MBSS Site Summary for: GILB-102-R-2009
Located on Gilbert Creek in the Gilbert Swamp watershed,
8-digit code: 02140107.
This stream was visited in the spring on 3/12/2009 and again in the summer on 6/16/2009.
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
|
Fair - 3.0 / 5.0
|
|
Benthic IBI
|
Good - 5.0 / 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
|
497 acres
|
An example of a forested stream.
|
|
Urban Land Use
|
19.4 %
|
|
Agricultural Land Use
|
36 %
|
|
Forested Land Use
|
43.9 %
|
Stream Water Quality:
|
| Water temperature |
20.5 ° C
|
| Dissolved oxygen (DO) |
7.7 mg/L
|
| pH (lab) |
6.55 |
| Conductivity |
110 µmho/cm
|
Alkalinity
(acid neutralizing capacity)
|
199 µeq/L |
| Dissolved organic carbon (DOC) |
5.3215 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.
|
 |
| Green Treefrog |
| Northern Green Frog |
| Pickerel Frog |
| Japanese Honeysuckle |
| Japanese Stiltgrass |
|
|
|
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
|
| Genus/Family |
Common Name |
Count |
| Acerpenna |
Tiny Blue-Winged Olive Mayflies
|
40 |
| Maccaffertium |
March Brown And Cahill Mayfly
|
11 |
| Orthocladius |
Non-Biting Midges
|
5 |
| Tanytarsus |
Non-Biting Midges
|
4 |
| Thienemannimyia Group |
Non-Biting Midges
|
4 |
| Stilocladius |
Midge
|
4 |
| Simulium |
Black Fly
|
4 |
| Stegopterna |
Black Fly
|
3 |
| Trissopelopia |
Non-Biting Midges
|
3 |
| Thienemanniella |
Non-Biting Midges
|
3 |
| Polypedilum |
Non-Biting Midges
|
3 |
| Paratanytarsus |
Non-Biting Midges
|
2 |
| Cheumatopsyche |
Net-Spinning Caddisfly
|
2 |
| Limnephilidae |
Northern Casemaker Caddisfly
|
2 |
| Leptophlebiidae |
Pronggilled Mayfly
|
2 |
| Oulimnius |
Riffle Beetle
|
2 |
| Neophylax |
Caddisfly
|
2 |
| Orthocladiinae |
Midge
|
2 |
| Chrysops |
Deerfly
|
2 |
| Ptilostomis |
Giant Casemaker Caddisfly
|
2 |
| Clioperla |
Green-Winged Stonefly
|
2 |
| Caecidotea |
Isopod
|
1 |
| Isotomurus |
Elongate-Bodied Springtail
|
1 |
| Heptageniidae |
Flathead Mayfly
|
1 |
| Nemouridae |
Nemourid Stonefly
|
1 |
| Lype |
Net Tube Caddisfly
|
1 |
| Pseudolimnophila |
Crane Fly
|
1 |
| Physa |
Air-Breathing Freshwater Snail
|
1 |
| Crangonyx |
Amphipod
|
1 |
| Synurella |
Amphipod
|
1 |
| Prosimulium |
Black Fly
|
1 |
| Centroptilum |
Small Minnow Mayfly
|
1 |
| Isoperla |
Stripetail Stonefly
|
1 |
| Tvetenia |
Non-Biting Midges
|
1 |
| Zavrelimyia |
Non-Biting Midges
|
1 |
| Labrundinia |
Non-Biting Midges
|
1 |
| Microtendipes |
Non-Biting Midges
|
1 |
| Parametriocnemus |
Non-Biting Midges
|
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)
