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Filter Total Items: 171122

Effects of hard water precipitates on early life stage brook trout

Brook trout (Salvelinus fontinalis) have been extirpated from many karst-geology streams in West Virginia; however, the causes are not fully understood. Specifically, the impact of calcareous precipitate (marl), which is common in hard-water environments, has not been evaluated as an impediment to juvenile survival. Accordingly, two lab-based studies were conducted to determine if brook trout egg
Authors
John Davidson, Brandon J. Keplinger, Clayton D Raines, Curtis Crouse, CHristopher Goodchild

Beyond simple trend tests: Detecting significant changes in design-flood quantiles

Changes in annual maximum flood (AMF), which are usually detected using simple trend tests (e.g., Mann-Kendall test (MKT)), are expected to change design-flood estimates. We propose an alternate framework to detect significant changes in design-flood between two periods and evaluate it for synthetically generated AMF from the Log-Pearson Type-3 (LP3) distribution due to changes in moments associat
Authors
Chandramauli Awasthi, Stacey A. Archfield, Brian J. Reich, Arumugam Sankarasubramanian

White perch health relative to urbanization and habitat degradation in Chesapeake Bay tributaries. I. Biliary neoplasms and hepatic lesions

White perch Morone americana (Gmelin, 1789) from the Chesapeake Bay (USA) watershed have a high incidence of liver disease, including neoplasms of bile duct origin. Fish collected seasonally from spring 2019 to winter 2020 from the urban Severn River and the more rural Choptank River were evaluated for hepatic lesions. Biliary hyperplasia (64.1%), neoplasms (cholangioma and cholangiocarcinoma, 27%
Authors
Vicki S. Blazer, Mark A Matsche, Erin L. Pulster

Evolution of a minimal cell

Possessing only essential genes, a minimal cell can reveal mechanisms and processes that are critical for the persistence and stability of life1,2. Here we report on how an engineered minimal cell3,4 contends with the forces of evolution compared with the Mycoplasma mycoides non-minimal cell from which it was synthetically derived. Mutation rates were the highest among all reported bacteria, but w
Authors
Roy Z. Moger-Reischer, John I. Glass, Kim S. Wise, Lijie Sun, Daniela M.C. Bittencourt, Brent K. Lehmkuhl, Donald Schoolmaster, Michael Lynch, Jay T. Lennon

SARS-CoV-2 utilization of ACE2 from different bat species allows for virus entry and replication in vitro

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is believed to have a zoonotic origin with bats suspected as a natural host. In this work, we individually express the ACE2 of seven bat species including, little brown, great roundleaf, Pearson's horseshoe, greater horseshoe, Brazilian free-tailed, Egyptian rousette, and Chinese rufous horseshoe in DF1 cells and determine their ability
Authors
Kelsey Briggs, Ryan Sweeney, David S. Blehert, Erica Spackman, David L. Suarez, Darrel Kapczynski

Identifying invertebrate indicators for streamflow duration assessments in forested headwater streams

Streamflow-duration assessment methods (SDAMs) are rapid, indicator-based tools for classifying streamflow duration (e.g., intermittent vs perennial flow) at the reach scale. Indicators are easily assessed stream properties used as surrogates of flow duration, which is too resource intensive to measure directly for many reaches. Invertebrates are commonly used as SDAM indicators because many are n
Authors
Ken M. Fritz, Roxolana O. Kashuba, Gregory J. Pond, Jay R. Christensen, Laurie C. Alexander, Benjamin J. Washington, Brent R. Johnson, David Walters, William T. Thoeny, Paul C. Weaver

Estimating proximity effects to wildfire fuels treatments on house prices in Cibola National Forest, New Mexico, USA

Forested landscapes in the Western United States are subject to growing size and severity of wildfires, in part due to historical management strategies focusing on wildfire suppression. Forest restoration treatments and fuels reductions, including thinning and prescribed burning, can reduce the frequency and intensity of wildfires. Extensive restoration and fuels treatment efforts are underway acr
Authors
Ryan A. Fitch, Julie M. Mueller, James Meldrum, Christopher Huber

