Conservation Evidence: Evidence Data

Collected Evidence: Collected Evidence: Practise wildlife gardening A site comparison study in one city in the UK found more species of bumblebee in domestic city gardens with lower intensity of management, a measure reflecting the tidiness of the garden and the use of garden pesticides. Solitary bees were not affected by this measure. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2Tue, 18 May 2010 07:40:30 +0100Collected Evidence: Collected Evidence: Conserve old buildings or structures as nesting sites for bees We found no evidence for the effects of conserving old buildings and structures suitable for nesting wild bees. '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%2F4https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F4Tue, 18 May 2010 10:34:38 +0100Collected Evidence: Collected Evidence: Protect brownfield sites We have captured no evidence for the effects of interventions to protect brownfield sites from insensitive re-development. '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%2F3https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3Tue, 18 May 2010 14:57:41 +0100Collected Evidence: Collected Evidence: Manage land under power lines for wildlifeOne replicated trial in Maryland, USA found more bee species under power lines managed as scrub than in equivalent areas of annually mown grassland. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F31https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F31Thu, 20 May 2010 01:34:31 +0100Collected Evidence: Collected Evidence: Prevent spread of the small hive beetleOne replicated trial in the USA tested the effect of using mite-killing strips in commercial honey bee Apis mellifera transport packages, to reduce the spread of small hive beetle. More than half the beetles escaped the packages and were not killed by the strip. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F41https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F41Thu, 20 May 2010 04:31:44 +0100Collected Evidence: Collected Evidence: Manage wild honey bees sustainablyWe can find no evidence of the impact of reduced honey-hunting or improved harvesting methods on wild honey bee populations. One trial in southern Vietnam, showed that occupancy of artificial rafters by the giant honey bee Apis dorsata can be over 85% when rafters are placed by a large clearing greater than 25 m in diameter. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F32https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F32Thu, 20 May 2010 05:25:33 +0100Collected Evidence: Collected Evidence: Exclude ants from solitary bee nesting sitesOne replicated controlled trial showed that excluding ants from solitary nests of the endemic Australian bee Exonuera nigrescens increased production of offspring. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F46https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F46Thu, 20 May 2010 06:43:55 +0100Collected Evidence: Collected Evidence: Legally protect large native treesA study in degraded savannah in Minas Gerais, Brazil showed that the stingless bee species Melipona quadrifasciata selectively nested in the protected cerrado tree Caryocar brasiliense, evidence that protecting this species from logging or wood harvesting has helped to conserve stingless bees. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F34https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F34Thu, 20 May 2010 09:28:04 +0100Collected Evidence: Collected Evidence: Exclude introduced European earwigs from nest sitesIn California, USA, a replicated controlled trial showed that numbers of introduced European earwigs Forficula auricularia resting in solitary bee nest boxes can be reduced using a sticky barrier Tanglefoot. This treatment increased the use of the boxes by native bees. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F44https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F44Thu, 20 May 2010 10:20:05 +0100Collected Evidence: Collected Evidence: Provide nest boxes for stingless beesOne replicated trial tested nest boxes placed in trees for the stingless bee Melipona quadrifasciata in Brazil and found no uptake. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F49https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F49Thu, 20 May 2010 11:16:43 +0100Collected Evidence: Collected Evidence: Translocate solitary beesOne replicated trial in India showed that translocating carpenter bees Xylocopa fenestrata in immature stages can establish a population at a new site, but if adult bees are translocated a very small proportion remain at the new site. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F55https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F55Thu, 20 May 2010 11:18:56 +0100Collected Evidence: Collected Evidence: Retain dead wood in forest managementWe have found no evidence on the impact of retaining dead wood in forests or woodlands on wild bee communities or populations. '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%2F36https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F36Thu, 20 May 2010 12:43:18 +0100Collected Evidence: Collected Evidence: Reduce grazing intensity on pasturesOne replicated trial has shown that reducing the intensity of summer cattle grazing can increase the abundance, but not the species richness of cavity-nesting bees and wasps. