Leaf Decomposition in Streams

Slides:

Advertisements

Similar presentations

Hydrological Cycle.

Advertisements

Food webs in streams: Energy and matter flow Lecture Outcomes F Name and describe a variety of stream organisms, their adaptations to feeding and their.

Ecosystem Processes and the River Continuum Concept Unit 1: Module 4, Lecture 5.

Macroinvertebrate Counts; Now and Then Comparing and contrasting 2000’s macroinvertebrate count, to 2008’s macroinvertebrate count.

Aquatic Organisms by LeAnne Yenny

Benthic Macroinvertebrates

Macro Invertebrates Wednesday – November 13, 2009.

“ How Sensitive Are You ?” Lab Review. List 1 ecological benefit provided by aquatic macroinvertebrates. Decomposers (eat detritus) Form base of.

Benthic Macroinvertebrates

Benthic Macroinvertebrates. Requirements- 2 page word document Pictures of macroinvertebrates description Where they can be found What they eat and what.

Biomonitoring the study of biological organisms and their responses to environmental conditions; can be fish, algae or insect communities.

Decomposition. © 2012 Pearson Education, Inc. Respiration Grazer system Decomposer system Net primary productivity Dead organic matter (a) Forest.

Lakes (& Ponds)  Lake (& Pond) – body of water in one basin with realtively little flow.  Limnology = study of lake ecology.  Lentic system = more “still”

Intensive aquaculture can produce yields that are orders of magnitude beyond natural ecosystems How to maximize energy flow to fish Increased nutrient.

Leaf Pack Experiments Aquatic Ecology. Background Historically, most small streams in the eastern United States were forested. Leaf fall from the forest.

Pond Study Hypothesis Questions Is the pond in Media a healthy ecosystem? How do you know?

Trophic relationships Feeding roles in streams. Aquatic insects categorized: Food type and how food is obtained Feeding guilds = functional groups.

Macroinvertebrates and Bioassessment: Using Biological Indicators to Measure Stream Health Caitlin Chaffee URI Cooperative Extension.

By: Lindsey Keiser. Introduction What I will Discuss: Geography Structure Physical Condition Biology Human Influence.

Stream Communities and River Continuum Concept Stream Energy Inputs and Foodwebs Biofilms and Periphyton Organic Matter Transformations Macroinvertebrate.

Compiled by: Angie Moline, Colorado State University GK-12 Program Introduction to Stream Ecology.

Lakes have zonation structured by physical forces such as light, wind and waves. different zones in the lake had different types of plants and animals.

Ecology Lecture 5 Ralph Kirby.

Stream Ecology and Macroinvertebrate Biology Background Information for Developing your Research Project.

STREAM ECOSYSTEMS.

FRESH WATER. The Great Lakes Thanks to Michael W. Rowan, Ph.D. for most of this presentation… Part One.

Little Creatures that tell us If our natural waterways are healthy

Terrestrial leaf litter is an important nutrient source in streams.

STREAM MACROINVERTEBRATES. Biotic Indicators Why are they Important? Easy to find and collect Easy to find and collect Live in water most of their life.

Shredders and Gougers Consume CPOM (> 1 mm mesh) - leaves, etc., and thus depend heavily on seasonal inputs of leaves to the stream Mouthparts usually.

Benthic macroinvertebrates They are ___________  even in the most _________ or  environmentally extreme lotic environments contain some ________________.

Sampling Biodiversity Using macroinvertebrates

Decomposers and Decomposition

Stream Animals & the Heterotrophic Food Chain Processing of Organic Matter In fall, leaf debris from overhanging deciduous trees accumulates in the stream.

Aquatic Critters By: Brittany Martin. Benthic Macroinvertebrates  They are organisms without backbones and they live in the bottom substrates of the.

Water Assessment Data Lab Assignment # 5 Land Use The first thing you notice when field sampling is the area around your site. What type of land use.

Functional Feeding Groups in stream macroinvertebrates.

Dragonflies & Mosquitoes: Their role in the ecosystem.

Benthic Macroinvertebrates of the Rouge River Watershed An Introductory Photo Slide Show.

Leaf Decomposition in Aquatic Ecosystems

Macroinvertebrates Little Creatures that tell us If our natural waterways are healthy.

Environmental Science 4.2. Water Quality? Macroinvertebrate surveys are an important part of monitoring water quality Benthic macroinvertebrates – aquatic.

Trophic Relations Lotic Food Web Algal-based (previous examples)

What do macroinvertebrates eat?

STREAM ECOLOGY.

Phylum Arthropoda Class Insecta Order Trichoptera

Stream Ecology.

Ecosystem Processes and the River Continuum Concept

Creatures that Live in the Water

Read the article on Leaves “Energize” our Streams and answer questions.

Includes large logs more than 6 inches wide

Functional Feeding Groups in Stream Macroinvertebrates

Functional Feeding Groups

Sci 113: Watersheds And How They Work

Allochthonous Input.

Read the article on Leaves “Energize” our Streams and answer questions.

Functional Feeding Group: Shredders

Functional Feeding Group: Shredders

“How Sensitive Are You?”

Macroinvertebrates are animals without a backbone that can be seen with the naked eye. These bottom-dwelling animals include crustaceans and worms but.

“How Sensitive Are You?”

Trends in Invertebrate Feeding Strategies

Bowen Elementary Kentwood, MI 5th Grade

Benthic Macroinvertebrate and Pollution Tolerance

Macroinvertebrates Identification

Warm up 9/20-0/21 What is the only natural lake in Texas?

Rockin Racettes 5th grade

Benthic Macroinvertebrates

Aquatic Macroinvertebrates

By Juliet Dodd-o, Parker Edmunds, and Maggie Shutzler

Presentation transcript:

Leaf Decomposition in Streams

Terrestrial leaf litter is an important nutrient source in streams

Leaf Decomposition 1) Leaves become waterlogged and sink. May lose up to 42% mass to leaching. 2) Colonization by bacteria and fungi begins almost immediately.

Leaf Decomposition 3) Colonized by shredders (eat CPOM). Shredders convert CPOM to FPOM. Grazers eat algae and diatoms (FPOM). Crane fly Crayfish Amphipod Snail Water penny Diatoms

Leaf Decomposition 4) Collector-gatherers (eat FPOM). Mayfly 5) Collector-filterers (eat FPOM). Bacteria and fungi continue to break down CPOM and FPOM. Mayfly Midge Black fly Caddisfly

Predators eat other invertebrates Hellgrammite Dragonfly Damselfly

Purpose of this lab Question 1: Does presence of macroinvertebrates accelerate leaf decomposition?

Purpose of this lab Question 2: Do leaves containing more carbon degrade more slowly? Cellulose and lignin are resistant to decomposition.

Methods Prepare coarse-mesh maple, coarse-mesh oak, fine-mesh maple, and fine-mesh oak bags. Place and secure bags in stream/pond. Remove bags after ~1 month. Rinse macroinvertebrates from leaves and allow leaves to dry. Weigh and estimate leaf material lost. Count macroinvertebrates and sort according to functional feeding groups.

(Collector-filterer) Black fly (Collector-filterer)