Results 21 to 30 of about 82,204 (193)

Zooplankton and trophic status of Peipsi-Pihkva Lake

Трансформация экосистем, 2018
Long-term studies of the zooplankton of Chudsko-Pskovskoe (Peipsi-Pihkva) Lake have shown that the species composition and structure of the community correspond to those of eutrophic waters. Intensification of the eutrophication of the lake in the period
Anna V. Cherevichko
doaj   +1 more source

Reconstructing Pleistocene Australian herbivore megafauna diet using calcium and strontium isotopes

Royal Society Open Science, 2023
Isotopes in fossil tooth enamel provide robust tools for reconstructing food webs, which have been understudied in Australian megafauna. To delineate the isotopic composition of primary consumers and understand dietary behaviour at the base of the food ...
Dafne Koutamanis, Matthew McCurry, Theo Tacail, Anthony Dosseto   +3 more
doaj   +1 more source

Food and feeding habits of the red mullet, Mullus barbatus (Actinopterygii: Perciformes: Mullidae), off the northern Tunisian coast (central Mediterranean) [PDF]

Acta Ichthyologica et Piscatoria, 2011
Background. The red mullet, Mullus barbatus L., is abundantly captured and targeted throughout the year in Tunisian waters but not all aspects of its biology have been studied well.
M. Chérif, M.M. Ben Amor, S. Selmi, H. Gharbi, H. Missaoui, C. Capapé   +5 more
doaj   +3 more sources

Structural changes within trophic levels are constrained by within‐family assembly rules at lower trophic levels [PDF]

Ecology Letters, 2018
AbstractHistorical contingency broadly refers to the proposition that even random historical events can constrain the ecological and evolutionary pathways of organisms and that of entire communities. Focusing on communities, these pathways can be reflected into specific structural changes within and across trophic levels – how species interact with and
Song, Chuliang, Altermatt, Florian, Pearse, Ian, Saavedra Sanchez, Serguei   +3 more
openaire   +5 more sources

Isotopic fractionation and trophic position of zooplankton species in the Upper Paraná River floodplain Fracionamento isotópico e posição trófica de espécies zooplanctônicas da planície de inundação do alto rio Paraná

Brazilian Journal of Biology, 2011
This study aimed to evaluate the isotopic fractionation and trophic position of three zooplankton species (Notodiaptomus amazonicus, Moina minuta and Bosmina hagmanni) in the Upper Paraná River floodplain.
ARA Santana, E Benedito, C Ducatti, FA Lansac-Tôha   +3 more
doaj   +1 more source

The ecological significance of extremely large flocks of birds

Ecology and Evolution, 2019
Population size is generally limited by resource availability during and outside the breeding season. Therefore, maximum size of flocks may provide important information on population regulation and the influence of diet and trophic level on maximal ...
Anders Pape Møller, Karsten Laursen
doaj   +1 more source

The trophic evolution of Lake Iseo as related to its holomixis

Journal of Limnology, 1999
Lake Iseo is undergoing a progressive deterioration in water quality, mainly due to eutrophication. This paper, based on measurements performed on the main tributaries and the outflow, considers the phosphorus, nitrogen and silica budget of the lake ...
Rosario MOSELLO, Michela ROGORA, Valeria MEZZANOTTE, Maria Cristina BRIZZIO, Letizia GARIBALDI   +4 more
doaj   +1 more source

Investigation of spatiotemporal patterns in mean temperature and mean trophic level of MEDITS survey catches in the Mediterranean Sea

Scientia Marina, 2019
Mean temperature (MTC) and mean trophic level (MTL) spatiotemporal patterns of MEDITS survey catches were examined in 13 geographic statistical areas (GSAs) of the Mediterranean between 1994 and 2016.
Panagiota Peristeraki, Isabella Bitetto, Pierluigi Carbonara, Roberto Carlucci, Gregoire Certain, Francesco De Carlo, Michele Gristina, Nikos Kamidis, Paola Pesci, Marco Stagioni, María Valls, George Tserpes   +11 more
doaj   +1 more source

Trophic levels of decomposers in the treatment of herbicide wastewater: a mediator of positive interactions among microbial community assembly, function and stability. [PDF]

Front Microbiol
Xu F, Wu W, Teng J, Wei X, Wang J, Zhao Z, Liu M, Wang H, Kong Q.   +8 more
europepmc   +3 more sources

Trophic ecology of Acestrorhynchus falcirostris Cuvier, 1819 in island lakes on the lower stretch of the Solimões River, Amazon Basin

Brazilian Journal of Biology, 2022
The aim objective of this study was to determine the trophic ecology of juvenile and adult Acestrorhynchus falcirostris during the rising and flood (high-water) period in six island lakes adjacent to the Solimões River.
C. Lubich, J. Aguiar-Santos, F. Corrêa, C. E. C. Freitas, F. K. Siqueira-Souza   +4 more
doaj   +1 more source