Geospatial Ecology of Marine Megafauna Laboratory

“[We] have only one month to survey an inhospitable Antarctic wilderness, the size of Oklahoma, moving at the speed of a bicycle”

– Oscar Schofield, Professor Bio-Optical Oceanography

By: Erin Pickett

There is nothing like a feature film about an upcoming field research project to get you pumped. I’m talking about Antarctic Edge: 70˚ South (now available on DVD, iTunes and Netflix!). In two months a few of us from the Biotelemetry and Behavioral Ecology Laboratory (BTBEL) will be headed down south to participate in the research project that is documented in this film.

The project is called the Palmer Station Antarctica LTER. LTER stands for long term ecological research. The Palmer site is located along the Western Antarctic Peninsula (WAP) and is part of a network of LTER sites around the world that have been established over the last three decades or so for the purpose of long term ecological monitoring. The WAP is a particularly unique place to monitor the effects of climate change because it is one of the most rapidly warming areas in the world. Temperature increases in this region are six times greater than the global average. As a result of increasing temperatures, the peninsula has experience a decline in the extent, concentration and duration of winter sea ice.

After my first viewing of Antarctic Edge with its graphic scenes of calving glaciers I thought, well, that’s a little dramatic. If you watch the preview you’ll get a taste of what I’m talking about. However, in an ecosystem dependent on sea ice, the loss of three months-worth of ice a year is dramatic! The scientists leading the Palmer LTER project have watched the marine ecosystem at Palmer Station transform radically over the course of their careers. Coastal areas along the peninsula more closely resemble the warmer and moister sub-Antarctic rather than a traditionally cold and arid Antarctic climate. The most visible effect of this southward climate shift has been an expansion of sub-Antarctic, or ice-intolerant species, into areas where ice-dependent species are disappearing. Antarctic Edge attempts to convey the urgency and importance of understanding ecological changes like these.

R/V LMG docked at Palmer Station (photo credit: http://www.nsf.gov/od/opp/support/gould.jsp)

The Palmer LTER sampling grid (http://pal.lternet.edu/research/sampling-grid)

In January, a team of researchers from all over the country will board the R/V Lawrence M. Gould (LMG) and depart Punta Arenas, Chile. From Chile we’ll cross the Drake Passage and continue south to Anvers Island, where our research station is located. Personnel and research gear will be exchanged and then the LMG will transit south along a pre-established sampling grid. This grid covers the entire Western Antarctic Peninsula, an area the size of Oklahoma (69, 498 square miles). Over the course of a month we will collect samples and data on nearly every possible component of the marine ecosystem, including everything from microbes and zooplankton to cetaceans.

I will be working with folks from OSU’s BTBEL lab and collaborators at Duke University to study the region’s whale populations. We will be focusing our efforts on humpback whales and we will be using methods such as photo identification, tagging and biopsy sampling to understand more about this species in this area and to learn more about the ecological roles that these large baleen whales play in this fragile marine ecosystem. We are especially interested in learning more about the foraging ecology of this species and how their behavior is influenced by their primary prey, Antarctic krill. 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.

Over the next few months I’ll be keeping you updated on our preparations and journey south. Until then, I encourage you to watch Antarctic Edge: 70˚ South and get pumped!

Fishing with dolphins

By Leila Lemos, Ph.D. Student, Department of Fisheries and Wildlife, OSU

Hello everybody! I am Leila Lemos, a new member of the GEMM Lab. I am from Rio de Janeiro, Brazil, and moved to Corvallis just 2 months ago where I am now taking classes at OSU. Although I have not yet travelled around Oregon to see my surroundings I am loving the fall colors! We don’t have all of this yellow/orange/red in our Brazilian trees; it’s amazing! The green of the pines also enchanted me. What a beautiful place! However, I confess that I do miss being close to the ocean, so I am looking forward to being based in Newport next year. So, since I cannot see the ocean for now, let’s talk a bit about it and the dynamic cetaceans that live there.

My thesis will explore the impact of ocean noise on the physiology of gray whales, but I have not started my fieldwork yet. So for my first blog post I will discuss a unique interaction between bottlenose dolphins (Tursiops truncatus) and fisherman that occurs in the cities of Laguna, in the state of Santa Catarina, and Tramandaí and Imbé, in the state of Rio Grande so Sul, in southern Brazil. Unlike most relationships between fishermen and marine mammals, this interaction is mutually beneficial and both species appear to seek each other out. There are only three other places in the world where a similar interaction occurs: Mauritania, in the west coast of Africa; Myanmar, in the south coast of Asia; and in the east coast of Australia.

