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Movement Patterns And Feeding Behavior Of The Limpet Tectura Testudinalis (Müller) Along The Mid-Maine Coast, Joshua Lord
Movement Patterns And Feeding Behavior Of The Limpet Tectura Testudinalis (Müller) Along The Mid-Maine Coast, Joshua Lord
Honors Theses
Tectura testudinalis is a limpet that lives in the mid-intertidal zone along the coast of Maine and grazes on a variety of encrusting algae. A previous study asserted that T. testudinalis preferred to feed and rest on the encrusting alga Clathromorphum circumscriptum and that this species of limpet displayed homing behavior. However, I show that T. testudinalis does not home or return to any specific substrate while resting. Conclusive evidence was found for nocturnal movement. I show that C. circumscriptum was the preferred food source for this limpet, closely followed by Hildenbrandia rubra, another encrusting alga. Field and lab experiments …
Microhabitat Selection By The Tortoiseshell Limpet, Tectura Testudinalis (Müller), In Tide Pools On The Mid-Maine Coast, Emily R. Lyczkowski
Microhabitat Selection By The Tortoiseshell Limpet, Tectura Testudinalis (Müller), In Tide Pools On The Mid-Maine Coast, Emily R. Lyczkowski
Honors Theses
Microhabitat selection of the limpet Tectura testudinalis, an important grazer along the rocky Maine coast is examined using both mensurative and manipulative experiments. T. testudinalis substrate selection is essential to its survival in the unpredictable and harsh regime of the intertidal zone. At three sites studied in the Gulf of Maine, T. testudinalis selectively inhabits tidal pools and vertically oriented substrates. Both of these microhabitats reduce the degree of environmental stress (desiccation, extreme temperature, and hypersaline conditions) and predation experienced by individuals. Differences among sites are common, indicating the importance of varying environmental factors in regulating and influencing habitat selection …
Post-Glacial Vegetational History Of The Great Bog, Belgrade, Maine, John Dawson
Post-Glacial Vegetational History Of The Great Bog, Belgrade, Maine, John Dawson
Senior Scholar Papers
A 6-m vibracore taken from the Great Bog in Belgrade, Maine, was sampled for pollen analysis at 10-cm intervals. Samples were processed in the laboratory using standard techniques developed by Faegri and Iversen. The sediment in the sample was reduced to a residue of pollen which was mounted on microscope slides. A minimum of 300 pollen grains was identified and counted at each level using a compound microscope at 400x magnification. Five radiocarbon dates were taken from the core at stratigraphic boundaries. Lastly, pollen concentration and pollen accumulation rates were calculated. The uppermost 3.8 m of the core is fine …