Western Ecological Research Center

Publications

Below is a list of WERC's peer-reviewed publications. If you are searching for a specific publication and cannot find it in this list, please contact werc_web@usgs.gov

Filter Total Items: 3,079
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Year Published: 2019

Topographic drivers of flight altitude over large spatial and temporal scales

Bird movements vary spatially and temporally, but the primary drivers that explain such variation can be difficult to identify. For example, it is well known that the availability of updraft influences soaring flight and that topography interacts with weather to produce these updrafts. However, the influences of topography on flight are not well...

Duerr, Adam E.; Miller, Tricia A.; Dunn, Leah; Bell, Douglas A.; Bloom, Peter H.; Fisher, Robert N.; Tracey, Jeff A.; Katzner, Todd E.
Duerr, A.E., Miller, T.A., Dunn, L., Bell, D.A., Bloom, P.H., Fisher, R.N., Tracey, J.A., Katzner, T.E., 2019, Topographic drivers of flight altitude over large spatial and temporal scales: The Auk: Ornithological Advances, p. online, https://doi.org/10.1093/auk/ukz002.

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Year Published: 2019

Which trees die during drought? The key role of insect host-tree selection

1. During drought, the tree subpopulations (such as size or vigor classes) that suffer disproportionate mortality can be conceptually arrayed along a continuum defined by the actions of biotic agents, particularly insects. At one extreme, stress dominates: insects are absent or simply kill the most physiologically stressed trees. At the...

Stephenson, Nathan L.; Das, Adrian J.; Ampersee, Nicholas J.; Bulaon, Beverly M; Yee, Julie L.

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Year Published: 2019

Changes in breeding population sizes of double-crested Cormorants Phalacrocorax auritus in the Humboldt Bay area, California, 1924–2017

To better understand recent population growth of the Double-crested Cormorant Phalacrocorax auritus along the Pacific coast of North America, we assessed long-term breeding population trends in the Humboldt Bay area, California, using aerial photographic survey data collected since 1989 as well as available prior data. The earliest...

Capitolo, Phillip J.; Carter, Harry R; Yee, Julie L.; McChesney, Gerard J.; Parker, Michael W; Young, Richard J; Golightly, Richard T.; Tyler, W Breck

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Year Published: 2019

Mercury concentrations vary within and among individual bird feathers: A critical evaluation and guidelines for feather use in mercury monitoring programs

Feathers are widely used to represent mercury contamination in birds. Yet, few recommendations exist that provide guidance for using bird feathers in mercury monitoring programs. We conducted a literature review and 5 experiments to show that mercury concentrations vary substantially within (vane >100% higher than calamus) and among (>1000...

Peterson, Sarah H.; Ackerman, Joshua T.; Toney, Matthew; Herzog, Mark P.

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Year Published: 2019

Mercury exposure and altered parental nesting behavior in a wild songbird

Methylmercury is a neurotoxin and endocrine disruptor and may impair avian reproduction directly through embryotoxicity or by altering parental care behaviors. We studied mercury exposure and incubation behavior of free-living tree swallows (Tachycineta bicolor) nesting in artificial nest boxes. Using small temperature dataloggers, we measured...

Hartman, C. Alex; Ackerman, Joshua T.; Herzog, Mark P.

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Year Published: 2019

Parasitic copepods (Crustacea, Hexanauplia) on fishes from the lagoon flats of Palmyra Atoll, Central Pacific

We surveyed copepods parasitic on the fishes at Palmyra, a remote atoll in the Central Indo-Pacific faunal region. In total, we collected 849 individual fish, representing 44 species, from the intertidal lagoon flats at Palmyra and recovered 17 parasitic copepod species. The parasitic copepods were: Orbitacolax williamsi on Mulloidichthys...

Soler-Jiménez, Lilia Catherinne; Morales-Serna, F. Neptali; Aguirre-Macedo, Ma. Leopoldina; McLaughlin, John P.; Jaramillo, Alejandra G.; Shaw, Jenny C.; James, Anna K; Hechinger, Ryan F.; Kuris, Armand M.; Lafferty, Kevin D.; Vidal-Martinez, Victor M.

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Year Published: 2019

Globally important islands where eradicating invasive mammals will benefit highly threatened vertebrates

Invasive alien species are a major threat to native insular species. Eradicating invasive mammals from islands is a feasible and proven approach to prevent biodiversity loss. We developed a conceptual framework to identify globally important islands for invasive mammal eradications to prevent imminent extinctions among highly threatened species...

Holmes, Nick D.; Spatz, Dena R.; Oppel, Steffen; Tershy, Bernie; Croll, Donald; Keitt, Brad; Genovesi, Piero; Burfield, Ian; Will, David J.; Bond, Alexander L.; Wegmann, Alex; Aguirre-Munoz, Alfonso; Raine, Andre F.; Knapp, Charles R.; Hung, Chung-Hang; Wingate, David; Hagen, Erin; Mendez-Sanchez, Federico; Rocamora, Gerard; Yuan, Hsiao-Wei; Fric, Jakob; Millett, James; Russell, James M.; Liske-Clark, Jill; Vidal, Eric; Jourdan, Herve; Campbell, Karl; Springer, Keith; Swinnerton, Kristy; Gibbons-Decherong, Lolita; Langrand, Olivier; de L. Brooke, M.; McMinn, Miguel; Bunbury, Nancy; Oliveira, Nuno; Sposimo, Paolo; Geraldes, Pedro; McClelland, Pete; Hodum, Peter; Ryan, Peter G.; Borroto-Paez, Rafael; Pierce, Ray J.; Griffiths, Richard; Fisher, Robert N.; Wanless, Ross M.; Pasachnik, Stesha A.; Cranwell, Steve; Micol, Thierry; Butchart, Stuart H. M.
Holmes ND, Spatz DR, Oppel S, Tershy B, Croll DA, Keitt B, et al. (2019) Globally important islands where eradicating invasive mammals will benefit highly threatened vertebrates. PLoS ONE 14(3): e0212128. https://doi.org/10.1371/journal.pone.0212128

