Documents about Biogeochemical Cycles
lect6....1
UC Riverside, BIOL 5c
Excerpt: ... Biogeochemical Cycles : see pp. 1196-1197 Carbon Cycle Nitrogen Cycle Lecture 7 Handouts 1 Phosphorus Cycle Lecture 7 Handouts 2 Water Cycle Lecture 7 Handouts 3 ...
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26_questions_MicroEcol
UCSC, BIO 119
Excerpt: ... Study Questions and Answers for Microbial Ecology Lecture 1. What is a biogeochemical cycle? How can prokaryotes influence biogeochemical cycles ? 2. What is meant by culture-dependent approaches to microbial ecology? How about culture-independent approaches? Which approach is better? 3. What is FISH? Is FISH a culture-dependent or independent method? 4. How does total bacterial counts done with a microscope differ from enumeration by viable plate counts? 5. What are the four approaches to microbial ecology presented in the lecture? Be able to articulate and give examples for each approach. 6. You did PCR for the 16S rRNA gene from 10 soil samples and got a 1500 bp band on a gel, describe how you could determine the genetic diversity of the DNA in the PCR tube by clone library and by DGGE. Which method would be faster? Which method would give you more conclusive results about the types of organisms in the soil samples? 7. What is metagenomics? Why is this a culture-independent approach used in microbial ecolog ...
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BIOL4120_Lect20
TN State, BIOL 4120
Excerpt: ... BIOL 4120: Principles of Ecology Lecture 20: Ecosystem Ecology Dafeng Hui Room: Harned Hall 320 Phone: 9635777 Email: dhui@tnstate.edu Outline (Chapter 22) Biogeochemical cycles Biogeochemical cycles : Bioliving things; georocks and soil; chemicalprocesses involved. All nutrients (or elements) flow through from the nonliving to the living and back to the nonliving components of the ecosystem in a cyclic path 22.1 Two major types of biogeochemical cycles All nutrients follow biogeochemical cycles Two types of cycle Gaseous Major reservoirs are atmosphere and oceans Global in nature, important gases Oxygen 21% Nitrogen 78% Carbon of carbon dioxide 0.03% Sedimentary Major reservoirs are soil, rocks and minerals Rock phase and salt solution phase Salt solution is the available form Phosphorus Metals, eg Calcium, Magnesium, etc Some cycles are hybrid Sulfur (S) Major pools in Earth's crust and atmosphere Two major types of biogeochemical cycles Common features: Sh ...
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23ecosystems
University of Illinois, Urbana Champaign, IB 102
Excerpt: ... ecies. Succession along Lake Michigan Tim e Primary Succession Disturbances that do not produce or leave behind soil Secondary Succession Disturbances that leave soil intact Why do communities change during succession? Ecosyste m All the populations in an area as well as the physical environment. Biotic and abiotic. Abiotic Components energy flows (linear path) biogeochemical cycles water (H2O) nitrogen (N2) phosphorus (P) carbon (C) Ways to Capture Energy Producer (autotroph) Ways to Capture Energy Consumer (heterotroph) Ways to Capture Energy Decomposer (heterotroph) Energy Flows Solar energy Chemical bond energy Waste energy Sun Clove r Bunn y Decomposer Wolf Primary Productivity amount of solar energy captured and held in plants. Measurement of productivity = the amount of biomass in an area. Gross vs. Net Primary Productivity Gross P P = amount of energy captured through photosynthesis. Net P P = amount of energy captured through photosynthesis minus that lost th ...
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19-Iron
Georgia Tech, EAS 4300
Excerpt: ... vti_encoding:SR|utf8-nl vti_timelastmodified:TR|06 Nov 2006 16:35:44 -0000 vti_extenderversion:SR|12.0.0.4518 vti_author:SR|NEO891A\Administrator vti_modifiedby:SR|NEO891A\Administrator vti_timecreated:TR|06 Nov 2006 16:35:44 -0000 vti_cacheddtm:TX|06 Nov 2006 16:35:44 -0000 vti_filesize:IR|3561984 vti_cachedtitle:SR| Iron and Biogeochemical Cycles vti_title:SR| Iron and Biogeochemical Cycles vti_backlinkinfo:VX|lectures.html ...
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Study Questions Vitousek et al 1997
WVU, BIO 463
Excerpt: ... Fall 2008 Bio. 463 STUDY QUESTIONS FOR: Vitousek et al. 1997 Provide one quantitative example, that you find particularly striking, for how human activities strongly affect each of the following: Land transformations The Oceans Biogeochemical cycles Biotic changes They conclude that recognizing the global effects of human activities should lead us in 3 directions. What are they and why do they feel they are important? ...
