The dirt on sediments
Loren M. Smith, Ned H. "Chip" Euliss Jr.
2010, National Wetlands Newsletter (32) 25-26
In the wetland science field, sediment deposition is often thought of as being beneficial especially when one thinks of coastal estuarine systems. For example, sediments deposited from streams and rivers are necessary to naturally build and maintain tidal marshes. These sediments come from eroded upland soils in the interior of...
The need for simultaneous evaluation of ecosystem services and land use change
Ned H. Euliss Jr., Loren M. Smith, Shu-Guang Liu, Min Feng, David M. Mushet, Roger F. Auch, Thomas R. Loveland
2010, Environmental Science & Technology (44) 7761-7763
We are living in a period of massive global change. This rate of change may be almost without precedent in geologic history (1). Even the most remote areas of the planet are influenced by human activities. Modern landscapes have been highly modified to accommodate a growing human population that the...
Factors associated with hunter success for ducks on state-owned lands in Illinois, USA
Joshua D. Stafford, Aaron T. Pearse, Christopher S. Hine, Aaron P. Yetter, Michelle M. Horath
2010, Wildlife Biology (16) 113-122
Factors that influence hunter success for waterfowl are subject to varying levels of control by managers. The relative influence of these factors is poorly understood, but such information may be valuable to guide management actions intended to promote successful hunting and communicate management decisions to constituents. We used bag-check data...
On the road again for a bird survey that counts
Dave Ziolkowski Jr., Keith Pardieck, John R. Sauer
2010, Birding (42) 32-41
Nitrogen-limitation and invasive sweetclover impacts vary between two Great Plains plant communities
Laura C. Van Riper, Diane L. Larson, Jennifer L. Larson
2010, Biological Invasions (12) 2735-2749
Yellow sweetclover is an exotic herbaceous legume common in the Great Plains of the US. Although woody legumes have been shown to affect ecosystem processes through nitrogen (N) fixation (i.e., they can be considered "transformers" sensu Richardson et al. (2000)), the same has not been shown for short-lived herbaceous species....
Multilocus patterns of nucleotide polymorphism and demographic change in Taxodium distichum (Cupressaceae) in the lower Mississippi River alluvial valley
Junko Kusumi, Li Zidong, Tomoyuki Kado, Yoshihiko Tsumura, Beth A. Middleton, Hidenori Tachida
2010, American Journal of Botany (97) 1848-1857
• Premise of the Study: Studies of the geographic patterns of genetic variation can give important insights into the past population structure of species. Our study species, Taxodium distichum L. (bald‐cypress), prefers riparian and wetland habitats and is widely distributed in southeastern North America and Mexico. We compared the genetic variation of T. distichum with that...
Colloidal and physical transport textures exhibited by electrum and naumannite in bonanza epithermal veins from western USA, and their significance
James A. Saunders, Peter G. Vikre, Derick L. Unger, Lee Beasley
2010, Conference Paper, Great Basin evolution and metallogeny : Geological Society of Nevada, 2010 Symposium, May 14-22
It is reasonably clear that disequilibrium or “far-from equilibrium” conditions lead to the formation of silica colloids and their deposition in many epithermal deposits. This implies ore-forming solutions had elevated concentrations of dissolved silica, well in excess of amorphous silica saturation. We have previously demonstrated that such colloidal silica particles...
Molecular phylogeny of the spoonbills (Aves: Threskiornithidae) based on mitochondrial DNA
R. Terry Chesser, Carol K.L. Yeung, Cheng-Te Yao, Xiu-Hua Tian, Shou-Hsien Li
2010, Zootaxa (2603) 53-60
Spoonbills (genus Platalea) are a small group of wading birds, generally considered to constitute the subfamily Plataleinae (Aves: Threskiornithidae). We reconstructed phylogenetic relationships among the six species of spoonbills using variation in sequences of the mitochondrial genes ND2 and cytochrome b (total 1796 bp). Topologies of phylogenetic trees reconstructed using...