Global assessment of marine plastic exposure for oceanic birds

Plastic pollution is distributed patchily around the world’s oceans. Likewise, marine organisms that are vulnerable to plastic ingestion or entanglement have uneven distributions. Understanding where wildlife encounters plastic is crucial for targeting research and mitigation. Oceanic seabirds, particularly petrels, frequently ingest plastic, are highly threatened, and cover vast distances during
Authors
Bethany L. Clark, Ana P. B. Carneiro, Elizabeth J. Pearmin, Marie-Morgane Rouyer, Thomas A Clay, Win Cowger, Richard A. Phillips, Andrea Manica, Carolina Hazin, Marcus Eriksen, Jacob González-Solís, Josh Adams, Yuri V. Albores-Barajas, Joanna Alfaro-Shigueto, Maria Saldhanha Alho, Deusa Teixeira Araujo, José Manuel Arcos, John P. Y. Arnould, Nadito J. P. Barbosa, Christophe Barbraud, Annalea M. Beard, Jessie Beck, Elizabeth Bell, Della G. Bennet, Maud Berlincourt, Manuel Biscoito, Oskar K. Bjørnstad, Mark Bolton, Katherine A. Booth Jones, John J. Borg, Karen Bourgeois, Vincent Bretagnolle, Joël Bried, James V. Briskie, M. de L. Brooke, Katherine C. Brownlie, Leandro Bugoni, Licia Calabrese, Letizia Campioni, Mark J. Carey, Ryan D. Carle, Nicholas Carlile, Ana R. Carreiro, Paulo Catry, Teresa Catry, Jacopo G. Cecere, Filipe R. Ceia, Yves Cherel, Chang-Yong Choi, Marco Cianchetti-Benedetti, Rohan H. Clarke, Jaimie Cleeland, Valentina Colodro, Bradley C. Congdon, Jóhannis Danielsen, Federico De Pascalis, Zoe Deakin, Nina Dehnhard, Giacomo Dell’Omo, Karine Delord, Sébastien Descamps, Ben J. Dilley, Herculano A. Dinis, Jerome Dubos, Brendon J. Dunphy, Louise M. Emmerson, Ana Isabel Fagundes, Annette L. Fayet, Jonathan J. Felis, Johannes H. Fischer, Amanda Freeman, Aymeric Fromant, Giorgia Gaibani, David García, Carina Gjerdrum, Ivandra Soeli Gonçalves Correia Gomes, Manuela G. Forero, José Pedro Granadeiro, W. James Grecian, David Grémillet, Tim Guilford, Gunnar Thor Hallgrimsson, Luke R. Halpin, Erpur Snær Hansen, April Hedd, Morten Helberg, Halfdan H. Helgason, Leeann M. Henry, Hannah F. R. Hereward, Marcos Hernandez-Montero, Mark A. Hindell, Peter J. Hodum, Simona Imperio, Audrey Jaeger, Mark Jessopp, Patrick Jodice, Carl G. Jones, Christopher W. Jones, Jón Einar Jónsson, Adam Kane, Sven Kapelj, Yuna Kim, Holly Kirk, Yann Kolbeinsson, Philipp L. Kraemer, Lucas Krüger, Paulo Lago, Todd J. Landers, Jennifer L. Lavers, Matthieu Le Corre, Andreia Leal, Maite Louzao, Jeremy Madeiros, Maria Magalhães, Mark L. Mallory, Juan F. Masello, Bruno Massa, Sakiko Matsumoto, Fiona McDuie, Laura McFarlane Tranquilla, Fernando Medrano, Benjamin J. Metzger, Teresa Militão, William A. Montevecchi, Rosalinda C. Montone, Leia Navarro-Herrero, Verónica C. Neves, David G. Nicholls, Malcolm A. C. Nicoll, Ken Norris, Steffen Oppel, Daniel Oro, Ellie Owen, Oliver Padget, Vítor H. Paiva, David Pala, Jorge M. Pereira, Clara Péron, Maria V. Petry, Admilton de Pina, Ariete T. Moreira Pina, Patrick Pinet, Pierre A. Pistorius, Ingrid L. Pollet, Benjamin J. Porter, Timothée A. Poupart, Christopher D. L. Powell, Carolina B. Proaño, Júlia Pujol-Casado, Petra Quillfeldt, John L. Quinn, Andre F. Raine, Helen Raine, Iván Ramírez, Jaime A. Ramos, Raül Ramos, Andreas Ravache, Matt J. Rayner, Timothy A. Reid, Gregory J. Robertson, Gerard J. Rocamora, Dominic P. Rollinson, Robert A. Ronconi, Andreu Rotger, Diego Rubolini, Kevin Ruhomaun, Asunción Ruiz, James C. Russell, Peter G. Ryan, Sarah Saldanha, Ana Sanz-Aguilar, Mariona Sardà-Serra, Yvan G. Satgé, Katsufumi Sato, Wiebke C. Schäfer, Stefan Schoombie, Scott A. Shaffer, Nirmal Jivan Shah, Akiko Shoji, Dave Shutler, Ingvar A. Sigurðsson, Mónica C. Silva, Alison E. Small, Cecilia Soldatini, Hallvard Strøm, Christopher A. Surman, Akinori Takahashi, Vikash R. V. Tatayah, Graeme A. Taylor, Robert J. Thomas, David R. Thompson, Paul M. Thompson, Thorkell L. Thórarinsson, Diego Vicente-Sastre, Eric Vidal, Ewan D. Wakefield, Susan M. Waugh, Henri Weimerskirch, Heiko U. Wittmer, Takashi Yamamoto, Ken Yoda, Carlos B. Zavalaga, Francis J. Zino, Maria P. Dias

