UNDERC education and research programs Bay Long Bergner 35 lakes and bogs 7 streams many forest and...

UNDERC education and research programs

Bay

Long

Bergner

• 35 lakes and bogs• 7 streams• many forest and

wetland habitats

GLOBAL BIOMES• AQUATIC BIOMES

– RIVERS– LAKES– WETLANDS– ESTUARIES– SALT MARSHES / MANGROVES– TIDAL ZONES– CORAL REEFS– OCEANS

The Hydrologic Cycle

• Over 71% of the earth’s surface is covered by water:– Oceans contain 97%.– Polar ice caps and glaciers contain 2%.– Freshwater in lakes, streams, and ground

water make up less than 1%.

Hydrologic cycle

Zonation in the Littoral Areaand Shore

Shrub & Trees

Mixed herbaceous

Grass stage

Shallow wateremergents

Deep wateremergents

Floatingplants

Submerged plants

Open waterphytoplankton

Vertical Zonation in Stratified Lakes

Limnetic zone

Profundal zone

Littoralzone

LightCompensation

Level

Horizontal Lake Zones and their Biological Communities

psammon

macrophytes

benthos

During Summer StratificationLakes Develop Distinct Layers

Stratified layers may develop differences in both oxygen and temperature.

Lake Zones in Relation to O2 and CO2

Littoral

Sublittoral

Profundal

O2

CO2

Limnetic

Epilimnion

Metalimnion

Hypolimnion

Bergner Lake is “Oligotrophic”

Late Successional Eutrophic Pond

Aquatic (Hydrarch) Succession

Marsh(Eutrophic)

Bog(Dystrophic)

OligotrophicLake

Mesotrophic to Eutrophic

Lake

Terrestrial

• Lake conditions

• Littoral vegetation OR

Bog conditions (raised peat bog, Sphagnum overstory)

• Terrestrial habitat

Sphagnum

Dystrophic “Bog” Habitats are common at UNDERC

lagg lagg

peat open water

false sediments

Forest Service Bog one of many

Dystrophic Lakes at UNDERC

Crampton Lake

Brown Lake

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River Continuum Concept

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Class projects -designdataanalysis

Location:

Peter Lake

Carl Von Ende Sampling for Chaoborus at Ed’s Bog

“Big Bag” (Mesocosm) Experiment

Mesocosms in Peter Lake

Long Lake divided Control of lake algae by regulating fishes

Current Research at UNDERC(Focus on natural processes in undisturbed environments)

• Biological indicators of water quality and environmental change

• Biological regulation of aquatic productivity• Global environmental change• Aquatic-terrestrial habitat interactions• Naturally acidic aquatic environments• Biting arthropods and their transmitted diseases• Introduced crayfish

Long

NEON is coming!!!

NEON’s Mission

• The NEON mission is to :– discover and understand the fundamental

ecological principles that govern the responses of the biosphere.

– provide the capacity to forecast future states of ecological systems.

NEON Climate Domains

Drivers and Responses

The changing landscape

Class outline

• Mon am - lake lecture• Mon am - field equipment demo• Mon pm - lake sampling• Mon pm - invert / zoop id

• Tues am - bog lecture• Tues am - finish lake samples / limno summary• Tues pm - bog sampling• Tues pm - invert / zoop id / limno summary

Class outline

• Wed am - stream lecture• Wed pm - stream sampling• Wed pm - invert / fish id

• Thurs am - Discussion of class projects

• Thurs-Sat - data collection, analysis and ppt– Sun evening - group presentations– Written reports due (by email July 20)

CLASS PROJECT

4 teams:

Possible topics: 1. Oligotrophic vs eutrophic lakes2. Oligotrophic lakes vs bogs3. Zooplankton behavior w/ & w/out fish4. Diurnal behavior in lakes vs streams

Individual research projectsfish radio-telemetry (2 students)

1. Habitat use by musky/pike2. Importance of streams

General Methods

Radio/Acoustic Telemetry

• Radio/Acoustic Transmitters

• Remote Hydrophones

Capture & Tagging

Crayfish decomposition or tadpole ecosystem impacts