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Overfishing of Inland Waters
Abstract Inland waters have received only slight consideration in recent discussions of the global fisheries crisis, even though inland fisheries provide much-needed protein, jobs, and income,Expand
Improving the fluorometric ammonium method: matrix effects, background fluorescence, and standard additions
Abstract Our understanding of the N cycle is affected by how accurately we can measure NH4+ in natural waters. Measuring NH4+ concentrations requires accounting for matrix effects (ME) that areExpand
Loss of a Harvested Fish Species Disrupts Carbon Flow in a Diverse Tropical River
TLDR
It is shown that a harvested migratory detrital-feeding fish (Prochilodontidae: Prochilodus mariae) modulates carbon flow and ecosystem metabolism, suggesting that losing one species from lower trophic levels can affect ecosystem functioning even in species-rich ecosystems. Expand
Fish distributions and nutrient cycling in streams: can fish create biogeochemical hotspots?
TLDR
The spatial distribution of fish could indeed create hotspots of nutrient recycling during the dry season in this species-rich tropical stream, and the prevalence of patchy distributions of stream fish and invertebrates suggests that hotspot of consumer nutrient recycling may often occur in stream ecosystems. Expand
The Didymo story: the role of low dissolved phosphorus in the formation of Didymosphenia geminata blooms
TLDR
The identification of very low soluble reactive phosphorus (SRP; below ∼2 ppb) as the proximate cause of bloom formation, has led to the more likely explanation that D. geminata blooms are the result of large-scale human intervention in climatic, atmospheric and edaphic processes that favour this ultra-oligotrophic species. Expand
Linking economic activities to the distribution of exotic plants.
TLDR
A hypothesis that links ecology and economics to provide a causal framework for the distribution of exotic plants in the United States shows that economics matter for resolving the exotic-species problem because the underlying causes, and some of the solutions, may lie in human-economic behaviors. Expand
Body Size: How body size mediates the role of animals in nutrient cycling in aquatic ecosystems
TLDR
A recent review details how animals can affect nutrient cycling in freshwater ecosystems, but the next step is to understand the controls on which animals are important regulators of nutrient dynamics in ecosystems. Expand
INTERACTIONS BETWEEN HERBIVOROUS FISHES AND LIMITING NUTRIENTS IN A TROPICAL STREAM ECOSYSTEM
TLDR
These experiments demonstrate simultaneous and interactive effects of top- down and bottom-up factors in limiting primary producers of tropical Andean streams and suggest that consumers can play an important role in influencing nutrient supply. Expand
Reach‐scale manipulations show invertebrate grazers depress algal resources in streams
Experimental tools that enable manipulations of organisms at larger scales allow for comparisons of processes across multiple spatial scales and expand our ability to make predictions aboutExpand
VARIATION IN MAYFLY SIZE AT METAMORPHOSIS AS A DEVELOPMENTAL RESPONSE TO RISK OF PREDATION
TLDR
It is proposed that large-scale patterns of variation in size and timing of metamorphosis represent adaptive phenotypic plasticity, whereby mayflies respond to variation in risk of predation, thereby maximizing their fitness in variable environments. Expand
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