P. Grennfelt’s scientific contributions

... These detrimental effects can include biodiversity loss through opportunistic species outcompeting native herbaceous or understory species Simkin et al., 2016;Stevens et al., 2010); changes in forest carbon stocks Thomas et al., 2010), shifts in forest community composition, and/or differential impacts across species due to variable N sensitivity (Clark, Phelan, et al., 2023;Coughlin et al., 2023); NO 3 − leaching losses leading to shifts toward more acid-tolerant and nitrophilic species within terrestrial ecosystem (Bobbink et al., 2010;Högberg et al., 2006;Matson et al., 2002) and increases in NO 3 − export to fresh and coastal waters (Driscoll et al., 2003;Gilliam et al., 2019); soil acidification potentially leading to decreased buffering capacity and nutrient imbalances in tree foliage or phloem (Bowman et al., 2008;Likens et al., 1996;Sullivan et al., 2013); increased tree mortality in areas of N saturation because of compounding factors such as drought (Dietze & Moorcroft, 2011;Wallace et al., 2007); and consequences to ecosystem services . To protect terrestrial ecosystems, regulatory agencies and ecological researchers have established a framework to evaluate the threshold (i.e., critical load [CL]) below which harmful ecological impacts are not expected to occur given current knowledge (Nilsson, 1988). Significant advances have been made in quantifying CLs for terrestrial ecosystem components over the last decade (Blett et al., 2014). ...

Reference:

Characterizing localized nitrogen sensitivity of tree species and the associated influences of mediating factors