Data Set Citation
Adib-Samii J. 2008. POD! Fish- DFG 20mm Delta Smelt Survey March-July 1995-2006.
KNB Data Registry: urn:lsid:knb.ecoinformatics.org:nceas:899:3 (http://knb.ecoinformatics.org/knb/metacat/nceas.899.3/nceas).
Data Tables, Images, and Other Entities:
Metadata download:Ecological Metadata Language (EML) File
Data Table:20mm 1995-2005 CB Net CPUE Matrix_Core Stations.xls (View Metadata | Download File download)
Data Table:20mm 1995-2006 CPUE Matrix_Core Stations V4.xls (View Metadata | Download File download)
Data Table: (View Metadata )
Data Table: (View Metadata )
Data Table: (View Metadata )
Online Distribution Info:
Download File: http://www.delta.dfg.ca.gov/data/20mm/
Offline Distribution Info:
Medium:digital
Data Set Owner(s):
Organization:NCEAS 12192: Fleishman: Ecosystem analysis of pelagic organism declines in the Upper San Francisco Estuary
Organization:National Center for Ecological Analysis and Synthesis
Individual: Julio Adib-Samii
Organization:California Department of Fish and Game (DFG)
Address:
Select state or territory here.
Email Address:
jadibsamii@dfg.ca.gov
Metadata Provider(s):
Individual: Marissa Bauer
Associated Party:
Individual: Julio Adib-Samii
Role:
associatedParty
Individual: Erin Gleason
Role:
Co-owner
Abstract:
 
Larval/juvenile fish sampling March-July 1995-2006 This study monitors postlarval-juvenile delta smelt distribution and relative abundance throughout their historical spring range in the Sacramento-San Joaquin Delta and San Francisco Estuary. Delta smelt in the Central and South Delta areas may be entrained into the pumps of the State Water Project (SWP) and the Central Valley Project (CVP). This survey gets its name from the size (20-mm) at which delta smelt are retained and readily identifiable at the fish facilities associated with the state and federal pumps. The 2004 Biological Opinion requires this survey to provide %26quot;recent time%26quot; (within 72 hours) information on the distribution and relative abundance of delta smelt throughout the Delta and the upper estuary. These data can be found under Delta Smelt Distribution and Delta Smelt Length Frequency . Based upon the data, recommendations are made to protect delta smelt.
License and Usage Rights:
 
no restrictions
Geographic Coverage:
Geographic Description:Upper San Francisco Estuary
Bounding Coordinates:
West:  122.3833  degrees
East:  122.3833  degrees
North:  38.0833  degrees
South:  38.0833  degrees
Temporal Coverage:
Begin:
1995
End:
2006
Access Control:
Auth System:knb
Order:denyFirst
Access Rules:
ALLOW:
[all]
uid=nceasadmin,o=NCEAS,dc=ecoinformatics,dc=org
ALLOW:
[all]
uid=mbauer,o=NCEAS,dc=ecoinformatics,dc=org
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public
Contact:
Individual: Julio Adib-Samii
Organization:California Department of Fish and Game (DFG)
Address:
Select state or territory here.
Email Address:
jadibsamii@dfg.ca.gov
Methods Info:
Step 1:  
Description:
Field sampling:
The 20-mm net is a conical plankton net 5.1 m in length with a mouth opening of 1.5 m2, and is mounted on a weighted tow frame with skids. The net features a 1,600 %26#206;%26#188;m (1/16 in.) knotless nylon Delta mesh (35 lb. test) or 1,600 %26#206;%26#188;m (1/16 in.) Nitex monofilament. Durable canvas mouth and cod-end sections are attached to the net to prevent premature wear from contact with the substrate. Fish are collected in a removable 2.2 L screened (474 %26#206;%26#188;m stainless steel wire bolting cloth) cod-end jar. Zooplankton are collected with a Clarke-Bumpus (CB) net attached to the top of the 20-mm net frame. The CB net consists of 160 %26#206;%26#188;m knotless nylon mesh and measures 78 cm long with a 12 cm mouth diameter. A General Oceananics flowmeter is mounted in the mouth of the 20-mm and CB nets to estimate the volume (m3) of water sampled. To sample the entire water column efficiently, three 10- minute stepped oblique tows (1.2 m per step) are completed at each station (the CB net is only fished during the first tow). After each tow, the entire sample is transferred to a labeled holding jar containing 10%26#37; formalin neutralized with sodium borate. Rose Bengal dye is added to each jar to aid in separating animals from detritus.