Free Essay

Nutrient Pollution

In:

Submitted By Ace2starz
Words 472
Pages 2
Lab Exercise 19: Nutrient Pollution

Student’s Name: _______________________________________ Date: __________________________

1. Starting Up Exercise (5 pts.)
For each of the species in the simulation, list the type of organism it is (phytoplankton, zooplankton, and primary producer, primary consumer, or secondary consumer):

Green algae ___Phytoplankton____________________________________________________________________

Cyanobacteria _Secondary Consumer______________________________________________________________________

Bosmina _____zoo plankton__________________________________________________________________

Daphnia ____Primary Producer___________________________________________________________________

Trout fish ___Primary Consumer____________________________________________________________________

2. Changing concentration of phosphorous, a common limiting nutrient (15 pts.)
Data Table for Phosphorus Input Experiment (3 pts.)
Phosphorous input Green Algae
Population Size Dissolved O2 (mg/L)
1x 191 7.3
2x 334 4.2
3x 463 1.0

Draw a line graph of your green algae population size data (use the Drawing tool or Insert, Shapes) in your word processing program) to show how green algae relate to phosphorus input levels. (2 pts.)
-

a. Explain if the relationship in the above graph indicates whether phosphorus was a limiting nutrient for green algae. (2 pts.)

You also have recorded date from the oxygen meter at the bottom of the lake. Draw a line graph showing the relationship of phosphorous input levels to dissolved oxygen in the water.(2 pts.)

b. Explain the relationship between phosphorous and dissolved oxygen concentrations in the graph above. (2 pts.)

c. Based on your two graphs and you background readings, provide a biological explanation for the relationship between green algae population size and dissolved oxygen the lake. (2 pts.)

d. Explain how the presence of consumers influenced producer population sizes and dissolved oxygen levels. (2 pts.)

3. Toxins Exercise (20 pts.)
(Tables 2.5 pts. each x 4 = 10 pts.)

TOXIN ANALYSIS DATA: Time = 0
Organism Population Size Mercury (ng/g)
Green Algae
Cyanobacteria
Daphnia
Bosmina
Trout

TOXIN ANALYSIS DATA: Time = 1 year (52 weeks)
Organism Population Size Mercury (ng/g)
Green Algae
Cyanobacteria
Daphnia
Bosmina
Trout

TOXIN ANALYSIS DATA: Time = 2 years (104 weeks)
Organism Population Size Mercury (ng/g)
Green Algae
Cyanobacteria
Daphnia
Bosmina
Trout

TOXIN ANALYSIS DATA: Time = 3 years (156 weeks)
Organism Population Size Mercury (ng/g)
Green Algae
Cyanobacteria
Daphnia
Bosmina
Trout

Create a line graph showing mercury concentration over a three-year interval in each species. Your graph will include 5 lines, one for each species; be sure to label which line is for which species. (5 pts.)

a. Explain the relative amounts of mercury in phytoplankton, zooplankton, and trout over time. (2.5 pts.)

b. Did your results indicate whether biomagnification of mercury occurred in the aquatic ecosystem over time? Explain. (2.5 pts.)

4. Changing the concentrations of two common nutrients, phosphorus and nitrogen (10 pts.)

Hypothesis: (2.5 pts.)

Table 3. Testing the effects of phosphorous and nitrogen levels on green algae and cyanobacteria population sizes. (5 pts.)

Phosphorous input Nitrogen input Green Algae
Population Size Cyanobacteria Population Size
0x 0x
1x 1x
1x 3x
3x 1x
3x 3x
3x 0x

Conclusion: (2.5 pts.)

Similar Documents

Premium Essay

Ap Bio Research Paper

...Introduction Vitamins are among the most important nutrients for the human body. Many people are taking regular doses of supplements enriched with various Vitamins in purposes of growing stronger, improving the immune system, and keeping the body healthy. Essential nutrients are critical for plants to grow healthily. However, whether additional Vitamins have an impact on plant growth is not well understood yet. A popular example of nutrients would be minerals. Plants can produce the Vitamin themselves. They also have the ability to gather and convert Vitamins from sunlight. There is this debate on whether additional Vitamins are considered essential for plant growth. It is necessary to investigate if Vitamins could also benefit the growth of plants when they are with Vitamin packed solutions. In this study, three major Vitamin groups that humans constantly intake within doses, named Vitamin C, Vitamin D, and Vitamin E, will be tested....

