MBSS Site Summary for: SASS-104-R-2001
Located on WOODLAND CR UT1 in the Sassafras River watershed,
8-digit code: 02130610.
This stream was visited in the spring on 3/26/2001 and again in the summer on 7/2/2001.
Index of Biotic Integrity (IBI) Results:
An Index of Biotic Integrity (IBI) is a scientific tool used to identify and classify stream health. An IBI associates anthropogenic influences on a stream or with biological condition in the stream, and is formulated using data developed from biosurveys.
Details on the development and application of MBSS IBIs are in this document.
|
|
Fish IBI
|
Good - 4.3 / 5.0
|
|
Benthic IBI
|
Poor - 2.7 / 5.0
|
Land Use
Land use can provide important information for determining stream health.
(Hint: Screen readers will announce definitions; mouse users can hover over dotted text.)
|
|
Catchment area
|
1,931 acres
|
Cows survey the sampling procedure at this extreme example of a highly agriculturalized site.
|
|
Urban Land Use
|
1 %
|
|
Agricultural Land Use
|
88 %
|
|
Forested Land Use
|
10 %
|
An example of woody debris in a stream.
|
Physical Stream Habitat
|
|
Instream Habitat
|
16/20 (Optimal)
|
|
Epifaunal Substrate
|
13/20 (Suboptimal)
|
|
Velocity/Depth Diversity
|
15/20 (Suboptimal)
|
Pool Quality
Pool Extent = 70 meters
|
16/20 (Optimal)
|
Riffle Quality
Riffle Extent = 20 meters
|
16/20 (Optimal)
|
|
Shading
|
25 % |
|
Embeddedness
|
100 % |
|
The embeddedness, a measure of silt on the stream bottom, was 100%. This is
very high, and may adversely affect biotic communities.
|
|
Several measures of instream habitat were considered 'Optimal' at this location.
|
Stream Water Quality:
|
| Water temperature |
19.1 ° C
|
| Dissolved oxygen (DO) |
8.6 mg/L
|
| pH (lab) |
7.12 |
| Conductivity |
220 µmho/cm
|
Alkalinity
(acid neutralizing capacity)
|
583.7 µeq/L |
| Dissolved organic carbon (DOC) |
4 mg/L |
Biological Stream Condition:
Surveys of the organisms living within a stream can give indications of stream health. Species richness, or the number of different species present, as well as indicator species (species whose presence, absence or abundance can serve as a measure of environmental conditions) are informative for stream health.
|
 |
| American Bullfrog |
| Northern Green Frog |
| Northern Spring Peeper |
| Northern Two-Lined Salamander |
| Northern Watersnake |
| Japanese Honeysuckle |
| Mile-A-Minute |
| Multiflora Rose |
|
|
|
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
|
| Genus/Family |
Common Name |
Count |
| Polypedilum |
Non-Biting Midges
|
19 |
| Paratanytarsus |
Non-Biting Midges
|
17 |
| Dicrotendipes |
Non-Biting Midges
|
12 |
| Orthocladiinae |
Midge
|
12 |
| Phaenopsectra |
Non-Biting Midges
|
9 |
| Girardia |
Freshwater Flatworm
|
7 |
| Coenagrionidae |
Narrowwinged Damselfly
|
6 |
| Amnicola |
Freshwater Snail
|
4 |
| Sphaerium |
Fingernail Clam
|
4 |
| Cricotopus/Orthocladius |
Midge
|
3 |
| Chironominae |
Non-Biting Midge
|
3 |
| Naididae |
Aquatic Worm
|
3 |
| Tanypodinae |
Non-Biting Midges
|
3 |
| Thienemannimyia group |
Non-Biting Midges
|
3 |
| Rheosmittia |
Non-Biting Midges
|
2 |
| Chaetocladius |
Non-Biting Midges
|
2 |
| Ablabesmyia |
Non-Biting Midge
|
2 |
| Cryptochironomus |
Non-Biting Midges
|
2 |
| Physa |
Air-Breathing Freshwater Snail
|
2 |
| Enchytraeidae |
Aquatic Worm
|
2 |
| Alboglossiphonia |
|
1 |
| Menetus |
Air Breathing Freshwater Snail
|
1 |
| Probezzia |
Biting Midges
|
1 |
| Cnephia |
Black Fly
|
1 |
| Simulium |
Black Fly
|
1 |
| Ormosia |
Cranefly
|
1 |
| Limnophyes |
Non-Biting Midge
|
1 |
| Cheumatopsyche |
Net-Spinning Caddisfly
|
1 |
| Gordiidae |
Horsehair Worm
|
1 |
| Cricotopus |
Non-Biting Midges
|
1 |
| Libellulidae |
Skimmer Dragonfly
|
1 |
| Ancyronyx |
Spider Riffle Beetle
|
1 |
| Limnodrilus |
Worm
|
1 |
Sampling with a kick net.
|
|
Information disclaimer: The information and data on this page is for guidance and general planning purposes only. It should not be used to make decisions on specific matters.
(Opens in a new window)
(Opens in a new window)
