23,655 Result(s)
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Open AccessLagrangian dynamics of the spring zooplankton community in a large river
Zooplankton may represent a considerable part of plankton in large rivers, but little is known about the factors that control it. We hypothesized that (1) significant longitudinal increase of zooplankton abund...
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Open AccessDownstream passage performance of silver eel at an angled rack: effects of behavior and morphology
The European eel is critically endangered due to heavy impact of anthropogenic factors, such as habitat fragmentation, overexploitation and climate change. During downstream migration, silver eels may encounte...
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Open AccessDynamic adaptation of phytoplankton vertical migration to changing grazing and nutrient conditions
Despite the ubiquitous occurrence of vertical migration of phytoplankton its quantitative significance remains poorly known. We eliminated a dense Daphnia population in a pond by introducing whitefish fingerlings...
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Open AccessDual effects of drying and urban pollution on leaf litter decomposition and shredder consumption in permanent and intermittent streams
In the present study we investigated the combined effect of flow intermittence and wastewater treatment plant (WWTP) effluent on leaf litter decomposition in two Mediterranean streams with permanent and interm...
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Open AccessResistance not resilience traits structure macroinvertebrate communities in newly drying stream sections
Transitioning from perennial to non-perennial flow regimes causes ecological shifts in aquatic communities. Aquatic macroinvertebrates deploy resistance and resilience strategies to cope with flow intermittenc...
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Correction: Dietary and niche analyses of four sympatric batoid species of the subtropical South Atlantic Ocean
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Open AccessDo stingray feeding pits enhance intertidal macrobenthic biodiversity?
Little is known of the macrobenthos supported within stingray feeding pits. Compared to adjacent unpitted areas during low tide, macrobenthic abundance and biodiversity within the stingray pits might be expect...
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Open AccessSpecies-specific trophic discrimination factors can reduce the uncertainty of stable isotope analyses
Stable isotope analysis has been broadly used to study food webs, but often relies on inaccurate assumptions of trophic isotopic discriminations, which could lead to misinterpretation of obtained results. Whil...
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Open AccessPhytoplankton abundance and biodiversity in adjacent estuaries: the importance of submarine groundwater discharge
A near-unique pair of adjacent bays in the karst region of western Ireland provided the opportunity to compare phytoplankton diversity and abundance in an area of submarine groundwater discharge (SGD) side by ...
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Open AccessThe influence of habitat heterogeneity on Nematoda communities in Posidonia oceanica meadows
Nematodes typically comprise the most abundant phylum in meiofaunal communities. We aim to characterize the specific ecological conditions that influence Nematoda communities in Posidonia oceanica grasslands focu...
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Open AccessAssessing water diversion impacts on the fish community size structure in headwater stream stretches
Water diversion for hydropower plants is one of the leading causes of habitat alteration and biotic homogenization. The impacts of small hydropower plants on fish communities are usually assessed using taxonom...
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Open AccessEffects of oligotrophication and Dreissena littoral-pelagic coupling on littoral invertebrate and fish communities: insights from stable isotopes of archived samples
Changing nutrient concentrations and introduction of non-native species affect the energy and nutrient fluxes in aquatic ecosystems. As a response, invertebrate communities could be altered, and ‘novel’ trophi...
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Open AccessPonto-Caspian amphipod co-location with zebra mussel beds (Dreissena polymorpha) is influenced by substrate size and population source
The global spread of non-native species is leading to an increasing frequency of multiple co-occurring non-native species. We examined the co-occurrence of the bivalve mollusc Dreissena polymorpha (zebra mussel) ...
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Author Correction: Multiscale nest-site selection and breeding biology: infrared camera monitoring of the great crested grebe Podiceps cristatus in a plateau freshwater lake in southwestern China
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Open AccessPhylogenetic analysis of virulent strains of the Newcastle disease virus isolated from deceased chickens in Tanzania's Morogoro and Iringa regions
Newcastle disease (ND) is a viral disease affecting a wide range of bird species and has a considerable financial impact on the world's poultry market. The ND virus (NDV) strains currently circulating in poult...
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Open AccessHeterogeneous shell growth of the neustonic goose barnacle Lepas anserifera
Floating materials of both natural and anthropogenic origin affect marine ecosystems and human economic activities. Although the tracking of floating materials is important to manage the economic risks, it is ...
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Open AccessThe nature of the last universal common ancestor and its impact on the early Earth system
The nature of the last universal common ancestor (LUCA), its age and its impact on the Earth system have been the subject of vigorous debate across diverse disciplines, often based on disparate data and method...
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Open AccessPreliminary investigation of potential links between pigmentation variants and opioid analgesic effectiveness in horses during cerebrospinal fluid centesis
The pleiotropic effects of the melanocortin system show promise in overcoming limitations associated with large variations in opioid analgesic effectiveness observed in equine practice. Of particular interest ...
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Open AccessTaxonomic diversity and environmental tolerance of cultivable extremophilic bacteria from a high-altitude meltwater pond on Ojos del Salado (Chile)
Earth harbors unique environments where only microorganisms adapted to extreme conditions, known as extremophiles, can survive. This study focused on a high-altitude meltwater pond, located in the Puna de Atac...
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Open AccessMacro- and micro-anatomical investigation of the oropharyngeal roof of landform greek tortoise (Testudo graeca graeca) and semi-aquatic red-eared slider turtle (Trachemys scripta elegans)
The present investigation examined the oropharyngeal roof of two turtles having different feeding behaviors: the landform Greek tortoise (Testudo graeca graeca) primarily herbivores and the semi-aquatic red-eared...
