Results 11 to 20 of about 105,191 (43)

Polyunsaturated fatty acids in fishes increase with total lipids irrespective of feeding sources and trophic position [PDF]

open access: yes, 2017
Trophic transfer and retention of dietary compounds are vital for somatic development, reproduction, and survival of aquatic consumers. In this field study, stable carbon and nitrogen isotopes, and fatty acids (FA) contents in invertebrates and fishes of
Amundsen, P. -A.   +5 more
core   +2 more sources

Reductions in the dietary niche of southern sea otters (Enhydra lutris nereis) from the Holocene to the Anthropocene. [PDF]

open access: yes, 2020
The sea otter (Enhydra lutris) is a marine mammal hunted to near extinction during the 1800s. Despite their well-known modern importance as a keystone species, we know little about historical sea otter ecology.
Elliott Smith, Emma A   +7 more
core   +1 more source

Benthic meiofauna as indicator of ecological changes in estuarine ecosystems: The use of nematodes in ecological quality assessment [PDF]

open access: yes, 2013
a b s t r a c t Estuarine meiofauna communities have been only recently considered to be good indicators of ecological quality, exhibiting several advantages over macrofauna, such as their small size, high abundance, rapid generation times and absence of
Adão, Helena   +5 more
core   +2 more sources

The Trophic status of Bidighinzu Reservoir (Sardinia) before and after the diversion of waste waters [PDF]

open access: yes, 2001
The purpose of this paper was to assess the effect of the diversion of wastewater on the trophic status of Lake Bidighinzu, a hypertrophic man-made lake in Northern Sardinia, used as a drinking water reservoir.
Aktan, Yelda   +3 more
core  

Evaluating the influence of lake morphology, trophic status and diagenesis on geochemical profiles in lake sediments [PDF]

open access: yes, 2010
Recent geochemical studies provide evidence that changes in vertical distributions of nutrients in lake sediments are driven by anthropogenic activities, based primarily on trends of increasing concentrations in upper sediment layers.
Hamilton, David P.   +2 more
core   +2 more sources

Measurements of uncertainty in macrophyte metrics used to assess European lake water quality [PDF]

open access: yes, 2012
Uncertainty is an important factor in ecological assessment, and has important implications for the ecological classification and management of lakes.
Bertrin, Vincent   +8 more
core   +1 more source

Macronutrient cycling in surface waters [PDF]

open access: yes, 2012
The levels and relative proportions of macronutrients set the conditions for life in surface waters. Man-made disturbances to macronutrient cycling have caused environmental problems such as eutrophication, acidification and global change.
Khalili, Maria
core  

DILSTORE software for ecological status assessment of lakes based on benthic diatoms [PDF]

open access: yes, 2009
Until recently, only few diatom indices were developed for monitoring littoral zones of lakes. The available indices are not applicable for all lake types because species lists and environmental constraints’ ranges are different.
, Acs, Hofmann, Rott, Zelinka
core   +1 more source

Microcystins in components of twelve New Hampshire lakes of varied trophic status [PDF]

open access: yes, 1999
Cyanobacteria toxins, called microcystins (MCs), were found in components of twelve, stratified New Hampshire (USA) lakes of varied trophic status during the summer of 1998.
Johnson, Kimberly M.
core   +1 more source

Linking food web functioning and habitat diversity for an ecosystem based management: A Mediterranean lagoon case-study [PDF]

open access: yes, 2014
We propose a modelling approach relating the functioning of a transitional ecosystem with the spatial extension of its habitats. A test case is presented for the lagoon of Venice, discussing the results in the context of the application of current EU ...
Brigolin, D.   +11 more
core   +1 more source

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