Episodic Acidification and Changes in Fish Diversity in Pennsylvania Headwater Streams By Matthew T. Moran.

Slides:

Advertisements

Similar presentations

How Do We Measure Water Quality????

Advertisements

Effects of Watershed Acidification on Soil Water and Stream Water Chemistry.

Water Science Electroneutrality, pH, Alkalinity, Acidity

EVPP 550 Waterscape Ecology and Management Professor R. Christian Jones Fall 2007.

Carbon Dioxide and Carbonate system Carbon cycle - Why is it important? 1. Regulates temperature of the planet 2. Important for life in the ocean 3. Regulates.

Acid Lakes from Lignite Mines Dan Henderson. Lignite  Brown/soft coal.  Used for steam electric power generation.  Mined in open pits.  Production.

Water Chemistry: pH. pH pH is the measure of hydrogen ions (H+) –Negative logarithm of the H+ concentration Higher the pH, the lower the H+ concentration.

Section 3: Acid Precipitation

Formation and Treatment

 DO level: 9.8 ppm  Hardness: 110ppm CaCo 3 (this is high due to limestone aquifers, not a bad thing)  Alkalinity: ppm (also high due to limestone.

What Causes Acid Precipitation?

Human Impact on Ecosystems: Acidification SVN3E. Acid precipitation Rain and snow is naturally slightly acidic with a pH of approximately 5.6.

The Urban Watershed Unit 1, Topic 1. 1 Urban vs. Suburban vs. Rural.

Basics River continuum – transition from headwaters to large river Main variables on life: temperature, bottom type and water chemistry Temperature is.

pH What is the pH of an ACID? Which type of OXIDE forms an ALKALI? Which type of OXIDE forms an ACID? What happens to the pH of an ACID when it is diluted?

The Carbon Cycle. Carbon Dioxide and Carbonate system Why is it important? 1. CO 2 regulates temperature of the planet 2. Important for life in the ocean.

Stream Classification & Abiotic Factors Watershed A contiguous area that is contained with an elevated ridge such that rainfall within the area flows.

Bellringer. Acid precipitation is precipitation, such as rain, sleet, or snow, that contains a high concentration of acids, often because of the pollution.

Focus on the Headwaters The Shenandoah Watershed Study / The Virginia Trout Stream Sensitivity Study Rick Webb Department of Environmental Sciences University.

General Chemistry Element –composed of atoms Nucleus –protons (+) and neutrons (0) Electrons (-)

Geologic controls on the chemical stream water response to atmospheric pollution (acid and Hg deposition) in Shenandoah National Park Ami Riscassi Drew.

Section 3: Acid Precipitation

WGE September 20111Brit Lisa Skjelkvåle Trends in precipitation chemistry, surface water chemistry and aquatic biota in acidified areas in Europe.

Acid-Base Notes. Acid- Compound that forms hydrogen ions (H + ) when dissolved in water Base – compounds that forms hydroxide ion (OH - ) when dissolved.

North Creek Water Quality Prepared by Jon Rogers and Carie McCoy.

Inorganic Nutrient Research Kellogg Biological Station LTER o Soils in managed agricultural systems and unmanaged fields and forests: o Carbon and nitrogen.

 precipitation (rain, sleet, snow) that contains a high concentration of acids.

25.1 Acids, Bases, and pH Key Question: What is pH? *Read text section 25.1 AFTER Investigation 25.1.

Buffering Capacity: Seawater CO 2 Chemistry Scripps Classroom Connectionhttp://earthref/SCC.

Analysis Questions: 1.What does pH measure? the concentration (not “amount”) of hydrogen (H+) ions in a solution. 2.Which pH has the highest concentration.

Acid mine drainage Mateo Transueo. What causes it……... ► Acid mine drainage (AMD) is the drainage produced from mines containing sulfide minerals which.

Acid Mine Drainage By: Jen Sommers And Jamie Walsh.

Preparation of Buffer Solutions by Different laboratory Ways

Section 3: Acid Precipitation

Review Definition of Acid and Bases Acid – a substance that donates an H + Base – a substance that accepts an H + Link to H+ transfer.

Section 3: Acid Precipitation

Acids and Bases Bundle 4: Water.

Section 3: Acid Precipitation

Section 3: Acid Precipitation

8.3 Properties of Acids and Bases

Acids and Bases Bundle 4: Water.

Acids and Bases Bundle 4: Water.

Section 3: Acid Precipitation

Acid Precipitation.

Acids and Bases Otherwise known as pH!.

Acid Precipitation.

Section 3: Acid Precipitation

LO: I understand how the pH of a salt solution can vary.

UNDERSTANDING ACIDS and ALKALIS

Acids and Bases Bundle 4: Water.

Section 3: Acid Precipitation

Section 3: Acid Precipitation

Dissolved Gases in the Ocean

Objectives Explain the causes of acid precipitation.

Section 3: Acid Precipitation

Essential Question: How does climate change affect our oceans

Section 3: Acid Precipitation

Notes: The pH Scale The pH scale is used to measure the strength of an acid or a base. pH scale runs from 0 to 14.

Section 3: Acid Precipitation

Acids and Bases When water dissociates,

Section 3: Acid Precipitation

Solutions and pH Chapter 2.

Preparation of Buffer Solutions by Different laboratory Ways

Section 3: Acid Precipitation

III. Acid Deposition.

Classroom Catalyst.

Presentation transcript:

Episodic Acidification and Changes in Fish Diversity in Pennsylvania Headwater Streams By Matthew T. Moran

Why? Concern for loss of species diversity in fish.

Objectives Compare the diversity of the fish species in 70 streams in Pennsylvania’s Appalachian Plateaus and Valley and Ridge provinces during with the diversity of fish species in these same streams during Relate any changes in fish diversity to changes in water chemistry and the occurrence of acidic runoff episodes.

Methods 50 streams in the Appalachian Plateaus 20 streams in the Valley and Ridge province 1st, 2nd, or 3rd order streams Predominately forested watershed Uninfluenced by mining or gas wells

Tests Measured colorimetric and laboratory pH Conductivity-test for metals Alkalinity-mainly composed of bicarbonates, carbonates, and hydroxides. Streamflow-flowmeter Total dissolved aluminum-amount of dissolved is strongly influenced by acidity. Electrofished

Results

Conclusion In the past 24 years, a reduction on fish diversity has occurred in a large number of low alkalinity streams in PA. Changes in stream pH and alkalinity during this period and the presence of near toxic to toxic concentrations of aluminum provide strong evidence that loss of diversity is linked to acidification of poorly buffered streams.

The end!