Results 91 to 100 of about 30,594 (297)

The Rhynie Crustacean [PDF]

open access: yesNature, 1926
MR. D. J. SCOURFIELD'S memoir “On a new Type of Crustacean from the Old Red Sandstone (Rhynie Chert Bed, Aberdeenshire), Lepidocaris rhyniensis, gen. et sp. nov.” (Phil. Trans. B, 415,1926), which has already been noticed in NATURE (April 3, 1926, p.498),is so important a contribution to arthropod morphology that no excuse is needed for directing ...
openaire   +2 more sources

Disentangling the effects of climate change in a mountain lake through community structure analysis

open access: yesLimnology and Oceanography, EarlyView.
Abstract Pressures of climate change may trigger regime shifts in ecosystems. Identifying signs of these pressures before the critical transition remains challenging, and it could be useful to anticipate the regime shift. In this research, while exploiting the case of a lacustrine ecosystem, which passed from an unvegetated, phytoplankton‐dominated ...
Giulia Bertoletti   +3 more
wiley   +1 more source

Effect of different levels dietary vitamin C on growth performance, muscle composition, antioxidant and enzyme activity of freshwater prawn, Macrobrachium malcolmsonii

open access: yesAquaculture Reports, 2016
In the present study was conducted to examine the effects and interactions of dietary vitamin C levels on the growth performance, antioxidant ability, muscle composition and enzyme activity in freshwater prawn Macrobrachium malcolmsonii (M. malcolmsonii).
Annamalai Asaikkutti   +4 more
doaj  

Plankton do not care: Minimal effects of ocean liming on plankton growth and grazing in the Eastern Mediterranean

open access: yesLimnology and Oceanography, EarlyView.
Abstract Increasing CO2 emissions have led to the development of CO2 removal strategies to counteract ocean acidification. Among these, ocean alkalinity enhancement techniques, particularly ocean liming, may represent a promising approach to restore seawater pH and boost CO2 sequestration.
Claudia Traboni   +8 more
wiley   +1 more source

Grazing by sea urchins is a potential co‐driver of Greenland kelp forest distribution

open access: yesLimnology and Oceanography, EarlyView.
Abstract Grazing by sea urchins is a main driver of kelp forest dynamics causing shifts from kelp forests to urchin barrens in the temperate region but there is limited information on such patterns from the Arctic region. Based on information from 132 underwater video transects along Greenland's West Coast at 59.9–77.8°N, we explored the distribution ...
Jakob Breinholt Kjær   +10 more
wiley   +1 more source

Age‐based δ15N and δ13C values of otolith organic matter reveal trophic ecology in marine fishes

open access: yesLimnology and Oceanography Letters, EarlyView.
Abstract Fish inhabiting similar environments face space and resource constraints, develop diverse feeding strategies, and adjust their trophic niches during ontogeny to reduce competition. To investigate this process, we reconstructed the trophic trajectory of five species of the family Sciaenidae by analyzing δ13C and δ15N values in otolith organic ...
Mu‐Ting Li   +8 more
wiley   +1 more source

Is acidification of common estuarine macroinvertebrates in stable isotope approaches necessary to analyze aquatic food webs?

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract We evaluated the effect of in situ acidification of common estuarine macroinvertebrates from the Elbe estuary on stable isotope ratios, as the non‐removal of non‐dietary carbon can significantly influence aquatic food web analyses. A 10% HCl solution was used to remove inorganic carbon from crustaceans, which potentially biases the true ratio ...
Elena Hauten   +3 more
wiley   +1 more source

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