Seasonal species composition, density and role of nematodes in activated-sludge effluent treatment works

Woombs, Mark; Laybourn‐Parry, Johanna

doi:10.1016/0043-1354(87)90194-1

Cited by 11 publications

(3 citation statements)

References 18 publications

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“…Only two species were dominant in both seasons, Prismatolaimus cf intermedius and A. sp, while a considerable number of nematode species were present with only very few individuals. In the dry season, a large number of the nematodes were typical for terrestrial or saprobic habitats, e.g., Diplogasteridae, Heterocephalobus and Diploscapter [ 34 , 49 , 50 ]. Many species of these rhabditids like Diplogasteridae and Diploscapter are known to survive not only in saprobic but also in fermented habitats.…”

Section: Discussionmentioning

confidence: 99%

What´s in the tank? Nematodes and other major components of the meiofauna of bromeliad phytotelms in lowland Panama

Zotz

Traunspurger

2016

BMC Ecol

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BackgroundNematodes are a very diverse and extremely abundant group of animals, but their occurrence in the tropics is surprisingly little understood. We investigated the meiofauna of epiphytic tank bromeliads in the lowlands of Panama with particular emphasis on nematodes.ResultsWe encountered 89 morphospecies of nematodes in 54 bromeliad tanks, which were sampled in the wet and the dry season. Rotifers were by far the most abundant group in both the dry and the wet season (with up to 960 individual ml−1), followed by nematodes, annelids and harpacticoid copepods. Individual plants hosted up to 25 nematode species. These nematodes represented a diversity of feeding guilds, suction-feeders and deposit-feeders being most abundant. The relative abundances of feeding-types of nematodes differed considerably in the wet and dry season. Both species richness and abundance were strongly correlated with the size of the phytotelms and the season, while species diversity assessed with the Shannon-index was affected by neither of the two.ConclusionThis is the first study with a particular focus on the diversity of nematodes in tank bromeliads. We document a meiofauna of considerable abundance and diversity, which suggests important functional roles in ecological processes such as decomposition, which in turn warrants further study.Electronic supplementary materialThe online version of this article (doi:10.1186/s12898-016-0069-9) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 99%

What´s in the tank? Nematodes and other major components of the meiofauna of bromeliad phytotelms in lowland Panama

Zotz

Traunspurger

2016

BMC Ecol

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“…Ciliates, rotifers, nematodes and oligochaetes have enough morphological detail to be reliably identified (e.g. [7–9]). Even though these organisms are not responsible for the primary degradation activity of the wastewater communities they contribute to elimination of particulate matter.…”

Section: Classical Techniques For Monitoring the Microbial Communitimentioning

confidence: 99%

Monitoring the community structure of wastewater treatment plants: a comparison of old and new techniques

Amann

Lemmer

Wagner

1998

FEMS Microbiology Ecology

134

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Wastewater treatment is a process of increasing importance in a world with an ever growing human population. Today, most wastewater treatment processes make use of the natural self‐purification capacity of aquatic environments which is the result of the presence and action of microbial communities. Consequently, wastewater treatment facilities are designed to maintain high densities and activities of those microorganisms that satisfy the various purification demands. The performance, at least of large plants, has to be constantly monitored and is subject to strict regulation. Nevertheless, malfunctions resulting in decreased purification efficacy are frequent. This has, over the decades, prompted many microbiologists to compare the structure, dynamics and function of these ‘good’ or ‘bad’, but always complex, microbial communities. Part of these studies was targeted to a basic understanding of the various processes, another part, however, deals with the monitoring of community structure as a means to direct the plant operation towards higher elimination rates and overall stability. Even though the last decade has seen a molecular revolution in microbiology, the standard methods for monitoring wastewater treatment plants still rely on the tools available to the researcher at the beginning of this century, the microscope and agar plates. It is the goal of this MiniReview to compare the potential of the newly available molecular methods with the old monitoring techniques.

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“…The limited data available on the occurrence of nematodes in different habitats in the saprobity spectrum suggests that these organisms have potential as indicator species of pollution. Interestingly, the nematode fauna recorded in the mixed liquor of oxidation ditches also corresponds well with those recorded in polysaprobic and -a-mesosaprobic freshwater habitats (Woombs & Laybourn-Parry, 1987).…”

Section: Discussionmentioning

confidence: 53%

The temporal and spatial distribution of nematodes in percolating filters

Laybourn‐Parry

Woombs

1988

Hydrobiologia

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The spatial and temporal distribution of nematodes in two low rate percolating filter bed sewage treatment plants at Carnforth and Caton, Lancashire, were investigated. Nematodes were abundant reaching densities up to 900 cm-2 of media surface. Numbers decreased down the bed and species composition displayed spatial differences with bed depth. Eight orders of nematode were represented, members of the sub-family Diplogasterinae and Rhabditinae were particularly common. A seasonal pattern of abundance was clearly apparent; two peaks occurred, one in May and a second during the winter months. Lowest numbers corresponded with periods of highest temperature. The demise of the nematodes in the spring was related to the sloughing of the surface film on the media.

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Seasonal species composition, density and role of nematodes in activated-sludge effluent treatment works

Cited by 11 publications

References 18 publications

What´s in the tank? Nematodes and other major components of the meiofauna of bromeliad phytotelms in lowland Panama

What´s in the tank? Nematodes and other major components of the meiofauna of bromeliad phytotelms in lowland Panama

Monitoring the community structure of wastewater treatment plants: a comparison of old and new techniques

The temporal and spatial distribution of nematodes in percolating filters

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