. This study highlights the significance of species-specific space use patterns under the time allocation tradeoff hypothesis.
ECOLOGICAL MODELLING
(2024)
Article
Ecology
Sandra Y. Mendiola, Nicole M. Gerardo, David J. Civitello
Summary: Research on the use of insect microbial symbionts as a means of controlling the spread of insect vectors and the pathogens they carry has made significant progress in the last decade. This study focused on the relative importance of simultaneous effects caused by a symbiont called Caballeronia spp. on the ability of squash bugs to transmit phytopathogenic Serratia marcescens. The researchers found that infection with Caballeronia significantly reduced pathogen titers and cleared S. marcescens in bugs, thus reducing the vectoring potential of these pests. The study also showed that maximizing symbiont prevalence in the vector population is crucial for effectively mitigating plant infections.
ECOLOGICAL MODELLING
(2024)
Article
Ecology
Shirui Hao, Dongryeol Ryu, Andrew W. Western, Eileen Perry, Heye Bogena, Harrie Jan Hendricks Franssen
Summary: This study investigates the sensitivity of model yield prediction to uncertainties in model parameters and inputs using the Sobol' method. The results show that yield is more sensitive to changes in water availability and nitrogen availability, depending on soil, management, and weather conditions.
ECOLOGICAL MODELLING
(2024)
Article
Ecology
Nitika Mundetia, Devesh Sharma, Aditya Sharma
Summary: This study focused on assessing groundwater sustainability using different modeling approaches in a river basin in Rajasthan, India. The results showed a decrease in future groundwater recharge and emphasized the need for better management and conservation practices to achieve sustainable development goals.
ECOLOGICAL MODELLING
(2024)
Article
Ecology
Sukdev Biswas, Sk Golam Mortoja, Ritesh Kumar Bera, Sabyasachi Bhattacharya
Summary: Bacteria play a crucial role in regulating the nutrient cycle of ecosystems, and maintaining a thriving bacterial population is essential for the sustainability of these environments. This study introduces the concept of cooperation as a group defense mechanism employed by bacteria and incorporates it into the functional response, offering a more comprehensive understanding of the complex tritrophic food chain dynamics. The results highlight the importance of a balance between strong group defense and moderate cooperation for bacteria sustainability and overall system stability.
ECOLOGICAL MODELLING
(2024)
Article
Ecology
D. Z. M. Le Gouvello, S. Heye, L. R. Harris, J. Temple-Boyer, P. Gaspar, M. G. Hart-Davis, C. Louro, R. Nel
Summary: This study modeled the dispersal pathways and compared potential dispersal corridors of different sea turtle species in the Western Indian Ocean. The results showed that ocean currents play a major role in driving dispersal, with species and years exhibiting differences in dispersal patterns. Active swimming had little influence on dispersal during the first year.
ECOLOGICAL MODELLING
(2024)
Review
Ecology
Yingying Duan, Haina Rong, Gexiang Zhang, Sergey Gorbachev, Dunwu Qi, Luis Valencia-Cabrera, Mario J. Perez-Jimenez
Summary: Computing models are an effective way to study population dynamics of endangered species like giant pandas. This paper proposes a unified framework and conducts a comprehensive survey of computing models for giant panda ecosystems. Multi-factor computing models are more suitable for studying giant panda ecosystems.
ECOLOGICAL MODELLING
(2024)
Article
Ecology
Samantha Lai, Theophilus Zhi En Teo, Arief Rullyanto, Jeffery Low, Karenne Tun, Peter A. Todd, Siti Maryam Yaakub
Summary: Understanding the exchange of genetic material among populations in the marine environment is crucial for conservation efforts. Agent-based models are increasingly used to predict dispersal pathways, including for seagrasses. This study highlights the importance of considering both sexual propagules and asexual vegetative fragments when evaluating seagrass connectivity.
ECOLOGICAL MODELLING
(2024)