Publications
Filter Total Items: 2077
Sinks for nitrogen inputs in terrestrial ecosystems: a meta-analysis of 15N tracer field studies Sinks for nitrogen inputs in terrestrial ecosystems: a meta-analysis of 15N tracer field studies
Effects of anthropogenic nitrogen (N) deposition and the ability of terrestrial ecosystems to store carbon (C) depend in part on the amount of N retained in the system and its partitioning among plant and soil pools. We conducted a meta-analysis of studies at 48 sites across four continents that used enriched 15N isotope tracers in order to synthesize information about total ecosystem N...
Authors
P.H. Templer, M.C. Mack, F. S. Chapin, L.M. Christenson, J.E. Compton, H.D. Crook, W.S. Currie, C.J. Curtis, D.B. Dail, C. M. D’Antonio, B.A. Emmett, H.E. Epstein, C.L. Goodale, P. Gundersen, S.E. Hobbie, K. Holland, D.U. Hooper, B.A. Hungate, S. Lamontagne, K.J. Nadelhoffer, C.W. Osenberg, S.S. Perakis, P. Schleppi, J. Schimel, I.K. Schmidt, M. Sommerkorn, J. Spoelstra, A. Tietema, W.W. Wessel, D.R. Zak
Variation in migratory behavior influences regional genetic diversity and structure among American kestrel populations (Falco sparverius) in North America Variation in migratory behavior influences regional genetic diversity and structure among American kestrel populations (Falco sparverius) in North America
Birds employ numerous strategies to cope with seasonal fluctuations in high-quality habitat availability. Long distance migration is a common tactic; however, partial migration is especially common among broadly distributed species. Under partial migration systems, a portion of a species migrates, whereas the remainder inhabits breeding grounds year round. In this study, we identified...
Authors
Mark P. Miller, Thomas D. Mullins, John G. Parrish, Jeffrey R. Walters, Susan M. Haig
Tradeoffs between homing and habitat quality for spawning site selection by hatchery-origin Chinook salmon Tradeoffs between homing and habitat quality for spawning site selection by hatchery-origin Chinook salmon
Spawning site selection by female salmon is based on complex and poorly understood tradeoffs between the homing instinct and the availability of appropriate habitat for successful reproduction. Previous studies have shown that hatchery-origin Chinook salmon (Oncorhynchus tshawytscha) released from different acclimation sites return with varying degrees of fidelity to these areas. To...
Authors
Jeremy M. Cram, Christian E. Torgersen, Ryan S. Klett, George R. Pess, Darran May, Todd N. Pearsons, Andrew H. Dittman
Transport of biologically important nutrients by wind in an eroding cold desert Transport of biologically important nutrients by wind in an eroding cold desert
Wind erosion following fire is an important landscape process that can result in the redistribution of ecologically important soil resources. In this study we evaluated the potential for a fire patch in a desert shrubland to serve as a source of biologically important nutrients to the adjacent, downwind, unburned ecosystem. We analyzed nutrient concentrations (P, K, Ca, Mg, Cu, Fe, Mn...
Authors
Joel B. Sankey, Matthew J. Germino, Shawn G. Benner, Nancy F. Glenn, Amber N. Hoover
The paradox of cooling streams in a warming world: Regional climate trends do not parallel variable local trends in stream temperature in the Pacific continental United States The paradox of cooling streams in a warming world: Regional climate trends do not parallel variable local trends in stream temperature in the Pacific continental United States
Temperature is a fundamentally important driver of ecosystem processes in streams. Recent warming of terrestrial climates around the globe has motivated concern about consequent increases in stream temperature. More specifically, observed trends of increasing air temperature and declining stream flow are widely believed to result in corresponding increases in stream temperature. Here, we...
