We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byElvin Sember
Modified about 1 year ago
©2010 Elsevier, Inc. Chapter 14 Nitrogen,Sulfur, Phosphorus, and Other Nutrients Dodds & Whiles
©2010 Elsevier, Inc. FIGURE 14.1 Streamers composed of the sulfur-oxidizing bacterium Thermothrix at Mammoth Terrace, Yellowstone National Park (courtesy of R. W. Castenholz) and a transmission electron micrograph of a heterocyst (the site of nitrogen fixation in Nostoc and other cyanobacteria) attached to a smaller dividing vegetative cell with a diameter of approximately 8 μm. (Micrograph courtesy of N. J. Lang).
©2010 Elsevier, Inc. FIGURE 14.2 Nitrogen assimilation. This figure illustrates that nitrogen must be assimilated in the form of ammonium, and energy requirements for assimilation are N 2. NO 3 2. NO 2 2. NH 4 1.
©2010 Elsevier, Inc. FIGURE 14.3 A diagram of cyanobacterial vegetative cells, a heterocyst, adaptations to protect nitrogenase from deactivation by O 2, and mode of N transport from the heterocyst into vegetative cells.
©2010 Elsevier, Inc. FIGURE 14.4 Distribution of nitrate (A) and ammonium (B) in hypereutrophic Wintergreen Lake, Michigan, as a function of depth and time. Ice cover occurred from January to March. Darker colors represent higher concentrations. Contours are reported in μg liter 21. (Reproduced with permission from Wetzel, 1983).
©2010 Elsevier, Inc. FIGURE 14.5 Concentrations of nitrate in groundwater flowing from undisturbed prairie (top, solid line), nitrate in Kings Creek, Kansas (middle, a stream influenced by groundwater that passes under cropland), and discharge in the same stream (bottom). High nitrate is related to input of groundwater from below fertilized cropland that dominates flow during periods of low discharge, and these concentrations are substantially greater than found in pristine groundwater. (Data courtesy of Konza Prairie Long-Term Ecological Research site).
©2010 Elsevier, Inc. FIGURE 14.6 A conceptual diagram of the nitrogen cycle.
©2010 Elsevier, Inc. FIGURE 14.7 Correlation between nitrate intake and rates of gastrointestinal cancer. (After P. E. Hartman Reprinted by permission of Wiley–Liss, Inc., a subsidiary of John Wiley & Sons, Inc.).
©2010 Elsevier, Inc. FIGURE 14.8 A conceptual diagram of the sulfur cycle. A 5 assimilation.
©2010 Elsevier, Inc. FIGURE 14.9 A diagram of the phosphorus cycle.
©2010 Elsevier, Inc. FIGURE Concentration of silica as a function of depth and time in hypereutrophic Wintergreen Lake, Michigan (A), and oligotrophic Lawrence Lake, Michigan (B). Concentrations are given in mg liter 21, with darker contour fills corresponding to greater concentrations. (Reproduced with permission from Wetzel, 1983).
©2010 Elsevier, Inc. FIGURE The relationship between epilimnetic silicon and biomass of the diatom, Asterionella, in Lake Windermere, England. Note how decreases in dissolved silica correspond with high densities of diatoms. (Data from Lund, 1964).
©2010 Elsevier, Inc. FIGURE A conceptual diagram of the iron cycle.
©2010 Elsevier, Inc. FIGURE Relationship among redox gradients, dissolved oxygen, nutrient concentrations, and functional groups of microorganisms responsible for biogeochemical fluxes. This figure illustrates the steep gradients that occur at oxic/anoxic interfaces, and how such interfaces are a hot spot for biogeochemical activities.
©2010 Elsevier, Inc. Chapter 3 Movement of Light, Heat, and Chemicals in Water Dodds & Whiles.
Chapter 10 Ecosystems in a Heterogeneous World © 2013 Elsevier, Inc. All rights reserved. From Fundamentals of Ecosystem Science, Weathers, Strayer, and.
© 2011 Pearson Education, Inc. Lecture Outlines Chapter 5 Environment: The Science behind the Stories 4th Edition Withgott/Brennan.
Click on a lesson name to select. Chapter 2 Principles of Ecology Section 1: Organisms and Their Relationships Section 2: Flow of Energy in an Ecosystem.
Ecosystems Reading: Freeman Chapter 54. n An ecosystem is the unit composed of all the living things in a single place at a given time, in addition to,
Chapter 6 – Aquatic Environments - Objectives 1.Be able to describe the four types of aquatic habitats for microbes 2.Be able to describe the microbial.
Ecosystems: Components, Energy Flow, and Matter Cycling Chapter 3 The Earth as a System Ecosystems Food Webs and Energy Flow Productivity in Ecosystems.
E 5: Dissolved Oxygen in Water. BOD device This device is used to measure the dissolved oxygen (DO) in the water.
Erratic. boulder transported and deposited by a glacier having a lithology different than the bedrock upon which it is sitting.
Chapter 4 Ecosystems: What Are They and How Do They Work?
Diffusion, osmosis, and the cell membrane. A membrane is a collage of different proteins embedded in the fluid matrix of the lipid bilayer. Membranes.
Chapter Five Weathering, Soil, and Mass Movements.
Unit 02 Life on Earth I. Chapter 3 The Big Picture: Systems of Change.
Topic 2: The ecosystem How does the role of instrumentation circumvent the limitations of perception? Can environmental investigations and measurements.
Cycles of Matter. Unlike the one-way flow of energy, matter is recycled within and between ecosystems. Elements pass from one organism to another and.
Transport and Bacterial Cells Uptake of Nutrients and Key molecules Microbiology 2008.
An ELECTRON DOT DIAGRAM is a model of an atom in which each dot represents a valence electron. Draw dot diagrams for H, He, Be, and Br!
Ch. 54 Ecosystems. An ecosystem consists of all the organisms living in a community as well as all the abiotic factors with which they interact. The dynamics.
NUTRIENT CYCLES READINGS: FREEMAN Chapter 54. NUTRIENT CYCLES: ECOSYSTEM TO ECOSPHERE Nutrient cycling occurs at the local level through the action of.
Chapter 14 - Biogeochemical Cycling Objectives Be able to give an explanation of why biogeochemical cycles are important Be able to explain what the GAIA.
CH 55 & 56 – Energy flow in Ecosystems. Overview: Ecosystems An ecosystem consists of all the organisms living in a community, as well as the abiotic.
Click on a lesson name to select. Chapter 5 Biodiversity and Conservation Section 1: Biodiversity Section 2: Threats to Biodiversity Section 3: Conserving.
Volcano Hw and RQ. Questions Could Mt. St. Helens erupt again? Does the lava come from the liquid core of the Earth? Is every mountain a volcano? How.
BIOLOGY Topic 2 Topic 2. Topic Outline Chemical Elements and Water Chemical Elements and Water Chemical Elements and Water Chemical Elements and Water.
GREGORY ALBERT E. GALICINAO DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING MICHIGAN TECHNOLOGICAL UNIVERSITY.
Organisms are mainly composed of C, H, O & N Living organisms also contain S and P as well as several other elements These elements compose the macromolecules.
Ag 508 Aquatic Biology and Environment F Dr. John A. Finn, F Room I1, TOB2 (Agricultural and Food Economics building, opposite old building of Dept of.
Topic 5 Ecology and Evolution. Define Species Habitat Population Community Ecosystem Ecology Autotroph Heterotroph Consumer Detrivore Saphrotroph.
1 Role of monitoring programmes developed under the Water Framework Directive for future data flow Tim Lack.
© 2016 SlidePlayer.com Inc. All rights reserved.