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Mostrando ítems 21-30 de 2044
Intra- and interspecific variation in trophic ecology of ‘predatory’ ants in the subfamily Ponerinae
(Wiley Blackwell Publishing, Inc, 2020-06)
1. The characterisation of energy flow through communities is a primary goal of ecology. Furthermore, predator–prey interactions can influence both species abundance and community composition. The ant subfamily Ponerinae ...
Carbon productivity and flux in the marine ecosystems of the Galapagos Marine Reserve based on cetacean abundances and trophic indices
(Universidad de Valparaíso. Facultad de Ciencias del Mar, 2009)
A comprehensive assessment of mercury exposure in penguin populations throughout the Southern Hemisphere: using trophic calculations to identify sources of population-level variation
(Elsevier, 2015-08)
The wide geographic distribution of penguins (Order Sphenisciformes) throughout the Southern Hemisphere provided a unique opportunity to use a single taxonomic group as biomonitors of mercury among geographically distinct ...
Species richness and functional structure of fish assemblages in three freshwater habitats: effects of environmental factors and management
(Wiley-Blackwell, 2019-08-12)
In this study, the inverted trophic hypothesis was tested in the freshwater fish communities of a reservoir. The distribution of fish species in three freshwater habitats in the Jurumirim Reservoir, Brazil, was examined ...
Quality and digestibility of food ingested by various trophic fish groups in the Upper Paraná River floodplain
(Universidad de Costa Rica, 2011)
Trophic relationships of a subtidal fish assemblage in the Francisco Coloane Coastal Marine Protected Area, southern Chilean Patagonia
(Taylor & Francis, 2018)
A combination of stomach content and nitrogen (delta N-15) and carbon (delta C-13) stable-isotope analysis was used to assess the trophic interactions and feeding habits of three notothenioid coastal fish (Champsocephalus ...
Measuring q-bits in three-trophic level systems
(Elsevier Science BvAmsterdamHolanda, 2007)
Phytoplankton as trophic descriptors of a series of Mediterranean reservoirs (Catalonia, Spain)
(2017-12-01)
The aim of this work was to determine the ways in which the associations of phytoplankton (species, classes, and functional groups) responded to different trophic states in a series of Mediterranean reservoirs (La Llosa ...
Trophic level and isotopic composition of 13C and 15N of pacific angel shark, Squatina californica (Ayres, 1859), in the Southern Gulf of California, Mexico
(Journal of Fisheries and Aquatic Sciences, 2011)
δ13C and δ1NN stable isotopes were used to determine trophic level and the assimilated food components of Pacific angel shark, Squatina californica and its variation between size, sexes and seasonally in the southern Gulf ...