Archive for the ‘Uncategorized’ Category

Drew Gashler Internship at stake! Please consider donating

February 21, 2014

by Ben Yair Raanan, Physical Oceanography Lab

For nearly a decade the Friends of Moss Landing Marine Laboratories (MLML) and the Monterey Bay Aquarium Research Institute (MBARI) have generously awarded a $5,000 summer internship at MBARI to an MLML student in the name of Drew Gashler, a former MLML student and MBARI employee. Unfortunately, due to lack of funds, it may be impossible to offer this incredible opportunity to one of our students this year.

MLML physical oceanography student Diane Wyse placing the nose cone on the Tethys AUV. Photo by: Todd Walsh/MBARI 2012

MLML physical oceanography student Diane Wyse placing the nose cone on the Tethys AUV. Photo by: Todd Walsh/MBARI 2012

(more…)

Journey to the Center of the Slough

February 14, 2014

by Catarina Pien, PSRC Lab

If you’ve ever visited our lab, you’ve seen the beautiful waters surrounding us, often bobbing with a variety of marine mammals. The main body of water that surrounds Moss Landing Marine Laboratories is Elkhorn Slough, which is an estuarine embayment that drains into the Monterey Bay.

Beautiful Elkhorn Slough, photo by Jennifer Chiu

Beautiful Elkhorn Slough, photo by Jennifer Chiu

Elkhorn Slough has evolved greatly in the past few centuries. Since the dredging of Moss Landing Harbor in 1946, the slough has become directly connected and thus heavily influenced by the Monterey Bay. This connection has led the slough to change from a freshwater-influenced estuary to a predominantly saltwater-influenced and erosional body of water. A great deal of research has been done to study how these changes have influenced habitat structure and biological communities in the slough.

My own thesis research will focus on Elkhorn Slough, and how various oceanographic variables have changed and are influencing elasmobranch (shark and ray) populations in the slough. I am hoping that the class will be beneficial in showing me how to measure chemical variables, and analyze values in terms of how they influence biological communities.

Map of Elkhorn Slough, from Google Earth

Map of Elkhorn Slough, from Google Earth

Last week, our chemical oceanography class was split into five groups and deployed to various water bodies around our school to take some measurements and water samples. It had just rained earlier that week, so we were hoping there would be some visible differences in salinity and nutrient content in the regions we were sampling. Although the main channel of Elkhorn Slough is heavily influenced by the Monterey Bay, and thus oceanographically similar to the ocean, the upper reaches of the slough are often less saline (depending on the season), and more influenced by precipitation. One group went offshore to Monterey Bay, two groups went into Elkhorn Slough, one drove around to Salinas River, Carneros Creek, and other connected sloughs, and my group sampled in Moss Landing Harbor.

IMG_3811

We took one of our school’s whalers on a beautiful sunny morning, excited (though some of our facial expressions may not be representative) and ready to sample.

Our team!

We motored slowly through the harbor, observing sea lions sunning themselves, and being observed by harbor seals and a portly sea otter.

IMG_3778

Sea lions sunning themselves

IMG_3798

Curious harbor seals

Large male otter

Large male otter

Once at a station, we used the CTD (Conductivity Temperature Depth) to measure salinity, temperature, and pH at eight stations within our region.

CTD measures salinity, temperature, pH among other oceanographic variables

CTD measures salinity, temperature, pH among other oceanographic variables

We also recorded GPS coordinates, and collected water samples with a syringe, and filtered them into a bottle to bring back to the lab.

Marisa is inserting CTD to measure salinity, temperature, pH

Marisa is inserting CTD to measure salinity, pH and temperature

Emily recording CTD measurements

Emily recording CTD measurements

Marisa filtering seawater

Marisa filtering seawater 

Many of the changes to Elkhorn Slough have been anthropogenic, including the construction of levees, dikes, tide gates, salt ponds, and railroads. Some of these were constructed early on for agriculture and ranching, whereas others have been created to remedy erosional problems we have created.  These barriers have altered tidal flow within Elkhorn Slough, and created distinct oceanographic areas. In order to determine differences between these areas, some stations required us to leave the boat to sample adjacent areas that were separated by a barrier.

IMG_3865

Evan braving the train tracks, photo by Jennifer Chiu

We passed by the lab, hoped we wouldn’t embarrass ourselves in front of the whole lab, and successfully finished our collections near the tide gate leading to the Old Salinas River.

MLML!

MLML!

