Fieldwork

Posts about fieldwork

Fish in the Bay – January 2020: The Longfin Chronicles, Part 3.

Longfin trawl results from January 2nd & 3rd. Operation “Save Our Smelt” 2020/21, week three.  By this point, over 100...

Fish in the Bay – December 2020: The Longfin Chronicles, Part 2.

Longfin trawl results from December 27th& 28th. Longfin Smelt Broodstock Collection. Operation “Save Our Smelt” 2020/21 continued through the last...

Fish in the Bay – December 2020: The Longfin Chronicles, part 1.

Longfin trawl results from December 20th. Operation “Save Our Smelt” 2020/21 has begun.  This is the third year that researchers have...

Fish in the Bay – December 2020: Anchovy Rebound & Blue Fish.

Trawl map. A Longfin Smelt “Alert” was posted earlier concerning egg-bearing Longfins we caught in December.  This post addresses all...

Fish in the Bay – December 2020: Longfin Alert! Longfin Smelt are Spawning in Lower South San Francisco Bay!

Trawl map highlighting the December Longfin Spawning Zone. 1. Background. In 2017, UC Davis researchers first confirmed Longfin Smelt spawning in...

Fish in the Bay – November 2020: Cold Snap – Winter Arrives.

Trawl map. November trawls confirmed that winter arrived in Lower South Bay:  Total fish counts dropped from over 7,900 in...

Fish in the Bay – October 2020: Anchovy Spawning & Silverside Tsunami Increase.

Trawl map annotated with Anchovies and Silversides. Anchovy spawning locations are circled in pink. Two major trends continued in October: ...

Fish in the Bay – September 2020, Part 2: Shimofuri Special Report and Benthic Bugs.

Fish in the Bay – September 2020, Part 2: Shimofuri Special Report and Benthic Bugs.

This post is a cleanup of a few ongoing issues.  The Shimofuri Goby problem. As discussed many times, Shimofuri Gobies...

Fish in the Bay – September 2020: Silverside Tsunami, spawning Anchovies & some apex predators.

Trawl map annotated with Anchovies and Silversides. Anchovy spawning locations are circled in pink. Anchovies continue to spawn in September! ...

Fish in the Bay – August 2020: Anchovy Spawning Supplemental Report.

Hello folks.  This is the promised Anchovy Spawning Supplement to accompany the regular August Fish in the Bay report.  The...

Fish in the Bay – August 2020: Red Ceramium, Tricolored Blackbirds, & more Spawning Anchovies.

Hello again.  This is a bit of an “odds and ends” clean up post.  I was unable to join the...

Fish in the Bay – July 2020: Lots of Crangon & Topsmelt, plus a Red Ceramium Bloom.

Trawl map.   Bay-side stations trawling results.   Upstream of Railroad Bridge. Our July trawling weekend was quite an experience. ...

Fish in the Bay – July 2020, Anchovy Alert! Anchovies are spawning in Coyote Creek!

This is a Fish in the Bay special Alert:  Anchovy spawning has been confirmed in Lower South San Francisco Bay....

Fish in the Bay – May & June 2020, part 2: Fishes of June, plus a bonus worm.

This is part two of a combined May – June report.  Part one examined the massive Crangon shrimp recruitment explosion...

Fish in the Bay – May & June 2020, part 1: Crangon Shrimp Recruitment Explosion.

Wilson Xieu, junior specialist at the UC Davis Otolith Geochemistry & Fish Ecology Lab, joined the trawls in May.  Photo...

Fish in the Bay – March 2020, part 2: The Shrimp Gradient (post SARS-CoV-2 lock-down edition).

Hello again folks.  This is a belated part 2 to the March fish report.  Coronavirus/COVID-19 crisis forced a hiatus in...

Fish in the Bay – March 2020: Spring Spawns – Part 1

I am social-isolating and self-sheltering to maximum extent possible. Yet another naturally-mutated virus popped up and potentially threatens to mow...

Fish in the Bay – February 2020: Comb Jelly Explosion!

No rain = fewer fish!  An unseasonable winter dry spell continues.  Lower South Bay continues to get saltier.  Based on...

Fish in the Bay – January 2020: Part 2, More Winter Bugs & Fishes.

Full Moon and perihelion.   As mentioned in Part 1, we were experiencing the second or third highest-high tide of the...

Fish in the Bay – January 2020: Part 1, Pregnant Sculpin, Saltwater Oddballs, and a Shad Experiment.

Trawl map. Full Moon and perihelion.   The Moon set at sunrise as we launched on Saturday.  The combination of full...

Fish in the Bay – December 2019: Part 2, Gobies and more wet-season erosion.

Some additional December observations and 2019 end of year clean up. Fish & Bug Matrix: Six good years of comparable...

Fish in the Bay – December 2019: Part 1, Rains bring Mysids and other critters.

December trawls: Jon Kuntz was on lines and net duty.  Happy New Year!  I am catching up on December reporting. ...

Fish in the Bay – December 2019, Special Report: Brown Shad after Bomb Cyclones & Atmospheric Rivers.

Hello again everyone.  If you live in the Bay Area you are aware that we had a lot of rain...

Fish in the Bay – November 2019, UC Davis Trawls – Blue Fish!

Happy Thanksgiving! BE THANKFUL FOR THE RAIN.  Cool-season rains were long overdue when we trawled on 9-10 November.  The fish...

Fish in the Bay – October 2019, UC Davis Trawls (Part2) – Big Fish in a Little Pond; plus a Shrimp update.

This is part 2 from our latest trawling weekend, 5 & 6 October.  See previous post for datasheets. Bay Study. ...

Fish in the Bay – October 2019, UC Davis Trawls – Winter Fish Arrivals & a goby surprise.

I joined the UC Davis trawls on both days of this October’s trawling weekend.  … Fish are on the move! ...

Fish in the Bay – September 2019, UC Davis Trawls – Exopalaemon Blow-Out plus more Anchovy Color Investigation.

I did not join the September trawls, so the photo record is a little sparse.  It was an interesting month...

Fish in the Bay – August 2019, UC Davis Trawls – Worm Fight and the Evolving Marsh.

We had another good trawling weekend in August despite warm water and plummeting Dissolved Oxygen (DO).    Dr. Hobbs joined...

Fish in the Bay – July 2019, UC Davis Trawls – Brown-back Anchovies and Bat Rays

It was another mixed-up weekend in July owing to extreme summer tides and some rough afternoon weather that preempted trawling...

Fish in the Bay – June 2019, UC Davis Trawls – Freshness Continues

Hello folks.  I joined Jim Hobbs and the UC Davis trawling surveys on Saturday, June 1st.  It was a crazy...

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