Eradication of two non-native cichlid fishes in Miami, Florida (USA)
Pamela J. Schofield, Howard L. Jelks, Kelly B. Gestring
2019, Management of Biological Invasions (10) 296-310
The proliferation of non-native fishes in Florida is a serious problem, and new species continue to be introduced to the state. Fishes in the Family Cichlidae have been especially successful colonizers of south Florida freshwater habitats. Herein we report a multi-agency effort to eradicate two non-native cichlid fishes in Miami,...
A comparison of chlorophyll a values obtained from an autonomous underwater vehicle to satellite-based measures for Lake Michigan
David Bennion, David Warner, Peter C. Esselman, Brett Hobson, Brian Kieft
2019, Journal of Great Lakes Research (45) 726-734
Accurate methods to track changes in lake productivity through time and space are critical to fisheries management. Chlorophyll a is the most widely studied proxy for ecosystem primary production, and has been the topic of many studies. The main sources of chlorophyll a measurements are ship-based measures or multi-spectral satellite...
Variation in Bluegill catch rates and total length distributions among four sampling gears used in two Wisconsin lakes dominated by small Ffsh
Christopher J. Sullivan, Holly S. Embke, K. Martin Perales, Stephen R. Carpenter, M. Jake Vander Zanden, Daniel A. Isermann
2019, North American Journal of Fisheries Management (39) 714-724
Many Bluegill Lepomis macrochirus populations are dominated by fish ≤125 mm total length (TL) that may be underrepresented when using standard sampling gears. To identify efficient sampling methods for these populations, we compared catch per unit effort (CPUE) and TL frequency distributions of Bluegill captured in cloverleaf traps, boat electrofishing,...
A field evaluation of the growth and survival of age-0 Oncorhynchus mykiss tagged with 8-mm passive integrated transponder (PIT) tags
Kenneth Tiffan, Ian Jezorek, Russell Perry
2019, Animal Biotelemetry (7)
BackgroundIn fish tagging studies, tag size limits the size of fish that can be tagged, the fraction of a population that can be represented, and ultimately inferences that can be made about the study population, particularly when juvenile fish are the subject of interest. Introduction of an...
State of knowledge on current exposure, fate and potential health effects of contaminants in polar bears from the circumpolar Arctic
Heli Routti, Todd C. Atwood, Thea Bechshoft, Andrei N. Boltunov, Tomasz M. Ciesielski, Jean-Pierre Desforges, Rune Dietz, Geir W. Gabrielsen, Bjorn Munro Jenssen, Robert J. Letcher, Melissa A. McKinney, A. Morris, F. Riget, Christian Sonne, Bjarne Styrishave, Sabrina Tartu
2019, Science of Total Environment (664) 1063-1083
The polar bear (Ursus maritimus) is among the Arctic species exposed to the highest concentrations of long-range transported bioaccumulative contaminants, such as halogenated organic compounds and mercury. Contaminant exposure is considered to be one of the largest threats to polar bears after the loss...
Genetic variation among island and continental populations of Burrowing Owl (Athene cunicularia) subspecies in North America
Alberto Macias-Duarte, Courtney J. Conway, Geoffrey L. Holroyd, Hector E. Valdez-Gomez, Melanie Culver
2019, Journal of Raptor Research (53) 127-133
Burrowing Owls (Athene cunicularia) have a large geographic range spanning both North and South America and resident populations occur on many islands in the eastern Pacific Ocean and the Caribbean Sea. Many owl populations are isolated and disjunct from other populations, but studies on genetic variation within and among populations...
Aluminum- and iron-based coagulation for in-situ removal of dissolved organic carbon, disinfection byproducts, mercury and other constituents from agricultural drain water
Sandra M. Bachand, Tamara E. C. Kraus, Dylan Stern, Yan Ling Liang, William R. Horwath, Philip A. M. Bachand
2019, Ecological Engineering (134) 26-38
Agricultural production on wetland soils can be significant sources of dissolved organic carbon (DOC), disinfection byproduct precursors, mercury and nutrients to downstream water bodies and accelerate land subsidence. Presented as a potential solution for in-situ water quality improvement and land subsidence mitigation, chemically enhanced treatment wetlands (CETWs) were used to...
oSCR: A spatial capture–recapture R package for inference about spatial ecological processes
Chris Sutherland, J. Andrew Royle, Dan Linden
2019, Ecography (42) 1459-1469
Spatial capture–recapture (SCR) methods have become widely applied in ecology. The immediate adoption of SCR is due to the fact that it resolves some major criticisms of traditional capture–recapture methods related to heterogeneity in detectabililty, and the emergence of new technologies (e.g. camera traps, non‐invasive genetics) that have vastly improved...