In the southern Brazil, dolphins and artisanal mullet fishermen have adapted their hunting strategies to perform a cooperative foraging strategy. Cast net fisherman wait for the dolphins to arrive and then observe their behavior. Only when a specific aggressive behavior pattern is observed do the fishermen enter the water with their nets. The dolphins move closer to the fishermen and begin rolling movements that trap fish close to the margin. The fishermen wait to throw their cast nets into the water until the dolphins perform specific and vigorous behaviors described by Simões-Lopes et al. (1998):

the dolphin shows an arched back;
the dolphin exposes its head and hits the surface with the throat;
the dolphin moves rapidly, showing just the dorsal fin, producing a whirl;
the dolphin slaps its tail against the surface.

Fishermen waiting for a signal to throw the cast net in Laguna, Santa Catarina, Brazil. Source: Diário Catarinense, 2013.

Fishermen waiting for a signal to throw the cast net in Laguna, Santa Catarina, Brazil. Source: Notícias UFSC, 2009. — Another shots of fishermen waiting to throw the cast net in Laguna, Santa Catarina, Brazil. Source: Notícias UFSC, 2009.

This partnership is mutually beneficial. Dolphins use the disturbance caused by the net to separate the mullet school and trap individual prey. This method allows the dolphins to reduce escapees, capture more prey, and ultimately increase their net energy gain.

For fishermen, this cooperative association leads to greatly increased captures of mullet. The water in the southern coast of Brazil is too murky for the fishermen to see the schools and therefore know where to throw their net. By watching the behavior of the dolphins, the fisherman is able to throw his net at the exact time and location of the passing mullet shoal.

While this symbiotic relationship is remarkable, it is also hereditary in both humans and dolphins. The calves follow their mothers during the foraging events and learn the movements used in this cooperative behavior. Likewise, the fishermen learn their techniques from their relatives through observation. This cross-species interaction has created cultural ties of great socioeconomic value for both humans and dolphins. Furthermore, this unique relationship demonstrates how clever and adaptive both taxa are when it comes to capturing prey. Wouldn’t it be great if more teamwork like this were possible?

Here is a video that captures this amazing relationship:

Until next time and thanks for reading!

Bibliographic References:

Diário Catarinense, 2013. Interação entre golfinhos e pescadores em Laguna chama a atenção de produtores da BBC. Retrieved from http://diariocatarinense.clicrbs.com.br/sc/geral/noticia/2013/05/interacao-entre-golfinhos-e-pescadores-em-laguna-chama-a-atencao-de-produtores-da-bbc-4151948.html

Notícias UFSC, 2009. Especial pesquisa: UFSC estuda pesca cooperativa entre golfinhos e pescadores em Laguna. Retrieved from http://noticias.ufsc.br/2009/08/especial-pesquisa-ufsc-estuda-pesca-cooperativa-entre-golfinhos-e-pescadores-em-laguna/

Simões-Lopes, P.C., Fabián, M.E., Menegheti, J.O., 1998. Dolphin Interactions with the mullet artisanal fishing on southern Brazil: a qualitative and quantitative approach. Revta bras. Zool. 15(3), 709-726.

On learning to Code…

By Amanda Holdman, MSc student, Dept. Fisheries and Wildlife, OSU

I’ve never sworn so much in my life. I stared at a computer screen for hours trying to fix a bug in my script. The cause of the error escaped me, pushing me into a cycle of tension, self-loathing, and keyboard smashing.

The cause of the error? A typo in the filename.

When I finally fixed the error in my filename and my code ran perfectly – my mood quickly changed. I felt invincible; like I had just won the World Cup. I did a quick victory dance in my kitchen and high-fived my roommate, and then sat down and moved on the next task that needed to be conquered with code. Just like that, programming has quickly become a drug that makes me come back for more despite the initial pain I endure.

I had never opened a computer programming software until my first year of graduate school. Before then Matlab was just the subject of a muttered complaint by my college engineering roommate. As a biology major, I blew it off as something (thank goodness!) I would never need to use. Needless to say, that set me up for a rude awakening just one year later.

The time has finally come for me to, *gulp*, learn how to code. I honestly think I went through all 5 stages of grief before I realized I was at the point where I could no longer put it off.

By now you are familiar with the GEMM Lab updating you with photos of our charismatic study species in our beautiful study areas. However, summer is over. My field work is complete, and I’m enrolled in my last course of my master’s career. So what does this mean? Winter. And with winter comes data analysis. So, instead of spending my days out on a boat in calm seas, watching humpbacks breach, or tagging along with Florence to watch gray whales forage along the Oregon coast, I’ve reached the point of my graduate career that we don’t often tell you about: Figuring out what story our data is telling us. This stage requires lots of coffee and patience.

However, in just two short weeks of learning how to code, I feel like I’ve climbed mountains. I tackle task after task, each allowing me to learn new things, revise old knowledge, and make it just a little bit closer to my goals. One of the most striking things about learning how to code is that it teaches you how to problem solve. It forces you to think in a strategic and conceptual way, and to be honest, I think I like it.