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F23https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F23Thu, 20 May 2010 12:44:56 +0100Collected Evidence: Collected Evidence: Control fire risk using mechanical shrub control and/or prescribed burningOne replicated controlled trial in mixed temperate forest in the USA showed that for bee conservation, it is best to control fire using cutting and burning combined. This increases herbaceous plant cover in subsequent years. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F37https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F37Thu, 20 May 2010 12:49:47 +0100Collected Evidence: Collected Evidence: Keep pure breeding populations of native honey bee subspeciesOne replicated trial in Switzerland found that pure breeding populations of the European black honey bee Apis mellifera mellifera contained a significant proportion (28%) of hybrids with an introduced subspecies Apis mellifera carnica. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F43https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F43Thu, 20 May 2010 14:49:31 +0100Collected Evidence: Collected Evidence: Introduce mated females to small populations to improve genetic diversityOne trial in Brazil showed that genetic diversity can be maintained in small isolated populations of stingless bees Melipona scutellaris by regularly introducing inseminated queens. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F56https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F56Thu, 20 May 2010 15:23:26 +0100Collected Evidence: Collected Evidence: Increase the proportion of natural or semi-natural habitat in the farmed landscape We found no evidence demonstrating the effects of restoring natural or semi-natural habitat on bee diversity or abundance in neighbouring farms. '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%2F6https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F6Thu, 20 May 2010 15:31:52 +0100Collected Evidence: Collected Evidence: Restrict certain pesticidesOne site comparison study in Italy showed that a reduction in the number of solitary bee species in late summer associated with repeated applications of the insecticide fenitrothion can be avoided by not applying the insecticide. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F26https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F26Thu, 20 May 2010 17:07:09 +0100Collected Evidence: Collected Evidence: Increase the diversity of nectar and pollen plants in the landscape for beesOne large replicated controlled trial showed that the average abundance of long-tongued bumblebees on field margins was positively correlated with the number of pollen and nectar agri-environment agreements in a 10 km grid square. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F21https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F21Thu, 20 May 2010 18:33:50 +0100Collected Evidence: Collected Evidence: Increase areas of rough grassland for bumblebee nestingOne replicated controlled trial on lowland farms in Scotland showed that grassy field margins attracted nest-searching queen bumblebees in spring at higher densities than cropped field margins, managed or unmanaged grasslands or hedgerows. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F12https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F12Thu, 20 May 2010 18:37:48 +0100Collected Evidence: Collected Evidence: Restore species-rich grassland on road vergesOne replicated controlled trial showed that road verges planted with native prairie vegetation in Kansas, USA supported a greater number and diversity of bees than frequently mown grassed verges. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F30https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F30Thu, 20 May 2010 18:38:51 +0100Collected Evidence: Collected Evidence: Reduce pesticide or herbicide use generallyOne replicated trial in the USA showed that numbers of foraging bees on squash farms are not affected by the responsible use of pesticides. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F27https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F27Thu, 20 May 2010 19:22:20 +0100Collected Evidence: Collected Evidence: Reduce tillageEvidence on whether reduced tillage or no tillage benefits ground-nesting bees is mixed. Two replicated trials on squash Cucurbita spp. farms in the USA had contrasting results. One showed no difference in the abundance of bees between tilled and untilled farms, the other found three times more squash bees Peponapis pruinosa on no-till farms than on conventional farms. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F11https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F11Thu, 20 May 2010 19:41:46 +0100Collected Evidence: Collected Evidence: Protect existing natural or semi-natural habitat to prevent conversion to agriculture We have captured no evidence for the effects of protecting areas of natural or semi-natural habitat on bee populations or communities. '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%2F5https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F5Thu, 20 May 2010 19:58:47 +0100Collected Evidence: Collected Evidence: Manage hedges to benefit beesOne replicated controlled trial showed that hedges managed under the Scottish Rural Stewardship scheme do not attract more nest-searching or foraging queen bumblebees in spring than conventionally managed hedgerows. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F15https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F15Thu, 20 May 2010 21:16:02 +0100