Combined with the rest of the teams, we now have oceanographic measurements and water samples all around Elkhorn Slough and the surrounding bodies of water. Over the course of the semester, we will learn how to measure phosphate, nitrite/ nitrate, oxygen, silicate, and alkalinity of the water samples. The measurements will tell us something about how how the stations differ from each other, how Elkhorn Slough is partitioned, and the outside influences to each station.

As marine scientists, many of us spend a substantial chunk of time in the field. While field work can be frustrating and tiring, on a beautiful day like this, encountering a multitude of wildlife and puttering slowly through the beautiful waters, it is easy to remember why we went into the field of marine science.

Beach Wrack: What is it and why is it here?

January 20, 2014

By Jarred Klosinski, Phycology Lab

If you’re like me and take long walks on the beach, you may have noticed more mounds of algae along the shore. These mounds are called beach wrack and can contain kelps as well as seagrasses. Other types of seaweeds including red and green algae are also found, but not as often.

beachw1

Kelp wrack composed of the giant kelp (Macrocystis pyrifera) and the feather boa kelp (Egregia menziesii) at an incoming tide near Monterey. Photo credit: Jarred Klosinski

(more…)

Ballast water and epifluorescence microscopy

January 13, 2014

by Liz Lam, Biological Oceanography Lab

The Golden Bear Facility, home to MLML's ballast treatment testing team

The Golden Bear Facility, home to MLML’s ballast treatment testing team

Ballast water treatment and testing is a big focus here in the Biological Oceanography lab, and this is no exception even when it comes to class projects.  Last semester, I started a project aiming to improve one of our counting techniques.  I’d previously written about IMO’s restriction to 10 organisms per 1,000 liters of discharged ballast water and counting zooplankton under a microscope in order to check for these results.  But when it comes to even smaller organisms, such as algae and other even tinier phytoplankton, different methods are called for.

We already have a pretty clever way of quantifying such microscopic organisms by using a few chemical and optical tricks.  The first key ingredient is fluorescein diacetate, or FDA.  One of the special features of this molecule is that it can only be cleaved by certain proteins in live cells.  Once FDA is split, what remains is fluorescein, a compound that glows bright green when excited under blue light. We can then use an epifluorescence microscope to both shine the right wavelength of light and magnify a sample in order to count any green organisms.  If it glows green, then it means it’s alive!  This allows us to quantify the number of live organisms that are extremely small and difficult to see.

(more…)

Fukushima – is the ocean safe?

January 10, 2014

Jackie Lindsey By Jackie Lindsey, Vertebrate Ecology Lab

If you are a marine scientist, you may have had the same experience that I did over the recent holiday break – all of my relatives want to know if I think our seafood is safe from Fukushima radiation.  If you aren’t a marine scientist, you and I may still have something in common – this topic is not my current focus of study and I will (probably) never be one of the “experts” on this matter.  However,  I have started to do some extra research.  I may not be an expert on food safety inspections or the dispersal of different types of radiation, but I do have some ideas about where to look when I don’t know all of the answers.  This is what I told my relatives:

Hitchhiker's Guide to the Galaxy

(Hitchhiker’s Guide to the Galaxy)

(more…)

“Tails” from The Field

August 7, 2013

Angieby Angela Szesciorka, Vertebrate Ecology Lab

Since May, the mammal lab has been as quiet as a post-apocalyptic library (yep, that quiet).

For the marine mammologist (and birder), summer time is all about fieldwork — followed by lots and lots of data crunching and thesis writing. So with fall drawing ever closer (noooooo!), I wanted to check in with my labmates to see what they have been up to.

Below is a quick summary from each of us. We’ll see you soon!

Ryan Carle: Ryan continued working on Año Nuevo Island, finishing data collection for his thesis on Rhinoceros Auklet diet and reproduction. He spends most of his waking hours on the Island identifying prey, restoring habitat, counting burrows, collecting boluses — you name it. When he’s not on Año, he’s trekking about California and making apple cider!

Casey Clark: Casey has been fervently writing up his thesis as he prepares to defend in the fall. Draft one? Check! Falling asleep on your keyboard? Check! He has also been helping out with seabird research in Astoria, Oregon. He did save time for fun too — camping, hiking, and kayaking. Jealous!

Marilyn Cruickshank: Marilyn spent the summer analyzing BeachCOMBERS data. She’s looking to see if the residence times of stranded birds on Monterey beaches can help with damage assessments and as a predictor of where most birds will wash ashore in future oil spills. Marilyn continued working for the stranding network and learned how to program in Matlab. She even found time to carve a new banjo. Nice wood-working skills, Marilyn!

(more…)

Summer in Moss Landing

July 5, 2013

HFBby Heather Fulton-Bennett, Phycology Lab

Q: What do grad students do during the summer?

