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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 23 for “"Meiofauna"”.
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Studies on the meiofauna of rocky shores
Annual macrofaunal and meiofaunal standing stocks were estimated on an exposed rocky shore along the west coast of False Bay, South Africa, using comparable area based sampling techniques. While meiofaunal densities exceeded those of macrofauna in all zones, by an overall ratio of approximately …
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Meiofauna in a chemosynthetic groundwater ecosystem: Movile Cave, Romania
… Matten, die von dichten, teilweise endemischen Meiofaunapopulationen besiedelt sind. Diese Gemeinschaft umfasst jedoch nur etwa 20 Arten, so dass das Nahrungsnetz der Matten außergewöhnlich einfach aufgebaut ist. Aufgrund der Besonderheiten dieses Ökosystems (extreme Isolation, alleinige …
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Marine Interstitial Tardigrades and Other Meiofauna of Huntington Beach, South Carolina.
<p>At Huntington Beach, SC meiofauna distribution was investigated. The purpose of the study was to determine tardigrade species present and any significant differences in the distribution pattern. Meiofauna were analyzed to determine if there were significant differences in their distribution …
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Spatiotemporal Impact of the Deepwater Horizon Oil Spill on Benthic Meiofauna Communities
… impacted the benthic ecosystem, especially meiofaunal organisms. The initial impact of the DWH oil spill on these organisms, along with their subsequent recovery, were studied in 2010, 2011, 2014, and 2022. Thirty-four stations, consisting of eight highly impacted stations, eleven moderately …
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Meiofauna communities of the Pacific Nodule Province : abundance, diversity and community structure
Die Meiofauna-Gemeinschaften der Pacific Nodule Province (PNP) wurden untersucht, sowie die Fähigkeit dieser Gemeinschaften sich von Eingriffen durch den Abbau polymetallischer Erzknollen zu erholen. Das Regenerationsvermögen wurde in einem Gebiet untersucht, dass 26 Jahre zuvor einem Testabbau der …
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Estudo de contaminantes emergentes e meiofauna no rio Ipojuca no município de Caruaru
… de análises de quantificação e identificação da meiofauna bentônica e da estimativa de biomassa das microalgas que vivem aderidas aos sedimentos hiporreicos, o microfitobentos. Foram identificados um total de 678 indivíduos da meiofauna, distribuídos em quatro taxa mais representativos, rotífera …
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Diversity of meiofauna at deep-sea hydrothermal vents and cold seeps with particular reference to nematodes
… these size categories, are also present in the meiofauna.<br/>This thesis examines the diversity and density patterns of the meiofauna (with particular<br/>reference to nematodes) in quantitative samples collected from: Bathymodiolus mussel beds<br/>in a deep-sea hydrothermal vent field on the …
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Distribuição espaço-temporal da meiofauna e da nematofauna no ecossistema recifal de Porto de Galinhas, Ipojuca, Pernambuco, Brasil
… foram avaliar a distribuição espaço-temporal da meiofauna e da nematofauna de poças de maré e da parte interna do ecossistema recifal. Para avaliar a distribuição vertical da meiofauna e dos gêneros de Nematoda foram coletadas amostras de sedimentos nas poças de marés e na parte interna do …
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Characterization of hyporheic zone processes of a northern prairie stream
… The density and diversity of interstitial meiofauna populations may provide information about the general physical and chemical conditions of streambed sediments. Meiofauna diversity and population size decreased with ·depth at both study sites. High levels of ammonium and/or ambient …
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A study on the behaviour and reproduction of the weedsucker, Eckloniaichthys scylliorhiniceps (Smith, 1943)
… was found to consist wholly of crustacean meiofauna. Internal fertilization occurs and females lay between 120 and 150 eggs on the fronds of kelp. Reproduction is thought to take place year round. Further work needs to be conducted on predators of weedsuckers, tentatively suggested here to …
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Benthic meiofaunal and micro-eukaryotic inhabitation of extreme environments: Submerged caves and hydrocarbon seeps
Benthic meiofauna and microbial eukaryotes comprise diverse taxa that influence biogeochemical cycling and food-web dynamics in aquatic ecosystems. Many inhabit “extreme” environments with steep gradients in parameters such as oxygen, salinity, and organic matter availability, serving as natural …
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Comparative analysis of meiobenthic diversity across habitats in ancient lakes
… environments. This research investigates meiofaunal communities across various lake habitats to reveal broader biodiversity patterns and identify the primary factors shaping community structure. To examine the environmental drivers influencing benthic communities at both local and broad …
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Biogene Steuerung ökologischer Systemeigenschaften des hyporheischen Interstitials der Lahn (Hessen)
… wurde die Bedeutung der hyporheischen Meiofauna für biogene Dekolmationsvorgänge (Fraß und Bioturbation) untersucht.
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Phylogeography of Marine Meiofaunal Nemerteans of the Ototyphlonemertes Fila Species Complex
… speciation and species boundaries among marine meiofauna. Ototyphlonemertes is a genus of meiofaunal nemerteans inhabiting the interstitial spaces of marine sediments. Its members lack pelagic larvae and dispersal potential is believed to be poor. A phylogeographic study of Ototyphlonemertes …
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Terrestrial-aquatic transfers by hippopotamus (Hippopotamus amphibius): effects on food web and benthic community structure of the St Lucia Estuary, iSimangaliso Wetland Park, World Heritage Site, South Africa
… declined by 76, 56 and 27 % respectively, while meiofauna were negligibly impacted by experimental dung enrichment. Results therefore suggest a greater resilience of meiofauna to high dung inputs relative to microphytobenthos and macrofauna. Comparisons of food web components from biotopes with …
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Biodiversity, distribution patterns and trophic position of meiobenthos associated with reduced environments at continental margins
… constitute the most important group of the meiofauna with respect to densities and biomass, followed by harpacticoid copepods, nauplii, polychaetes, tardigrades and other groups (Giere 1993). Because marine nematodes have a worldwide distribution, are the most prominent members of the …
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Interactive processes in a Lanice conchilega (Annelida: Polychaeta) dominated intertidal community
… was designed to investigate the macrofauna and meiofauna in areas of sediment containing different densities of Lanice conchilega tubes. A consistently significant positive correlation existed between tube density and macrofaunal abundance, which was attributed to sediment-mediated interactions. …
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Vulnerability analysis and new tools for climate change adaptation of marine and lagoon systems
… matter as well as on the benthic communities of meiofauna. The field assessment helped me to understand the most vulnerable areas to the impact and cascading responses of the change in trophic status on environmental quality. Finally, I integrated all the knowledge acquired in all the research …
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Estructura y funciones ecológicas de las comunidades bentónicas en planicies de marea de la zona interna del estuario de Bahía Blanca
… y se pudo discriminar un rol clave de la meiofauna, en especial de los nematodos, en la transferencia de nutrientes a niveles tróficos superiores. A partir de las clausuras se observó un claro efecto de cascada en el que, al reducir la intensidad de predación sobre los nematodos se aumentó …
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The ecology of three sandy beaches on the West Coast of South Africa
… with the biomass and densities of macrofauna and meiofauna on the three beaches studied and discusses these results in relation to season and results obtained on beaches elsewhere. On a very broad basis, it is found that the results from west coast beaches fall within the range of results obtained …
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