Biological Science
5th Edition
ISBN: 9780321743671
Author: Scott Freeman
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 56, Problem 13TYPSS
Suppose you had a small set of experimental ponds at your disposal and an array of pond-dwelling algae, plants, and animals. How could you use a radioactive isotope of nitrogen to study the effects of fertilizer runoff in these experimental ecosystems?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
You decide to perform a simple experiment to determine whether nitrogen or phosphorus is a more limiting nutrient in a pond in your backyard. Using a curtain that does not allow water, nutrients, or organisms to pass through, you divide your pond into four equal-sized quadrats (like a pie with four pieces). You randomly apply one of the following treatments to each quadrat: no nutrients (control), nitrogen only, phosphorus only, nitrogen and phosphorus. After 10 days, you measure net primary productivity (NPP) in each quadrat of your pond. You find the following results: Control NPP = 1.2 g C/m2/d; nitrogen only NPP = 1.3 g C/m2/d; phosphorus only NPP = 2.8 g C/m2/d; nitrogen and phosphorus added NPP = 2.8 g C/m2/d. Which is true about nutrient limitation in your pond?
Nitrogen and phosphorus are both limiting nutrients
Nitrogen is the only limiting nutrient
Neither nutrient is limiting
Phosphorus is the only limiting nutrient
Wastes from duck farms used to wash into two shallow-water bays on Long Island, New York. The wastes, rich in nutrients such as nitrate and phos-phate, polluted the water. What do you suppose was the immediate effect of the pollutants? Can you speculate on the likely effects on the commercially valuable shellfish of the area?
Suppose you want to compare the species of bacteria that exist in a polluted stream with the species that exist in an unpolluted stream. Traditionally, bacteria have been identified by growing them in the laboratory and comparing their physical and biochemical properties. You recognize that you will be unable to culture most of the bacteria that reside in the streams. How might you go about identifying the species in the two streams without culturing them in the laboratory?
Chapter 56 Solutions
Biological Science
Ch. 56 - Ture of false? An ecosystem comprises a community...Ch. 56 - Which of the following ecosystems would you expect...Ch. 56 - Which of the following is normally the...Ch. 56 - Prob. 3TYKCh. 56 - Devegetation has what effect on ecosystem...Ch. 56 - Prob. 4TYKCh. 56 - Prob. 7TYUCh. 56 - Explain why decomposition rates in a field in...Ch. 56 - Why are the open oceans nutrient poor? Why are...Ch. 56 - Prob. 8TYU
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of the following best describes how using fertilizer would affect the nitrogen cycle? The use of fertilizer would result in more nitrogen in the groundwater. The use of fertilizer would result in less nitrogen in the soil. The use of fertilizer would result in more phosphorus in the soil. The use of fertilizer would result in more nitrogen being added to the carbon cycle.arrow_forwardOrganisms that damage crop plants are the most costly of introduced species. Weeds, pathogenic microbes, and arthropods that attack crops together account for half of the costs documented by Pimentel and his colleagues. What steps can we—farmers, governments, and all of us as a society—take to minimize the impacts of invasive species on crops?arrow_forwardHow might it be possible to cleanse an aging eutrophic lake? Consider chemical, biological, and physical approaches in your answerarrow_forward
- I’m not how to read this graph can you help find the answer?arrow_forwardcan someone please help me to answer questions a-b thank you 1In a trophic pyramid, each level is smaller than the one below. a) What does the size of each level represent? b) How much energy is transferred from level to level? c) Explain why the levels get smaller as the trophic pyramid goes up.arrow_forwardHow does water pollution affect the Phosphorus, Carbon, and Nitrogen Cycles? My question is how does water pollution affect the Phosphorus, Carbon, and Nitrogen Cycles, not how does the phosphorus, Carbon, and Nitrogen Cycles cause water pollution. Please answer the question correctly.arrow_forward
- Can you please help with this difficult question?arrow_forwardHeavy Metals were identified as environmental pollutants much earlier than most trace level organic pollutants. What is one or more? Describe if we have mitigated exposures to same in our region?arrow_forwardAnswer question 20 and 21.arrow_forward
- Question 42 In which of these biomes is fire least important? Question 42 options: A) chaparral. B) temperate grasslands. C) alpine tundra. D) conifer forest. Question 43 Transpiration is the process by which Question 43 options: A) water is taken in by the roots. B) water evaporates from the stomata. C) water loss is prevented during photosynthesis. D) water enters an aquifer. Question 44 Lakes become stratified because Question 44 options: A) waters of different density tend to not mix. B) the epilimnion lies above the hypolimnion. C) the thermocline disappears. D) oxygen is limiting.arrow_forwardYour friend's cottage is on a lake that has experienced numerous blooms of cyanobacteria (blue green algae) in recent years. Which chemical is most likely responsible for these blooms? methane phosphorus iron nitrogen carbon dioxide Previous PageNext Pagearrow_forwardWhich statement offers the best explanation of how deforesting hubbard brooks watershed (W2) affected the nitrogen cycle? 1. Denitrification rates increased, resulting in a decrease in the export of ammonium 2. Microbial immobilization rates increased, resulting in a decline in stream nitrogen 3. Mineralization rates increased, causing the export of ammonium to increase 4. plant uptake nitrogen stopped, resulting in an increase in the export of nitratearrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
Biology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
Biodiversity hotspots and functional diversity; Author: Stockholm Resilience Centre TV;https://www.youtube.com/watch?v=Gr_eIsFOKr4;License: Standard Youtube License