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Showing 1 to 20 of 25 for “"littoral zone"”.
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Survey of marine cercariae from the coasts of Marin and Sonoma Counties, California
… the cercarial fauna of marine mollusks in the littoral zone and estuaries of the California coast between Duxbury Reef and Fort Ross. The investigation began in June, 1968 at the Pacific Marine Station, Dillon Beach, California and continued through July, 1969, with monthly collections at …
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THE ECOLOGY OF A SUBMERSED MACROPHYTE, MYRIOPHYLLUM HETEROPHYLLUM: COMPETITION FOR NUTRIENTS WITH PHYTOPLANKTON AND SEASONAL CHANGES IN TISSUE MINERAL CONTENT
… phytoplankton and sediments in the littoral zone of Lake Winnipesaukee were examined. Nutrient additions were made to in situ enclosures with (a) littoral water only, (b) littoral water and rooted M. heterophyllum, (c) littoral waters and sediments, and (d) littoral water, sediments …
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Deep Learning of Semantic Image Labels on HDR Imagery in a Maritime Environment
… of semantic image labels is studied in a littoral environment. This study theorizes that the use HDR imagery may be extremely beneficial for the purpose of situational awareness in maritime environments due to the inherent advantages of the technology. This study creates labels for a …
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A study of nitrification in lakes of the English Lake District
… in oxidised sediments than in the water column. Littoral sediments were more important than profundal sediments as sites of nitrification due to higher temperatures and the persistance of oxidising conditions to greater depths into these deposits. Within the littoral zone the physical …
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Trigger Point Theory as Aesthetic Activism
… The problems of accelerated loss of coastal (littoral) zone biodiversity, degraded water quality, and habitat fragmentation need critical attention. The author’s research goal was to present a replicable set of guidelines for identifying small points of restoration for wetland littoral zones …
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Recruitment from resting stages among bloom-forming cyanobacteria
… of cyanobacteria from the sediments. Hence, the littoral-zone, where these factors have substantial impact, should be the major recruitment site, which was also confirmed in my studies. Cyanobacteria has a low internal N:P ratio and in eutrophic freshwaters, cyanobacterial dominance is often …
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A Comparison of the Age and Growth of Yellow Perch, Perca flavescens (Mitchill) in Lake Audubon and Lake Sakakawea, North Dakota, 1978
… in water quality and relative amount of littoral area appear to be responsible for the observed differences on age and growth in the two lakes. Sakakawea, appearing less nutrient rich, and having a shortage of well established littoral zone, appears to have a weakness in its food web at …
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Smelt (Retropinna retropinna) population dynamics and predation by rainbow trout (Salmo gairdneri) in Lake Taupo
… juvenile 0+ year class occupied only the pelagic zone and fed exclusively on plankton whilst the adult 1+ year class also occupied the littoral zone and insects present there were included in their diet. A few smelt either failed to spawn at two years old or survived spawning. These grew rapidly, …
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Biology of immature Culicoides variipennis ssp. australis (Coq.) (Diptera:Ceratopogonidae) at Saltville, VA
… the summer, larval/pupal distribution within the littoral zone of a brine pond was confined to the surface cm of mud at or near the shoreline. Insects overwintered farther offshore, mostly as 3rd instars. In ear1y' March, most larvae had xnolted to 4th instars and migrated above shoreline to …
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Lake Benthic Algal Production and Extracellular Material
Littoral zone primary production is under-studied relative to the pelagic zone, despite recent work indicating its importance to the lake as a whole. Benthic extracellular material, shown to be important for food web dynamics and stabilization of the surrounding ecosystem in the marine intertidal, …
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A Novel Method of Determining Sediment Transport using Ultrasonic Wireless Sensors
… the visible beach and submerged parts of the littoral zone. Consequently, two current limitations to effective coastal monitoring are: 1. data acquisition is largely manual and 2. measurements are limited to the visible beach. This results in an incomplete picture of what is happening due to …
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Diatom and protozoan community analysis and colonization on artificial substrates in lentic habitats
… trophic groups. PF substrates were placed in the littoral zone of lentic habitats. Substrates were sampled through a time series and examined for their diatom and protozoan species' presence-absences. The first hypothesis was tested by using the MacArthur-Wilson equilibrium model and by fitting …
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Nutrient Limitation of Upper Great Lakes Periphyton across Large Spatial and Environmental Gradients
… the highly dynamic and spatially heterogeneous littoral zone. To assess the nutrient limitation status and its correlates for periphyton in the Upper Great Lakes, I deployed nutrient diffusing substrata (NDS) at 28 sites in Lake Superior, northern Lake Michigan, and Green Bay that spanned broad …
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Food Habits of Walleyes in Lake Oahe, South Dakota
… became important as walleyes moved from the littoral zone of the bay to open water. Macroinvertebrates were not a substantial portion of the diet of YOY walleyes. The only macroinvertebrates found in walleye stomachs were ephemerids and chironomids, which were also found to be prevalent in …
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From the Edge: the Littoral in Visual and Literary Imaginaries of Mexico
The word littoral/*litoral* derives from the Latin *litor*, meaning ‘of or pertaining to the shore’ (OED). It entered usage in the mid-seventeenth century and has since accumulated a variety of referents, some cartographically or ecologically specific, others symbolic. The ‘littoral zone’ has most …
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Patterns of energy flow in populations of the dominant insect consumers on Marion Island
… decomposer of stranded kelp in the island's littoral zone. Herbivore populations (of E. halticella larvae and E. similis adults) assimilate less than 5 % of the annual net primary production at Marion Island. P. dreuxi mirabilis larval populations may assimilate up to 10 % of stranded kelp …
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Sand bed morphodynamics under water waves and vegetated conditions
The littoral zone plays an integral role in the success of today's thriving society, providing a stable food supply as well as points of trade/transport for goods around the world. Key environmental processes in this region such as sediment transport, wave attenuation, and boundary layer …
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Holocene landscape history of southern Portugal
… and Guadiana estuaries and changes in the littoral zone, and are critical to the interpretation of palynological material preserved in within the cores. Pollen analyses of the estuarine sediments provide detailed palaeoecological information regarding changes in local and wetland …
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Past and present benthic fauna of Lake Maratoto with special reference to the chironomidae
… of water level which altered the area of the littoral zone. Twelve stratigraphic zones of chironomid microfossils were derived from cluster and multiple discriminant analyses. These are discussed in relation to zones derived from pollen, stratigraphy and chemical analyses of the sediments
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Amphibian Community Composition And Disease Susceptibility In Ridge-Top Wetlands Of The Daniel Boone National Forest
… Rapid Assessment Method scores, and shallower littoral zones than both constructed wetland types. Natural wetlands also had greater canopy closure than bat wetlands. Using an ADONIS procedure, I found that amphibian communities in natural wetlands differed significantly from those in bat …
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