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Year Published: 2010

Factors influencing wood mobilization in Minnesota streams

Natural pieces of wood provide a variety of ecosystem functions in streams including habitat, organic matter retention, increased hyporheic exchange and transient storage, and enhanced hydraulic and geomorphic heterogeneity. Wood mobilization is a critical process in determining the residence time of wood. We documented the characteristics and...

Merten, Eric; Finlay, Jacques; Johnson, Lucinda; Newman, Raymond; Stefan, Heinz; Vondracek, Bruce C.

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Year Published: 2010

Individual growth and reproductive behavior in a newly established population of northern snakehead (Channa argus), Potomac River, USA

Northern snakehead (Channa argus) were first found in the Potomac River in 2004. In 2007, we documented feeding and reproductive behavior to better understand how this species is performing in this novel environment. From April to October, we used electrofishing surveys to collect data on growth, condition, and gonad weight of adult fish. Growth...

Landis, Andrew M. Gascho; Lapointe, Nicolas W. R.; Angermeier, Paul L.

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Year Published: 2010

The carbon budget of the northern cryosphere region

The northern cryosphere is undergoing substantial warming of permafrost and loss of sea ice. Release of stored carbon to the atmosphere in response to this change has the potential to affect the global climate system. Studies indicate that the northern cryosphere has been not only a substantial sink for atmospheric CO2 in recent decades, but also...

McGuire, A. David; Macdonald, Robie W.; Schuur, Edward A.G.; Harden, Jennifer W.; Kuhry, Peter; Hayes, Daniel J.; Christensen, Torben R.; Heimann, Martin

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Year Published: 2010

Habitat use by fishes in groundwater-dependent streams of southern Oklahoma

Habitat use by fishes in groundwater-dependent ecosystems with springs and spring-fed creeks is not widely studied or well understood. We evaluated habitat use by three disjunct populations of fish species (Phoxinus erythrogaster, Nocomis asper and Etheostoma microperca) and, a widespread species, E. spectabile in spring-...

Seilheimer, Titus S.; Fisher, William L.

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Year Published: 2010

Patterns of ancestry and genetic diversity in reintroduced populations of the slimy sculpin: Implications for conservation

Reintroductions are a common approach for preserving intraspecific biodiversity in fragmented landscapes. However, they may exacerbate the reduction in genetic diversity initially caused by population fragmentation because the effective population size of reintroduced populations is often smaller and reintroduced populations also tend to be more...

Huff, David D.; Miller, Loren M.; Vondracek, Bruce C.

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Year Published: 2010

Predators shape distribution and promote diversification of morphological defenses in Leucorrhinia , Odonata

Predators strongly influence species assemblages and shape morphological defenses of prey. Interestingly, adaptations that constitute effective defenses against one type of predator may render the prey susceptible to other types of predators. Hence, prey may evolve different strategies to escape predation, which may facilitate adaptive radiation...

Petrin, Zlatko; Schilling, Emily Gaenzle; Loftin, Cyndy; Johansson, Frank

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Year Published: 2010

Fish community structure in natural and engineered habitats in the Kansas River

We investigated fish assemblage structure in engineered (rip-rap) and natural habitats (log jams and mud banks) in the Kansas River USA to determine if natural structures had higher abundance and diversity of fishes at a local spatial scale. A total of 439 randomly selected sites were boat electrofished from May to August 2005 and 2006. Mean...

White, K.; Gerken, J.; Paukert, Craig P.; Makinster, Andrew S.
White K. Fish community structure in natural and engineered habitats in the Kansas River. River research and applications. 2010-09;26:797-805.

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Year Published: 2010

Bald eagle predation on common loon egg

The Common Loon (Gavia immer) must defend against many potential egg predators during incubation, including corvids, Herring Gulls (Larus argentatus), raccoons (Procyon lotor), striped skunk (Mephitis mephitis), fisher (Martes pennanti), and mink (Neovison vison) (McIntyre 1988, Evers 2004, McCann et al. 2005). Bald Eagles (Haliaeetus...

DeStefano, Stephen; McCarthy, Kyle P.; Laskowski, Tom

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Year Published: 2010

King eider use an income strategy for egg production: a case study for incorporating individual dietary variation into nutrient allocation research

The use of stored nutrients for reproduction represents an important component of life-history variation. Recent studies from several species have used stable isotopes to estimate the reliance on stored body reserves in reproduction. Such approaches rely on population-level dietary endpoints to characterize stored reserves (“capital”)...

Oppel, Steffen; Powell, Abby N.; O'Brien, Diane M.

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Year Published: 2010

Utility of mesohabitat features for determining habitat associations of subadult sharks in Georgia’s estuaries

We examined the affects of selected water quality variables on the presence of subadult sharks in six of nine Georgia estuaries. During 231 longline sets, we captured 415 individuals representing nine species. Atlantic sharpnose shark (Rhizoprionodon terranovae), bonnethead (Sphyrna tiburo), blacktip shark (Carcharhinus limbatus) and sandbar shark...

Belcher, C.N.; Jennings, Cecil A.
Belcher C. Utility of mesohabitat features for determining habitat associations of subadult sharks in Georgia’s estuaries. Environmental biology of fishes. 2010;88:349-359.

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Year Published: 2010

Preface: Conservation Challenges for Stream Fish Ecologists

No abstract available.

Angermeier, Paul

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Year Published: 2010

Procapra picticaudata (Artiodactyla: Bovidae)

Procapra picticaudata Hodgson, 1846, is commonly called the Tibetan gazelle, goa (= Tibetan), or zang yuan ling (= Chinese) and is monotypic. It is a high-elevation specialist endemic to the Tibetan Plateau where it prefers alpine meadow and alpine steppe but uses other lower-elevation plains and valleys. It is partial to good grasslands with high...

Leslie, David M.