MBSS Site Summary for: BRET-104-B-2007

Site Photos

Field photo showing stream conditions at site BRET-104-B-2007-1 (Opens in a new window) Field photo showing stream conditions at site BRET-104-B-2007-2 (Opens in a new window)

Located on Nelson Run UT1 in the Breton Bay watershed, 8-digit code: 02140104.
This stream was visited in the spring on 3/26/2007 and again in the summer on 6/20/2007.

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 Poor - 2.7 / 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 335 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 11.7 %
Agricultural Land Use 40 %
Forested Land Use 47.6 %


Stream showing woody debris, logs, and rocky substrate.
An example of woody debris in a stream.

Physical Stream Habitat
Instream Habitat 12/20 (Suboptimal)
Epifaunal Substrate 13/20 (Suboptimal)
Velocity/Depth Diversity 11/20 (Suboptimal)
Pool Quality
Pool Extent = 57 meters 		13/20 (Suboptimal)
Riffle Quality
Riffle Extent = 18 meters 		11/20 (Suboptimal)
Shading 95 %
Embeddedness 50 %


Stream Water Quality:
Water temperature 20.9 ° C
Dissolved oxygen (DO) 6.4 mg/L
pH (lab) 6.37
Conductivity 120 µmho/cm
Alkalinity
(acid neutralizing capacity) 		175.4 µeq/L
Dissolved organic carbon (DOC) 4.1627 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. 		Close-up of a mayfly indicator species.

Fish Survey Results:
The following 5 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Eastern Mudminnow 123
American Eel 14
Tessellated Darter 13
Bluegill 1
Pirate Perch 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Eastern Cricket Frog
Marbled Salamander
Northern Green Frog
Northern Red Salamander
Northern Two-Lined Salamander
Spotted Salamander

Crayfish:
Orconectes limosus

Exotic Plants:
Japanese Honeysuckle
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Orthocladius Non-Biting Midges 50
Prosimulium Black Fly 30
Stenelmis Beetle 11
Limnephilidae Northern Casemaker Caddisfly 4
Simulium Black Fly 4
Hydrobaenus Midge 4
Ironoquia Northern Caddisfly 3
Thienemanniella Non-Biting Midges 1
Cheumatopsyche Net-Spinning Caddisfly 1
Diplectrona Net-Spinning Caddisfly 1
Menetus Air Breathing Freshwater Snail 1
Spirosperma Aquatic Oligochaete Worm 1
Cura Flatworm 1
Nigronia Megaloptera (Dark Fishfly) 1
Kick net sampling for macroinvertebrates.
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.