Waterfowl often have been assumed to disperse freshwater aquatic organisms between isolated wetlands, but no one has analyzed the impact of this transport on the population structure of aquatic organisms. For three cladocerans (Daphnia ambigua, Daphnia laevis, and Sida crystallina) and one bryozoan (Cristatella mucedo), we estimated the genetic distances between populations across North America...

The Arctic Coastal Plain (ACP) of northern Alaska consists of an extremely low gradient, lake-rich landscape that is characterized by a complex network of aquatic habitats and surface features strongly influenced by permafrost dynamics. Much is unknown about the form, function, and ecological conditions in this unique hydrologic setting. Amplified climate change and landscape responses in the A...

Spatialized N budgets in a large agricultural Mediterranean watershed: high loading and low transfer L. Lassaletta, E. Romero, G. Billen, J. Garnier, H. Garcı́a-Gómez, and J. V. Rovira Environmental Pollution & Aquatic Ecosystem Research Group, Department of Ecology, Universidad Complutense de Madrid, c/ José Antonio Novais 28040 Madrid, Spain CNRS/UPMC, Sisyphe laboratory box 123, 4 place Jussi...

In preparation for this review, members of our aquatic conservation research group (professor, postdoctoral scholar, and three Ph.D. students, all engaged in research on conservation of aquatic invertebrates) read the Proposed Rule, Version 2.0 Best Available Biological Information for Four Petitioned Springsnails in Idaho, Oregon, Washington, and Wyoming (USFWS 2005; hereafter “BAI”), Interior...

Many air-breathing aquatic foragers may be killed by aerial or subsurface predators while recovering oxygen at the surface; yet the influence of predation risk on time allocation during dive cycles is little known in spite of numerous studies on optimal diving. We modeled diving behavior under the risk of predation at the surface. The relationship between time spent at the surface and the risk ...

Stream research has contributed only modestly to general ecological theory. Moreover, the rate of generation of new ideas in stream ecology may have slowed recently. These shortcomings might be remedied by a more deliberate effort to generate new, creative ideas about streams that will enhance their use in developing general theory. The creative process has been thoroughly studied by psychologi...

Turbulent Flow in wetlands with submerged and floating aquatic plants was studied by applying Boit’s poroelastic theory to turbulent flow. The velocity distribution formulas were described by solving the modified Bessel equations. The effects of plant porosity and turbulent coefficient on the velocity distribution, shear stress distribution and energy relations were analytically derived. Severa...

This systematic review considers how water quality and aquatic ecology models represent the phosphorus cycle. Although the focus is on phosphorus, many of the observations and discussion points here relate to aquatic ecosystem models in general. The review considers how models compare across domains of application, the degree to which current models are fit for purpose, how to choose between mu...

Fuzzy ordered classifiers were used to assign fuzzy labels to river sites expressing their suitability as a habitat for a certain macroinvertebrate taxon, given up to three abiotic properties of the considered river site. Themodelswere built using expert knowledge and evaluated ondata collected in the Province ofOverijssel in the Netherlands. Apart from a performance measure for crisp classifie...