Global ETD Search
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 24 for “"Infauna"”.
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Factors affecting the infauna associated with mussel beds
… size) have on the community composition of the infauna associated with mussel beds along the coast southern Africa.
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Use of MicroCT to determine the functional ecology of intertidal infauna
Intertidal infauna through the process of bioturbation, play a major role in estuarine ecosystem functioning. Despite this, methods to both quantitatively and qualitatively assess the features produced from bioturbation have been limited. This study builds upon the recently developed technique by …
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Ecology of the infauna of Spurn Bight mudflats : an area proposed for reclamation
The invertebrate infauna of Spurn Bight, an extensive area of mudflats in the outer Humber Estuary, internationally important for wildfowl and subject to land reclamation proposals, was studied in the form of a short term extensive survey of the wole area followed by a year long intensive study of …
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Infaunal Abundance and Diversity in Vegetated and Unvegetated Areas of a Georgia Salt Marsh
… the salt marsh; research has shown that marsh infauna play an important role in the diets of these species. The distribution and abundance of some of these infauna has been shown to be influenced by vegetative cover. In 2001, salt marshes along the coast of Georgia began to die, resulting in …
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Benthic microalgae on the Louisiana inner continental shelf: biomass, distribution, and contribution to benthic food-webs
… I found BMA was the primary basal resource for infauna where BMA was consistently predominant in the sediment algae. In sediments containing a mix of BMA and phytoplankton, isotope data indicated both resources were important to infauna. Our study demonstrates that, when available, BMA is …
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Long-term changes in a small, urban estuary
… earlier surveys dating back to the early 1950s. Infauna, epifauna and salinity were taken at designated stations along Milnerton Lagoon. Prawn (Callichirus kraussi) counts were also made in order to determine current abundance and distribution. Results showed a substantial decline in sand prawn …
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The relationship between sediment composition and infaunal polychaete communities along the southern coast of Namibia
… the relationship between sediment structure and infaunal polychaete communities off the southern coast of Namibia from two separate sets of data, and a total of ninety-two samples. It also examined whether a selected group of organisms (polychaetes) could provide the same level of information …
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Experimental studies of interactions between Zostera marina and the associated benthic fauna
… and seasonal changes in abundance of the benthic infauna within an eelgrass bed; (2) Observe what immediate effects occur to the benthic community as a result of experimental removal of eelgrass plants from plants within the Zostera bed; (3) Measure the seasonal variation of eelgrass turion length …
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The ecological role of feeding disturbances of the Atlantic horseshoe crab, Limulus polyphemus
… the entire intertidal foraging season.</p><p>Infauna densities in individual Limulus feeding pits were significantly lower than in undisturbed sediment, and recovered to resemble the structure of undisturbed communities within 28 days. The role of Limulus disturbance on infaunal community …
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Effects of demersal trawling on marine infaunal, epifaunal and fish assemblages: studies in the southern Benguela and Oslofjord
… the impacts of the demersal trawl fishery on infaunal, epifaunal and fish assemblages in the southern Benguela upwelling system for the first time. In the absence of representative areas of similar habitat protected from trawling in the southern Benguela region, infaunal and epifaunal …
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Long-term change in the invertebrates of Zandvlei Estuary, with focus on the invasive reef worm Ficopomatus enigmaticus
… This study provides the first record of the infauna associated with F. enigmaticus in Zandvlei, which comprises 16 species. One of these is the hitherto unrecorded alien bryozoan, Conopeum seurati. Further research is required to understand the effects of long-term salinity change on the …
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Predicting the ecosystem effects of harvesting beach-cast kelp for biofuel
… with wrack were associated with enriched benthic infauna (polychaetes) on the lower shore, and wrack mounds supported abundant macroinvertebrates (mainly Diptera larvae and oligochaetes); with some of the highest biomasses reported globally for beaches. These fauna are valuable prey to shorebirds, …
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The role of coastal defence structures in channeling production in coastal ecosystems
… ecological<br/>assemblages of the sediment infauna and rocky shore epifauna associated with the breakwater<br/>scheme, as well as for two nearby beaches with groynes. Further analysis determined decay<br/>rates, decay processes, changes in C and N stable isotope values of dominant macroalgal …
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The petrology of clay-rich beds in the Turonian (Upper Cretaceous) of the Anglo-Paris Basin
… in the epifauna, and little change in the infauna. Stratigraphically, geochemical patterns reflect changes in the overall composition of the clay fraction, making it posslble to suggest in which of the two principal clay minerals each clay associated element occurs. Rare-earth element …
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Flow and sediment properties influencing erosion of fine-grained marine sediments : sea floor and laboratory experiments
… that area is characterized by a deposit-feeding infauna that reworks the sediments. Observations made with the in situ flume suggest that erosion resistance of compacted bottom sediments is up to twice as great as the erosion resistance of biogenically reworked sediments. Estimates of erosional …
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El rol de la biota en los procesos de estabilización-desestabilización de sedimentos estuariales
… se realizará bajo la siguiente hipótesis: la infauna bentónica del estuario de Bahía Blanca cumple un rol preponderante en la desestabilización de los sedimentos colonizados y ejerce influencia en la exportación de materiales del sistema. En el Capítulo I se evaluó cuáles son los efectos de la …
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Resposta da macrofauna bêntica estuarina a distúrbios : experimentos de eutrofização e recolonização no Canal de Santa Cruz-PE
… causar a defaunação e que, na área de estudo, a infauna apresentou uma rápida capacidade de recuperação nas áreas defaunadas (mesoescala) por hipoxia/anoxia
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Intertidal Seagrass Meadows in South West England: The Ecology of Expansion
… assemblage within these new meadows through infauna cores, comparing results with samples collected from an established Zostera noltii meadow within the Kingsbridge Ria, and unvegetated estuarine mudflats.<br/><br/>This research evidences, using remote sensing techniques, the spatio-temporal …
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Soft sediment ecology of Lough Hyne Marine Reserve - spatial and temporal patterns
… was established. The abundance of burrowing infauna comprising decapods crabs and Fries’ gobies, was estimated by identifying and counting their distinctive burrow structures. While above the summer thermocline depth, burrow abundance increased in a linear fashion, below the thermocline depth …
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Feeding habits of the yellowtail flounder and production of its invertebrate prey on Georges Bank
As part of the Georges Bank Benthic Infauna Monitoring Program, size-frequency analysis was used to study the life history and production of three benthic amphipod species: Ampelisca agassizi, Unciola inermis and Ericthonius fasciatus. Abundant over large areas of Georges Bank, these amphipods are …
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