For example, this week I mapped the percent of my harbor porpoise detections over tidal cycles. One of the most important factors explaining the distribution and behavior of coastal marine mammals are tides. Tidal forces drive a number of preliminary and secondary oceanographic processes like changes in water depth, salinity, temperature, and the speed and direction of currents. It’s often difficult to unravel which part of the tidal process is most influential to a species due to the several covariates related to the change in tides , how inter-related those covariates are, and the elusive nature of the species (like the cryptic harbor porpoise). However, while the analysis is preliminary, if we map the acoustic detections of harbor porpoise over the tidal cycle, we can already start to see some interesting trends between the number of porpoise detections and the phases of the tide. Check it out!

Now, I won’t promise that I’ll be an excellent coder by the end of the winter, but I think I might have a good chance at being able to mark the “proficient” box next to Matlab and R on my first job application. Yet, whatever your reason for learning code – whether you are an undergraduate hoping to get ahead for graduate school, a graduate student hoping to escape the inevitable (like me), or just someone who thinks getting a code to work properly is a fun game – my advice to you is this:

Google first. If that fails, take mental breaks. Revisit the problem later. Think through all possible sources of error. Ask around for help. Then, when you finally fix the bug or get the code to work the way you would like it to, throw a mini-party. After it’s all over, take a deep breath and go again. Remember, you are not alone!

Happy coding this winter GEMM Lab readers – and I wish you lots of celebratory dancing!

New Zealand’s mega-fauna come to Newport, Oregon.

By Olivia Hamilton, PhD Candidate, University of Auckland, New Zealand.

The week leading up to my departure from New Zealand was an emotional rollercoaster. Excited, nervous, eager, reluctant… I did not feel like the fearless adventurer that I thought I was. D-day arrived and I said my final goodbyes to my boyfriend and mother at the departure gate. Off I went on my three-month research stint at the Hatfield Marine Science Center.

Some thirty hours later I touched down in Portland. I collected my bags and headed towards the public transport area at the airport. A young man greeted me, “Would you like to catch a taxi or a shuttle, ma’am?” “A taxi please! I have no idea where I am”, I responded. He nodded and smiled. I could see the confusion all over his face… My thick kiwi accent was going to make for some challenging conversations.

After a few days in Portland acclimatizing to the different way of life in Oregon, it was time to push on to Newport. I hit a stroke of luck and was able take the scenic route with one of the girls in the GEMM lab, Rachael Orben. With only one wrong turn we made it to the Oregon coast. I was instantly hit with a sense of familiarity. The rugged coastline and temperate coastal forest resembled that of the west coast of New Zealand. However, America was not shy in reminding me of where I was with its big cars, drive-through everything, and RVs larger than some small kiwi houses.

The Oregon Coast. Photo by Olivia Hamilton.

We arrived at Hatfield Marine Science Center: the place I was to call home for the next quarter of a year.

So, what am I doing here?

In short, I have come to do computer work on the other side of the world.

Dr. Leigh Torres is on my PhD committee and I am lucky enough to have been given the opportunity to come to Newport and analyze my data under her guidance.

My PhD has a broad interest in the spatial ecology of mega-fauna in the Hauraki Gulf, New Zealand. For my study, megafauna includes whales, dolphins, sharks, rays, and seabirds. The Hauraki Gulf is adjacent to Auckland, New Zealand’s most populated city and home to one of our largest commercial ports. The Hauraki Gulf is a highly productive area, providing an ideal habitat for a number of fish species, thus supporting a number of top marine predators. As with many coastal areas, anthropogenic activities have degraded the health of the Gulf’s ecosystem. Commercial and recreational fishing, run-off from surrounding urban and rural land, boat traffic, pollution, dredging, and aquaculture are some of the main activities that threaten the Gulf and the species that inhabit it. For instance, the Nationally Endangered Bryde’s whale is a year-round resident in the Hauraki Gulf and these whales spend much of their time close to the surface, making them highly vulnerable to injury or death from ship-strikes. In spite of these threats, the Gulf supports a number of top marine predators. Therefore it is important that we uncover how these top predators are using the Gulf, in both space and time, to identify ecologically important parts of their habitat. Moreover, this study presents a unique opportunity to look at the relationships between top marine predators and their prey inhabiting a common area.

The Hauraki Gulf, New Zealand. The purple lines represent the track lines that aerial surveys were conducted along.

Common dolphins in the Hauraki Gulf. Photo by Olivia Hamilton

A Bryde’s whale, common dolphins, and some opportunistic seabirds foraging in the Hauraki Gulf. Photo by Isabella Tortora Brayda di Belvedere.

Australisian Gannets and shearwaters foraging on a bait ball in the Hauraki Gulf. Photo by Olivia Hamilton.

To collect the data needed to understand the spatial ecology of these megafauna, we conducted 22 aerial surveys over a year-long period along pre-determined track lines within the Hauraki Gulf. On each flight we had four observers that collected sightings data for cetaceans, sharks, predatory fish, prey balls, plankton, and other rare species such as manta ray. An experienced seabird observer joined us approximately once a month to identify seabirds. We collected environmental data for each sighting including Beaufort Sea State, glare, and water color.

