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The Trophic state of Patagonian Argentinean lakes and its relationship with depth distribution in sediment Phosphorus
(Univ Tehran, 2014)
The parameters used to determine the trophic state of a water body are: total phosphorus (TP), transparency (Secchi disk depth) and chlorophyll a. However, these parameters show strong seasonal fluctuations which may hinder ...
Trophic relationships between sperm whales and the jumbo squid using stable isotopes of C and N
(Marine Ecology Progress Series, 2004)
The trophic position and the predator–prey relationship between the sperm whale Physeter macrocephalus and the jumbo squid Dosidicus gigas were examined by measuring stable isotope ratios of carbon and nitrogen. Skin samples ...
Unifying microorganisms and macrograzers in rocky shore ecological networks
(2023)
Over the past decades, our understanding of the vital role microbes play in ecosystem processes has greatly expanded. However, we still have limited knowledge about how microbial communities interact with larger organisms. ...
On the relationship between trophic position, body mass and temperature: reformulating the energy limitation hypothesis
(BLACKWELL, 2007-09)
Understanding the factors that constrain and drive changes in food chain length represents an open challenge in ecology. Although several explanatory hypotheses have been proposed, no synthesis has yet been achieved. The ...
Trophic ecology of large pelagic fish in the Saint Peter and Saint Paul Archipelago, Brazil
(2019-01-01)
Trophic relationships of large pelagic predators can determine the structure and dynamics of oceanic food webs. The feeding habits and trophic ecology of five large pelagic fish (Acanthocybium solandri, Coryphaena hippurus, ...
Estimating fish production in the itaipu reservoir (Brazil): The relationship between fish trophic guilds, limnology, and application of morphoedaphic index
(2014-10-01)
Many experimental studies contributed to the development of the theory of the lacustrine food web, disclosing the important paper of the fish, for decades ignored by the limnology. This work is based on the hypothesis of ...
Pestimating fish production in the itaipu reservoir (Brazil): The relationship between fish trophic guilds, limnology, and application of morphoedaphic index
(2014-01-01)
Many experimental studies contributed to the development of the theory of the lacustrine food web, disclosing the important paper of the fish, for decades ignored by the limnology. This work is based on the hypothesis of ...
Fatty acid composition of wild Odontesthes bonariensis (Valenciennes 1835) larvae: implications on lipid metabolism and trophic relationships
(Blackwell Verlag GmbH, 2015-05-15)
The fatty acid composition of the pejerrey Odontesthes bonariensis larvae was studied to elucidate potential dietary relationships. Their principal fatty acids were characteristic for membrane lipids of aquatic organisms. ...
Intraspecific basal metabolic rate varies with trophic level in rufous-collared sparrows
(2009)
One of the most controversial hypotheses that associate basal metabolic rate (BMR) with food habits and habitat productivity is the food habit hypothesis (FHH). Here we examined the relationship between BMR, diet, and ...
Trophic State Evolution over 15 Years in a Tropical Reservoir with Low Nitrogen Concentrations and Cyanobacteria Predominance
(2016-03-01)
Anthropic eutrophication is one of the most widespread problems affecting water quality worldwide. This condition is caused by excessive nutrient inputs to aquatic systems, and one of the main consequences is accelerated ...