SA017
Aquatic insect sampling in Lookout Creek at the H.J. Andrews Experimental Forest, 2001

CREATOR(S): Sherri L. Johnson, Alex M. Farrand

PRINCIPAL INVESTIGATOR(S): Sherri L. Johnson

ORIGINATOR(S): Alex M. Farrand

DATA SET CONTACT PERSON: Sherri L. Johnson

METADATA CONTACT: Alex M. Farrand

METADATA CREATION DATE:

22 Aug 2006

MOST RECENT METADATA REVIEW DATE:

4 Mar 2013

KEYWORDS:

Populations, communities, populations, species lists, streams, aquatic invertebrates, arthropods

PURPOSE:

The purpose for creating this database was to provide other researchers the opportunity to obtain the raw data for comparison with other datasets, to learn which taxa are present at our study site, and the phenology of emergence of these aquatic insect taxa.

METHODS:

Experimental Design - SA017:

Description: 10 emergence and ten pan traps placed randomly within a 100 meter section of stream and samples were collected continuously every 72 hours. Once a week we collected two 12-hour day and night samples. We recorded the number of insects within certain taxa groups to determine how many emerged and how many returned from our pan traps. The ratio of return to emergence provided a proportion of return.

Field Methods - SA017 :

Description: Used both emergence and pan traps to collect emerging and returning aquatic insects. Sieved specimens collected from traps into bags with 75% ethanol for preservation. Disturbed traps where traps were knocked over were excluded from the count.

Laboratory Methods - SA017 :

Description: Samples were identified using compound microscope

SITE DESCRIPTION:

Lookout Creek at our site is a 4th order stream. Site was located in an old-growth, unconstrained reach approximately half way between the upper bridge and the confluence of Mack Creek. Stream slope was approximately 1% with cobble and boulder substrate. Riparian forest was mixed conifer and deciduous.

TAXONOMIC SYSTEM:

None

GEOGRAPHIC EXTENT:

Lookout Creek at the H.J. Andrews Experimental Forest

ELEVATION_MINIMUM (meters):

600

ELEVATION_MAXIMUM (meters):

700

MEASUREMENT FREQUENCY:

every 3 days plus two 12-hour sampling/week

PROGRESS DESCRIPTION:

Complete

UPDATE FREQUENCY DESCRIPTION:

notPlanned

CURRENTNESS REFERENCE:

Observed