The summary of our sightings show that common dolphins were indeed common, being the most frequent species we observed. The most frequently encountered sharks were bronze whalers, smooth hammerhead sharks, and blue sharks. Sightings of Bryde’s whales were lower than we had hoped, most likely an artifact of our survey design relative to their distribution patterns. In addition, we counted a cumulative total of 11,172 individual seabirds representing 16 species.

Summary of sightings of megafauna in the Hauraki Gulf.

My goal while here at OSU is to develop habitat models for the megafauna species to compare the drivers of their distribution patterns. But, at the moment I am in the less glamorous, but highly important, data processing and decision-making stage. I am grappling with questions like: What environmental variables affected our ability to detect which species on surveys? How do we account for this? Can we clump species that are functionally similar to increase our sample size? These questions are important to address in order to produce reliable results that reflect the megafauna species true distribution patterns.

Once these questions are addressed, we can get on to the fun stuff – the habitat modeling and interpretation of the results. I will hopefully be able to start addressing these questions soon: What environmental and biological variables are important predictors of habitat use for different taxa? Are there interactions (attraction or repulsion) between these top predators? What is driving these patterns? Predator avoidance? Competition? So many questions to ask! I am looking forward to answering these questions and reporting back.

Gray whale field work wrap-up; sea you later

Hello everyone,

Florence here with an update about the final numbers from this summer’s gray whale field season.

For folks just hearing about the project, my team of interns and I spent the summer alternating between study sites at Depoe Bay and Port Orford to conduct fine-scale focal follows of gray whales foraging in near-shore Oregon waters using a theodolite. That is to say, we gathered 10,186 ‘marks’ or ‘locations’ where whales came to the surface, and by connecting the dots, we are able to create tracklines and analyze their movement patterns. The idea is to document and describe gray whale foraging behavior in order to answer the questions: Are there patterns in how the whales use the space? Is there a relationship between foraging success and proximity to kelp beds? Do behaviors vary between individuals, location, or over time during the season?

All these tracklines are from one whale, Keyboard, visiting the same area multiple times over the course of a month. I'll break this figure down a little later in the post. Notice how the whale consistently returns to the bay just west of the port jetty — All these tracklines are from one whale, Keyboard, visiting the same area multiple times over the course of a month. I’ll break this figure down a little later in the post. Notice how the whale consistently returns to the bay just west of the port jetty

While at our study sites, we often received questions about vessel disturbance on the whale’s behavior. Over the course of the summer, we saw whales completely ignore boats, approach boats, and actively avoid boats. Therefore, we documented these vessel interactions in order to ask questions such as: Does vessel disturbance alter behavior? How close is too close? Does the potential for vessel disturbance vary depending on (1) size of motor, (2) speed of approach, (3) type of vessel, i.e. kayak, fishing boat, tour boat, (4) the number of vessels already in the area, (5) amount of time a vessel has been following a whale, (6) time of season, (7) the presence of a calf or other whales? The end goal, once the data have been analyzed, is to bring our results to local vessel operators (commercial and recreational) and work together to write reasonable, effective, and scientifically informed guidelines for vessel operations in the presence of gray whales.

And now, the numbers you’ve all been waiting for, here is the tally of our data collection this summer:

	Boiler Bay	Graveyard Point	Humbug Mountain
Whales total	80	73	28
Boats total	307	105	7
Total survey time (HH:MM:SS)	122:22:41	72:49:17	50:22:35
Total survey time with whales (HH:MM:SS)	64:47:54	80:39:57	22:59:00
Total Marks	4744	4334	1108

Table 1. Summary of survey effort for gray whale foraging ecology field season summer 2015

Whale named "Keyboard" visits graveyard head multiple times. Green track: 7.21.15, Pink track: 7.21.15, Teal track: 7.30.15. The orange polygons are approximate locations of kelp patches. — Whale named “Keyboard” visits graveyard head multiple times. Green track: 7.21.15, Pink track: 7.21.15, Teal track: 7.30.15. The orange polygons are approximate locations of kelp patches.

"Keyboard" continues to visit. Red trackline: 8.27.15, white trackline: 8.28.15, purple trackline: 8.28.15 — “Keyboard” continues to visit. Red trackline: 8.27.15, white trackline: 8.28.15, purple trackline: 8.28.15

Whale 130 foraged near Boiler Bay for 5.5 hours on Aug 12. Trying to look at the whole trackline in one go is a little complicated, so let’s break it down by hour.

This panel shows hours 4-6 of the track. Things get more complex as various vessels use the same area. Whale 130 is always in red.

So, what does this all mean? Well, the unsatisfying answer is of course: we don’t know yet. However, it is my job to find out! I will spend the fall and winter processing data, writing and running behavioral models, communicating my successes and frustrations, and finally presenting my results to the community.