A: Thesis! Work! Everything!

We are lucky enough to be at the center of the Monterey Bay, and summers are the perfect time to take advantage of the large marine research community in the area.

headingoutmoss

Heading out of Moss Landing early on an unusually sunny morning. Photo: Heather Fulton-Bennett/MBARI 2013

This summer I am working as an intern at the Monterey Bay Aquarium Research Institute (MBARI), just across the water from Moss Landing Marine Labs in Moss Landing. MBARI’s research focuses on the development and use of marine technology as well as the exploration and monitoring of the ocean. As an intern there, I am working with Drs. Jim Bellingham and Julio Harvey on correlating optical measurements of zooplankton with molecular methods in the laboratory. These measurements will allow us to have a better understanding of the data sent back from in situ instruments as well as giving a better idea of the effects of confounding factors in both the optical and molecular measurements.

In the few weeks I’ve been here, there have been a lot of familiar faces around MBARI. Several other MLML students are taking advantage of MBARI’s facilities to work on projects related to their these, including a couple of my fellow interns, Vignesh Soundararajan and Diane Wyse, who are working with Francisco Chavez and Jim Bellingham respectively.

(more…)

R/V Point Sur in Transit

May 1, 2013

The R/V Point Sur is heading home this week, and students have had the opportunity to help with various science operations and add some cruise time to their resumes by joining up for a leg or two of the trip.  Check out this post by Ashley Wheeler, a first year in the Geological Oceanography Lab at MLML, about her experiences aboard our beloved vessel.

Ashley-Wheeler_headshot

Ashley Wheeler – Photo by Tara Pastuszek

CTD-package-at-sunrise

Ready on deck, the CTD package is set to deploy at sunrise – Photo by Ashley Wheeler

Pinnacles National Monument

September 23, 2012

Who would have thought an extinct volcano can be so very multifaceted and interesting? Not me.

Our Geological Oceanography Class at MLML went to the Pinnacles National Monument the other day, driving up this windy road off of Soledad, California, we see this:

Our professor Ivano Aiello asks the question I very much dread, especially when I have absolutely NO CLUE what the answer could be:

” How do you think these peaks formed that you see in the distance?”

Well, let’s get a bit closer… shall we?

What you see here is actually part of the tube that used to lead into the Magma chamber. The volcano is extinct…no more Magma here, but how did it form?

The usual suspects – a fault line, some major earthquake action, you know the Spiel, Bam volcano. Now, the amazing part is that half of the volcano is actually in Southern California as part of the Neenach Volcanics complex, the other up here in Central California. Due to the position of Pinnacles on a fault line it has been transported all the way up north over the period of 30 million years.

Pinnacles features great hiking opportunities, and if you bring a Geologist friend, an amazingly educational hike at that.

Here you see the original side of the volcano. Smoother than the first formations I showed you:

Here’s Ivano explaining one rock formation type at Pinnacles: The Volcanic Breccia, composed of lava flow cementing multiple types of intrusive rocks that originated from the volcano when it was still active.

Make sure to bring plenty of water on your hike. The heat can be quite overwhelming. We found huge relief from the heat in caves that were definitely not caves as you may have experienced before. These caves were formed by piled-up boulders that went through some major events from earthquakes to subsequent lava flowing over them, cooling, and some more earthquakes, and an occasional landslide as well, oh sure, floods, too.

Bring your flashlight!

This was a treat!

Adventures in Madagascar or On The Importance of Doing a Pilot Study!

September 4, 2012

by Angela Szesciorka, Vertebrate Ecology Lab

This summer I hopped on a plane, flying 29 hours one way (via Paris — ooh la la) over a period of three days to spend nearly a month on the island of Madagascar working on my pilot study.

Madagascar, a former French colony until 1960, is the fourth largest island in the world. Don’t let it fool you. It looks so tiny next to Africa, but it has 44 percent more area than California, and boasts more than 4,800 km of coastline.

Rocky coastline in Madagascar. Photo by Angela Szesciorka.

Most of the country’s export revenue comes from textiles, fish/shellfish, vanilla, and cloves. Newer sources of income include tourism, agriculture, and extracted materials (titanium ore, chromite, coal, iron, cobalt, copper and nickel). Madagascar provides half of the world’s supply of sapphires! But with a GDP of around $20 billion, The Economist rated Madagascar as the worst economy in 2011. Most of Madagascar’s inhabitants are subsistence livers, meaning they live off of what they can grow or catch.

Local fisherman spear hunting for crabs. Photo by Angela Szesciorka.

(more…)


Follow

Get every new post delivered to your Inbox.

Join 57 other followers