Authors
Ivan Arismendi, Sherri Johnson, Jason B. Dunham, Roy Haggerty, David Hockman-Wert
The U.S. Geological Survey Amphibian Research and Monitoring Initiative-2011 Annual Update The U.S. Geological Survey Amphibian Research and Monitoring Initiative-2011 Annual Update
Welcome to the inaugural issue of ARMI's Annual Update. This update provides highlights and significant milestones of this innovative program. ARMI is uniquely qualified to provide research and monitoring results that are scalable from local to national levels, and are useful to resource managers. ARMI has produced nearly 400 peer-reviewed publications, including 18 in 2011. Some of...
Authors
M.J. Adams, E. Muths, E.H.C. Grant, David A. Miller, J.H. Waddle, L.C. Ball
Spatiotemporal patterns and habitat associations of smallmouth bass (Micropterus dolomieu) invading salmon-rearing habitat Spatiotemporal patterns and habitat associations of smallmouth bass (Micropterus dolomieu) invading salmon-rearing habitat
1. Smallmouth bass (Micropterus dolomieu) have been widely introduced to fresh waters throughout the world to promote recreational fishing opportunities. In the Pacific Northwest (U.S.A.), upstream range expansions of predatory bass, especially into subyearling salmon-rearing grounds, are of increasing conservation concern, yet have received little scientific inquiry. Understanding the...
Authors
David J. Lawrence, Julian D. Olden, Christian E. Torgersen
A holistic strategy for adaptive land management A holistic strategy for adaptive land management
Adaptive management is widely applied to natural resources management (Holling 1973; Walters and Holling 1990). Adaptive management can be generally defined as an iterative decision-making process that incorporates formulation of management objectives, actions designed to address these objectives, monitoring of results, and repeated adaptation of management until desired results are...
Authors
Jeffrey E. Herrick, Michael C. Duniway, David A. Pyke, Brandon T. Bestelmeyer, Skye A. Wills, Joel R. Brown, Jason W. Karl, Kris M. Havstad
Index for characterizing post-fire soil environments in temperate coniferous forests Index for characterizing post-fire soil environments in temperate coniferous forests
Many scientists and managers have an interest in describing the environment following a fire to understand the effects on soil productivity, vegetation growth, and wildlife habitat, but little research has focused on the scientific rationale for classifying the post-fire environment. We developed an empirically-grounded soil post-fire index (PFI) based on available science and ecological
Authors
Theresa B. Jain, David S. Pilliod, Russell T. Graham, Leigh B. Lentile, Jonathan E. Sandquist
Interactions of tissue and fertilizer nitrogen on decomposition dynamics of lignin-rich conifer litter Interactions of tissue and fertilizer nitrogen on decomposition dynamics of lignin-rich conifer litter
High tissue nitrogen (N) accelerates decomposition of high-quality leaf litter in the early phases of mass loss, but the influence of initial tissue N variation on the decomposition of lignin-rich litter is less resolved. Because environmental changes such as atmospheric N deposition and elevated CO2 can alter tissue N levels within species more rapidly than they alter the species...
Authors
Steven S. Perakis, Joselin J. Matkins, David E. Hibbs
Coordinated bird monitoring: Technical recommendations for military lands Coordinated bird monitoring: Technical recommendations for military lands
The Department of Defense (DoD) is subject to several rules and regulations establishing responsibilities for monitoring migratory birds. The Sikes Act requires all military installations with significant natural resources to prepare and implement Integrated Natural Resources Management Plans (INRMPs). These plans guide the conservation and long-term management of natural resources on...
Authors
Jonathan Bart, Ann Manning, Richard Fischer, Chris Eberly
Fine scale relationships between sex, life history, and dispersal of masu salmon Fine scale relationships between sex, life history, and dispersal of masu salmon
Identifying the patterns and processes driving dispersal is critical for understanding population structure and dynamics. In many organisms, sex-biased dispersal is related to the type of mating system. Considerably less is known about the influence of life history variability on dispersal. Here we investigated patterns of dispersal in masu salmon (Oncorhynchus masou) to evaluate...
Authors
Shigeru Kitanishi, Toshiaki Yamamoto, Itsuro Koizumi, Jason B. Dunham, Seigo Higashi