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rasmussen
Wyoming, PERUGIA 07
Excerpt: ... 10548 - O Biogenic Ice Nuclei Studies Proposed for the BEACHON Project. Rasmussen, Roy TIIMES , NCAR Alex Guenther NCAR Box 3000 Boulder Colorado USA 80307 Key to improving the predictability of earth system behavior over the time scale of months to a decade is an improved understanding of the coupling between water, energy and biogeochemical cycles in a multi-scale modeling framework. Credible predictions at these time scales require coordinated modeling, observations and process studies that explicitly address the coupled water, energy and biogeochemical cycles at multiple temporal and spatial scales. This capability is particularly important for semi-arid landscapes where biogeochemical cycles are limited by water and nutrients and are threatened by drying associated with climate change. Water-limited landscapes cover half of the earths land surface and include some of the fastest growing population centers. Trace gases and aerosols emitted by a water-limited biosphere are key points of interaction betwee ...
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Biogeochem
Bates, ABACUS 108
Excerpt: ... Biogeochemical cycles Biogeochemical cycles describe the chemical and physical transformation of elements on earth. Many key processes in these cycles are mediated by biological organisms, hence the bio in biogeochemical. Biogeochemical cycles are closed (to a good approximation). Elements are, for the most part, neither destroyed nor created. Biogeochemical cycles describe the pathways by which energy from the sun is assimilated by living organisms and stored as chemical energy. They are essential for recycling material. Without them, life would run out of stuff it needs. While there are, for the most part, no net changes in the amount of an element, fluxes in and out of compartments are changing due to the activities of humans. A key question for modern scientists is to gauge how significant these changes are. When we study biogeochemical cycles , we focus on the elements that are essential for life. Hydrogen, carbon, oxygen, nitrogen, sulfur and phosphorous are the elements that constitute the bulk of all l ...
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Lecture Notes
LSU, RNR 1001
Excerpt: ... Study Guide - Lectures for Exam 2 Ecological concepts Biosphere Energy flow through ecosystems Global warming and cooling Climate history and climate projections Greenhouse Effect and responsible gasses Effects of global warming Sea level rise Plant and animal extinction Weather changes Movement of diseases to warm areas Movement of insect pests to warm areas UN Framework Convention on Climate Change 1992 Kyoto Protocol 1997 Unanswered questions clouds, ocean productivity, loss of ice caps and forests? Nutrients, macro and micro Nutrients recycle through ecosystems Nitrogen fixation and nitrification Biogeochemical cycles Species Population Community Habitat, important habitat functions Habitat complexity and carrying capacity Environment, biotic and abiotic Ecosystems, characteristics of ecosystems Terrestrial ecosystems differ by rainfall, temperature, soil nutrients, and elevation Aquatic ecosystems differ by depth, nutrient concentration, flow, light penetration, salinity, and depth Ecotones ...
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Lecture24_Biosphere3
Georgia Tech, EAS 1600
Excerpt: ... ygen. For example, controls on the burial of organic carbon in ocean sediments: Atmospheric Oxygen (-) Burial of Organic C in ocean sediments Deep-ocean Oxygen or controls on forest fires The Terms of Biogeochemical Cycles Biogeochemists often describe biogeochemical cycles using a so called `box model" approach. This approach makes use of three basic and interrelated terms: 1. Reservoir Amount [CX ] the amount of material "X" (usually an element) present in a given component of the Earth System. > typical units: tons (also Mtons or Tg) 2. Flux [FX ] the rate at which the material flows into (inflow) and out of (outflow) the reservoir (not to be confused with radiant flux) > typical units: tons/year 3. Residence Time [TX ] the average length of time the substance remains in the reservoir > typical units: years Atmospheric Oxygen (-) Storage of Organic C in soils Forest Fires To understand how these work we need to take a look at the C Cycle in some more detail - our next topic These q ...
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PHYS575_Notes_01_Overview_Part1
George Mason, PHYS 575
Excerpt: ... PHYS-575/CSI-655 Introduction to Atmospheric Physics and Chemistry Lecture Notes 1 Part 1 Earth: The water planet Take a deep breath Some basics ideas/concepts Why study the atmosphere? Climate change issues Survey of planetary atmospheres 04/29/09 1 Earth The Water Planet Is there anything in this picture that is not influenced by water? Is there anything in this picture not influenced by life? Is there anything in this picture not influenced by the atmosphere? 04/29/09 2 What is Atmospheric Science? Atmospheric Science is a relatively new, applied discipline that is concerned with the structure and evolution of planetary atmospheres and with the wide range of phenomena that occur within them. Atmospheric Science includes: - weather and weather forecasting - climate and climate change - atmospheric chemistry - atmospheric observations Atmospheric Science overlaps many traditional disciplines: - physics, chemistry, geology, biology, astronomy (e.g. biogeochemical cycles of carbon, oxygen, n ...
