Results 31 to 40 of about 372,823 (264)

Habitat and Macrozoobenthic Diversity in Marine Protected Areas of the Southern Romanian Black Sea Coast

open access: yesFrontiers in Marine Science, 2022
Exposure to a variety of anthropogenic stressors has prompted the creation of a growing number of marine protected areas (MPAs). Unfortunately, long-term changes in both the sources of stress and the extent or operation of the MPAs have also occurred, at
Tatiana Begun   +6 more
doaj   +1 more source

Is unstable reliable? Oxygen conditions in the ecological status assessment of lakes

open access: yesLimnological Review, 2016
The Water Framework Directive introduces the requirement for ecological status assessment based primarily on aquatic organisms and supporting physico-chemical elements, including oxygen conditions.
Soszka Hanna   +2 more
doaj   +1 more source

Status and Ecological Effects of the World’s Largest Carnivores [PDF]

open access: yesScience, 2014
Preserving Predators Large-bodied animals play essential roles in ecosystem structuring and stability through both indirect and direct trophic effects. In recent times, humans have disrupted this trophic structure through both habitat destruction and active extirpation of large predators, resulting in large ...
Ripple, William J.   +13 more
openaire   +3 more sources

Acanthocephalan parasites reflect ecological status of freshwater ecosystem

open access: yesScience of The Total Environment, 2022
Acanthocephalans' position in food webs, in close interaction with free-living species, could provide valuable information about freshwater ecosystem health through the viability of the parasites' host populations. We explored Pomphorhynchus laevis cystacanths' and adults' intensities of infection, and the prevalence of infected hosts respectively in ...
Fanton, Hadrien   +4 more
openaire   +2 more sources

Revisiting the Yeghegis River for the purposes of hydrobiological monitoring

open access: yesТрансформация экосистем
Due to initiated in 2011 improvements in the water management system of Armenia, six Basin Management Areas were created and hydrobiological monitoring was introduced. It requires regular investigations of ecological status of surface water bodies.
Dallakyan M.R.   +5 more
doaj   +1 more source

A Combined Field and Remote-Sensing Based Methodology to Assess the Ecosystem Service Potential of Urban Rivers in Developing Countries

open access: yesRemote Sensing, 2019
Natural rivers in urban areas bear significant potential to provide ecosystem services for the surrounding inhabitants. However, surface sealing by houses and street networks, urban drainage, disposal of waste and wastewater resulting from advancing ...
Manuel R. Beißler, Jochen Hack
doaj   +1 more source

USE OF TOXICOLOGICAL CHARACTERISTICS IN THE INTEGRATED ASSESSMENT OF THE WATER BODIES ECOLOGICAL STATUS

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2018
This paper presents development stages of water bodies’ ecological status integral index. The surface water acute toxic effects for different taxonomic level test-objects (Daphnia magna Straus, Chlorella vulgaris Beijer, Paramecium caudatum Ehrenberg ...
Nadezhda Zuyeva   +2 more
doaj   +1 more source

Ecological status of urban ponds in Białystok, Poland [PDF]

open access: yesLimnological Review, 2016
Abstract Stawy Dojlidzkie (The Dojlidy Ponds) are located in the north-eastern part of Poland, near the capital of the Podlasie province, in Białystok. The Dojlidy Ponds (DP) are a complex of more than 20 reservoirs arranged adjacent to one another in an area of about 140 hectares.
Jekatierynczuk-Rudczyk, Elżbieta   +2 more
openaire   +2 more sources

Design and analysis strategies for robust microbiome ageing research

open access: yesFEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik   +5 more
wiley   +1 more source

Detecting Ecological Changes with a Remote Sensing Based Ecological Index (RSEI) Produced Time Series and Change Vector Analysis

open access: yesRemote Sensing, 2019
Increasing human activities have caused significant global ecosystem disturbances at various scales. There is an increasing need for effective techniques to quantify and detect ecological changes.
Hanqiu Xu   +4 more
doaj   +1 more source

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