Biological Science Technician Internship Crater Lake Oregon (2022)

Fisheries Position Description:

Assists in conducting biological aquatic surveys to obtain information for management of fish, amphibians, macroinvertibrates, and aquatic systems and for the determuination, establishment and application of biological facts, principles, and methods, techniques and procedures for protecting, restoring and managing aquatic recourses.

Conducts recourse monitoring programs for evaluationg rare, threatened and endangered quatic speceis, population dynamics, ecosystem relationships, exotic aquatic species adn public helath/safety issues.

Assists in measurements of physical attributes of ;lakes and streams including water chemistry and temperature.

Conducts surveillance ot help detect invasion and colonization by non-natve fish species, adn the control of those species.

May operayte a variety of field equipment com monly used in fish studies, including small wtaercraft (up to 28 feet in length) , fish sampling gear including trawls, nets and electrofisihing equipment.

Day-To-Day what I have done LOG

OSU radiation safety trained - Substance handled: Carbon 14 (Beta Emitter)

06/27/2022

• Assisted in boat mechanics of Neuston research vessel engines

  • Diagnosis: Impoared Impeller part. Pump system flushed with freshwater and part replaced

• Assisted in boat mechanics of Oozle research vessel engine

  • Diagnosis: electrical issue with in cylinders, one cylinder non responsive, mechanic contacted

06/30/2022

• Scuba Supervisor: Careful watch of 15 minute in length dive to check on the offshore mourning lines. Dive conducted byJosh and Scott Girdner

07/05/2022

• Seabird CTD Scan

  • Up to approximately 582 meters

  • Measured

    • Temperature (°C) up to 20.00

    • Chlorophyll concentration (μg/1) up to 5.00

    • Transmissometer, primary up to 100

Above: SearBird software monitoring the declining depth of the CTD

• Temperature Probe

  • Retrieval, data download, reprogramming on R, battery replacement, redeployment. \

• Above image: SeaBird (?) program to monitor to depth of capture temperature sensors

• Controled Gypsy Head (A gypsy is a notched-ring that is meshed with links present on the chain used to hoist an anchor) used to redeploy temperature sensors ($1000/peice *19)

07/06/2022

• Old man of the lake spotted!

07/07/2022

• Gill Net Fish catch

  • Prepared, deployed and retrieved gill nets along 2 collection locations: Chaski (single sinking net) and Eagle point (single floating) on Crater Lake

  • Information captured: Speciesm Fork lgentth, total length, weight (g), Sex and maturity. All rainbow trout stomachs checked for Crayfish- though no Crayfish were found in their stomachs form either collection sight.

  • Captured majorly immature (IM) Kokanee salmon males in Chaski

  • Capture majorly Rainbow Trout Females Mature for upcoming session (MUS)

  • Interesting finisings: Crayfish expanded their habitat to Chaski which is beyond previously known distribution for their speices.

07/11/2022

• Closed net Zooplankton sample collection

  • Lower closed net sistem into 8 various depths

  • Collect specimens into clear plastic jars

  • Put 2:1 water to Isopropyl alcohol (ethanol) solution

• Biology Teacher boat tour on Climate Change

07/12/2022

• Placing zooplankton with Carbon-14 and liquid base into 0m - 180m glass bottles, half clear, half blacked out with electrical tape.

• Assembled the Net Primary Productivity samples of Zooplankton with Carbon 14 ‘cocktails’ which were descended into 8 depths up to 180 meters. This time around, there was not enough C-14 available to extend beyond 40 meters.

• A filter apparatus was used to reduce the sample down to filament paper, which was evaporated of liquid over isopropyl solution for 1 min. The paper was transferred to a glass scintillation vial with a base solution to hold the radioactive material in place. Samples were shipped off to OSU for obervation.

07/14/2022

• Deployed a CTD for Fluorometr which measures 8 spectra of light, chlorophyll b, chlorophyll a, UV-B and UV-A spectrum, as well as one or two PAR spectrums.

• Tool name: ECO Fluorometers and Scattering Sensors created by Sea-Bird

Above image: Area 13 is the primary location for deploying CTD and DO technology. Also nearby the weather tower I believe.