Results 81 to 90 of about 17,442 (251)

Fire‐induced shifts in activity patterns of predators and prey in the Brazilian Pantanal

The Journal of Wildlife Management, EarlyView.
Using camera trap data, we observed that 5 of 6 prey species showed statistically significant changes in temporal activity patterns, while jaguars were the only predator species to adjust activity when comparing pre‐fire and post‐fire periods in an isolated rocky formation in the Pantanal region.
Sergio Eduardo Barreto de Aguiar, Grasiela Edith Oliveira de Porfirio, Leonardo França do Nascimento, Josiel de Oliveira Coelho, Mariana Alves Carvalho Queiroz, Geovani Vinco Tonolli, Wener Hugo Arruda Moreno, Diego Francis Passos Viana, Rocío Bardales, Matthew Hyde, Ricardo Daniel Ortiz‐Hoyos, Nayara Yoshie Sano, Filipe Martins Santos   +12 more
wiley   +1 more source

Feeding Habits and Trophic Niche Overlap of Aquatic Orthoptera Associated with Macrophytes [PDF]

, 2012
Fil: De Wysiecki, María Laura. Centro de Estudios en Parasitología y Vectores (CEPAVE). Facultad de Ciencias Naturales y Museo.
Capello, Soledad, Marchese, Mercedes, De Wysiecki, María Laura   +2 more
openaire  

How the Physical and Chemical Properties Affect the Heavy Metal Content in Surface Water in Different Types of Peatlands

Land Degradation &Development, EarlyView.
ABSTRACT Only ~3% of the global land surface is covered by peatlands, yet more than one‐third of global soil carbon is stored in these ecosystems and contaminant filtration can be provided. The extent to which peat humification (Fibric–Hemic–Sapric) is linked to dissolved heavy metals in peatland surface waters has remained poorly quantified at a ...
Stanisław Łyszczarz, Norbert Szymański, Michał Jasik, Wojciech Piaszczyk, Andrzej Szlachta, Mirosław Żelazny, Ewa Błońska, Jarosław Lasota, Stanisław Małek   +8 more
wiley   +1 more source

Integrating isotopic niche metrics and gut microbiota assembly reveals coexistence mechanisms in subtropical riverine fish

Ecological Informatics
Understanding interspecific niche overlap is fundamental for evaluating resource partitioning and competitive interactions among sympatric species. Microbial symbiont facilitates rapid adaptation to novel ecological niches, substantially augmenting host ...
Yaqiu Liu, Xinhui Li, Konstantinos Ar. Kormas, Chunni Kou, Huifeng Li, Yuefei Li, Jie Li   +6 more
doaj   +1 more source

Feeding strategy of Menticirrhus americanus and Menticirrhus littoralis (Perciformes: Sciaenidae) juveniles in a sandy beach surf zone of southern Brazil

Zoologia (Curitiba), 2010
The diet and foraging strategy of juvenile Menticirrhus americanus (Linnaeus, 1758) and Menticirrhus littoralis (Holbrook, 1847) were studied, testing the existence of trophic overlap between these species and within different seasons (spring and summer).
Fábio L. Rodrigues, João P. Vieira
doaj   +1 more source

A simple index for assessing cumulative human impacts on mountain lakes

Limnology and Oceanography: Methods, EarlyView.
Abstract Mountain lakes are highly sensitive ecosystems and effective sentinels of environmental change, yet the exposure and magnitude of the human footprint remain poorly quantified. In this study, we develop a simple and non‐invasive abiotic index to assess cumulative pressures on mountain lakes. The proposed index integrates eight variables grouped
Clara Sáez, Ignasi Arranz, Guillermo García‐Gómez, Javier Sánchez‐Hernández   +3 more
wiley   +1 more source

A simplified two‐station approach for modeling metabolism in dam tailwaters subject to diel flow variation

Limnology and Oceanography: Methods, EarlyView.
Abstract Tailwaters are ubiquitous and highly managed ecosystems whose food webs often rely disproportionately on autochthonous energy. In situ continuous dissolved oxygen data are increasingly being used to estimate gross primary productivity and ecosystem respiration in rivers, but this approach is complicated in tailwaters, where upriver ...
Ian W. Bishop, Bridget R. Deemer, Theodore A. Kennedy, Robert A. Payn, Robert O. Hall Jr., Charles B. Yackulic   +5 more
wiley   +1 more source

The Hunger Games: Stable Isotopes Indicate Winter Inter‐Guild Competition for Resources by Marine Meso‐Predators in the Sub‐Arctic North Pacific

Ecology and Evolution
Interspecific competition can significantly impact marine ecosystems by affecting species distributions and abundances. Understanding how sympatric species utilize available food helps identify potential competition and its effects when resources are ...
Genyffer C. Troina, Evgeny A. Pakhomov, Laurie Weitkamp, Aleksey Somov, Brian P. V. Hunt   +4 more
doaj   +1 more source

Competitive relationship between members of the Gobiidae family and other fish species of waters of Pridneprovye region

Vìsnik Dnìpropetrovsʹkogo Unìversitetu: Serìâ Bìologìâ, Ekologìâ, 2014
The paper analyzes the species’ composition of Gobiidae, their quantitative and qualitative parameters in the coastal zone of the Pridneproovye water bodies.
V. V. Khobot, R. O. Novitskiy, D. L. Bondarev   +2 more
doaj   +1 more source

Methodological constraints for the stable isotope analysis of different tissues: A comparison between muscle and whole‐body samples in freshwater gammarids

Limnology and Oceanography: Methods, EarlyView.
Abstract Carbon (δ13C) and nitrogen (δ15N) stable isotope ratios allow the reconstruction of food webs, provided that all trophic levels are properly characterized. In freshwater ecosystems, small‐bodied invertebrates often occupy central positions in food webs, with whole‐body samples commonly used for their stable isotope analysis, due to ...
Alan Fritsch, Pavel Karel Bystřický, Lukáš Veselý, Paride Balzani   +3 more
wiley   +1 more source