Words: 1010 - Pages: 5

Premium Essay

Meee

...Table of Contents Abstract............................................................................................................................i Acknowledgment.............................................................................................................ii Chapter 1..........................................................................................................................1 Background Of The Study.......................................................................................1 Statement of the Problem.........................................................................................2 Objectives..................................................................................................................2 Hypothesis.................................................................................................................2 Significance of the Study..........................................................................................3 Scope & Limitation....................................................................................................3 Chapter 2...........................................................................................................................4 Chapter 3...........................................................................................................................6 Chapter 4......................................................................

Words: 370 - Pages: 2

Free Essay

Linkages of Plant Traits to Soil Properties

...plant traits to soil properties and the functioning of temperate grassland The researchers and authors of this paper looked at the idea of plant-soil interactions and how their traits can be a tool to help understand ecosystem functions. Global climate change has affected many factors involved in ecosystems and their functions, and this will continue to happen. A very likely outcome of continued climate change is the changing of plant communities and their traits. This in turn affects the surrounding soil, and that will have an impact on the nutrient cycling which rely very heavily on the soil to be the mediator. Most of Earth’s processes and functions are interconnected and are difficult to alter without having an effect on something else. The relationship of plant traits to ecosystem properties can tell researchers a great deal about the current state of the ecosystem and the kind of functions that are present. Key nutrient cycles such as nitrogen, phosphorus, and carbon are intricate and affected by many factors. The researchers of this paper believed that by studying the plant traits and soil properties they could gain a better idea of these cycles and the way that they are affected. Their main goal was to determine whether or not the traits of co-existing grassland species grown with different growth strategies would have an effect/differ the soil properties. They measured the plant traits on fresh leaf, litter, and root material from each plot. Total C, N, and...

Words: 561 - Pages: 3

Free Essay

Ece 214 Week 1 Assignment ( Nutrition Issues )

...At: http://hwsoloutions.com/?product=ece-214-week-1-assignment-nutrition-issues Visit Our website: http://hwsoloutions.com/ Product Description PRODUCT DESCRIPTION ECE 214 Week 1 Assignment ( Nutrition Issues ), In this we are going to see about the malnutrition people and the defects that make them to be a malnutrition child in an effective manner. This also includes the children experiences in case of the developmental delays along with that of the weight-loss and illness effectively. This kind of issue arises as a result of the intake of protein along with that of the calories and various nutrients efficiently. Mostly all the orphaned as well as the institutionalized children may experience these form of the macronutrient and micronutrient deficiencies (Shamir, 2013). Thus it has the short term as well as the long term implication in an effective manner. The nutrient deficiencies will have various short-term implications in children and are given as Growth Implications Immune implications Proper health and nutrition is of critical importance to the growth and development of young children, yet many American children suffer from nutrition issues. Choosing either malnutrition or obesity, address the following: Discuss the short- and long-term impacts of this nutrition issue on children’s growth and development. In my early childhood the promotion in case of the physical and mental health has a negative impact as the appropriate nutrition was not obtained. This...