The human eye is well adapted to pick out patterns. Test yourself – what trends can you see in these images? Are there areas that the whales seem to prefer over other areas? In the Port Orford images with Keyboard & our kelp patches, does our theory of a relationship between whale presence and kelp patches seem valid?

This field season would not have been possible without the help of some truly excellent people. Thank you Cricket and Justin and Sarah for making up the core of Team Ro”buff”stus. It was a pleasure working with you this summer. Thank you to guest observers and photographers Era, Steven, Diana, Cory, Kelly, Shea and Brittany for filling in when we needed extra help! Thank you to our support network down in Port Orford: Tom, Tyson and the team at the Port Orford Field Station – we appreciate the housing and warm welcome, and to Jim and Karen Auborn and the Port of Port Orford for allowing us access to such a fantastic viewing location. Thank you to Oregon State Parks for allowing us access to the field sites at Boiler Bay and Humbug. Finally, thank you to Depoe Bay Pirate Coffee Company for keeping us warm and caffeinated on many foggy, cold early mornings. This work was funded by the William and Francis McNeil Fellowship Award, the Wild Rivers Coast Alliance, and the American Cetacean Society: Oregon Chapter.

Fair winds,

Florence

Whale mAPP Goes Global!

By Courtney Hann

The Whale mAPP team of Lei Lani Stelle, Melo King of Smallmelo Geographic Information Services, and me (Courtney Hann) has been busy recruiting ocean enthusiasts and applying for grants to fund volunteer-suggested Whale mAPP revisions. As a refresher, Whale mAPP is an Android-based mobile application that can be used by anyone to record marine mammal (whale, dolphins, porpoises, pinniped) sightings around the world. It is easy to sign up as a beta tester on the Whale mAPP website, www.whalemapp.org, and use the mobile app on your personal device to help scientists and conservationists learn more about marine mammals.

What is most spectacular is that the app has truly gone global! We now have over 100 users and are getting a couple new user requests each week! These volunteers have been busy at work this summer, recording thousands of marine mammal sightings during the summer months. Sightings have streamed in from the U.S. West Coast, Hawaiian, Japanese, and Russian waters, the Caribbean, the middle of the Southern Ocean, and the Greenland Sea. You can click on any sighting on the web map to see details about what species were recorded, how many were seen, what their behavior was like, the weather conditions that day, and other notes.

This map shows global marine mammal sightings recorded by Whale mAPP volunteers. The blue whale tale icons represent whale sightings, the pink dolphin icons represent dolphin or porpoise sightings, and the orange seal icon represents a seal, sea lion, or sea otter sighting. Data recorded during each sighting include the location (automatic), the species, the weather and sea conditions, the number of individuals, and a five-star confidence rating (http://www.whalemapp.org/map/#/, CEBCO, DeLorme | Melodi King, MS GIS Program – Cohort 21, University of Redlands).

If we zoom into my particular study area of Southeast Alaska, we see that volunteers are still doing a superb job at recording the abundant number of marine mammals in the area.

Zoomed in image of the northeast Pacific, showing marine mammal sightings recorded this summer in Alaska, Southeast Alaska, British Columbia, and Washington (http://www.whalemapp.org/map/#/, CEBCO, DeLorme | Melodi King, MS GIS Program – Cohort 21, University of Redlands).

Initial funding through the California Coastal Commission Whale Tail grant facilitated the creation of the Whale mAPP project, while current funding from the Hatfield Marine Science Center’s Mamie Markham Research Award that I received this Spring 2015 is funding the top two revisions requested by our users:
(1) Enable the user to edit observations during a trip and after a trip has ended. This revision is huge, was requested by almost every user I spoke to in Southeast Alaska, and was shown very evidently in our survey results.
(2) Add site-specific animal behavior and descriptions to Whale mAPP. For Southeast Alaska, this means adding the famous bubble-net feeding behavior to our list, as well as important descriptions of how to identify, recognize, and understand marine mammal behaviors.
In addition to the above two revisions, a few other revisions will be completed by Smallmelo Geographic Information Services this winter. These revisions include improving world-wide coverage of region-specific species lists, creating tools for validating the quality of the data, enabling data downloads directly from the website (www.whalemapp.org), and including the beta-tested “marine mammal fun facts” into the global application.

All of these incredible accomplishments and progress toward a successful, educational, fun, and data-generating marine mammal citizen science project could not have happened without Dr. Lei Lani’s open mind toward incorporating more people, including me, into her Whale mAPP project. Whale mAPP represents a new age of scientists, one of collaboration across disciplines (ecology, statistics, coding, education, and more!), and one that over-steps previous boundaries to re-define science. I hope that my participation with Whale mAPP and future citizen science projects will inspire individuals to know and feel that they can be scientists and that we can inspire the world to work together for the common good of our oceans.

