• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Organisms and Environment Ecosystems
Organisms and Environment Ecosystems

... Long- term environmental changes, like climate change, can permanently alter an ecosystem, but over time the change, may cause genetic variations to become more favorable or less favorable in the new environment. If the adaptations to the new environment are not present or do not develop, population ...
Quantifying the biological carbon pump
Quantifying the biological carbon pump

... Start PhD study (2004) “Understanding the ‘organic carbon pump’ in mesoscale ocean flows” ...
Study Guide
Study Guide

... following questions. The drawings show the number of individuals of four plant species found at three sites. Each leaf represents one plant. ...
File
File

... 10. List the 5 things from your notes that cause terrestrial and aquatic ecosystems to change. 11. What is the difference between primary and secondary succession? Give an example of each. 12. Define pioneer species and climax community. Objective 3: The student will apply their knowledge of Populat ...
On the carrying capacity for large ungulates of African savanna
On the carrying capacity for large ungulates of African savanna

... ral ecosystems chosen for comparison. We tested these hypotheses by using our data on rainfall and the regression applied by Oesterheld et al. (1992) to calculate ANPP (ANPP = 0.5P−29, where P = annual precipitation in millimetres) (Lauenroth 1979). Relative to this index of ANPP, ungulate biomasses ...
TYPES OF SOIL Mansi Jain B.Ed VDIT SOIL
TYPES OF SOIL Mansi Jain B.Ed VDIT SOIL

... Residual soils are those that remain at the place of their formation as result of the weathering of the parent rocks. The depth of residual soils depends primarily on climatic conditions and the time of espouser. In temperate zones residual soils are commonly stiff and stable. An important charact ...
Sandy, Standard Assessment-Ecosystems and
Sandy, Standard Assessment-Ecosystems and

... thing for that area of Yellowstone? What would you expect the area to look like 20 years from now? What kind of succession is this? Explain all of your answers. (5 pts) ...
S R : ENERGY
S R : ENERGY

... To mitigate global climate change and act as a substitute for fossil fuels, bioenergy is becoming an important component of national energy portfolios. However, if not managed correctly, bioenergy crops could further accelerate land-use change and associated biodiversity loss, and their large-scale ...
Preliminary Petition to List Pteropod Species Limacina helicina as
Preliminary Petition to List Pteropod Species Limacina helicina as

... nutrient concentrations, predation, ocean acidification Decline in pH recent (~1990) so effects may not be significant yet ...
08 D human impact, conservation
08 D human impact, conservation

... www.coolwilliamstown.org/what_is.php ...
ECOLOGY The study of our ecosystems
ECOLOGY The study of our ecosystems

... • 7 billion people, population to exceed 10 billion before it stabilizes • Humans live in almost every kind of ecosystemon Earth • As population increases, impact on environment increases • As population increases, impact on environment increases ...
Chapter 3 Ecology 2009
Chapter 3 Ecology 2009

... characterized by distinct climate, and specific lifeforms ...
Chapter 3 Ecology 2009
Chapter 3 Ecology 2009

... characterized by distinct climate, and specific lifeforms ...
Ecological Principles
Ecological Principles

... • predator = organism that hunts, kills, and feeds off another • prey = organism that is hunted & killed ...
Ch 6 Humans in the Biosphere
Ch 6 Humans in the Biosphere

... • If is believed that the current warming is related to human activities that are adding CO2 and other greenhouse gases to the atmosphere • The burning of fossil fuels combined with cutting and burning of forests worldwide is adding carbon dioxide to the atmosphere faster than the carbon cycle remov ...
$doc.title

... (59)  The  global  human  population  is  closest  to   which  of  the  following?   A) 5  billion   B) 6  billion   C) 7  billion   D) 10  billion   E) 12  billion   (60)  Human  population  growth  over  the  last   4,000  years  can ...
Chapter 3: Communities, Biomes, and Ecosystems Biology, Biology R, and Biology Academic
Chapter 3: Communities, Biomes, and Ecosystems Biology, Biology R, and Biology Academic

... zone and the larval stages of their life cycle can be found there.  Turtles, snakes, and birds might prey on the animals that inhabit this zone. ...
Communities_ Biomes_ and Ecosystems
Communities_ Biomes_ and Ecosystems

... zone and the larval stages of their life cycle can be found there.  Turtles, snakes, and birds might prey on the animals that inhabit this zone. ...
Chapter 3: Communities, Biomes, and Ecosystems
Chapter 3: Communities, Biomes, and Ecosystems

... zone and the larval stages of their life cycle can be found there.  Turtles, snakes, and birds might prey on the animals that inhabit this zone. ...
Organisms and Their Environment
Organisms and Their Environment

... cycle carbon and oxygen through the environment. ...
Soils
Soils

... The Resource Management Plans (RMP) for Western Oregon will determine how the BLM-administered lands in western Oregon will be managed to further the recovery of threatened and endangered species, to provide for clean water, to restore fire-adapted ecosystems, to produce a sustained yield of timber ...
Honors Biology - LangdonBiology.org
Honors Biology - LangdonBiology.org

... 1. You should be able to define ecology and the different levels in an ecosystem: niche, population, community, ecosystem, biome, and biosphere 2. Be able to relate the ecological concept of niche to what you learned in evolution. (i.e., what happens when an organism tries to move into a niche that ...
Chapter 3 Miller.1
Chapter 3 Miller.1

... amount of energy available to each succeeding organism in a food chain or web. ...
Unit D Review - LD Industries
Unit D Review - LD Industries

... d. Soil bacteria that convert ammonia into nitrates and nitrites are known as denitrifying bacteria. 31. The following illustrates the sequence of events that led to a decline in the caribou population due to habitat fragmentation. I. Cleared forest areas attract moose to live in the area. II. Human ...
Notes - Humble ISD
Notes - Humble ISD

... the energy stored in an organism is passed to the next trophic level. ________% of the energy is either used by the organism to maintain ____________________ or lost as ___________ to the environment. Because of this, most food chains typically consist of only _____ or ______ trophic levels. Ecologi ...
< 1 ... 191 192 193 194 195 196 197 198 199 ... 290 >

Human impact on the nitrogen cycle



Human impact on the nitrogen cycle is diverse. Agricultural and industrial nitrogen (N) inputs to the environment currently exceed inputs from natural N fixation. As a consequence of anthropogenic inputs, the global nitrogen cycle (Fig. 1) has been significantly altered over the past century. Global atmospheric nitrous oxide (N2O) mole fractions have increased from a pre-industrial value of ~270 nmol/mol to ~319 nmol/mol in 2005. Human activities account for over one-third of N2O emissions, most of which are due to the agricultural sector. This article is intended to give a brief review of the history of anthropogenic N inputs, and reported impacts of nitrogen inputs on selected terrestrial and aquatic ecosystems.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report