Connections between Eocene Lakes Uinta and Gosiute with emphasis on the infilling stage of Lake Uinta in Piceance Basin
Ronald C. Johnson, Justin E. Birdwell, Michael E. Brownfield, Tracey J. Mercier, Paula L. Hansley
2019, Mountain Geologist (56) 143-183
Late in its history, Eocene saline Lake Gosiute in the Greater Green River Basin, Wyoming and Colorado was progressively filled from north to south with coarse volcaniclastic sediments. During the infilling, Lake Gosiute began to drain southward across the Axial arch into saline Lake Uinta in the Piceance and Uinta...
Distribution of mineral phases in the Eocene Green River Formation, Piceance Basin, Colorado – Implications for the evolution of Lake Uinta
Justin E. Birdwell, Ronald C. Johnson, Michael E. Brownfield
2019, Mountain Geologist (56) 73-141
The mineralogy of the Eocene Green River Formation in the Piceance Basin, Colorado, has been the subject of numerous studies since the 1920s. Most previous work has focused on the resource potential of these lacustrine mudrocks, which in addition to substantial oil shale potential (in-place resources of 353 billion barrels...
Spatial integration of biological and social objectives to identify priority landscapes for waterfowl habitat conservation
Anastasia Krainyk, James E. Lyons, Michael G. Brasher, Dale D. Humburg, Greg J. Souilliere, John M. Coluccy, Mark J. Petrie, David W. Howerter, Stuart M. Slattery, Mindy B. Rice, Joe C. Fuller
2019, Open-File Report 2019-1029
Waterfowl population management and habitat conservation compose one of the oldest and most successful adaptive management frameworks in the world. Since its inception, the North American Waterfowl Management Plan (NAWMP) has emphasized strategically targeted conservation investments in regions that most affect waterfowl population dynamics. By 2012, regional conservation had progressively...
Rapid station and network quality analysis for temporary deployments
David C. Wilson, Adam T. Ringler, Tyler Storm, Robert E. Anthony
2019, Seismological Research Letters (90) 1494-1501
Seismic station data quality is commonly defined by metrics such as data completeness or background seismic noise levels in specific frequency bands. However, for temporary networks such as aftershock deployments or induced seismicity monitoring, the most critical metric is often how well the station performs when recording events of...
When volcanoes fall down—Catastrophic collapse and debris avalanches
Lee Siebert, Mark E. Reid, James W. Vallance, Thomas C. Pierson
2019, Fact Sheet 2019-3023
Despite their seeming permanence, volcanoes are prone to catastrophic collapse that can affect vast areas in a matter of minutes. Large collapses begin as gigantic landslides that quickly transform to debris avalanches—chaotically tumbling masses of rock debris that can sweep downslope at extremely high velocities, inundating areas far beyond the...
Monitoring long-term changes in forage fish distribution, abundance and body condition
Mayumi L. Arimitsu, John F. Piatt
2019, Report
We collected data on forage fish abundance, distribution and body condition in Prince William Sound, Alaska during summers in 2012 through 2016. This included acoustic – trawl surveys, aerial-acoustic surveys, opportunistic sampling where we encountered forage aggregations, and concurrent measurements of forage fish habitat. Acoustic indices of density suggest low...
2018 USA National Phenology Annual Report
Jake Weltzin, Theresa M. Crimmins
2019, Report
This report provides a very high-level summary of some of the USA-NPN’s accomplishments over the past year. The purpose is to share with USA-NPN funders, partners, and the general public the value of the organization....
Control of invasive sea lampreys using the piscicides TFM and niclosamide: Toxicology, successes & future prospects
Michael Wilkie, Terrance Hubert, Michael A. Boogaard, Oana Birceanu
2019, Aquatic Toxicology (211) 235-252
The invasion of the Laurentian Great Lakes of North America by sea lampreys (Petromyzon marinus) in the early 20th century contributed to the depletion of commercial, recreational and culturally important fish populations, devastating the economies of communities that relied on the fishery. Sea lamprey populations were subsequently controlled using an...
