Constructed wetland treatment of swine wastewater probably involves substantial denitrification. Our objective was to assess denitrification and denitrification enzyme activity (DEA) in such wetlands in relation to plant communities, N loading, carbon or nitrogen limitations, and water depth. Two wetland cells each 3.6 m wide and 33.5 m long were connected in series. One set of cells was plante...

1. Herbivory on freshwater macrophytes has been assumed to be insignificant and rare. More recent evidence suggests herbivory is common and the impact of invasive invertebrate herbivores can be substantial. However, little is known about consumption of macrophytes by fish. 2. We performed a series of feeding assays, based on the consumption by common carp (Cyprinus carpio), to determine if any ...

We used a subsidy–stress model as a basis for predicting macroinvertebrate community response to a steep gradient of P enrichment in the Florida Everglades, a P-limited wetland ecosystem. We tested the hypothesis that consumers were resource limited and their biomass would show a subsidy response (increase) to low-to-moderate levels of P enrichment, but a stress response (decrease) at high leve...

Paludiculture, the cultivation of crops on rewetted peatlands, is often proposed as a viable climate change mitigation option that reduces greenhouse gas emissions (GHGe), while simultaneously providing novel agricultural business options. In West Europe, experiments are ongoing in using paludicrop cattail (Typha spp.) feedstock for insulation panel material. Here, we use Dutch case study to in...

The transport of sediment in regions with vegetation plays an important role aquatic ecosystems and landform evolution river deltas. In this study, flow parameters suspended concentration (SSC) within emergent canopy real plant morphology (Typha latifolia) were measured a laboratory channel. T. latifolia is common marsh species multiple thin leaves emerging from tight bundle (culm) at the bed. ...

Andisol has a large surface area, is mesoporous, and contains the active groups' silanol (Si-OH) aluminol (Al-OH). Besides andisol, cellulose good adsorbent, because microcrystalline an hydroxyl group (OH). The number of adsorbent groups can be enhanced by chemically modifying area (increment), or adding other materials. These modifications included alkaline modified-andisol with addition NaOH ...