Article
Physics, Multidisciplinary
Sourav Kumar Sasmal, Anshu, Balram Dubey
Summary: This study explores the impact of cooperation on ecological systems, analyzing the effects of hunting cooperation among predators and fear-induced birth reduction in prey population using mathematical models. Various stability and bifurcation scenarios are studied, along with the conditions for Turing instability in a spatially extended system. Numerical simulations validate the analytical results for both spatial and non-spatial models.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Article
Ecology
Harry B. M. Wells, Ramiro D. Crego, Jackson Ekadeli, Mathew Namoni, Duncan M. Kimuyu, Wilfred O. Odadi, Lauren M. Porensky, Andrew J. Dougill, Lindsay C. Stringer, Truman P. Young
Summary: High stocking rates of cattle have negative effects on wild mesoherbivore habitat use and cattle foraging efficiency, while reducing stocking rates to moderate levels can benefit zebra habitat use and cattle foraging efficiency.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2022)
Article
Biochemistry & Molecular Biology
Ciro Cabal, Ricardo Martinez-Garcia, Aurora de Castro, Fernando Valladares, Stephen W. Pacala
Summary: The paper explores avenues to develop the theory of Exploitative Segregation of Plant Roots (ESPR), including topics such as single plant responses to soil heterogeneity, variability in plant responses under uneven competition scenarios, the importance of root functional traits in predicting root foraging behavior, and potential model extensions.
PLANT SIGNALING & BEHAVIOR
(2021)
Article
Agriculture, Dairy & Animal Science
Pawel Ciesluk, Maciej Cmoch, Zbigniew Kasprzykowski
Summary: Birds wintering in the northern Palearctic adjust their foraging behavior in response to energy losses and food deficit by considering weather conditions and interspecific competition. A study on two sympatrically wintering raptor species, the Common Buzzard and the Rough-legged Buzzard, showed interspecific differences in the use of hunting sites, with the latter avoiding fence posts and spending more time on the ground. The study also revealed that thicker snow cover resulted in fewer attempted attacks on prey and less frequent changes in hunting sites for Common Buzzards.
Article
Biodiversity Conservation
Svenja Baensch, Teja Tscharntke, Doreen Gabriel, Catrin Westphal
Summary: The study found that the availability of oilseed rape has contrasting effects on social bees and solitary bees in strawberry fields. An increase in bee abundance enhances strawberry fruit weight and quality, but depends on flower order and variety. Wild bees, especially solitary species, should be conserved and promoted for stable crop pollination services in dynamic agricultural landscapes.
JOURNAL OF APPLIED ECOLOGY
(2021)
Article
Environmental Sciences
Lucas Bonnin, Christophe Lett, Laurent Dagorn, John David Filmalter, Fabien Forget, Philippe Verley, Manuela Capello
Summary: This study estimated the percentage of time that juvenile silky sharks spend unassociated with floating objects using a novel methodology, revealing that they are unassociated with FADs for at least 30% of their time. The results have implications for understanding the impact of increasing FAD densities in the Indian Ocean.
AQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS
(2021)
Article
Marine & Freshwater Biology
M. Soria, Y. Tremblay, A. Blaison, F. Forget, E. Crochelet, L. Dagorn
Summary: The study shows that the number of bull shark bites has increased significantly at Reunion Island since 2011. By double-tagging and tracking male and female bull sharks, researchers found that the sharks mainly stayed close to shore, with different patterns of movements between the sexes.
AFRICAN JOURNAL OF MARINE SCIENCE
(2021)
Article
Biodiversity Conservation
Taha Imzilen, Christophe Lett, Emmanuel Chassot, David M. Kaplan
Summary: The study analyzed dFAD trajectories in the Indian Ocean and Atlantic Ocean, finding that prohibiting deployments in specific areas can significantly reduce dFAD beaching events. The riskiest areas for beaching are not necessarily where dFAD deployment is highest, suggesting closures could have minimal impact on fisheries.
BIOLOGICAL CONSERVATION
(2021)
Article
Marine & Freshwater Biology
Bernardino S. Malauene, Christophe Lett, Francis Marsac, Michael J. Roberts, Atanasio Brito, Silvia Abdula, Coleen L. Moloney
Summary: The study identified three distinct spawning areas for Penaeus indicus and Metapenaeus monoceros in the Sofala Bank, Mozambique, adjacent to river mouths. The spawning areas of the two species had different spatial extents and persistence levels, with seasonal and depth-related variability in catch rates observed. The findings provide valuable information for future management strategies and spatial planning.
ESTUARINE COASTAL AND SHELF SCIENCE
(2021)
Article
Ecology
Florian Orgeret, Andrea Thiebault, Kit M. Kovacs, Christian Lydersen, Mark A. Hindell, Sarah Ann Thompson, William J. Sydeman, Pierre A. Pistorius
Summary: Understanding the impacts of climate change on marine predators is crucial for biodiversity conservation. Longer study durations were associated with higher likelihood of concluding climate change impacts, with varying temporal thresholds for discernible effects. Species with narrow thermal ranges and longer generation times were more likely to be affected by climate change, highlighting the need for region-specific assessments.