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Schedule-2005-1.6
Washington, FISH 490
Excerpt: ... FISH/MICROM 490 Course Schedule 4/26/2009 Week 1 Lecture Topics Monday, Wednesday, Friday Microbiology Basics 28-Mar Mon Course introduction. Aquatic environments. (1) Tues 30-Mar Wed Culturing microorganisms. Molecular phylogenetics. (2) 1-Apr Fri Microbial metabolism (3) Date Day Laboratory Exercises (1) Introduction to microbiology techniques and media making 2 4-Apr 6-Apr 8-Apr Biogeochemical Cycles and Food Webs Mon Biogeochemical cycles : C (4) Tues Wed Biogeochemical cycles : C, Part 2 (5) Fri Protists. Heterotrophic and Photosynthetic (6) (2) Enumeration of bacteria in water and sediments 3 11-Apr Mon Biogeochemical cycles : N (7) Tues Wed Biogeochemical cycles : S (8) Fri Exam 1 (3) Phytoplankton enrichment and enumeration. Chlorophyll a analysis 13-Apr 15-Apr 4 18-Apr Mon Biogeochemical cycles : P and Si cycles. Biofilms (9) Tues 20-Apr Wed Measurement of biomass and microbial activity (10) Degradation of Environmental Pollutants 22-Apr Fri Environmental pollution. Degradation of petrol ...
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NCDandDZ
University of Illinois, Urbana Champaign, IB 102
Excerpt: ... Integrative Biology 102: Lecture Outline Nutrient Cycle Disruption and Dead Zones Lecture Objectives At the end of this lecture (and after studying the texts), you should be able to: 1. Explain how human activities have altered the nitrogen, phosphorus and carbon cycle. 2. Understand the connection between application of nitrogen fertilizers to terrestrial ecosystems and the nutrient status of downstream aquatic ecosystems. 3. Explain what human driven nitrogen fixation is. 4. Understand the connections between nitrogen, phosphorus and carbon cycles. Websites: From the Ecological Society of America Nonpoint Pollution of Surface Waters with Phosphorus and Nitrogen Human Alteration of the Global Nitrogen Cycle: Causes and Consequences Nutrient Pollution of Coastal Rivers, Bays, and Seas Impacts of Atmospheric Pollutants on Aquatic Ecosystems Biogeochemical Cycles Terms Oligotrophic Eutrophic Cultural eutrophication Dead zones Hypoxia Ammonium 1. Disruptions in nutrient balance *Causes and contributors Nitrat ...
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cycles
Bowling Green, EDHD 611
Excerpt: ... Notes will vary based upon individual class concept attainment. These notes will be modified with examples and more in depth information at the teachers discretion. Cycles of Matter Section 3-3 Recycling in the Biosphere Unlike the one-way flow of energy, matter is recycled within and between ecosystems. Elements, chemical compounds, and other forms of matter are passed from one organism to another and from one part of the biosphere to another through Biogeochemical Cycles . Biogeochemical Cycles connect 3 aspects of the biosphere, which are: 1. Biological 2. Geological 3. Chemical Water Cycle Evaporation is the process by which water changes from liquid form to an atmospheric gas. Water can also enter the atmospheric by Evaporating from the leaves of plants in the process of Transpiration. Nutrient Cycles Nutrients are the chemical substances that an organism needs to sustain life. Every living organism needs Nutrients to build tissues and carry out essential life functions. Like water, Nutrients are pass ...
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lecture1_course_overview
Minnesota, GEO 4402
Excerpt: ... Biogeochemical Cycles in the Ocean (GEO 4402 Lecture 1: Course overview) 17 January, 2006 Katsumi Matsumoto Role of life and biogeochemistry in modulating Earth's climate and surface environments: 1) Effective temperature of the planet 1) Chemical equilibrium of the atmosphere Effective temperature of the planet Definition: planet's temperature that would exist near its surface under radiative balance with the incoming solar radiation Ou tgo ing LW Earth In i om c n SW g Stop 1 Hot=shorter Cold=longer Stop 2 Greenhouse gases absorb radiation Water vapor is the most important greenhouse gas Planetary energy balance Planetary climatology Allows liquid water (essential to life) to exist. Coincidence? Faint Young Sun Paradox Stellar evolution : Sun is much brighter now than before (S0 was smaller by 30% in early days) Geology : Earth maintained liquid water for 2.8 Byrs How could Earth maintain relatively mild temperatures? Scientists : More greenhouse gases, primarily CO2 Negativ ...
