Results 31 to 40 of about 95,822 (213)

The niche of shrimp stocks (Xiphopenaeus kroyeri Heller, 1862) from southeastern Brazil: a stable isotope approach

Journal of Threatened Taxa, 2020
The penaeid shrimp Xiphopenaeus kroyeri is the second most important species of crustacean in Brazilian fisheries. Stable isotopes of carbon and nitrogen are chemical proxies to provide quantitative information about the consumer isotopic niche, which is
Keltony de Aquino Ferreira, Leandro Rabello Monteiro, Ana Paula Madeira Di Beneditto   +2 more
doaj   +1 more source

Nitrate stable isotopes and major ions in snow and ice samples from four Svalbard sites [PDF]

, 2015
Increasing reactive nitrogen (N-r) deposition in the Arctic may adversely impact N-limited ecosystems. To investigate atmospheric transport of N-r to Svalbard, Norwegian Arctic, snow and firn samples were collected from glaciers and analysed to define ...
Aanes R., Alina Marca, Amoroso A., Atkin O.K, Beaudon E., Beine H.J., Björkman M.P, Björkman M.P., Björkman M.P., Blunier T., Bottenheim J.W., Brimblecombe P., Burkhart J.F., Carmen P. Vega, Carroll M.A., Casciotti K.L., Coplen T.B., Dibb J.E., Dickson L.G, Draxler R.R., Elisabeth Isaksson, Eneroth K., Felix J.D., Forsström S., Freyer H.D, Freyer H.D., Førland E.J., Gibbons J.D., Goto-Azuma K., Hastings M.G, Hastings M.G., Hastings M.G., Heaton T.H.E, Heaton T.H.E., Hisdal V, Honrath R.E., Honrath R.E., Jan Kaiser, Jarvis J.C., Kahl J.D.W., Kaiser J., Kang S., Kekonen T., Kühnel R., Kühnel R., Li D., Liu S.C., Mats P. Björkman, Michalski G., Morin S., Morin S., Morin S., Morin S., Mosier A.R., Nuth C., Pohjola V.A., Rickard Pettersson, Rinnan R., Ruggirello R.M., Röthlisberger R., Samyn D., Schuler T.V., Semb A., Shaver G.R., Stohl A., Tõnu Martma, Vega C.P., Veijo A. Pohjola, Wolff E.W, Xu L.   +69 more
core   +2 more sources

Effect of habitat degradation on competition, carrying capacity, and species assemblage stability [PDF]

, 2017
In human-impacted rivers, nutrient pollution has the potential to disrupt biodiversity organisation and ecosystem functioning, prompting calls for effective monitoring and management.
Calizza, Edoardo, Careddu, Giulio, Costantini, Maria Letizia, Rossi, Loreto   +3 more
core   +1 more source

Stable Isotope (δ13C, δ15N, δ18O, δD) Composition and Nutrient Concentration of Red Sea Primary Producers

Frontiers in Marine Science, 2018
Measurements of isotopic composition of marine primary producers are a valuable tool to follow and trace the source and cycling of organic matter in the marine systems, as well to describe the physiological status of aquatic photosynthetic organisms ...
Carlos M. Duarte, Antonio Delgado-Huertas, Andrea Anton, Paloma Carrillo-de-Albornoz, Daffne C. López-Sandoval, Susana Agustí, Hanan Almahasheer, Núria Marbá, Iris E. Hendriks, Dorte Krause-Jensen, Dorte Krause-Jensen, Neus Garcias-Bonet   +11 more
doaj   +1 more source

Stable C and N Isotope Composition of European Anchovy, Engraulis encrasicolus, from the Marmara Sea and the Black Sea

Turkish Journal of Agriculture: Food Science and Technology, 2021
The aim of this study is to determine the stable isotope ratios of anchovy caught in the Black Sea and Marmara Sea. Stable carbon and nitrogen isotope ratios (δ13C, δ15N) of European anchovy (Engraulis encrasicolus) were estimated at four sampling sites (
Tanju Mutlu
doaj   +1 more source

First ice core records of NO3− stable isotopes from Lomonosovfonna, Svalbard [PDF]

, 2014
Samples from two ice cores drilled at Lomonosovfonna, Svalbard, covering the period 1957–2009, and 1650–1995, respectively, were analyzed for NO3− concentrations, and NO3− stable isotopes (δ15N and δ18O).
Björkman, M. P., Isaksson, E., Kaiser, J., Marca, A., Martma, T., Pettersson, R., Pohjola, V. A., Samyn, D., Vega, C. P.   +8 more
core   +1 more source

Effects of spawning Pacific salmon on terrestrial invertebrates: Insects near spawning habitat are isotopically enriched with nitrogen‐15 but display no differences in body size

Ecology and Evolution, 2021
When Pacific salmon (Oncorhynchus spp.) spawn and die, they deliver marine‐derived nutrient subsidies to freshwater and riparian ecosystems. These subsidies can alter the behavior, productivity, and abundance of recipient species and their habitats ...
Nicola F. Rammell, Allison M. Dennert, Christopher M. Ernst, John D. Reynolds   +3 more
doaj   +1 more source

Paleoamerican diet, migration and morphology in Brazil [PDF]

, 2011
During the early Holocene two main paleoamerican cultures thrived in Brazil: the Tradição Nordeste in the semi-desertic Sertão and the Tradição Itaparica in the high plains of the Planalto Central.
Eggers, Sabine, Grupe, Gisela, Parks, Maria, Reinhard, Karl J.   +3 more
core   +1 more source

Compound‐specific stable isotope analysis of nitrogen‐containing intact polar lipids [PDF]

Rapid Communications in Mass Spectrometry, 2015
Rationale Compound‐specific isotope analysis (CSIA) of nitrogen in amino acids has proven a valuable tool in many fields (e.g. ecology). Several intact polar lipids (IPLs) also contain nitrogen, and their nitrogen isotope ratios have the potential to elucidate food‐web interactions or ...
Elisabeth Svensson, Stefan Schouten, Axel Stam, Jack J. Middelburg, Jaap S. Sinninghe Damsté   +4 more
openaire   +3 more sources

Can mussels be used as sentinel organisms for characterization of pollution in urban water systems? [PDF]

Hydrology and Earth System Sciences, 2016
Urbanization strongly impacts aquatic ecosystems by decreasing water quality and altering water cycles. Today, much effort is put towards the restoration and conservation of urban waterbodies to enhance ecosystem service provision, leading to liveable ...
E. S. Reichwaldt, A. Ghadouani
doaj   +1 more source