Conservation Evidence: Evidence Data

Collected Evidence: Collected Evidence: Control large herbivore populations We found no evidence of the effects of controlling large herbivore populations on forests. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested this action during our systematic journal and report searches. Therefore we have been unable to assess whether or not the action is effective or has any harmful impacts. Please get in touch if you know of such a study for this action. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F1198https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F1198Thu, 19 May 2016 13:14:29 +0100Collected Evidence: Collected Evidence: Use fencing to enclose large herbivores (e.g. deer) We found no evidence of the effects of using fencing to enclose large herbivores on forests. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested this action during our systematic journal and report searches. Therefore we have been unable to assess whether or not the action is effective or has any harmful impacts. Please get in touch if you know of such a study for this action. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F1199https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F1199Thu, 19 May 2016 13:15:58 +0100Collected Evidence: Collected Evidence: Use wire fencing to exclude large native herbivores Five of ten studies (including two replicated, randomized, controlled studies) in Australia, Bhutan, Canada, France, Portugal and the USA found that using wire fencing to exclude large herbivores increased the cover and size of understory plants. Six studies found no effect of wire fencing on the cover, seed density, species richness or diversity of understory plants. Two of the above studies and one paired-sites study in Ireland examined the effect of using wire fencing to exclude large herbivores on young trees. One found it increased the biomass, one found it decreased the density of young trees and one found mixed effects depending on the species. Two replicated, controlled studies in the USA found that using wire fencing to exclude large herbivores increased tree density. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F1230https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F1230Mon, 23 May 2016 10:55:52 +0100Collected Evidence: Collected Evidence: Use electric fencing to exclude large native herbivores One controlled study in South Africa found that using electric fencing to exclude elephants and nyalas increased tree density. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F1231https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F1231Mon, 23 May 2016 11:15:59 +0100