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3. Flows
Clark University, GEOG 180
Excerpt: ... Prof. Turner The Earth Transformed 9.6.07 I) Biosphere a Coined by Edward Suess b Boundaries defined by V. Vernadsky c The portion of earth and atmosphere that sustains life; a thin envelope for life, composed of the near subsurface, surface and lower atmosphere d Earth system includes biosphere e Only biophysical condition that can sustain life as we know it (i) Biosphere sustained by the flow of energy and matter, and the cycling ( biogeochemical cycles ) of chemical elements or molecules through the earth system (ii) These flows & cycles (use flow to refer to both) involve terrestrial surfaces, oceans, and atmosphere [+ space & deep earth] [Ex. Hydrologic cycle] (iii) Biogeochemical cycles have sinks stores the element for long periods of time (iv) Flows & cycling maintain balances (amount in each portion of the earth system) that render biosphere as we know it (e.g. climate) Natural variation (e.g. ice ages) Human interference (v) Major cycles: C, N, S, H2O f Inter-tropical convergent zone (i) Exponential ...
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ecology
Auburn, BIOL 1020
Excerpt: ... iche, resource partitioning, and character displacement 2. predation Describe how these defenses can help animals avoid predation: camouflage warning coloration Batesian mimicry Mllerian mimicry 3 of 5 3. herbivory 4. parasitism 5. mutualism BIOL 1020 ECOLOGY UNIT LECTURE NOTES What is the difference between obligate and facultative mutualism? 6. commensalism D. What is symbiosis? Which interspecific interactions are types of symbiosis? E. What is keystone species and a pivotal niche? F. What is a food web? How do energetic limits affect food webs/chains? G. Describe ecological succession, primary succession, and secondary succession. IV. ecosystems A. Diagram the biogeochemical cycles of B. water C. carbon D. nitrogen E. phosphorus F. Describe how biomagnification (biological magnification) of a toxin works in an ecosystem. G. How we almost killed ourselves: the ozone hole story (see fig 55.25) 4 of 5 BIOL 1020 ECOLOGY UNIT LECTURE NOTES 1. Describe the importance of the ozone laye ...
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03 ecosystems
University of Illinois, Urbana Champaign, IB 102
Excerpt: ... eb 4. Matter cycles * Decomposers * Human food chain * Types and functions of organic compounds * Biogeochemical cycles o Carbon + Anthropogenic changes and effects o Nitrogen + Anthropogenic changes and effects * Limiting factors 5. Ecosystem services For the next lecture on Community Relationships, read Ch. 4. Be ready to answer these questions: * In what kind of community relationships are you involved? * What is important about biological diversity? ...
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chapter06_lecture
Wisc Stevens Point, GEOG 100
Excerpt: ... 6 THE FLOW OF MATTER IN THE ENVIRONMENT Why Does It Matter? PowerPoint Lecture prepared by Gary A. Beluzo STUDENT LEARNING OUTCOMES After reading this chapter, students will be able to Describe how the availability of matter limits the growth of autotrophs and heterotrophs. Compare and contrast food webs and biogeochemical cycles . Describe how changes in one cycle affect storages and fluxes in another cycle. Explain how biogeochemical cycles can be used to describe many human impacts on the environment. Explain how the rate of the nonspontaneous flows and residence times affect the rate at which an atom of carbon, nitrogen, or phosphorus can complete one turn through their respective cycles. Copyright 2007 McGraw-Hill Publishing Company Animals Eating Plants In general, flow of matter is tightly linked to the flow of energy, with some exceptions The Venus flytrap derives little or no energy from fly Green leaves provide it with food Insects are a significant so ...
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final%20lec_ecology_pop_global%20climate%20change
Cal Poly, BIO bio213
Excerpt: ... system: Ecosystem The community and the physical environment Biosphere: Biosphere All the ecosystems on Earth combined Three hundred trout are needed to support one man for a year. The trout, in turn, must consume 90,000 frogs, that must consume 27 million grasshoppers that live off of 1,000 tons of grass. - G. Tyler Miller, Jr., American Chemist (1971) Categorizing Organisms By What They Eat Producers are eaten by: Primary consumers (herbivores) which are herbivores) eaten by: carnivores) Secondary consumers (carnivores which carnivores are eaten by: Tertiary consumers which are eaten by Quaternary consumers which are eaten by No Energy left! Biogeochemical Cycles Energy does not cycle through the ecosystem due to the laws of thermodynamics Many resource do biogeochemical cycles Includes the water cycle, carbon cycle, nitrogen cycle, phosphorus cycle, etc The Water Cycle The Nitrogen Cycle Atmospheric nitrogen = N2 Unavailable to plants Ba ...
