—We sampled larval fish in 1999 and 2001 on a restored floodplain along the lower Cosumnes River, California, from the onset of flooding to when the sites dried or when larval fish became rare. We collected more than 13,000 fish, of which prickly sculpin Cottus asper made up the majority (73%). Eleven species made up 99% of the catch. Three native fishes (prickly sculpin, Sacramento sucker Cato...

Invasions of non-native species in marine ecosystems can be ecologically damaging and economically costly. Identifying ‘hot-spots’ of non-native species and their sources of introduction is necessary to maximize the effectiveness of invasion quarantine programs. We use a large spatially explicit marine fish database to show that there are a surprising number of non-native fishes on the reefs of...

Non-native fishes can cause ecological impacts as invasive species, but identifying which non-native species have harmful is critical to prioritizing management and policy responses. Here, we characterized the state of knowledge on a possibly overlooked group in United States: non-game native transplant (NGNT) fishes. We propose that NGNT may be understudied relative game fish exotic introduced...

The fishes and invertebrates of the Cosumnes River basin and its floodplain were intensively studied from 1999 through 2002 to determine their basic distribution, abundance, and ecology. The purpose of the studies, done in conjunction with studies on fluvial geomorphology, water chemistry, and other aspects of the physical and chemical environment, was to develop the information needed for mana...

Invasive lionfish are assumed to significantly affect Caribbean reef fish communities. However, evidence of lionfish effects on native reef fishes is based on uncontrolled observational studies or small-scale, unrepresentative experiments, with findings ranging from no effect to large effects on prey density and richness. Moreover, whether lionfish affect populations and communities of native r...

Salmonid fishes are cold water piscivores with a native distribution spanning nearly the entire temperate and subarctic northern hemisphere. Trout in the genus Oncorhynchus are the most widespread salmonid fishes and are among the most important fish species in the world, due to their extensive use in aquaculture and valuable fisheries. Trout that inhabit northwestern Mexico are the southernmos...

Natural wetlands have been increasingly transformed into urbanized ecosystems commonly colonized by stress-tolerant non-native species. Although non-native species present numerous threats to natural ecosystems, some could provide important benefits to urbanized ecosystems. This study investigated the extent of colonization by non-native fish and bird species of three urbanized wetlands in subt...

Escalating demands for water have led to substantial modifications of river systems in arid regions, which coupled with the widespread invasion of nonnative organisms, have increased the vulnerability of native aquatic species to extirpation. Whereas a number of studies have evaluated the role of modified flow regimes and nonnative species on native aquatic assemblages, few have been conducted ...