From Oregon to New Caledonia: Crossing latitudes

**GUEST POST** written by Solène Derville from the Institute of Research for Development, Nouméa, New Caledonia. Entropie Lab

Last term I posted about the analysis of Maui dolphin habitat selection I have undergone under Dr Leigh Torres’ supervision at OSU. The results of this work are now compiled in a manuscript which I hope to submit for publication very soon.

Since I last posted on this blog, many things have changed for me: I went back to France at the end of May (with a heavy heart from leaving Newport and my dear lab mates) and I have graduated from the Ecole Normale Supérieure of Lyon and successfully completed my Biology Master’s degree. In September, I will start a PhD on the spatial ecology of Humpback Whales in New Caledonia. I will work at the French ‘Institut de Recherche pour le Développement’ in Nouméa, New Caledonia, under the co-supervision of Dr Claude Payri, Dr Claire Garrigue, Dr Corina Iovan (IRD) and Dr Leigh Torres (GEMM Lab, OSU).

Before telling you a bit more about my project and this summer field season, I would like to introduce the beautiful place where I will be spending the next 3 years. New Caledonia is an archipelago located in the southwest Pacific Ocean, east of Australia. This special overseas French collectivity includes a main island (Grande Terre) and several other islands such as the Loyalty Islands. New Caledonia’s lagoon is the largest in the world and was added to the list of the UNESCO world heritage sites in 2008, because of its exceptional biodiversity including many emblematic species such as humpback whales, dugongs, marine turtles, manta rays…and many others.

).New Caledonia location in South Pacific Ocean (map: http://springtimeofnations.blogspot.jp

Map of the New Caledonian Archipelago (map: http://crosbiew.wordpress.com).

Moreover, the ‘Natural Park of the Coral Sea’ was established very recently by the New Caledonian to protect this biodiversity hotspot. This monumental marine park spans 1.3 million square kilometres and is, to date, the largest protected area on the planet. As the detailed management plan for this park will be progressively established in the coming years, there is a local need for more information about marine mega-fauna space use in order to define key areas for wildlife conservation. Thus, the description of the humpback whales ecological niche in New Caledonian waters is the next logical step to initiate conservation planning. The effect of human activities needs to be investigated as the New Caledonian humpback whales population forms an isolated breeding sub-stock and is exposed to mining industry intensification, shipping, harbour construction and boat recreation associated to tourism development.

The general aim of my project is to investigate how humpback whales are using their habitat within and between reproductive areas of Oceania in order to facilitate their conservation at the scale of giant marine reserves (new generation of marine protected areas over vast surfaces exceeding hundreds of thousands of square kilometres). I will therefore focus on the spatial ecology of humpback whales in the New Caledonian Exclusive Economic Zone, with several specific aims:

1/ to quantify the spatio-temporal patterns and dynamics of humpback whale distribution in New Caledonian waters in order to identify key areas for the species and determine if these areas change over time or depending on social context.

2/ to assess the connectivity and movement patterns between areas of interest at individual scale.

3/ to document humpback whale use of habitat in relation to environmental factors and include these results in the broader-context of the South Pacific Ocean breeding areas.

4/ to provide a spatial and temporal assessment of the anthropogenic activities risks to humpback whales in New Caledonia.

I will rely on a large amount of data collected between 1991 and present, and provided by Opération Cétacés (an NGO involved in scientific research on humpback whales and other marine mammals in Oceania since 1996), including boat-based, land-based and aerial observations, satellite tracking and individual-based information (via Photo-Identification and genotyping).

This year, I am taking part in the summer field mission undergone by Opération Cétacés in the South Lagoon. I am currently living in Prony, a little village located along the southern coast of Grande Terre. No electricity, no internet, whale watching from 7am to 4pm on a daily basis: the real life!

In my next post I will tell you a bit more about this field trip with Opération Cétacés but for now, I will let you enjoy these few pictures!

Prony Bay (© S. Derville)

Rémi, Claire and Daisy standing next to the “Cap N’Dua” lighthouse from which land observations are made. Whales can be spotted up to 20 nautical miles offshore (© S. Derville)

View to the East of Cap N’Dua (© S. Derville)

Breach observed a few days ago in the South Lagoon (© C. Garrigue)

Inverted peduncle slap (the whale is lying upside down in the water and energetically slapping the surface with its fluke) (© S. Derville).

Not Everyday is Gray (just most of them)

As Amanda explains quite nicely in her previous blog post, research is not always glamorous, and we don’t always see the species we’ve come out to the field to study. However, that doesn’t mean that there aren’t other cool species out there to spot! Here are some common (and uncommon) visitors to some of our research sites this summer.

Also, if you continue to the bottom, we’ve included some cool videos of (1) gray whale sharking behaviour, (2) Gray whale swimming (top down full body view), and what it looks and sounds like when we’re doing one of our close-in focal follows. Enjoy!

A very unexpected, but very welcome visitor! Spotted off Boiler Bay August 10. — A very unexpected, but very welcome visitor! Blue Whale spotted off Boiler Bay August 10.

