James H. McCutchan

TL;DR: For example, this article found that the trophic shift for C was lower for consumers acidified prior to analysis than for unacidified samples ( +0.5 + 0.13%o rather than 0.0%o, as commonly assumed).

TL;DR: In this paper, the relative contribution of algal carbon to macroinvertebrate production across a gradient of elevation in a Rocky Mountain stream (North St. Vrain Creek, Colorado).

TL;DR: Results suggest that isotopic ratios in autotrophs can be used to detect and quantify increases in N enrichment associated with land use change and suggest the biotic capacity of headwater ecosystems to assimilate increases in inorganic N from residential development may be insufficient to prevent nitrogen enrichment over considerable distances and multiple aquatic ecosystems downstream.

TL;DR: The combination of low atmospheric N deposition, tree mortality spread over multiple years, and high compensatory capacity associated with undisturbed residual vegetation and soils explains the ability of these beetle-infested watersheds to retain nitrate despite catastrophic mortality of the dominant canopy tree species.

TL;DR: In this article, a tropical stream in the Luquillo Experimental Forest, northeastern Puerto Rico, was used to measure the rate of photosynthesis and respiration, and the results indicated that intense herbivory, which is favored by the presence of large herbivores and consistently high temperatures, may be mo...