Words: 267 - Pages: 2

Premium Essay

Barley

...food does not interfere with the digestion and absorption of Green Barley nutrients. It is also best to mix Green Barley with cold or room temperature water, not with hot water because it will destroy the enzymes.    IS IT POSSIBLE TO OVERDOSE ON GREEN BARLEY?  No, Green Barley is not a drug but a whole food extract made from freshly squeezed barley grass , and fruit extract. It is unlikely that you would overdose on green salads.    WILL GREEN BARLEY BE HELPFUL FOR LOSING WEIGHT?  Yes. Green Barley contains only 20 calories per serving along with abundance of nutrients. If you are in a weight loss program, your body will benefit by taking Green Barley because it provides vitamins, minerals, amino acids, enzymes and proteins minus the fat and practically with no calories. It has been suggested that Green Barley can be a nutritious meal replacement.    CAN I USE GREEN BARLEY FOR FASTING?  Yes. Green Barley is a perfect supplement for fasting because it supplies essential nutrients that the body needs but is low in calories. It also contains proteins and complex carbohydrates that provides energy for metabolism.    WHAT DOES GREEN BARLEY DO FOR YOU?  Green Barley gives you superb natural nutrition in a bottle. It provides you with abundance of enzymes, vitamins, antioxidants, chlorophyll and other important phytonutrients in a natural medium. Good nutrition means delivering the necessary nutrients to your cells, neutralizing toxins and protection from free radicals.  ...

Words: 1501 - Pages: 7

Premium Essay

Hydroponics

...roponics [pic] Life sciences Year 2 IP 2012 Term 3 coursework Done by: Rananjay Singh Rathore(18) class: 2.12 [pic] [pic] The General Idea For the hydroponics project I attempted to grow the plant known as Kangkong. I acquired the seeds from a shop in Bishan known as the Oh Chin Huat Hydroponics Farm. Reason for choice of plant I chose this plant as I was under the impression that they were easy to maintain and were fast-growing. This proved to be slightly incorrect. Amount of nutrient solution used I used about 8 milliliters of nutrient solution, diluted in 900 milliliters of water. The ratio of nutrient solution to the water is as such because I wanted to give my plant(s) the extra “edge”. Basically, I assumed it would help boost my plant’s growth. It did not seem to do much however, in comparison to other specimens. Difficulties encountered Throughout this learning experience, I came across a string of ups and downs. Unfortunately, I mainly faced a lot of setbacks. I had trouble keeping some of the plants I grew alive. They would always start to wither. This greatly depleted my resources and required me to re-visit the respective hydroponic farm. So, my log of the plant’s growth is inaccurate due to human error caused by confusion. This problem is very minor, but nevertheless an obstacle. Due to the fact that I did not have a balcony at disposal, I had to place my plants on the dishwasher next to a window....

Words: 428 - Pages: 2

Free Essay

Roles of Snakes

...becomes rich in dissolved nutrients from fertilizers or sewage, thereby encouraging the growth and decomposition of oxygen-depleting plant life and resulting in harm to other organisms (Encarta dictionary 2007). This is one of the ecological problems that are affecting PAU thought others don’t see it as a problem. Thus, the essay will discuss further on how it is started and evidences of its existence, how to minimize or prevent it from eventuating, and how it affects the environment in which we live in and give a real case study of its effects. Eutrophication began to develop on the lakes of PAU when the campus department stopped cleaning the lakes in order to let the birds to lay their eggs on the flowers growing in the lakes. This is evident in lake two. This has led to eutrophication due to the overcrowding of plant life in the lakes. Some proof that the lakes are becoming entropic are that they smell, overgrowth of plants means the level of oxygen is depleted and less penetration of sunlight, algae are starting to cover the surface of the lakes. Therefore, this shows that lakes here at PAU are starting to become eutropic. Prevention is better than cure therefore it is better to prevent the lakes from becoming eutropic than to cure it after it has become eutropic. As stated in the article, ‘How to cure Eutrophication’ (2012, May 17) that a pond that has become eutropic is hard to rehabilitate. This is because not only will you have to fight the nutrients that are currently running...

