Historical nitrogen content of bryophyte tissue as an indicator of increased nitrogen deposition in the Cape Metropolitan Area, South Africa

Reconstructing historical trends of polycyclic aromatic hydrocarbon deposition in a remote area of Spain using herbarium moss material

“…In contrast with other studies (Peñuelas and Filella, 2001;Solga et al, 2006;Wilson et al, 2008), N concentrations in mosses collected at Bertiz significantly decreased (P < 0,05) between the 19 th and 21 st century. A plausible explanation may be found in the 19 th century history of the Señorío de Bertiz.…”

Changes in the soil, litter, and vegetation nitrogen and carbon concentrations of semiarid shrublands in response to chronic dry season nitrogen input

“…We used a simple massbalance model to estimate the total ecosystem N storage and speculated that soil, tissue, and litter pools would begin to exhibit significant N enrichment as soon as cumulative N addition exceeded storage capacity. We used well-accepted indicators of N enrichment, including soil pH and the tissue and litter N concentration and the C:N ratio, which have been used to estimate the critical load for N in a variety of ecosystems (Cresser, 2000;Fenn et al, 2008Fenn et al, , 2010Gundersen et al, 1998;Horswill et al, 2008;Skeffington et al, 2007;Wilson et al, 2009). Here we report the potential N uptake capacity for these semi-arid shrublands and the cumulative N input that results in significant N enrichment of soil, tissue, and litter pools.…”

Temporal biodiversity change in transformed landscapes: a southern African perspective

“…Swart & Pool 2007). In terrestrial systems, the likely significance of nutrient loading, and other forms of pollution from aerial sources, has frequently been noted, but the number of studies of effects on diversity is low (van Tienhoven & Scholes 2004;Wilson et al 2009b). …”