Temperature mediates secondary dormancy in resting cysts of Pyrodinium bahamense (Dinophyceae)
Cary B. Lopez, Aliza Karim, Susan Murasko, Marci E. Marot, Christopher G. Smith, Alina A. Corcoran
2019, Journal of Phycology (55) 924-955
High‐biomass blooms of the toxic dinoflagellate Pyrodinium bahamense occur most summers in Tampa Bay, Florida, USA, posing a recurring threat to ecosystem health. Like many dinoflagellates, P. bahamense forms immobile resting cysts that can be deposited on the seafloor—creating a seed bank that can retain the organism within the ecosystem...
Hydrologic modifications challenge bottomland hardwood forest management
Sammy L. King, R.F. Keim
2019, Journal of Forestry (117) 504-514
Bottomland hardwoods are floodplain forests along rivers and streams throughout the southeastern United States. The interrelations among hydrology, soils, geomorphic landforms, and tree species composition are the foundation of forest management in bottomland hardwoods, and historically their correspondence has allowed for somewhat predictable forest responses based upon the hydrogeomorphic...
An integrated framework for ecological drought across riverscapes of North America
Ryan Kovach, Jason B. Dunham, Robert Al-Chokhachy, Craig Snyder, Erik A. Beever, Gregory T. Pederson, Abigail Lynch, Nathaniel P. Hitt, Christopher P. Konrad, Kristin Jaeger, Alan H. Rea, Adam J. Sepulveda, Patrick M. Lambert, Jason M. Stoker, J. Joseph Giersch, Clint C. Muhlfeld
2019, BioScience (69) 418-431
Climate change is increasing the severity and extent of extreme droughts events, posing a critical threat to freshwater ecosystems, particularly with increasing human demands for diminishing water supplies. Despite the importance of drought as a significant driver of ecological and evolutionary dynamics, current understanding of drought consequences for freshwater...
Bryophyte abundance, composition and importance to woody plant recruitment in natural and restoration forests
Evan M Rehm, Miles K Thomas, Stephanie G. Yelenik, Dave L Bouck, Carla M. D’Antonio
2019, Forest Ecology and Management (444) 405-413
Restoration of tropical forests can lead to enhanced ecosystem services and increases in native biodiversity. Bryophytes may be an integral part of the forest restoration process and can serve a critical role in forest functioning. However, the recovery of bryophytes and their ability to facilitate woody plant establishment during restoration...
Basin, climatic, and irrigation factors associated with median summer water yields for streams in Southwestern Michigan, 1945-2015
David J. Holtschlag
2019, Scientific Investigations Report 2018-5071
Median summer water yields and resultant flows for streams are used in Michigan to regulate large water withdrawals to help prevent negative effects on characteristic fish populations. Large water withdrawals commonly are associated with irrigation in rural areas. In an earlier statewide report, an index-flow statistic for the period of...
Fault initiation in serpentinite
Benjamin L. Melosh
2019, Geochemistry, Geophysics, Geosystems (20) 2626-2646
Serpentinite fault rheology is fundamental to tectonic and earthquake processes, yet links between deformation textures and strength evolution during fault initiation are poorly constrained. Here I present field and petrographic microstructural observations of unsheared and sheared serpentinite that demonstrate a progression of fault development. I compliment observations with a clast...
Geology of the Cornwall Quadrangle, Virginia
Matthew J. Heller, Mark W. Carter, G.P. Wilkes, R.L. Coiner
2019, Report
No abstract available. ...
Resurgence of cisco (Coregonus artedi) population levels in Lake Michigan
Randall M. Claramunt, Jason Smith, Kevin Donner, Annalise Povolo, Matthew E. Herbert, Tracy Galarowicz, Tracy L. Claramunt, Scott DeBoe, Wendylee Stott, Jory L. Jonas
2019, Journal of Great Lakes Research (45) 821-829
In recent decades, many factors that were linked with the decline of Great Lakes cisco (Coregonus artedi) populations have subsided. The goal of this study was to investigate where cisco exist in Lake Michigan and evaluate evidence for recovery including when, where, and to what extent it is occurring. We...
Global patterns of tree stem growth and stand aboveground wood production in mangrove forests
Yanmei Xiong, Roxelane Cakir, Sang Minh Phan, Anne Ola, Ken Krauss, Catherine E. Lovelock
2019, Forest Ecology and Management (444) 382-392
Mangrove forests provide important ecological and economic services including carbon sequestration and storage. The conservation and restoration of mangroves are expected to play an important role in mitigating climate change, and understanding the factors influencing mangrove stem growth and wood production are important in predicting and improving mangrove carbon sequestration...
