| Data Set Citation |
NCEAS 12192: Fleishman: Ecosystem analysis of pelagic organism declines in the Upper San Francisco Estuary, National Center for Ecological Analysis and Synthesis, and Adib-Samii J of California Department of Fish and Game (DFG).2008.POD! Fish- DFG Delta Smelt Larval Survey 2005-2006 .
nceas.901.1
(http://knb.ecoinformatics.org/knb/metacat/nceas.901.1/nceas).
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| Offline Distribution Info: |
| Medium: | digital |
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Organization: | NCEAS 12192: Fleishman: Ecosystem analysis of pelagic organism declines in the Upper San Francisco Estuary |
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Organization: | National Center for Ecological Analysis and Synthesis |
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Individual: | Julio Adib-Samii |
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Organization: | California Department of Fish and Game (DFG) |
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Email Address:
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| Metadata Provider(s): |
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Individual: | Marissa Bauer |
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| Associated Party: |
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Individual: | Julio Adib-Samii |
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Role:
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Role:
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| Abstract: |
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| Monitor and provide information on larval delta smelt abundance and distribution in the upper San Francisco Estuary.
Conduct larval fish surveys to determine the timing, distribution, and abundance of delta smelt larvae. Help estimate larval delta smelt fish losses and determine the magnitude of entrainment of larval delta smelt at Central Valley Project (CVP) and State Water Project(SWP)intakes.
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| Geographic Coverage: |
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Geographic Description: | upper San Francisco Estuary |
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Bounding Coordinates:
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| West: | 122.3833
degrees
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| East: | 122.3833
degrees
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| North: | 38.0833
degrees
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| South: | 38.0833
degrees
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| Temporal Coverage: |
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| Access Control: |
| Auth System: | knb |
| Order: | denyFirst |
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ALLOW:
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[all]
| uid=nceasadmin,o=NCEAS,dc=ecoinformatics,dc=org
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[all]
| uid=mbauer,o=NCEAS,dc=ecoinformatics,dc=org
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| Contact: |
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Individual: | Julio Adib-Samii |
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Organization: | California Department of Fish and Game (DFG) |
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Email Address:
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| Methods Info: |
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Description:
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| Field sampling: |
The DSLS nets include two larval nets deployed near the bow of the boat (fore nets) and two larval nets deployed from the stern of the boat (aft nets). The fore nets are conical plankton nets 3.35 m in length with a mouth opening of 0.196 m2 and are secured to a bridle attached to aluminum poles. These nets have a 505 %26#239;%26#129;%26#173;m Nitex monofilament mesh with canvas cod-end sections. The aft nets are made of the same material and mesh as the fore nets but also have a durable canvas mouth as well as cod-end sections are attached to the net to prevent premature wear from contact with the substrate. All nets can be deployed at once. Aft net deployment can vary depending on sharing boat resources with the 20-mm Survey program. Fish are collected in a removable 2.2 L screened (474 %26#239;%26#129;%26#173;m stainless steel wire bolting cloth) cod-end jar. Zooplankton are collected with a Clarke-Bumpus (CB) net attached to the top of the aft net frame. The CB net consists of 160 %26#239;%26#129;%26#173;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 all fish nets and CB net to estimate the volume (m3) of water sampled. 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.
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