Denmead, Lisa Helen

[["dc.bibliographiccitation.firstpage","161"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Journal of Applied Ecology"],["dc.bibliographiccitation.lastpage","170"],["dc.bibliographiccitation.volume","52"],["dc.contributor.author","Denmead, Lisa H."],["dc.contributor.author","Barker, Gary M."],["dc.contributor.author","Standish, Rachel J."],["dc.contributor.author","Didham, Raphael K."],["dc.date.accessioned","2018-11-07T10:01:30Z"],["dc.date.available","2018-11-07T10:01:30Z"],["dc.date.issued","2015"],["dc.description.abstract","Land-use intensification is increasing dramatically in production systems world-wide. Livestock production is an important component of production land use, and increases in livestock densities have had a wide range of negative consequences. The off-site effects of livestock grazing and trampling on native vegetation adjacent to pastoral land have received less attention than on-farm effects. Moreover, where significant ecological effects of livestock spillover have been identified, the mechanistic determinants of these effects have not typically been investigated. Here, we tested the mechanistic drivers of livestock trampling effects on land snail communities in forest remnants using simulated trampling under field conditions. We used a factorial combination of leaf-litter manipulation and trampling treatments to partition different causal drivers of livestock impacts on land snail communities and related them to five environmental variables that are altered by livestock. We show that even very low frequency trampling caused severe changes to land snail communities. Land snail density, even under the lowest trampling frequency, declined by an average of 42individualsm(-2) and land snail species richness decreased by an average of 10 species per plot compared with control plots. The underlying drivers of changes in land snail communities varied, but were primarily linked to leaf-litter mass, rather than soil compaction.Synthesis and applications. Overall, these results suggest that even minimal disturbance by livestock has large effects on land snail communities, but the underlying drivers of these effects require further investigation in longer duration and more intensive studies. Our results provide strong support for livestock exclusion as an important management tool for native forest remnants embedded within production landscapes. Overall, these results suggest that even minimal disturbance by livestock has large effects on land snail communities, but the underlying drivers of these effects require further investigation in longer duration and more intensive studies. Our results provide strong support for livestock exclusion as an important management tool for native forest remnants embedded within production landscapes."],["dc.identifier.doi","10.1111/1365-2664.12370"],["dc.identifier.isi","000348740800018"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/38031"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-blackwell"],["dc.relation.issn","1365-2664"],["dc.relation.issn","0021-8901"],["dc.title","Experimental evidence that even minor livestock trampling has severe effects on land snail communities in forest remnants"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e0116474"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","PLoS ONE"],["dc.bibliographiccitation.volume","10"],["dc.contributor.author","Didham, Raphael K."],["dc.contributor.author","Barker, Gary M."],["dc.contributor.author","Bartlam, Scott"],["dc.contributor.author","Deakin, Elizabeth L."],["dc.contributor.author","Denmead, Lisa H."],["dc.contributor.author","Fisk, Louise M."],["dc.contributor.author","Peters, Jennifer M. R."],["dc.contributor.author","Tylianakis, Jason M."],["dc.contributor.author","Wright, Hannah R."],["dc.contributor.author","Schipper, Louis A."],["dc.date.accessioned","2018-11-07T10:02:17Z"],["dc.date.available","2018-11-07T10:02:17Z"],["dc.date.issued","2015"],["dc.description.abstract","Land-use intensification is a central element in proposed strategies to address global food security. One rationale for accepting the negative consequences of land-use intensification for farmland biodiversity is that it could 'spare' further expansion of agriculture into remaining natural habitats. However, in many regions of the world the only natural habitats that can be spared are fragments within landscapes dominated by agriculture. Therefore, land-sparing arguments hinge on land-use intensification having low spillover effects into adjacent protected areas, otherwise net conservation gains will diminish with increasing intensification. We test, for the first time, whether the degree of spillover from farmland into adjacent natural habitats scales in magnitude with increasing land-use intensity. We identified a continuous land-use intensity gradient across pastoral farming systems in New Zealand (based on 13 components of farmer input and soil biogeochemistry variables), and measured cumulative off-site spillover effects of fertilisers and livestock on soil biogeochemistry in 21 adjacent forest remnants. Ten of 11 measured soil properties differed significantly between remnants and intact-forest reference sites, for both fenced and unfenced remnants, at both edge and interior. For seven variables, the magnitude of effects scaled significantly with magnitude of surrounding land-use intensity, through complex interactions with fencing and edge effects. In particular, total C, total N, delta N-15, total P and heavy-metal contaminants of phosphate fertilizers (Cd and U) increased significantly within remnants in response to increasing land-use intensity, and these effects were exac(erbated in unfenced relative to fenced remnants. This suggests movement of livestock into surrounding natural habitats is a significant component of agricultural spillover, but pervasive changes in soil biogeochemistry still occur through nutrient spillover channels alone, even in fenced remnants set aside for conservation. These results have important implications for the viability of land sparing as a strategy for balancing landscape-level conservation and production goals in agricultural landscapes."],["dc.identifier.doi","10.1371/journal.pone.0116474"],["dc.identifier.isi","000348168100006"],["dc.identifier.pmid","25575017"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/11432"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/38194"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Public Library Science"],["dc.relation.issn","1932-6203"],["dc.rights.access","openAccess"],["dc.title","Agricultural Intensification Exacerbates Spillover Effects on Soil Biogeochemistry in Adjacent Forest Remnants"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]