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Continuing Improvements Of The Sharkduino Animal Tag System, William Laney Dec 2017

Continuing Improvements Of The Sharkduino Animal Tag System, William Laney

Undergraduate Honors Theses

Much about the movement and habits of marine animals is still unknown. This information can be found for terrestrial animals through direct observation or video surveillance; however, these optical methods are not effective in aquatic environments. To circumvent this problem, researchers “tag” aquatic animals with small sensor systems that record data about the animals movements. The researchers then recover the tag and use signal analysis to draw conclusions about the habits of the animal. Unfortunately, commercially available tags are expensive and most can only be used once. We created an inexpensive and reusable tag to be used on sandbar sharks ...


Juvenile Blue Crab (Callinectes Sapidus) Survival In Simulated Seagrass Habitats (Zostera Marina And Ruppia Maritima), Kylie Smith Jan 2017

Juvenile Blue Crab (Callinectes Sapidus) Survival In Simulated Seagrass Habitats (Zostera Marina And Ruppia Maritima), Kylie Smith

Undergraduate Honors Theses

Anthropogenic increases in global temperatures and nutrient loads are expected to reduce juvenile blue crab (Callinectes sapidus) survival in the Chesapeake Bay. These factors change habitat composition which can affect juvenile invertebrates and fishes that are dependent on these habitats. Eelgrass (Zostera marina) is declining due to rising water temperatures and increased nutrient loading, while widgeon grass (Ruppia maritima) can tolerate higher temperatures. An indoor mesocosm experiment was designed to test the suitability of Zostera and Ruppia as protective nursery habitats compared to sand. Artificial seagrass plots were placed in flow-through tanks. Juvenile blue crabs were tethered, and adult blue ...