Seasonal habitat utilization provides evidence for site fidelity during both spawn and non-spawning seasons in Lake Ontario cisco Coregonus artedi

The Lake Ontario cisco Coregonus artedi population declined in the 20th century, and restoration of this species is a management objective. Management tools to restore cisco are limited because little is known about cisco spawning behavior and habitat use. We tagged 76 cisco from a remnant population in Chaumont Bay, Lake Ontario with acoustic transmitters and characterized seasonal habitat use fr
Authors
Alexander J. Gatch, Dimitry Gorsky, Brian C. Weidel, Zy F. Biesinger, Michael J. Connerton, Cameron Davis, Hannah Lachance, Brian O'Malley

Structure of breeding calls in three closely related bird species (Calidris Merrem, 1804; Scolopacidae)

We studied calls of three sandpiper species to document species’ similarities and differences. We hypothesized that functionally different calls would differ in degree of divergence. We studied two nuptial calls (complex “Song” and rhythmically repeated aerial call, RRC) of males, and a general-purpose call (“alarm” trill, AT) given by parents of both sexes in the presence of humans and other pote
Authors
Edward H. Miller, Pavel S. Tomkovich, Vladimir Yu. Arkhipov, Colleen M. Handel

The scale-dependent role of submerged macrophytes as drift-feeding lotic fish habitat

Although submerged macrophyte (hereafter, “macrophyte”) communities are globally prevalent in low-gradient rivers, the net reach-scale effect of macrophytes on drift-feeding fish microhabitat preference is poorly understood. We used snorkeling and bioenergetics to study fish habitat selection for rainbow trout (Oncorhynchus mykiss) in the Henrys Fork, ID, USA, investigating microhabitat preference
Authors
John S. McLaren, Robert W. Van Kirk, Phaedra E. Budy, Soren Brothers

Riparian vegetation response amid variable climate conditions across the Upper Gila River watershed: Informing Tribal restoration priorities

Riparian systems across the Southwest United States are extremely valuable for the human and ecological communities that engage with them. However, they have experienced substantial changes and stresses over the past century, including non-native vegetation expansion, vegetation die-offs, and increased fire activity. Vegetation management approaches, such as ecological restoration, may address som
Authors
Roy Petrakis, Laura M. Norman, Barry R. Middleton