Words: 627 - Pages: 3

Free Essay

Ece 214 Week 3 Assignment Health and Wellness Story

...ECE 214 WEEK 3 ASSIGNMENT HEALTH AND WELLNESS STORY A+ Graded Tutorial Available At: http://hwsoloutions.com/?product=ece-214-week-3-assignment-health-and-wellness-story Visit Our website: http://hwsoloutions.com/ Product Description ECE 214 Week 3 Assignment Health and Wellness Story, Nutritious Eating Introduction A nutrient is any component of food that our bodies require for biological functions, metabolism, growth, or maintenance. We need six major nutrients, which can be organized into three categories. The first category, macronutrients, includes those three that we need in large supply (grams daily). The micronutrients are needed in smaller amounts (micrograms to milligrams). Finally, there is water, which does much more than keep us hydrated., Child Development. Child development is the continuous process of growth of a child from birth until adulthood. The positive experiences children have in their early years are critical for progress in all domains of development, including cognition, emotion, language, motor skills, and social abilities. A child’s development can be measured by observing when the child reaches milestones in each of these areas. For instance, in the motor skills area, a young child often begins to walk at approximately 12–14 months, but it is not unusual for a child to begin as early as 9 months or as late as 18 months. Intellectual Development 0-2 years of age Children at this age learn by exploring with their hands and mouth....

Words: 369 - Pages: 2

Free Essay

Utilization of Biodegradable Kitchen Wastes Into Organic Fertilzer Using Earthworms (Lumbricus Terrestris

...terrestris were gathered. The resultant product, called "earthworm castings," were then sun-dried and passed through a fine sieve to remove foreign materials. Results showed that the casting from kitchen wastes and manure was highest in percentage total nitrogen, third highest in percentage total P205, and highest in percentage total K20. It was concluded that organic kitchen wastes can be converted into a competitive organic fertilizer using Lumbricus terrestris. The organic fertilizer produced by using earthworms can compete in terms of nutrient contents with other organic fertilizers. INTRODUCTION A good alternative in solving our garbage problem is vermicomposting, the process in which organic wastes are decomposed naturally with the use of earthworms. This research focuses on the efficient decomposition of organic kitchen wastes using Lumbricus terrestris and converting these wastes into organic fertilizer that can compete in terms of nutrient content with other organic fertilizers....

Words: 1216 - Pages: 5

Premium Essay

Molar Mass Of Fertilizer Essay

... Experimental Overview: In this experiment I was determining the amount of diphosphorus pentoxide in a sample of fertilizer, then comparing my results to what the fertilizer label states. By doing this experiment I was looking at quality control, and determining if the fertilizer has accurately distributed chemicals needed for healthy plant growth. There are three main Chemicals needed for strong, healthy plants; nitrogen, phosphorus, and potassium. Nitrogen is important for the plant’s growth, and for the growth of the plant’s leaves, while potassium and phosphorus help the roots grow stronger, and healthier, along with helping the plant produce flowers. When looking at the box of fertilizer you will find a set of numbers, such as, 15-30-15, or 10-20-10. These numbers represent the percentage of that particular chemical in the fertilizer. So in the case of 15-30-15, Nitrogen would take up 15% of the total amount of the fertilizer, phosphorus would take up 30%, and then potassium would take up another 15% of the total amount of fertilizer. Which is equal to having 30.0 grams of diphosphorus pentaoxide for every 100 grams of fertilizer. Since I was specifically looking at phosphorus content in this experiment, it was important for me to know the molar mass of P2O5 . To find the molar mass of P2O5 I obtained the molar mass of phosphorus and multiplied it by two, then added that to the molar mass of oxygen multiplied by five, this gave me 141.94 g/mol. Materials and Methods:...

Words: 1324 - Pages: 6

Premium Essay

Copypaster

...used to synthesize new molecules, and, in plants, water is essential for photosynthesis. Organisms have evolved various mechanisms for accumulating sufficient quantities of water, ions, and other nutrients and for keeping them properly balanced to maintain homeostasis. Plants absorb and transport water, nutrients, and ions from the surrounding soil via osmosis, diffusion, and active transport. Once water and dissolved nutrients have entered the root xylem, they are transported upward to the stems and leaves as part of the process of transpiration, with a subsequent loss of water due to evaporation from the leaf surface. Too much water loss can be detrimental to plants; they can wilt and die. The transport of water upward from roots to shoots in the xylem is governed by differences in water (or osmotic) potential, with water molecules moving from an area of high potential (higher free energy , more water)to an area of low water potential (lower free energy, less water). The movement of the water through a plant is facilitated by osmosis, root pressure, and the physical and chemical properties of water. Transpiration creates a lower osmotic potential in the leaf, and TACT (transpiration, adhesion, cohesion, and tension) mechanism describes the force that move water and dissolved nutrients up the xylem. Condition | Day 1 | Day 2 | Day 3 | Day 4 | Day 5 | Mass (g) | 78.00 | 79.90 | 71.75 | 67.71 | 46.71 | % change in mass | 0 | 1.9 | 6.25 | 10.29 | 31.29 | % change in...

