Term
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Definition
1-12 take the higher number
look at picture
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Term
| Functional Feeding Groups |
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Definition
Functional Feeding Groups groups of inverts classified by how they feed.
Useful in conjunction with RCC.
4 basic categories: shredders, collectors, scrapers, predators
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Term
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Definition
-Aloochthonous organic matter
- All are cheered or miners of living plant material or decomposing leaf or wood debris (CPOM)
-Stream orders 1-3: collectors (gathering and filtering)
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Term
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Definition
-Autochonous organic matter
- Stream orders 4-6: collectors (gathering and filtering)
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Term
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Definition
-FPOM
- Filter or suspension defers that feed on living algae and detritus and deposit feeders feeding on sedimentary
-Stream orders >6 |
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Term
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Definition
-FPOM
- specializations: Setae, Mouthbrushes, Nets, Cephalic fans
- Stream orders >6 |
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Term
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Definition
| - When you can trace the pollutant back to its source |
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Term
| Non-Point Source Pollution |
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Definition
- When there are multiple things that can lead to the pollution and cannot trace where it is from (runoff, fertilizer)
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Term
| Be familiar with and how we classify lentic ecosystems |
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Definition
-Lentic ecosystems have standing or relatively still water.
-Classifications: Based on ability to support life.
-Eutrophic- "true nutrition". Shallow and murky.
-Mesotrophic- "middle nutrition". Combination of both.
-Oligotrophic- "few nutrition". Deep and clear.
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Term
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Definition
| Occurs when there is excess phosphorous and nitrogen. Comes from fossil fuels, agriculture, urban sources, and industry. |
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Term
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Definition
| (lake aging): Process where a lake gets nutrients (P and N) and sediments from surrounding watersheds, becomes more fertile and shallow. |
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Term
· Be able to explain or draw how these following characteristics change with stream order/longitudinal flow
o Q
o Channel width
o Channel depth
o Sediment storage
o Sediment size
o Slope (steepness of river) |
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Definition
Increases downstream:
Q
Channel width
Channel depth
Sediment storage
Decreases downstream:
Slope
Sediment size |
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Term
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Definition
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Term
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Definition
| Coarse particulate organic matter (leaves and twigs). |
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Term
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Definition
| Fine particulate organic matter. |
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Term
| Allochthonous Organic Matter |
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Definition
Tree cover is the sources and also blocks sunlight.
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Term
| Autocthonous Organic Matter |
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Definition
| Less tree cover allows sunlight penetration. |
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Term
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Definition
| Regulates pollutants discharges into US waters (point source), made it unlawful to discharge pollutants from a point source into navigable waters. |
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Term
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Definition
A scale for showing the quality of an environment by indicating the types of organisms present in it. It is often used to assess the quality of water in rivers. 1-10, 1 being excellent 10 being poor.
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Term
step by step process of eutrophication leading to a hypoxia |
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Definition
1. nutrients enter the watershed in elevated concentrations
2. nutrients promote phytoplankton growth and increase their density in the water.
3. more phytoplankton die and settle at the bottom where they are metabolized by bacteria
4. hypoxic conditions arise in the deep water above the sediments
5. aquatic life in and near the sediment flees or suffocates
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Term
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Definition
River Continuum Concept
•Conceptual model that relates physical and biological changes along the longitudinal profile of a river
–Energy
•Autochthonous
•Allochthonous
–Macroinvertebrates
see picture |
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Term
How does the difference in organic matter (allochthonous vs autochthonous) differ through stream order according to the RCC? |
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Definition
Allochthonous vs autochthonous organic matter
1. stream orders 1-3: allochthonous OM tree cover is the source and also blocks sunlight
2. stream order 4-6: autochthonous organic matter (OM) less tree cover allows for sunlight penetration and this shit grows different sources of energy for organisms in this area of the river
3. >6: mostly allocthonous organic matter sediment and depth of the river limit benthic algae but there exist phytoplankton in these reaches as well |
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Term
What are macroinvertebrates? Why are they important / useful as indicator species |
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Definition
-Macro: visible without the aid of a microscope.
-Invertebrate: lack of vertebrae (backbone).
-Importance: they are the link between organic matter resources of a stream and other organisms (FFGs).
so they take the organic matter and turn it into food for other organisms also food for spiders fish and birds
these things might be useful to tell us the health of the water how to tell the biological integrity of the water |
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Term
| Macro-invertebrates as indicator species |
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Definition
•They are affected by physical, chemical, and biological conditions of a stream
•They are critical components of a stream’s food web
•The community reflects cumulative impacts of pollution
•They are easy to sample and identify
•They are sensitive to varying degrees of pollution |
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Term
| stream order 1-3 will be more |
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Definition
Shredders
Collectors (gathering and filtering) |
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Term
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Definition
Scrapers
Collectors (gathering and filtering) |
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Term
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Definition
| Collectors (gathering and filtering) |
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Term
| Know about lotic watersheds |
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Definition
flowing water
begins at a high elevation point and flows to lower elevation point
drain to the ocean or some inland body of water
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