Month: January 2016

Crossing the Drake Passage

Well we are now on Day three of the ship. Unfortunately the rocking of the vessel does not help me sleep. But I guess the more I am awake the more time I can spend on the bridge looking for animals.

We crossed the 60th parallel (60 deg. South) at about 10:35 this morning. It is currently 3:23 pm and a huge bout of fog has come in and surrounded us, making whale sightings a bit more challenging. Just prior to crossing the 60th parallel, we crossed over into the southern ocean. In doing so the temperature dropped from about 4°C to about 1°C. It even snowed this morning.

We spotted our first whale at about 8:30 am. Passed by a bunch of fin whales. They are easy to spot at distance as their blow towers over the rest of the water in a cloud of mist. They have a smaller dorsal generally as compared to the sei whales we seen coming through the straits of Magellan and are an olive/brown color. Have made several sightings of these guys through out the course of the day, of which one individual decided to roll and show the bottom of his/her left fluke blade.

We have also started to see some different bird species as well, my favorite of which is the cape petrel. Their lacey, checkerboard black and white patters are just stunning. We have also seen some giant petrels, Wilson’s storm petrels, grey-headed albatross and now some light-mantled sooty albatross.

At about 7:30 I noticed some spray coming across the water, the winds were not so bad so I assumed there were some whales near by. Not long after a giant dorsal fin emerged about 20 ft starboard of the vessel. It was a group of three killer whales, of which one was a male (have large dorsal fins). They did not stay for long. Once they got closer they appeared to take a deep dive and disappear.

We are travelling first to a station at Cape Shirreff to drop off a scientist and pick up their garbage. From there we will proceed to Palmer Station (another 20 hours or 200 miles) traversing through the Gerlache Strait. We should finally arrive at Palmer station sometime the afternoon of the 8th. Hopefully we can be up and running in about a day.

Here is the current weather in the Drake Passage: Swells about 4-6 ft. high, we are in roughly 4000 m of water. The wind is travelling on average of 15 knots and the wind chill is -11.8° C. The water temperature is now 1.07° C.

Cape Petrel

Fin Whale

Giant Petrel

Presumed Wandering Albatross

Hello from the straights of Magellan!

The R/V Lawrence M. Gould departed Punta Arenas, Chile yesterday, marking the beginning of the annual Palmer LTER research cruise. Myself (Erin Pickett) and my lab mate Logan Pallin, are looking forward to sharing our adventures and research with you over the next three and a half months! Logan and I are graduate students at Oregon State University’s Marine Mammal Institute. While on the cruise and at Palmer Station, Logan and I will be working with our graduate advisor, Dr. Ari Friedlaender, and with Dr. Doug Nowacek from Duke University. Ari and Doug are two of the Principal Investigators leading the cetacean component of the Palmer LTER project.

The work that we will be doing over the next few months is part of a long term ecological research (LTER) program based out of Palmer Station, Anvers Island, along the Western Antarctic Peninsula. Over the next few months our whale team will be conducting cetacean surveys and collecting acoustic-based prey measurements of Antarctic krill.  Much of our effort will be focused on humpback whales, and we will be using methods such as photo identification, tagging and biopsy sampling to understand more about this species recent recovery in this area and to learn more about the ecological roles that these large baleen whales play in the marine ecosystem along the peninsula.

We are especially interested in learning more about the foraging ecology of humpback and minke whales, how their behavior is influenced by their primary prey (Antarctic krill), and how their population demographics (genetics, sex, hormones) may change over time.  Many of the region’s top predators share this prey resource, which is declining as a result of sea ice loss. A central objective of our research is to understand how climate induced changes in this polar marine environment are affecting these top predators.

Until we reach the northern boundary of our study area where we will begin our official surveys, we will be occupying ourselves on the ship with a bit of bird watching. I’ll be teaching Logan how to distinguish a duck from a petrel, and a “freaking huge bird” from a Royal albatross. So far in addition to a couple of royal albatross we’ve spotted white chinned petrels, black-browed albatross, and South American terns. It’s nearly tropical outside this afternoon, breezy and 11.2˚C, and a group of Peale’s dolphins are riding our bow wake, so enough writing for one day!