BioScience Talks Podcast Series
In June 2015, AIBS was pleased to announce the launch of BioScience Talks, a monthly podcast that features in-depth discussions of recently published BioScience articles. Each episode of the interview series will delve into the research underlying a highlighted article, providing the listener with unique insight into the author's work. The interviews are hosted by James Verdier, Senior Editor of BioScience magazine.
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Hydroelectric Dams Kill Insects, Wreak Havoc with Food Webs
Hydropower dams generate more energy than all other renewable sources combined. However, they can also produce dire environmental consequences, including the devastation of aquatic insect populations and the food webs that those insects underpin. A practice called "hydropeaking" is evidently to blame. By altering river flows to meet power-generation needs, hydropeaking generates artificial tides that extirpate insect species. In this episode of BioScience
Talks, we're joined by Dr. Ted Kennedy, a research ecologist with the US Geological Survey's Grand Canyon Monitoring and Research Center. In this month's BioScience
, he and his colleagues describe the underlying phenomenon and the citizen science project that brought it to light. In our discussion, Dr. Kennedy explains his findings and offers possible solutions to the hydropeaking conundrum.
Read the article
Read the full text of Dr. Ted Kennedy's article "Flow Management for Hydropower Extirpates Aquatic Insects, Undermining River Food Webs"
. Article Citation: BioScience (June 01, 2016) 66 (7): 561-575.
Listen to the interview
Landscape Ecology and its Role in Policymaking
The world faces unprecedented environmental transformation. Successfully managing and adapting to a rapidly changing Earth requires the swift action of well-informed policymakers. In a State of the Science report for BioScience
, Audrey Mayer of Michigan Technological University and her colleagues describe a major role for the field of landscape ecology in informing policy and management. She joins us on this episode of BioScience
Talks to chat about the article and discuss some practical applications--both those in use now and those on the horizon. Because landscape ecology operates at multiple scales and across human and natural systems, it is a uniquely powerful tool for those who will make tomorrow's environmental and land-use policies.
Current Methods Cannot Predict Damage to Coral Reefs
The potentially devastating effects of ocean acidification on coral reefs are well known, but the methods used to evaluate the threats are often focused on individual species, viewed in isolation, and often in a laboratory. For this episode of BioScience
Talks, we're joined by Peter Edmunds of California State University, Northridge, who describes that issue and talks about the broad-scale inter-species and inter-population dynamics that may have unforeseen consequences for ocean ecosystems. In particular, differences across scales--from organisms to populations, to communities and ecosystems--will have major impacts on reefs. For instance, differently responding symbiotic species could alter a reef's community structure--and, ultimately, the health of the reef as a whole.
How to Save Aggregated-Spawning Fish
Globally declining fish populations are a frequently cited ecological and commercial calamity, but relatively little attention has been paid to the specific threats faced by fish that gather and spawn in large groups. Because they gather in such large groups, these fish are at particular risk of overfishing and population collapse. In this episode of BioScience
Talks, we're joined by Yvonne Sadovy, of the University of Hong Kong and Science and Conservation of Fish Aggregations (SCRFA), who studies these aggregate spawners. In our discussion, she outlines the unique threats faced by these species, which also include ineffective management techniques better suited toward fish with different life histories. She also outlines the mechanisms that might help preserve these aggregations in the years to come.
Nitrogen's Threat to Biodiversity
Habitat destruction and the direct exploitation of species often occupy center stage in discussions of biodiversity perils. However, indirect harms, such as that posed by nitrogen pollution, remain underappreciated and poorly understood despite playing a key role in species declines. The mechanisms of nitrogen's impacts are diverse and often involve hard-to-pinpoint chains of causality. For this episode, we're joined by Dr. Dan Hernandez of Carleton College and Dr. Erika Zavaleta of the University of California, Santa Cruz. They and their colleagues recently conducted a survey of 1400 species listed under the US Endangered Species Act, finding a total of 78 that face known hazards from excess nitrogen. They describe their findings here.
Plague-Afflicted Prairie Dogs and Modeling Animal-Borne Disease
Animal-borne diseases have ruled the news cycle recently--from Zika and Ebola to SARS and MERS. However, little is known about the spread of these diseases in their animal hosts. More perplexing, the mechanisms that lead to human outbreaks remain elusive. Dr. Dan Salkeld of Colorado State University hopes to change that through the study of plague--the disease responsible for the Black Death in the Middle Ages. Plague is now a worse problem for the prairie dogs that Salkeld studies than it is for humans, but understanding its unique ecology may shed light elsewhere. By using plague and its complex, multispecies dynamics as a model, Salkeld hopes that we can achieve key insights into why, how, and when diseases like Ebola and Middle Eastern Respiratory Syndrome spill over into human populations.
Preventing Midwest Grain Failures
Across the United States, record quantities of corn and soybeans have been harvested in recent years. However, according Dr. David Gustafson of the International Life Sciences Institute Research Foundation, this trend may soon change. The combined and uncertain effects of climate change could have a devastating impact on grain yields in the US Midwest, with major global implications for food security. To address these rising threats, Dr. Gustafson and his colleagues propose a new, coordinated network of field research sites at which precise data on the performance of current and future crops, cropping systems, and farm-level management practices in the US Midwest could be gathered. Dr. Gustafson joins us to describe the plan.
Contact with Nature May Mean More Social Cohesion, Less Crime
Numerous studies have demonstrated the benefits of contact with nature for human well-being. However, despite strong trends toward greater urbanization and declining green space, little is known about the social consequences of such contact. Netta Weinstein, senior lecturer at Cardiff University, and her team used a nationally representative UK study to examine the relationships between social cohesion and exposure to nature. The interrelationships were complex, but the results indicate that, even when controlling for numerous possible confounds, nature exposure may account for meaningful amounts of variance in crime and perceived community well-being.
A Successful Intervention Boosts the Gender Diversity of STEM Faculty
Eighty-one percent of US science, technology, engineering, and math (STEM) university faculty members are men. The relative dearth of women in the field is a long-recognized problem--but it's one that may be on its way to a solution. Using a three-step intervention derived from self-determination theory, an interdisciplinary team from Montana State University demonstrated a low-cost way to improve gender diversity in STEM-faculty hiring. The results were impressive, with search committees in the intervention group 6.3 times more likely to make an offer to a woman candidate. Dr. Alexander Zale was part of the team, and he joins us on this episode of BioScience
When Tree Planting Hurts Ecosystems
Forest restoration" is a common conservation theme, often promoted as a means of repairing degraded landscapes and boosting carbon storage. But when the planting areas are poorly chosen, these initiatives have the potential to eradicate ancient grasslands, with devastating effects on biodiversity and ecosystem services.
Fire in the Amazon
Dr. Jennifer Balch, of the University of Colorado-Boulder, discusses a long-term experiment in which she and her team deliberately lit fires in the Brazilian Amazon, with the aim of simulating the fires that are often released when people use burning to clear land.
Extracellular Vesicles (EV's) Everywhere
Xandra Breakefield and Mikolaj Zaborowski, two Harvard Medical School researchers working at the forefront of the field share why these (EV's) are one of the biggest stories in biology.
Transgenic Fish on the Loose?
Dr. Robert Devlin and his team seek to evaluate the ecological threats posed by these GMO fish. In this discussion, he outlines the uncertainty inherent in these risk assessments and explains areas of potential future study.
Enjoy more talks
Listen to more episodes from the BioScience
Talks podcast series at http://bioscienceaibs.libsyn.com