Conservation Evidence: Evidence Data

Collected Evidence: Collected Evidence: Control invasive non-native plants on farmland (such as Himalayan Balsam, Japanese knotweed) Two randomized, replicated, controlled trials in the Czech Republic found that removing all flower heads of giant hogweed plants at peak flowering time dramatically reduced seed production in giant hogweed. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F104https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F104Mon, 24 Oct 2011 21:59:27 +0100Collected Evidence: Collected Evidence: Control bracken One systematic review found that the herbicide asulam reduced bracken abundance if applied repeatedly, but cutting may be equally effective. A replicated laboratory trial in the UK found that the herbicide asulam inhibited the growth of three common moss species that commonly grow in association with bracken, when exposed over three weeks, but not if only exposed for 24 hours. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F105https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F105Mon, 24 Oct 2011 22:00:36 +0100Collected Evidence: Collected Evidence: Control grey squirrels We have captured no evidence for the effects of controlling grey squirrels on farmland wildlife. '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%2F106https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F106Mon, 24 Oct 2011 22:01:22 +0100Collected Evidence: Collected Evidence: Control mink A systematic review found seven studies demonstrating that trapping appears to be an effective method of reducing American mink populations, but firm conclusions could not be made due to limitations in experimental design. A large-scale trapping programme in the UK demonstrated that American mink have been successfully eradicated over a large area and this may have been associated with some localized water vole expansions. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F107https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F107Mon, 24 Oct 2011 22:02:53 +0100Collected Evidence: Collected Evidence: Protect individual nests of ground-nesting birds Two replicated, randomized, controlled studies from Sweden found providing nest exclosures offered some benefits to ground-nesting birds. One study found that protected nests had higher average daily survival rates than unprotected nests for both common redshank and northern lapwing, however, this study also reported higher predation of adult redshank on protected nests. One study found that the average hatching rate for southern dunlin was higher for protected rather than unprotected nests. This study also found no difference in the number of fledglings, breeding adults or new recruits during two periods with and without nest protection. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F108https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F108Mon, 24 Oct 2011 22:04:47 +0100Collected Evidence: Collected Evidence: Erect predator-proof fencing around important breeding sites for waders We have captured no evidence for the effects of erecting predator-proof fencing around important breeding sites for waders on farmland wildlife. '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%2F109https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F109Mon, 24 Oct 2011 22:06:13 +0100Collected Evidence: Collected Evidence: Remove coarse fish We have captured no evidence for the effects of removing coarse fish on farmland wildlife. '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%2F110https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F110Mon, 24 Oct 2011 22:08:13 +0100Collected Evidence: Collected Evidence: Manage wild deer numbers We have captured no evidence for the effects of managing wild deer numbers on farmland wildlife. '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%2F111https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F111Mon, 24 Oct 2011 22:10:17 +0100Collected Evidence: Collected Evidence: Provide medicated grit for grouse A controlled study in England found that red grouse had higher productivity in areas where medicated grit was provided. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F112https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F112Mon, 24 Oct 2011 22:12:09 +0100Collected Evidence: Collected Evidence: Control weeds without damaging other plants in conservation areas Two studies looked at the effects of controlling weeds on the surrounding vegetation. One study from the UK found that new populations of rare arable plants established following the control of perennial weeds in a nature conservation area. A replicated, controlled and randomized study in the UK found that using grass-specific herbicide reduced grass diversity and resulted in increases in broadleaved plants. Eleven studies investigated different methods of controlling plants. A review found that specific management regimes can reduce the abundance of pernicious weeds in nature conservation areas. Four replicated controlled studies (one also randomized) from Denmark and Germany found cutting and infection with fungal pathogens were effective methods for controlling creeping thistle and one replicated, randomized, controlled trial from the UK found long-term control was achieved by lenient grazing. A replicated, controlled and randomized study in Germany found weevils could be used to infect creeping thistle with systemic rust. One study found a non-native beetle was unsuitable for controlling creeping thistle because it had poor survival in the UK climate. A replicated controlled study found that spraying a high concentration of herbicide killed less than half of broad-leaved dock plants. A replicated, controlled, randomized study found black grass was eliminated with a December treatment of grass-specific herbicide. A small replicated study found that Hebridean sheep grazed more purple moor grass than Swaledale sheep. Two replicated controlled laboratory and grassland studies found negative impacts of the herbicide asulam on green dock beetles. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F123https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F123Tue, 01 Nov 2011 21:27:23 +0000Collected Evidence: Collected Evidence: Control scrub A replicated study from the UK found a negative relationship between the number of young grey partridge per adult and a combined intervention of scrub control, rough grazing and the restoration of various semi-natural habitats. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F127https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F127Mon, 14 Nov 2011 21:51:12 +0000Collected Evidence: Collected Evidence: Control predatory mammals and birds (foxes, crows, stoats and weasels) A total of nine individual studies from France and the UK (including five replicated controlled studies and a systematic review) looked at the effects of removing predators on birds. Three studies found controlling predatory mammals or birds (sometimes alongside other interventions) increased the abundance or population size of some birds. One of these studies from the UK found numbers of nationally declining songbirds increased on a site where predators were controlled, but there was no overall difference in bird abundance, species richness or diversity between predator control and no-control sites. Five studies (two replicated and controlled, two before-and-after trials) from the UK found some evidence for increased productivity, nest or reproductive success or survival of birds following bird or mammal predator control (sometimes alongside other interventions). A randomized, replicated, controlled study found hen harrier breeding success was no different between areas with and without hooded crow removal. A global systematic review including evidence from European farmland found that reproductive success of birds increased with predator removal. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F699https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F699Thu, 20 Dec 2012 13:08:22 +0000