Models for inference in dynamic metacommunity systems
Robert M. Dorazio, Marc Kery, J. Andrew Royle, Matthias Plattner
2010, Ecology (91) 2466-2475
A variety of processes are thought to be involved in the formation and dynamics of species assemblages. For example, various metacommunity theories are based on differences in the relative contributions of dispersal of species among local communities and interactions of species within local communities. Interestingly, metacommunity theories continue to be...
Microbial production of isotopically light iron(II) in a modern chemically precipitated sediment and implications for isotopic variations in ancient rocks
G.E. Tangalos, B.L. Beard, C.M. Johnson, Charles N. Alpers, E.S. Shelobolina, H. Xu, H. Konishi, E. E. Roden
2010, Geobiology (8) 197-208
The inventories and Fe isotope composition of aqueous Fe(II) and solid-phase Fe compounds were quantified in neutral-pH, chemically precipitated sediments downstream of the Iron Mountain acid mine drainage site in northern California, USA. The sediments contain high concentrations of amorphous Fe(III) oxyhydroxides [Fe(III)am] that allow dissimilatory iron reduction (DIR) to...
Phytoestrogens and mycotoxins in Iowa streams: An examination of underinvestigated compounds in agricultural basins
Dana W. Kolpin, Corinne C. Hoerger, Michael T. Meyer, Felix E. Wettstein, Laura E. Hubbard, Thomas D. Bucheli
2010, Journal of Environmental Quality (39) 2089-2099
This study provides the first broad-scale investigation on the spatial and temporal occurrence of phytoestrogens and mycotoxins in streams in the United States. Fifteen stream sites across Iowa were sampled five times throughout the 2008 growing season to capture a range of climatic and crop-growth conditions. Basin size upstream from...
Isle Royale study affirms the ability of wolves to persist
Dave Mech, Matthew A. Cronin
2010, Biological Conservation (143) 535-536
Intraspecific variation in gill morphology of juvenile Nile perch, Lates niloticus, in Lake Nabugabo, Uganda
Jaclyn A. Paterson, Lauren J. Chapman, Pamela J. Schofield
2010, Environmental Biology of Fishes (88) 97-104
Several studies have demonstrated intraspecific variation in fish gill size that relates to variation in dissolved oxygen (DO) availability across habitats. In Lake Nabugabo, East Africa, ecological change over the past 12 years has coincided with a shift in the distribution of introduced Nile perch such that a larger proportion...
Interfacing models of wildlife habitat and human development to predict the future distribution of puma habitat
Christopher L. Burdett, Kevin R. Crooks, David M. Theobald, Kenneth R. Wilson, Erin E. Boydston, Lisa A. Lyren, Robert N. Fisher, T. Winston Vickers, Scott A. Morrison, Walter M. Boyce
2010, Ecosphere (1) Article 4
The impact of human land uses on ecological systems typically differ relative to how extensively natural conditions are modified. Exurban development is intermediate-intensity residential development that often occurs in natural landscapes. Most species-habitat models do not evaluate the effects of such intermediate levels of human development and even fewer predict...
Interacting parasites
Kevin D. Lafferty
2010, Science (330) 187-188
Parasitism is the most popular life-style on Earth, and many vertebrates host more than one kind of parasite at a time. A common assumption is that parasite species rarely interact, because they often exploit different tissues in a host, and this use of discrete resources limits competition (<a id="xref-ref-1-1"...
Inter-nesting habitat-use patterns of loggerhead sea turtles: Enhancing satellite tracking with benthic mapping
Kristen M. Hart, David G. Zawada, Ikuko Fujisaki, Barbara H. Lidz
2010, Aquatic Biology (11) 77-90
The loggerhead sea turtle Caretta caretta faces declining nest numbers and bycatches from commercial longline fishing in the southeastern USA. Understanding spatial and temporal habitat-use patterns of these turtles, especially reproductive females in the neritic zone, is critical for guiding management decisions. To assess marine turtle habitat use within the...
Streamflow of 2009--Water year summary
Jian Xiaodong, David M. Wolock, Harry F. Lins, Steve Brady
2010, Fact Sheet 2010-3058
The maps and graph in this summary describe streamflow conditions for water-year 2009 (October 1, 2008 to September 30, 2009) in the context of the 80-year period 1930-2009, unless otherwise noted. The illustrations are based on observed data from the U.S. Geological Survey's National Streamflow Information Program. The period 1930-2009...