Often in pairs, we've started seeing more of these lately as they come back north from the breeding grounds further south. — Often in pairs, we’ve started seeing more of these California sea lions lately as they come back north from the breeding grounds further south.

fluffy crow — A young crow fluffs up in the breeze

Humpback Whale which has been hanging out around Depoe Bay for the past two weeks. Its split dorsal fin makes it easy to recognize! Notice the darker color than the grays we usually see.

Spotted at Graveyard Point — A Great Egret spotted at Graveyard Point

Long Billed Curlew — A long billed curlew drops by for a visit

This chick waits patiently for parents to bring a meal

We see the Osprey mutliple times a day in Port Orford as there are a couple of nesting pairs with chicks to feed. — We see the Osprey multiple times a day in Port Orford as there are a couple of nesting pairs with chicks to feed.

Our Oystercatchers at Boiler Bay have also successfully fledged a pair of chicks while we've been watching! — Our Oystercatchers at Boiler Bay have also successfully fledged a pair of chicks while we’ve been watching!

There are at least two pairs of Peregrines with chicks in Port Orford as well. This one brings home a catch! (possibly murre or guillemot chick?)

If you remember a few weeks ago, we shared photos of gray whale “sharking” behaviour. Well, now we have video! Enjoy:

Here’s what it looks like from the top of Graveyard Bluff when a whale swims by below us!

We get really excited by this behavior because its positive proof that the whales are successfully foraging!

and here is a fluke!

We’ll be back soon with more updates from Port Orford.

Fair winds,

Florence & the rest of Team Ro”buff”stus

An insight into what Marine Mammal Observing is really like!

By Amanda Holdman

It’s August of 2015. That means I have exactly 2.5 months left until my field season and data collection for my masters comes to a close. At the end of October, I will have collected exactly 2 years of visual data on marine mammal distributions off of the coast of Newport, Oregon.

This is a bittersweet moment for me. Currently, I am on a 7 hour flight to Scotland to do some initial data analysis on my collected observations, with the help of a workshop offered by the University of St. Andrews. My first time abroad has me pretty restless with excitement on the plane, but with a 9 hour time change, some good rest will be key to being successful at the workshop. As I try to close my eyes, and picture what the next two weeks of what I like to call “Intensive Distance Sampling Summer School” will be like, the stranger next to me inevitably begins to make small talk, beginning with

“So what do you do?”

I usually tend to answer this question in two different ways. When I’m in my science community, I have no hesitation giving my 3 minute elevator speech on what I have been researching for the past year. However, when I’m making small talk with anyone I tend to just say

“I’m a master’s student studying marine mammals”

And that’s about all you need to say to get everyone’s attention around you! With a little more detail, I explain that I run transects to collect visual observation data of marine mammals to assist with understanding their patterns in distribution and habitat use. This explanation is always followed up with:

“Man, you’ve got the coolest job ever! What’s it like doing this all the time?”

Again most of the time I get this question, I’m usually conversing with people visiting the west coast hoping to see a large gray whale on vacation; or young children who haven’t yet figured out that marine biology isn’t just about dolphins and pretty coral reefs – but it’s still good to inspire them! Just last week even, I ran into someone on the beach that told me his daughter thinks I’m a rock star for teaching her that you can research the sounds that whales, dolphins, and seals make. (His daughter attended Marine Science Day back in April, and I showed her some recordings of sounds – but I’ll carry this compliment with me for a long time)

But when people ask me how awesome my job is, I tend to keep the morale up and I usually answer

“yep, it’s pretty awesome. I love it! ”

But to be honest, sometimes… it isn’t.

For me, there are four components that equate to a great day of fieldwork: ocean conditions, marine mammals, the boat itself, and equipment (hydrophones, GPS, CTD, camera, etc.)

So in reality…

“The flow of research season goes a lot like this: whales are present, but ocean is impossible; or ocean is calm but the whales are gone; or both whales and ocean are good but the boat breaks down; or everything is working but the rain last night brought in some fog and ruined the visibility” (From Hawaii’s Humpbacks: Unveiling the Mysteries)

AND EVEN on the rare chance that everything goes right – observing marine mammals is hard and uncomfortable – 14 hours of standing with back pain, squinting into the sun until you see one part of the water that looks a little different than the others. I mean really there isn’t much on earth that’s more enormous than the ocean.

This sounds like a lot of negativity, but I am in Scotland currently to resolve some of these minor setbacks we encountered during field collection. Using a statistics program called DISTANCE, we can take into account environmental conditions, sea state, observer bias, etc. When we combine all of these factors together we create a detection function or a ratio of the animals we saw, compared to those we missed. Eventually we end up with an abundance estimate of how many animals are in our study area.

Analyzing the results of my observations this week has provided me with the realization that my time on a boat is coming to an end. In my two years of fieldwork collection, marine mammal observing has molded me into the type of person that has what it takes to do this kind of research: dedicated, tolerant to pain, boredom, and frustration, and most importantly passionate about what I am doing.

