Although bedrock weathering strongly influences water quality and global carbon and nitrogen budgets, the weathering depths and rates within subsurface are not well understood nor predictable. Determination of both porewater chemistry and subsurface water flow are needed in order to develop more com

This dataset is from an ongoing global survey of surface water metabolites to provide understanding of the character of organic matter that may be delivered to subsurface sediments via hydrologic exchange. Data from this survey are published in batches. This first batch contains data from 27 sites.

Groundwater contributions to streams, or baseflow, represents a mix of numerous flow paths through the subsurface of varying ages that are important to understanding system hydrologic lag and solute export. To better constrain numerical estimates of baseflow age, we used a novel experiment from Sanf

This dataset comprises paired environmental and genomic data for soil samples collected across meander-bound floodplains G (ERMG), L (ERML) and Z (ERMZ). A total of 96 soil samples (32 per floodplain) from the ~ 10-25 cm layer were collected in September 2015, during base flow conditions. An additio

Nectar robbers are often assumed to be plant antagonists; however, empirical data show that the impacts of these animals range from negative to positive depending on the system and ecological conditions. We experimentally evaluated the combined effects of nectar robbing and ant visitation on three i

Ecosystem carbon cycle feedbacks to climate change comprise one of the largest remaining sources of uncertainty in global model predictions of future climate. Both direct climate effects on carbon cycling and indirect effects via climate-induced shifts in species composition may alter ecosystem carb

Facultative paedomorphosis is an environmentally induced polymorphism that results in the coexistence of mature, gilled, and fully aquatic paedomorphic adults and transformed, terrestrial, metamorphic adults in the same population. This polymorphism has been of interest to scientists for decades bec

Habitat patches often differ in environmental conditions, and the degree of environmental heterogeneity among patches is thought to influence population dynamics at the regional (metapopulation) scale. In a previous study, I found evidence of a source– sink dynamic in a metapopulation of the mayfly

Heterosis in WUE may help to explain the relatively high survival of both reciprocal F1 hybrids in dry sites within the natural hybrid zone, and differences among genotypic classes were spatially and temporally consistent.

Many species use refugia to avoid predators, but remaining in a refuge is costly because foraging and engaging in other beneficial activities are curtailed while in a refuge. Thus, we expect that the duration of refuge use will be optimized. We tested a key prediction of this optimization hypothesis

A picture is provided of the intra-specific response of a suite of traits to ecological stress in the butterfly Speyeria mormonia, whereby fecundity is affected by adult dietary restriction, a pattern reminiscent of a survival/reproduction trade-off, but across a developmental boundary.

Ralph E Clark III. September 6, 1997. ?

Ralph E Clark. March 4, 1997.

Alex F. Chappell. Colorado Division of Wildlife. 1997.

Gunnison Soil Conservation District. March 14, 1997.