Publications
This list of publications includes peer-review journal articles, official USGS publications series, reports and more authored by scientists in the Ecosystems Mission Area. A database of all USGS publications, with advanced search features, can be accessed at the USGS Publications Warehouse.
Filter Total Items: 42853
Otters, marine Otters, marine
No abstract available.
Authors
M. Tim Tinker, James L. Bodkin, M. Ben-Davic, J. A. Estes
Complete sequences of 4 viral hemorrhagic septicemia virus IVb isolates and their virulence in northern pike fry Complete sequences of 4 viral hemorrhagic septicemia virus IVb isolates and their virulence in northern pike fry
Four viral hemorrhagic septicemia virus (VHSV) genotype IVb isolates were sequenced, their genetic variation explored, and comparative virulence assayed with experimental infections of northern pike Esox lucius fry. In addition to the type strain MI03, the complete 11183 bp genome of the first round goby Neogobius melanostomus isolate from the St. Lawrence River, and the 2013 and 2014...
Authors
Rodman G. Getchell, Emily R. Cornwell, Steven Bogdanowicz, Jose Andres, William N. Batts, Gael Kurath, Rachel Breyta, Joanna G. Choi, John M. Farrell, Paul R. Bowser
Inference of timber harvest effects on survival of stream amphibians is complicated by movement Inference of timber harvest effects on survival of stream amphibians is complicated by movement
The effects of contemporary logging practices on headwater stream amphibians have received considerable study but with conflicting or ambiguous results. We posit that focusing inference on demographic rates of aquatic life stages may help refine understanding, as aquatic and terrestrial impacts may differ considerably. We investigated in-stream survival and movement of two stream...
Authors
Nathan Chelgren, M. J. Adams
Environment and science Environment and science
Alaska is part of an international circumpolar North, which makes the United States an Arctic nation. Alaska is a place of Indigenous ingenuity and adaptation, a place where environmental extremes challenge the ways of living. In its more recent history, Alaska has been a place of resources and influx-a land known best for what it provides. This frontier persona, with its sourdoughs and
Authors
John M. Pearce, Sandra L. Talbot
Distribution and status of five non-native fish species in the Tampa Bay drainage (USA), a hot spot for fish introductions Distribution and status of five non-native fish species in the Tampa Bay drainage (USA), a hot spot for fish introductions
The Tampa Bay region of Florida (USA) is a hot spot for non-native freshwater fishes. However, published information on most non-native fishes in the basin is not current. Systematic sampling efforts targeting non-native fishes in the region were conducted from 2013–2015 by the University of Florida Tropical Aquaculture Laboratory. Data from these recent surveys were analyzed, along with...
Authors
Katelyn M. Lawson, Quenton M. Tuckett, Jared L. Ritch, Leo Nico, Pam Fuller, Richard E. Matheson, Jeffrey E. Hill
Osmoregulation and muscle water control in vitro facing salinity stress of the Amazon fish Oscar Astronotus ocellatus (Cichlidae) Osmoregulation and muscle water control in vitro facing salinity stress of the Amazon fish Oscar Astronotus ocellatus (Cichlidae)
Specimens of Oscar Astronotus ocellatus from a fish farm were abruptly submitted to salt stress of 14 ppt and 20 ppt, for 3 and 8 h to determine their plasma osmolality. Muscle wet body mass change in vitro was analyzed from control freshwater animals. Fish in 14 ppt presented no osmolality distress even after 8 h. In 20 ppt, a slight increase (10%) in plasma osmolality was observed for...
Authors
Silvia M. M. Gutierre, Jessica M. Schulte, Pamela J. Schofield, Viviane Prodocimo
Candoia Bibroni (Pacific Boa). Diet Candoia Bibroni (Pacific Boa). Diet
No abstract available.
Authors
Adam G. Clause, Mark J. Fraser, Sarah Pene, Nunia Thomas-Moko, Robert N. Fisher
High altitude flights by ruddy shelduck Tadorna ferruginea during trans-Himalayan migrations High altitude flights by ruddy shelduck Tadorna ferruginea during trans-Himalayan migrations
Birds that migrate across high altitude mountain ranges are faced with the challenge of maintaining vigorous exercise in environments with limited oxygen. Ruddy shelducks are known to use wintering grounds south of the Tibetan Plateau at sea level and breeding grounds north of Himalayan mountain range. Therefore, it is likely these shelducks are preforming high altitude migrations. In...
Authors
N. Parr, S. Bearhop, David C. Douglas, J.Y. Takekawa, Diann J. Prosser, S.H. Newman, W.M. Perry, S. Balachandran, M.J. Witt, Y. Hou, Z. Lu, L.A. Hawkes
Methodological considerations regarding online extraction of water from soils for stable isotope determination Methodological considerations regarding online extraction of water from soils for stable isotope determination
No abstract available.
Authors
Brynne E. Lazarus, Matthew J. Germino
Crotalus oreganus lutosus (Great Basin Rattlesnake). Defensive behavior/head hiding and tongue display Crotalus oreganus lutosus (Great Basin Rattlesnake). Defensive behavior/head hiding and tongue display
A variety of snake species employ head hiding as defensive behavior (Greene 1973. J. Herpetol. 7:143–161), but such behavior seems to be rarely observed in rattlesnakes. A recent report (Medica 2009. Herpetol. Rev. 40:95–97) presented observations on Crotalus scutulatus scutulatus and cited cases of similar behavior involving C. atrox, C. ruber, and C. viridis viridis. Here we report an...
Authors
Alexander K. Johnson, Phil A. Medica
Demographic and temporal variations in immunity and condition of polar bears (Ursus maritimus) from the southern Beaufort Sea Demographic and temporal variations in immunity and condition of polar bears (Ursus maritimus) from the southern Beaufort Sea
Assessing the health and condition of animals in their natural environment can be problematic. Many physiological metrics, including immunity, are highly influenced by specific context and recent events to which researchers may be unaware. Thus, using a multifaceted physiological approach and a context-specific analysis encompassing multiple time scales can be highly informative...
Authors
Lorin Neuman-Lee, Patricia Terletzky, Todd C. Atwood, Eric Gese, Geoffrey Smith, Sydney Greenfield, John Pettit, Susannah French
Temporal complexity of southern Beaufort Sea polar bear diets during a period of increasing land use Temporal complexity of southern Beaufort Sea polar bear diets during a period of increasing land use
From 2000 to 2013, use of land as a seasonal habitat by polar bears (Ursus maritimus) of the southern Beaufort Sea (SB) subpopulation substantially increased. This onshore use has been linked to reduced spatial and temporal availability of sea ice, as well as to the availability of subsistence‐harvested bowhead whale (Balaena mysticetus) bone piles. Here, we evaluated the role of climate
Authors
Melissa A. McKinney, Todd C. Atwood, Sara J. Iverson, Elizabeth L. Peacock