Passion is definitely a prerequisite for the life of a GEMM student. Graduate school gives you the chance to be reflective and the time to carefully wade through information. I’ve always had a strong desire to learn, and when I get to combine that with my personal interests, it turns out graduate school can be quite the rewarding initiative.

It’s easy to be discouraged sometimes, especially in an intense and competitive environment like scientific research. I can assure you though, even on our unlucky days, when we’ve swallowed all of the truths about the difficulties of what we do and we’re frustrated enough to give up, our luck turns – usually right when we need it to.

I think the BBC Zoologist, Mark Carwardine, knows just how I feel in saying, “There are few things more rewarding than seeing the worlds’s largest animal in its natural habitat!

Thanks for reading!

We need all the “Kelp” we can get!

Hello from Hatfield Marine Science Center! This is Justin bringing you the latest and greatest in Gray Whale news. But first, let me fill you folks in with some info about me. I am an undergraduate student, transitioning into my senior year, with Oregon State University’s Fisheries and Wildlife Department. In addition to my major, I am also minoring in statistics; crazy right? I have hopes and dreams of working in Marine Ecology, and I believe working on this Gray Whale project is a fine start! Which means, this summer, I have had the fortunate opportunity to work alongside the lovely Florence van Tulder, the mastermind behind the project, as well as Cricket and Sarah, the other two charismatic interns.

Our team name is derived from the scientific name of the gray whale: E. robustus, and the colorful "buff" scarves you can see us wearing on most days. — Our team name is derived from the scientific name of the gray whale: E. robustus, and the colorful “buff” scarves you can see us wearing on most days. (Left to right: Sarah, Florence, Cricket, Justin)

As we were wrapping up our two week stint in Port Orford, We observed the Gray Whales exhibiting some interesting behavior; they seemed to move from kelp patch to kelp patch, almost as if they were searching for something. What could be hiding under the luscious stands of Nereocystis luetkeana, otherwise known as bull kelp? Well, with the presence of defecation ( whale droppings) left behind from diving whales near many of the floating kelp patches, one culprit came to mind- mysid shrimp. Mysid shrimp are believed to be a primary prey source of the Gray whales.

Calmly approaching the kelp, this whale takes his time to observe his surroundings

Naturally, my curiosity got the best me and I ended up spending hours on end conducting literature searches and looking for bathymetry maps, thanks to Florence. All joking aside, I asked Florence if we could use our fancy Theodolite to assess or roughly map the distribution of the kelp patches. We would create polygonal shapes of the kelp on a map and observe how the whales move with respect to the kelp. The idea being, to get a better of picture of the relationship between the whales and the kelp, if any relationship exists at all. It is still a work in progress, due to our survey sites getting all kinds of “fogged” up. When the kinks are worked out and we have some useful visual data, we will post an awesome photo.

A quick breather before heading down into the depths near the kelp. (it's even heart shaped!) — A quick breather before heading down into the depths near the kelp. (it’s even heart shaped!)

This large white tailed beauty bounced between kelp patches like a pinball!

Port Orford didn’t just bring us sweet whales, it brought the heat! Temperatures were up to almost the nineties the last week in July! We beat the heat with plenty of hydration and sun block and the predicable wind patterns became a savior on those sweltering days giving us temporary relief. The heat seemed to tease out other critters as well. We saw a variety of birds, from turkey vultures, Peregrine Falcons, Ospreys, Bald Eagles, and even Egrets! In the water we saw baby Harbor seals, and some bonus River Otters.

This is our "tripod" of river otters! — This is our “tripod” of river otters!

In more recent news, August 8^th marked our first full month of surveying between our two whale hotspots. However, the term “hotspot” doesn’t always seem to be fitting. This past week has been a tough one for the team and I up in Boiler Bay due to less than optimal weather conditions and our survey site has been exposed to an abnormal cycle of fog. Our friendly “neighborhood” grays have been a bit sparse, and yet, we have had Humpback Whales grace us with their presence and these whales have been spotted during several survey days this week! ( In the tradition of opportunistic data, we even tracked one of them.)

The track-line for whale 118 - a humpback who has been hanging out near Boiler Bay all week. — The track-line for whale 118 – a humpback who has been hanging out near Boiler Bay all week.

This summer has been very fun because not only do we get to watch whales every day, but when we are in Boiler Bay, we have the opportunity to meet fascinating people from all over the world! The positive support for the project coming from the community is quite a nice touch to our days in the field. If you are ever in the neighborhood, stop by and say hello, maybe share a whale’s tale or two!

Gray whales do not "fluke" very often, so its always a treat when we get a picture of one! — Gray whales do not “fluke” very often, so its always a treat when we get a picture of one!

Share this:

Share this:

Share this:

Share this:

Share this:

Share this:

Share this:

Share this:

Share this:

Share this: