Article
Fisheries
Julius Nielsen, Daniel Esteez-Barcia, Soren Post, Helle Torp Christensen, Anja Retzel, Lorenz Meire, Frank Riget, John Frederik Strom, Audun Rikardsen, Rasmus Hedeholm
Summary: Traditional tagging techniques are limited in capturing data on movement and migration. Pop-up satellite archival tags (PSATs) provide positions at pre-programmed times and collect on-route data for behavior and habitat analysis. PSATs were successfully deployed on Atlantic cod in West Greenland waters, allowing for a detailed behavioral analysis and monitoring of natural behavior for at least four months.
FISHERIES RESEARCH
(2023)
Article
Ecology
Anna R. Staudenmaier, Lisa A. Shipley, Andris J. Bibelnieks, Meghan J. Camp, Daniel H. Thornton
Summary: Through a study in the Colville National Forest, it was found that mule deer and white-tailed deer exhibit geographical habitat segregation in areas of sympatry, with mule deer preferring steep slopes and higher elevations, and white-tailed deer favoring shallower slopes and lower elevations. The different habitat selections by the two deer species reduce the potential for current interspecies interactions, but no evidence of ongoing agonistic interactions was found in this study system.
Article
Entomology
Marcos Minarro, Daniel Garcia
Summary: The study in northern Spain found that native wild bumblebees and managed honeybees play a dominant role in pollinating blueberries. These pollinators differed in their behavior, response to environmental conditions, and effectiveness as pollinators. The complementary roles of bumblebees and honeybees suggest the importance of preserving native wild bee populations for effective blueberry crop management, and the consideration of an integrated pollination strategy involving both wild and managed bees.
Article
Marine & Freshwater Biology
Karen Bourgeois, Jemma R. Welch, Sylvain Dromzee, Graeme A. Taylor, James C. Russell
Summary: Flexibility in foraging strategy is an important mechanism for grey-faced petrels to adapt to spatiotemporal heterogeneity in food availability and energetic constraints of their annual life cycle. Stable isotope analyses revealed variations in stable isotopes, isotopic niches, and diet throughout the annual life cycle. Trophic segregation occurred between adults and chicks, with adults feeding inshore and chicks consuming more oceanic prey. The results demonstrated the plasticity of foraging strategy in response to changing nutritional demands and oceanographic conditions.
Article
Behavioral Sciences
Nioking Amadi, Luca Luiselli, Robert Belema, Grace Awala Nyiwale, Chimela Wala, Nwaiwu Urubia, Roger Meek
Summary: Most lizard species are either diurnal or nocturnal, with few exceptions that have both diurnal and nocturnal activity patterns. An example of niche expansion from diurnal to nocturnal habits can be seen in some populations of Agama agama in West Africa, where these lizards have been observed foraging and thermoregulating at night with the help of radiant heat from incandescent light bulbs. While the benefits of this night-light shift for thermoregulation are evident, it is not certain whether this is the main reason for the shift or just an additional advantage during foraging.
ETHOLOGY ECOLOGY & EVOLUTION
(2021)
Article
Ecology
Florian Orgeret, Ryan R. Reisinger, Tegan Carpenter-Kling, Danielle Z. Keys, Alexandre Corbeau, Charles-Andre Bost, Henri Weimerskirch, Pierre A. Pistorius
Summary: Sexual competition is increasingly recognized as an important driver of species distribution patterns. This study investigated the relative importance of interpopulation versus intrapopulation competition in influencing sex-specific distribution and habitat preferences in two populations of wandering albatrosses. The results showed that intrapopulation sexual segregation was significant, indicating that historical intrapopulation competition may have led to sexual dimorphism and niche specialization, supporting the 'niche divergence' hypothesis.
JOURNAL OF ANIMAL ECOLOGY
(2021)
Article
Marine & Freshwater Biology
Bjorn Bjornsson, Hjalti Karlsson, Andreas Macrander
Summary: This study investigates high-frequency depth changes in wild adult Atlantic cod. The results show that these cod swim along vertically undulating paths when searching for prey, most likely to optimize foraging.
Article
Forestry
Gabor Onodi, Agnes Csiszar, Zoltan Botta-Dukat, Tibor Csorgo, Daniel Winkler
Summary: In Central Hungary, the great spotted woodpecker showed pre-breeding intersexual foraging habitat preferences, with males being more specialized for native softwood tree species and neither sex preferring invasive tree species. Despite high niche overlap between sexes, there were clear differences in habitat usage, which could potentially lead to negative impacts on bird species due to increased within-species competition caused by further decrease in native tree species.
SCANDINAVIAN JOURNAL OF FOREST RESEARCH
(2021)