Words: 416 - Pages: 2

Premium Essay

Criminal

...Project Food Diary: Day 1 Day of the Week:       |Food/Beverage |How Much You Ate/Drank | |      |      | |      |      | |      |      | |      |      | |      |      | |      |      | |      |      | |      |      | |      |      ...

Words: 658 - Pages: 3

Premium Essay

Acetogenic Spirochetes As A Major Source Of Energy

...3. Termites A. Spirochetes play a fundamental role when it comes to the nutrition of termites. They use acetate produced by microbes as a major source of energy and of Carbon. Spirochetes N2 fixation also plays an important role in the nitrogen economy of termites. The N2 fixation of these spirochetes is significant for a lot of different environments B. Acetogenic spirochete: -Spirochetes that have been previously cultured, posses the ability to conserve their energy by the oxidation of H2 -The reduction assay of acetylene assays for the cells’ nitrogenase activity Termite: -Oxidation of the Acetate produced by the hindgut microbes is one of the most important sources of energy and Carbon for termites. It supports 100% of the insects’ respiration requirements C. The capability of spirochetes to use Hydrogen as a reductant for acetogenesis helps by reconciling the mysterious domination of acetogenesis over methanogenesis as a Hydrogen sink in a lot of termites. The zone in which the most H is consumed is attributed to spirochetes, which progress amid protozoa in the anoxic central region. Also termites are known to produce more carbon dioxide than all the fossil fuels burned all around the world multiplied by 10. Termites that have a large acetogenic population are less of a concern because hindgut microbes use both hydrogen and carbon dioxide to produce the Acetate that they need as an energy source and for their respiration processes 7. The Martian 1. Mark Watney...

Words: 576 - Pages: 3

Premium Essay

Unit 21 P2

...P2 Describe the characteristics of nutrients and their benefits to the body.  Nutrients are made up of various chemical substances in the food that makes up someone’s diet, they are essential for life and a great number of nutrients in the diet is necessary for providing energy, building and maintaining body organs, and for various metabolic processes. People depend on nutrients in their diet because the human body is not able to produce many of these nutrients.   Nutrients are very important to the human diet but only if they meet these two characteristics, firstly, they must omit the nutrient from the diet leads to a nutritional deficiency and a decline in some aspect of health and if it is put back into the diet any symptoms of nutritional...

Words: 1445 - Pages: 6

Free Essay

Overlooked Essential Nutrients

...Water: An Overlooked Essential Nutrient | Presented by: Your Name | Today I am discussing the importance of water to encourage this office to provide water as the main beverage choice in this office. Water maintains body temperature, maintains blood volume, blood pressure and supports all cell functions. (Cherif, et al., 2010)Water is a valuable resource even in an office environment. You may not realize that an air-conditioned office is a very dry environment and will deplete your body of water. Working long hours can cause mild dehydration that will affect mental responses. The brain is 80% water. Loss of water will affect concentration and memory. Dehydration can cause headaches, tiredness and loss of concentration, affecting alertness. (European Hydration Institute)No other drink is as affective in hydrating the body like water. Gatorade and Powerade both have high levels of added sugar and salt. These should only be added to water for athletes, extreme heat situations or a sick person. | Daily Recommendations Experts vary on just how much water is required for daily hydration. “The Institute of Medicine determined that an adequate intake (AI) for men is roughly 3 liters (about 13 cups) of total beverages a day. The AI for women is 2.2 liters (about 9 cups) of total beverages a day.” However, most agree that eight 8 ounce glasses a day is an appropriate daily intake. ( Mayo Foundation for Medical Education and Research (MFMER), 2011) Gatorade and Powerade are...

Words: 317 - Pages: 2