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Trophic Downgrading of Planet Earth
This empirical work supports long-standing theory about the role of top-down forcing in ecosystems but also highlights the unanticipated impacts of trophic cascades on processes as diverse as the dynamics of disease, wildfire, carbon sequestration, invasive species, and biogeochemical cycles.
Challenges in the Quest for Keystones
This list of scientists and lecturers from the United States and Canada who have contributed to the scientific literature over the past 25 years has been compiled.
Structural and Functional Loss in Restored Wetland Ecosystems
In restored wetland ecosystems with apparently natural hydrology and biological structure, biogeochemical function may remain degraded, even a century after restoration efforts.
Species Interactions Reverse Grassland Responses to Changing Climate
It is shown that, in a California grassland, species interactions strongly influence responses to changing climate, overturning direct climatic effects within 5 years and suggesting a prominent role for species interactions in ecosystem response to climate change.
Mountaintop Mining Consequences
Damage to ecosystems and threats to human health and the lack of effective mitigation require new approaches to mining regulation, including mountaintop mining with valley fills (MTM/VF), which is widespread throughout eastern Kentucky, West Virginia, and southwestern Virginia.
Effects of water velocity on algal carbon isotope ratios: Implications for river food web studies
We used variation in algal d13C between river habitats to study the spatial scale of energy flow through river food webs. We found a strong negative relationship between herbivore d13C (which…
A Classification of Ecological Boundaries
A classification system based on these attributes of ecological boundaries should help ecologists determine whether boundaries are truly comparable and can be applied when comparing empirical studies, comparing theories, and testing theoretical predictions against empirical results.
SEASONAL REASSEMBLY OF A RIVER FOOD WEB: FLOODS, DROUGHTS, AND IMPACTS OF FISH
Eighteen years of field observations and five summer field experiments in a coastal California river suggest that hydrologic regimes influence algal blooms and the impacts of fish on algae,…
HOW FINE SEDIMENT IN RIVERBEDS IMPAIRS GROWTH AND SURVIVAL OF JUVENILE SALMONIDS
The linear relationship between deposited fine sediment and juvenile steelhead growth suggests that there is no threshold below which exacerbation of fine-sediment delivery and storage in gravel bedded rivers will be harmless, but also that any reduction could produce immediate benefits for salmonid restoration.