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bio105studyguide
Grand Valley State, BIO 105
Excerpt: ... 4 numbers) for a) exponential growth b) arithmetic growth 35. How has human activity disturbed biogeochemical cycles ? 24. Recent human growth most closely resembles which type of growth? 36. Define a system. 25. What is biotic potential? 37. Briefly state the theory of evolution. 26. Why is age structure an important factor in population dynamics? 38. List two factors that affect the distribution of terrestrial biomes on the Earth. 27. List 5 factors that regulate population growth. 39. Name a high-productivity ecosystem. Name a lowproductivity ecosystem. What is productivity? 28. Why is a cycle of carbon, for example, called a biogeochemical cycle? 40. Where will the most population growth occur in the next century? 29. Describe the k-selection reproductive strategy. Give an example organism. 41. What is ecoterrorism? 30. Define carrying capacity. 42. What are the three types of rocks. Provide a brief description for each type. 31. Given a growth rate of 5% how long with it take a populatio ...
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Ecology 101 Introduction I
Columbia, P 6322
Excerpt: ... Welcome to Ecology 101 Fall 2004 Premise of course: Ecosystems approach a. Physical attributes b. Energy flow c. Productivity Readings: Required: The Diversity of Life, Edward O. Wilson Sand County Almanac, Aldo Leopold Ecology: A Bridge Between Science and Society, Eugene P. Odum Highly Recommended: Science Times Science Nature Grading 1. Midterm: 50% 2. Final: 50% Examination format: Multiple choice, true/false, short answer, essay Schedule and Lecture Topics: September Introduction: Basic Principles I Origin and Evolution of Ecosystem Basic Principles II Species and the Concept of Nich Energy Flow and Trophic Levels Biogeochemical Cycles I October Biogeochemical Cycles II Ecosystems: Lotic Ecosystems (Rivers) MIDTERM EXAM Lentic Ecosystems (Lakes) Ecotones: Estuaries and Wetlands November The Oceans Coral Reefs Rainforests December Hardwood and Boreal Forest FINAL EXAM Websites: Required: www.http:/ci.columbia.edu/ci/eseminars/1111s_detail.html www.http:/streamecology.org www.http:/IES.or ...
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BIOLOGY 220 LECTURE #10 - Notes
Allegheny, BIO 220
Excerpt: ... l atmosphere and it tends to stay local, collect, and come back down as precipitation. Rainforests stay wet, deserts stay dry. Note the importance in some biomes of vegetation in returning water to local atmosphere (via transpiration). o Groundwater subsurface water o Aquifer permeable water-bearing rock yielding water to wells. Site for groundwater. Water is in the rock (very porous water leaks into the rock) WATER CYCLE 10 (no title) Remember, we rely on water and its properties in general to maintain our physiological processes and define where organisms can live. Water is involved biogeochemical cycles throughout the ecosystem that move water and take other elements with it. These biogeochemical cycles allow all organisms to get the elements and energy they need to survive: o Erosion of materials o Decomposition o Transport These all involve water as a medium We are able to move things that we need like Carbon, Phosphorus, Nitrogen from these storage sources where they are locked up and mov ...
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11Apr08
University of Florida , MCB 3020
Excerpt: ... Overview of microbial ecology There are currently 1030 prokaryotes on earth Microbes are metabolically active and change the environment they live in Microbes responsible for levels of O2, CO2 and N2 in atmosphere Where microbes live (Fig. 18.1) Studying microbes in the lab Most microbes from environment cannot be cultivated (<1%) Enrichment cultures can help in some cases Culturing often changes phenotype Many microbes only grow in communities Enrichment cultures Modern approaches to the study of microbial ecology FISH Immunofluorescence microscopy FACS PCR Micro-autoradiography Biogeochemical cycles Carbon Oxygen Nitrogen Sulfur Phosphorus Carbon cycle http:/earthobservatory.nasa.gov/Library/CarbonCycle carbon CO2 + H2O = CH2O + O2 Fixed carbon degraded to CO2 and CH4 (methanogens) CH4 oxidized to CO2 by methanotrophs More C in humus than in living orgs In atmosphere: CO2:CH4:CO = 725:3:0.2 but CH4 is a 20X better greenhouse gas Carbon res ...
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