Article
Ecology
Susana Cardenas-Alayza, Daniel A. Torres, Dimitri Gutierrez, Yann Tremblay
Article
Fisheries
Isla MacMillan, Martin J. Attrill, Taha Imzilen, Christophe Lett, Simon Walmsley, Clarus Chu, David M. Kaplan
Summary: This study assessed beaching events of drifting Fish Aggregating Devices (dFADs) in the Seychelles Archipelago using trajectory data from French purse seiners. The results revealed that beachings occurred most frequently during the winter monsoon and in shallow waters nearshore and offshore. The benthic habitat Coral/Algae had the highest beaching rate, emphasizing the need for conservation efforts. The findings contribute to the development of mitigation and prevention methods for reducing marine debris and environmental disturbances.
ICES JOURNAL OF MARINE SCIENCE
(2022)
Article
Green & Sustainable Science & Technology
Taha Imzilen, Christophe Lett, Emmanuel Chassot, Alexandra Maufroy, Michel Goujon, David M. Kaplan
Summary: Tropical tuna purse-seine fishing vessels contribute to the problem of abandoned, lost or discarded fishing equipment by deploying large numbers of drifting Fish Aggregating Devices (dFADs). Research findings show that over 40% of these devices ultimately drift away from fishing grounds, with about 20% passing major ports. The study also identifies specific areas within the fishing grounds where most devices exit.
NATURE SUSTAINABILITY
(2022)
Article
Biodiversity Conservation
Stephen D. Holness, Linda R. Harris, Russell Chalmers, Deidre De Vos, Victoria Goodall, Hannah Truter, Ane Oosthuizen, Anthony T. F. Bernard, Paul D. Cowley, Charlene da Silva, Matthew Dicken, Lloyd Edwards, Gordon Marchand, Paul Martin, Taryn S. Murray, Matthew C. Parkinson, Paula Pattrick, Lorien Pichegru, Pierre Pistorius, Warwick H. H. Sauer, Malcolme Smale, Andrea Thiebault, Amanda T. Lombard
Summary: This article discusses the application of systematic conservation planning in marine spatial planning, aiming to streamline negotiations and promote collaboration among multiple sectors. Using the case study of Algoa Bay in South Africa, the success in meeting the priority of intact biodiversity among different sectors was demonstrated through a collaborative community practice approach.
BIOLOGICAL CONSERVATION
(2022)
Article
Environmental Sciences
Lorien Pichegru, Laetitia Vibert, Andrea Thiebault, Isabelle Charrier, Nicky Stander, Katta Ludynia, Melissa Lewis, Tegan Carpenter-Kling, Alistair McInnes
Summary: The rapid increase in seaborn trade since the 1990s has led to an increase in vessel-derived noise pollution. A recent study in Algoa Bay, South Africa, a marine biodiversity hotspot, shows that ship-to-ship bunkering operations initiated in 2016 have significantly increased underwater noise levels, leading to a drastic decline in African penguin numbers since then.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Witold Podlejski, Jacques Descloitres, Cristele Chevalier, Audrey Minghelli, Christophe Lett, Leo Berline
Summary: This study demonstrates the use of a machine learning model based on spatial features to filter out false detections in remote sensing data of pelagic Sargassum algae. The model achieves a high accuracy in identifying false detections and reduces the detected Sargassum pixels by approximately 50%. The resulting distribution data is consistent with seasonal and inter-annual fluctuations observed in previous studies. This methodology is valuable in understanding the dynamics of Sargassum algae and can be applied to other datasets containing erroneous detections.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Witold Podlejski, David Nerini, Andrea Doglioli, Christophe Lett
Summary: Massive Sargassum stranding events have unpredictable impacts on many countries from the Gulf of Guinea to the Gulf of Mexico. This study evaluates the influence of currents and wind on Sargassum drift, using satellite data and reference measurements. The results show the significant contribution of wind and a deflection angle between Sargassum drift and wind directions, while currents play a less important role. These findings improve our understanding of Sargassum dynamics and aid in the prediction of stranding events.
MARINE POLLUTION BULLETIN
(2023)
Article
Fisheries
Taha Imzilen, David M. Kaplan, Nicolas Barrier, Christophe Lett
Summary: This study used a Lagrangian particle-tracking model to simulate the drift of drifting fish aggregating devices (dFADs) in the Atlantic and Indian Oceans. The simulations showed that using the ocean model output (GLORYS12V1) provided more accurate results compared to satellite-derived ocean currents products (OSCAR and GEKCO). The study also found that the predictive ability of the model was higher for individual dFAD movements in the Indian Ocean than in the Atlantic Ocean.
FISHERIES RESEARCH
(2023)
Review
Oceanography
Jorge Flores-Valiente, Christophe Lett, Francois Colas, Laure Pecquerie, Arturo Aguirre-Velarde, Fanny Rioual, Jorge Tam, Arnaud Bertrand, Patricia Ayon, Saidou Sall, Nicolas Barrier, Timothee Brochier
Summary: In the northern Humboldt Current system (NHCS), the impact of environment on the early-life stages of Peruvian anchovy remains challenging. Climate variability modulates currents velocity, temperature and food availability, affecting early-life stages drift, growth and survival. To investigate these impacts, an individual-based model including larval retention processes and a Dynamic Energy Budget (DEB) bioenergetic module for larval growth was developed.
PROGRESS IN OCEANOGRAPHY
(2023)
Article
Biodiversity Conservation
Andrea Thiebault, Chloe Huetz, Pierre Pistorius, Thierry Aubin, Isabelle Charrier
Summary: This study found that acoustic data alone can accurately reconstruct activity budgets in seabirds. By analyzing different acoustic features associated with activities like flying, floating on water, and diving, a method was developed to automatically identify these activities in equipped individuals with a classification accuracy of 98.46%.
ANIMAL BIOTELEMETRY
(2021)