Influence of potential sea level rise on societal vulnerability to hurricane storm-surge hazards, Sarasota County, Florida
Tim G. Frazier, Nathan Wood, Brent Yarnal, Denise H. Bauer
2010, Applied Geography (30) 490-505
Although the potential for hurricanes under current climatic conditions continue to threaten coastal communities, there is concern that climate change, specifically potential increases in sea level, could influence the impacts of future hurricanes. To examine the potential effect of sea level rise on community vulnerability to future hurricanes, we assess...
Influence of environmental factors on biotic responses to nutrient enrichment in agricultural streams
Terry R. Maret, Christopher P. Konrad, Andrew W. Tranmer
2010, Journal of the American Water Resources Association (46) 498-513
The influence of environmental factors on biotic responses to nutrients was examined in three diverse agricultural regions of the United States. Seventy wadeable sites were selected along an agricultural land use gradient while minimizing natural variation within each region. Nutrients, habitat, algae, macroinvertebrates, and macrophyte cover were sampled during a...
Experimental drought in a tropical rain forest increases soil carbon dioxide losses to the atmosphere
Cory C. Cleveland, William R. Wieder, Sasha C. Reed, Alan R. Townsend
2010, Ecology (91) 2313-2323
Climate models predict precipitation changes for much of the humid tropics, yet few studies have investigated the potential consequences of drought on soil carbon (C) cycling in this important biome. In wet tropical forests, drought could stimulate soil respiration via overall reductions in soil anoxia, but previous research suggests that...
Evidence for a novel marine harmful algal bloom: Cyanotoxin (Microcystin) transfer from land to sea otters
Melissa A. Miller, Raphael M. Kudela, Abdu Mekebri, Dave Crane, Stori C. Oates, M. Tim Tinker, Michelle Staedler, Woutrina A. Miller, Sharon Toy-Choutka, Clare Dominik, Dane Hardin, Gregg Langlois, Michael Murray, Kim Ward, David A. Jessup
2010, PLoS ONE (5) 1-11
"Super-blooms" of cyanobacteria that produce potent and environmentally persistent biotoxins (microcystins) are an emerging global health issue in freshwater habitats. Monitoring of the marine environment for secondary impacts has been minimal, although microcystin-contaminated freshwater is known to be entering marine ecosystems. Here we confirm deaths of marine mammals from microcystin...
Evaluation of nontarget effects of methoprene applied to catch basins for mosquito control
Mari Butler, Howard S. Ginsberg, Roger A. LeBrun, Alan Gettman
2010, Journal of Vector Ecology (35) 372-384
The mosquito larvicide methoprene is a juvenile growth hormone mimic that is widely used to control mosquito larvae in stormwater catch basins. This study addresses two concerns pertaining to methoprene's use for mosquito control. First, measurements of methoprene concentrations were made from water in catch basins that had been treated...
Defensible decision making: Harnessing the power of adaptive resource management
M. Knutson, H. Laskowski, Christine Moore, E. Lonsdorf, S. Lor, L. Stevenson
2010, The Wildlife Professional (4) 58-62
Characterizing 6 August 2007 Crandall Canyon mine collapse from ALOS PALSAR InSAR
Zhong Lu, Charles Wicks Jr.
2010, Geomatics, Natural Hazards and Risk (1) 85-93
We used ALOS InSAR images to study land surface deformation over the Crandall Canyon mine in Utah, which collapsed on 6 August 2007 and killed six miners. The collapse was registered as a ML 3.9 seismic event. An InSAR image spanning the time of the collapse shows 25–30 cm surface...
Seeding method influences warm-season grass abundance and distribution but not local diversity in grassland restoration
Kathryn A. Yurkonis, Brian J. Wilsey, Kirk A. Moloney, Pauline Drobney, Diane L. Larson
2010, Restoration Ecology (18) 344-353
Ecological theory predicts that the arrangement of seedlings in newly restored communities may influence future species diversity and composition. We test the prediction that smaller distances between neighboring seeds in drill seeded grassland plantings would result in lower species diversity, greater weed abundance, and larger conspecific patch sizes than otherwise...