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Year Published: 2019

Distribution and abundance of Least Bell’s Vireos (Vireo bellii pusillus) and Southwestern Willow Flycatchers (Empidonax traillii extimus) on the Middle San Luis Rey River, San Diego County, Southern California—2018 data summary

We surveyed for Least Bell’s Vireos (Vireo bellii pusillus; vireo) and Southwestern Willow Flycatchers (Empidonax traillii extimus; flycatcher) along the San Luis Rey River, between College Boulevard in Oceanside and Interstate 15 in Fallbrook, California (middle San Luis Rey River), in 2018. Surveys were conducted from...

Allen, Lisa D.; Kus, Barbara E.
Allen, L.D., and Kus, B.E., 2019, Distribution and abundance of Least Bell’s Vireos (Vireo bellii pusillus) and Southwestern Willow Flycatchers (Empidonax traillii extimus) on the middle San Luis Rey River, San Diego County, southern California—2018 data summary: U.S. Geological Survey Data Series 1109, 12 p., https://doi.org/10.3133/ds1109.

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Year Published: 2019

Does perspective matter? A case study comparing Eulerian and Lagrangian estimates of common murre (Uria aalge) distributions

Studies estimating species' distributions require information about animal locations in space and time. Location data can be collected using surveys within a predetermined frame of reference (i.e., Eulerian sampling) or from animal‐borne tracking devices (i.e., Lagrangian sampling). Integration of observations obtained from Eulerian and Lagrangian...

Phillips, Elizabeth M.; Horne, John K.; Zamon, Jeannette E.; Felis, Jonathan J.; Adams, Josh
Phillips, EM, Horne, JK, Zamon, JE, Felis, JJ, Adams, J. Does perspective matter? A case study comparing Eulerian and Lagrangian estimates of common murre (Uria aalge) distributions. Ecol Evol. 2019; 9: 4805– 4819. https://doi.org/10.1002/ece3.5083

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Year Published: 2019

A strong colonizer rules the trematode guild in an intertidal snail host

We examined the extent to which supply‐side, niche, and competition theories and concepts help explain a trematode community in which one species comprises 87% of the trematode individuals, and the remaining 15 species each have <3%. We collected and dissected the common and wide‐ranging snail host Heleobia australis over four seasons...

Alda, Pilar; Bonel, Nicolas; Cazzaniga, Nestor J.; Martorelli, Sergio R.; Lafferty, Kevin D.

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Year Published: 2019

Fish culling reduces tapeworm burden in Arctic charr by increasing parasite mortality rather than by reducing density‐dependent transmission

Two common Dibothriocephalus (formerly Diphyllobothrium) tapeworm species were significantly reduced by experimental culling of their fish host Arctic charr (Salvelinus alpinus) in a subarctic lake.Between 1984 and 1991, funnel traps were used to cull ~35 metric tons of Arctic charr, reducing charr density by ~80%. As charr...

Henriksen, Eirik H.; Frainer, Andre; Knudsen, Rune; Kristoffersen, Roar; Kuris, Armand M.; Lafferty, Kevin D.; Amundsen, Per-Arne

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Year Published: 2019

Southern sea otter (Enhydra lutris nereis) population biology at Big Sur and Monterey, California --Investigating the consequences of resource abundance and anthropogenic stressors for sea otter recovery

The range of the southern sea otter (Enhydra lutris nereis) spans most of the central California coast from Half Moon Bay to Gaviota. Some coastal areas within this range are heavily developed and highly impacted by humans, while other areas are wild and largely pristine. Determining the relative importance of food resource abundance,...

Tinker, M. Tim; Tomoleoni, Joseph A.; Weitzman, Benjamin P.; Staedler, Michelle; Jessup, Dave; Murray, Michael J.; Miller, Melissa; Burgess, Tristan; Bowen, Lizabeth; Miles, A. Keith; Thometz, Nicole; Tarjan, Lily; Golson, Emily; Batac, Francesca; Dodd, Erin; Berberich, Eva; Kunz, Jessica; Bentall, Gena; Fujii, Jessica; Nicholson, Teri; Newsome, Seth; Melli, Ann; LaRoche, Nicole; MacCormick, Holly; Johnson, Andy; Henkel, Laird; Kreuder-Johnson, Chris; Conrad, Pat
Tinker, M.T., Tomoleoni, J.A., Weitzman, B.P., Staedler, M., Jessup, D., Murray, M.J., Miller, M., Burgess, T., Bowen, L., Miles, A.K., Thometz, N., Tarjan, L., Golson, E., Batac, F., Dodd, E., Berberich, E., Kunz, J., Bentall, G., Fujii, J., Nicholson, T., Newsome, S., Melli, A., LaRoche, N., MacCormick, H., Johnson, A., Henkel, L., Kreuder-Johnson, C., and Conrad, P., 2019, Southern sea otter (Enhydra lutris nereis) population biology at Big Sur and Monterey, California --Investigating the consequences of resource abundance and anthropogenic stressors for sea otter recovery: U.S. Geological Survey Open-File Report 2019 -1022, 225 p., https://doi.org/10.3133/ofr20191022.