Monthly Archives: November 2016

Corals need someone in their corner

Katherine holding all nine of the coral species she is studying for one chapter of her dissertation.

Climate change has begun to show its effects around the world in the form of warming temperatures, increased major weather events, and shrinking global sea ice. Unfortunately, one of the hardest hit species on earth is likely to be the corals, a marine animal, yes I said animal, whose beauty is well documented. Ocean acidification is limiting calcification, a process used for coral growth, and warming ocean temperatures is causing bleaching of once vibrant coral reefs. However, there is good news for everyone who appreciates tropical oceans, the diversity of ocean life, or just plain old natural beauty. Although it’s still uncertain how corals will be able to adapt to the rapidly changing ocean environment, coral scientist Katherine Dziedzic is optimistic about the future of coral.

Katherine is a fourth year PhD student in Integrative Biology. Her research in the Meyer lab is helping to pinpoint some bright spots in coral adaptation. With the help of many collaborators around the world, Katherine is trying to find the survivors in the coral community, identify the genes theses corals are using to adapt, and then “teach” the rest of the corals how to thrive in a warmer ocean. Katherine is using a research method first developed for human disease studies called genome wide association studies (GWAS) to determine the genetic variants that are most highly correlated with bleaching corals . Recent results have been promising and Katherine is hoping to narrow in on a potential gene, or genes, of interest. Unfortunately, progress to save the coral is slow going because much of the coral research has not been translated into action, despite the reefs’ charismatic depiction in nature documentaries.

Katherine diving in Bocas del Toro, Panama collecting samples for her acclimation experiment.

A well-functioning national research program should function as a giant cycle to support government policy. Research improves knowledge, knowledge informs policy decisions, policy decisions lead to new areas of research. However, there are often large gaps between the scientific community, the policy makers, and the general public. Katherine hopes to help bridge the gap between science and policy decisions once she finishes her PhD work. She has completed a graduate certificate in marine resource management and plans to use her knowledge base in coral research to help governmental organizations take better care of our precious ocean resources.

If you want to hear about how Katherine got into coral research, you can listen to Katherine’s episode of Inspiration Dissemination from about two years ago. However, this time we’ll talk to Katherine about what she’s discovered about coral adaptation and her ongoing transition from PhD student to science policy advisor. Tune in Sunday, 12/4 at 7pm (PST) on KBVR-FM!

Dirt: It’s under all of us!

We depend on the humble soil beneath our feet to grow the cotton in our shirts, feed the world with fruits and vegetables, and growing all the commodities necessary to make beer and whisky alike! Given the range of functions soils have on earth it’s no surprise soils themselves have very different colors, sizes, and even smells! If we look closely at soils, especially their horizons resembling layers of a cake, they can be read to ascertain how nutrients got there, how long those nutrients can last for the plants above, and what to do if an area needs to be remediated.

Great soil profile showing the burial of an old soil (reddish-grey) formed on a basalt flow. The soil surface was buried by volcanic ash ejected during the cataclysmic eruption of Mt. Mazama which is now Crater lake. (Eagle Cap Wilderness, Summer 2015)

12cm is of soil is precariously protected from alpine winds by a thin gravel mulch (Summer 2015).

Even though humans rely on soils for our health and comfort, we too often take soil for granted. But our guest reminds us exactly how essential soils are to life! Vance Almquist is a PhD student joining us from the Crops and Soil Science Department, in the College of Agricultural Sciences, and focuses on how soils develop in wildland environments, as well as how to read soils in order to understand its historical record keeping. Vance is also known as a soil pedologist, or someone who studies soil genesis, its transformations, and specializes in how to read the language of soil horizons. You might ask, ‘why do we need to know the history of a soil in order to use it?’

Human society developed in the ‘Cradle of Civilization’, an area known as the Fertile Crescent because (as you guessed it) the soils were extraordinary fertile! To practice higher-level agriculture, early settlers built levees to block the floodwaters. But when they prevented the annual floods soils were no longer getting enough nutrients, salts started to build up, and eventually it lead to a collapse of civilizations. If only they understood the soils’ history, they would’ve know the annual floods are essential to maintaining their prosperous way of life. If we know how soils develop, and how to read them, these are the kinds of problems we can avoid in the future.

Hiking toward China Cap in the Eagle Cap Wilderness to describe and map soils (Summer 2016)

Vance grew up in Utah and before yearning to be a soil scientist he worked at a brewery, trained dogs, and is a master forklift driver. High school was never terribly fun because nothing really challenged him, but he continued to enroll in classes at the local community college. He was really turned onto botany because he always went mushroom hunting as a kid and he saw the practical application of knowing which plants we share the world with. Then he realized how soil science was at the intersection of biology, chemistry, and physics. Here he found his calling because he also noticed how much our economy was overlooking the usefulness of soils and wanted to continue to explore this idea further in graduate school.

Not only can understanding soils avert disasters, but ranges of scientific disciplines are dependent on soils. A botanist can be interested in finding rare flowers, a hydrologist is interested in finding out how much sediment is mucking up the streams, and a meteorologist wants to know how much CO₂ is released into atmosphere. Specific soil properties are needed for certain plants to grow, some soils erode faster than others, and soils can become a source, instead of a sink, of CO₂ emissions! Soils are integrators of many scientific disciplines and I hope you join us to discuss this with Vance. You can tune in on Sunday November 20^th at 7PM on 88.7FM or listen live here.

