Green algae

Our help is needed to once again fix Lake Erie’s Blue-Green Algae problem! Since the 1960’s Lake Erie has had a thick sheet of Blue-Green Algae growing, threatening the lives of thousands of animals and humans that depend on it for fresh water and food. In the mid 1960’s Lake Erie was so polluted that TIME Magazine declared it as “ In danger of dying of suffocation.” The Cuyahoga River was so bad that it caught on fire multiple times, the Mayor of Cleveland declared war on pollution! It was described as “... a skin-like substance on the water’s surface, so thick that people could write their names in it.” writes Heather Brady of The New York Times. In an immense act to clean up, People from all over helped to clean up Lake Erie and farmers…

Competition Of Chlamydomonas and Blue-Green Algae For Resources In The Campus Lake General Research Question: Will competition affect resources available in the Campus Lake? Population Ecology Experiment Null Hypothesis: The presence of Blue-Green Algae will not have an effect on the Chlamydomonas population. Alternative Hypothesis: The presence of Blue-Green Algae will have an effect on the Chlamydomonas population. Community Ecology Experiment Null Hypothesis: Nitrate concentration will…

Introduction Chlorella vulgaris is known to date back more than 2.5 billion years. C. vulgaris is a unicellular green algae that is eukaryotic (Wells). Because of its long life on earth it has been essential for C. vulgaris to evolve so it can survive. One feature that C. vulgaris has is its ability to grow rapidly. Because of its rapid growth scientist have been studying it and found that it can be used in many different ways; wastewater treatments, production of protein-rich food and feed…

3. Algae bloom process the microbes involved in Algae are a diverse group of photosynthetic microorganisms, which vary from small, single-celled microbes to complex multicellular forms. Though algae bloom is considered as natural phenomena, but nutrient pollution can increase their frequency, duration and intensity. After getting adequate nutrition, the algae can grow rapidly in warm and slow moving water. The rapid increase in number causes the bloom to turn water noticeably green, but other…

Individuals were measured based on carapace width (CW), then placed into covered plastic aquaria containing about 0.5L of seawater at a salinity of 20psu. Each crab was used only once in an experiment. Algae, Ulva spp. and fucus distichus, were used as prey in each set up, except the control group which was made up of on the algae. Two Littorina littorea or periwinkle snails were used per experimental design. Their heights were recorded for each set up and it ranged between 9-12mm. Four…

One type of sediment to note is diatomaceous earth, an uplifted siliceous ooze which contains the remains of the microscopic algae known as diatoms (Garrison and Ellis 152). With a density lower than most other sediments—measured at 0.2816 g/ml in our lab results—the powdery and apparently sticky sediment has rather tiny grains as expected from this sort of sediment. As diatomaceous earth derives from the diatom ooze of the deep ocean floor, it originates from the slow dissolution of diatom…

Is the Growth of Microcystis and Lake Water Protists Affected by Phosphorus Concentration? _______________________________________ Purpose The purpose of this experiment is to determine if algae will grow more if fertilizer is added to the water where the algae is growing. Background/ Introduction An algal bloom is an increase and accumulation of algae in freshwater or salt water systems. Most algae blooms are caused by blue-green algae. Blue-green algae is actually not algae at all, it is…

This is through a process of slow deposition and accumulation of limestone removed from seawater. Stony corals and coralline red algae grow among the coral colonies. Limestone is used for the outer part of coral polyps and hardening the fleshy parts of the coralline algae. After organisms die, they leave the limestone skeletons. The reef-building process is very slow, it takes decades to centuries. Coral reefs start to form when coral larvae attach to hard surfaces such as submerged rock along…

the remaining liquid. While waiting for the centrifuge, I measured the absorbance of the 90% acetone at wavelengths 750, 664, 647, and 630 nm on a spectrophotometer. Once the sample was done centrifuging, I repeated the wavelength measurements for the supernatant of the samples. I corrected the absorbance values for the solvent and turbidity. I then calculated the pigments present for each treatment (equations 1-4). Once the correct equations were determined, I calculated the pigment…

Eutrophication is a natural occurrence over the past centuries as bodies of water age and contains sediment (Carpenter 1981). However, due to human activities, the rate of eutrophication has increased and now plays a big role in fish kills. This happens when inordinate amount of fertilizers flow down the rivers and streams and into the sea, which in turn encourages algae and most, if not all, aquatic plants to overgrow. Fishes will then suffocate due to lack of oxygen and sunlight excessively…