Horse Farms to Tree Farms: Studying the Relationship Between Land Management and Biodiversity

If you wander forests of the Oregon Coast Range you might encounter a strange sight: exclosures made of timber and steel-braided wire, standing in a clear-cut forest. These exclosures, which stand 100-feet long, 50-feet wide and 8-feet high, are the research and work of Thomas Stokely, a PhD candidate in the department of Forest Ecosystems & Society in the College of Forestry. The exclosures were constructed to study the impact of deer and elk grazing on tree growth, and to address a larger research question in forestry management: What does intensive forest management mean for biodiversity?

Completion of exclosure construction in the Oregon Coast Range

Completion of exclosure construction in Oregon Coast Range

To study the impact of deer and elk on commercial tree growth, Thomas constructed constructed 28 stands in which a team of researchers manipulated the intensity of herbicide spray treatments in each area (non-sprayed, light, moderate and intensive herbicide treatments). For six years, under the direction of his adviser Matthew Betts, Thomas and has measured plant communities, arthropods, herbivory and plantation development inside these exclosures and in open plots where wildlife is allowed free access.

PhD student, Thomas Stokely cutting fence rows through logging slash and large stumps to construct wildlife exclosures

The exclosure research in the Oregon Coast Range relates to Thomas’s goals as a scientist who’s invested in understanding how industry impacts biodiversity. “As the world population grows, we need more resources,” he said. “We want to value the product, but we also value biodiversity and wildlife habitat. Is there a way we can manage for both timber production and wildlife habitat? If so, what role do biodiversity and wildlife play in the management of natural resources? If management alters biodiversity or excludes wildlife, what are the implications for ecosystem functioning?” These are questions that continue to drive his research and his career path.

Mature Roosevelt elk bulls browsing through a plantation with exclosure in the background

Thomas has been interested in plant-animal interactions and the environment since he was a child. Growing up on a horse farm in southwest Missouri, he watched horses grazing and wondered about their relationship with the habitat in and around the farm. He first considered studying the policy side of humanity’s relationship with the natural world, but political science wasn’t a good fit—he wanted to pursue a more hands-on approach to studying biodiversity. After reading about the reintroduction of wolves in Yellowstone, he knew he wanted to work directly with land and habitat management. He earned a BS in environmental science at University of Missouri before coming to Oregon State. Upon completing his PhD, Thomas plans to work in applied ecology where he hopes to use science to guide land management and conservancy practices.

Tune in to hear our conversation with Thomas Stokely on Sunday, November 13^th at 7:00 pm on 88.7 FM KBVR Corvallis or listen live online.

Blood Quantum: A Pass-fail Exam With No Questions

“What are you?” is a common question asked in the United States. Few people when asked say, “American,” simply because they might be of European descent. No matter how recently their ancestors migrated to the United States, 200 years ago, 100 years ago, some European Americans would still say, “Italian,” “English”, or “German.” This question of ancestry now becomes a fun conversation about history and ties to peoples an ocean away.

For American Indians this question carries much more meaning, and “What are you?” becomes a loaded question. American Indians have much more, “American,” blood purity than those of us whose families have lived here for a century or two, but instead of simply stating, “American Indian,” they carry identification cards that list their blood quantum for a particular tribe.

The picture belongs to Marty Two Bulls Sr.
Our source.

Blood Quantum is the practice of quantifying purity of blood as a measure of tribal membership for American Indians. This form of assessment was first used for the Dawes Allotment Act of 1887 which required tribal members to prove that they had one half or more tribal blood purity to be legally recognized as an Indian; the federal standard has since been lowered to one quarter blood quantum. Indigenous people receive benefits of health and education among other things, and blood quantum is a tool for the federal government and for the tribes to decide who can claim these benefits. You may not realize that blood quantum is an ever-diminishing characteristic due to colonization and assimilation. Over time tribes become more and more intra-related and marriage more and more challenging. Thus, the responsibility of the government to native tribal peoples continues to decrease. Ask yourself: Is this by design? In some ways blood quantum protects tribes and the government from supporting people who fraudulently claim American Indian rights, but blood quantum also fractionates communities and can be used as a tool for lateral oppression.

How do you assess your membership to a particular culture? Lineage? Language? Participation in cultural practices? Unfortunately, at present lineage is all that matters for tribal membership. Our guest this week, Max Sage, Masters student in the department of Applied Anthropology, is interested in how American Indians respond to these and other questions about blood quantum. He is investigating their specific knowledge about blood quantum and how blood quantum has shaped their identity and their tribal experience.

For Max, himself a member of the Oneida tribe, these questions have personal significance, and he has been aware of blood quantum since his childhood. “How much native are you?” is a common question. He can precisely answer this, but Max wants to move away from blood quantum. For Max, tribal membership is more than blood, it is support for culture and preservation of culture throughout life. Max, like many American Indians, now face hard choices when it comes to growing their culture. For example, who to love comes with heavy consequences of blood quantum and the membership of his future family in his tribe. Many American Indians across the USA face similar choices: assimilate or isolate. Disenrollment is also occurring across tribes, and blood is called into question before tribal participation.

Max’s research is his life, and his work to illuminate how people identify as American Indian is deeply rooted in his personal experience. He is driven to help grow Indigenous cultures in a meaningful way, and his own ties to his culture motivate his current exploration. For Max, this task doesn’t stop at OSU. Max hopes to continue his work by pursuing a PhD and JD in Native American Policy at the University of Arizona where he will continue to be an ally to all Indigenous peoples.

Tune in to hear our conversation with Max Sage Sunday November, 6 at 7 pm on 88.7 FM KBVR Corvallis or stream the show live.