Collected Evidence: Collected Evidence: Apply insecticide to protect seedlings from invertebrates One randomized, replicated, controlled study in the USA found that applying insecticide increased tree seedling emergence and survival.      Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1149https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1149Tue, 17 May 2016 15:18:10 +0100Collected Evidence: Collected Evidence: Adopt certification One replicated, site comparison study in Ethiopia found that the risk of deforestation was lower in certified than uncertified forests. One controlled, before-and-after trial in Gabon found that when logging intensity was taken into account although tree damage did not differ, changes in above-ground biomass were smaller in certified than in uncertified forests.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1150https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1150Tue, 17 May 2016 16:23:09 +0100Collected Evidence: Collected Evidence: Control birds One controlled study in Australia found that removing bell-miners from narrow-leaved peppermint forests did not improve the health of the trees in the forest.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1151https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1151Wed, 18 May 2016 14:46:22 +0100Collected Evidence: Collected Evidence: Adopt community-based management to protect forests Two studies from Ethiopia and Nepal (including one replicated, before-and-after, site comparison) found that forest cover increased more in community-managed forests than in forests not managed by local communities. One replicated, site comparison study in Colombia found that deforestation rates in community-managed forests did not differ from deforestation rates in forests that were not managed by local communities, or in uninhabited national parks.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1152https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1152Wed, 18 May 2016 14:58:54 +0100Collected Evidence: Collected Evidence: Improve soil quality after tree planting (excluding applying fertilizer) One of two randomized, replicated, controlled studies in Australia found that different soil enhancers had mixed effects on tree seedling survival and height, but no effect on tree seedling health. The other found that combinations of soil enhancers did not increase seedling survival, height, diameter or health.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1153https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1153Wed, 18 May 2016 15:12:35 +0100Collected Evidence: Collected Evidence: Water seedlings One replicated, randomized, controlled study in Spain found that watering tree seedlings increased survival during a dry summer but only increased the survival of some species during a wet summer, depending on the habitat. Watering increased or had no effect on seedling emergence depending on habitat and water availability.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1154https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1154Wed, 18 May 2016 15:16:42 +0100Collected Evidence: Collected Evidence: Reduce erosion to increase seedling survival We found no evidence for the effect of reducing erosion on planted trees. '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%2Fwww.conservationevidence.com%2Factions%2F1155https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1155Wed, 18 May 2016 15:25:56 +0100Collected Evidence: Collected Evidence: Apply fungicides to protect seedlings from fungal diseases We found no evidence for the effect of applying fungicides to planted trees. '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%2Fwww.conservationevidence.com%2Factions%2F1156https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1156Wed, 18 May 2016 15:30:17 +0100Collected Evidence: Collected Evidence: Raise awareness amongst the general public through campaigns and public information We found no evidence for the effect of raising awareness amongst the general public through campaigns and public information 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%2Fwww.conservationevidence.com%2Factions%2F1157https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1157Wed, 18 May 2016 15:35:00 +0100Collected Evidence: Collected Evidence: Provide education programmes about forests We found no evidence for the effect of providing education programmes about forests 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%2Fwww.conservationevidence.com%2Factions%2F1158https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1158Wed, 18 May 2016 15:35:55 +0100Collected Evidence: Collected Evidence: Plant a mixture of tree species to enhance the survival and growth of planted trees We found no evidence for the effect of planting a mixture of tree species to enhance the survival and growth of planted trees. '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%2Fwww.conservationevidence.com%2Factions%2F1159https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1159Wed, 18 May 2016 15:37:49 +0100Collected Evidence: Collected Evidence: Infect tree seedlings with mycorrhizae We found no evidence for the effect of inoculating tree seedlings with mycorrhizae. '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%2Fwww.conservationevidence.com%2Factions%2F1160https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1160Wed, 18 May 2016 15:40:20 +0100Collected Evidence: Collected Evidence: Introduce leaf litter to forest stands We found no evidence for the effect of introducing leaf litter to introduce beneficial soil biota on planted trees. '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%2Fwww.conservationevidence.com%2Factions%2F1161https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1161Wed, 18 May 2016 15:41:27 +0100Collected Evidence: Collected Evidence: Transplant trees We found no evidence for the effect of transplanting trees on planted trees. '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%2Fwww.conservationevidence.com%2Factions%2F1162https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1162Wed, 18 May 2016 15:42:27 +0100Collected Evidence: Collected Evidence: Use pioneer plants or crops as nurse plants We found no evidence for the effect of using pioneer plants or crops on planted trees. '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%2Fwww.conservationevidence.com%2Factions%2F1163https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1163Wed, 18 May 2016 15:47:12 +0100Collected Evidence: Collected Evidence: Restore wood pastures (e.g. introducing grazing) One replicated paired study in Sweden found that partial harvesting in abandoned wood pastures increased tree seedling density, survival and growth.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1164https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1164Wed, 18 May 2016 15:51:35 +0100Collected Evidence: Collected Evidence: Prevent damage from strong winds We found no evidence of the effects of preventing damage from strong winds 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%2Fwww.conservationevidence.com%2Factions%2F1165https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1165Thu, 19 May 2016 08:14:01 +0100Collected Evidence: Collected Evidence: Remove nitrogen and phosphorus using harvested products We found no evidence of the effects of removing nitrogen and phosphorus using harvested products 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%2Fwww.conservationevidence.com%2Factions%2F1166https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1166Thu, 19 May 2016 08:54:56 +0100Collected Evidence: Collected Evidence: Maintain/create buffer zones One site comparison study in Australia found that a forest edge protected by a planted buffer strip had higher canopy cover and lower stem density, but similar understory species richness to an unbuffered forest edge.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1168https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1168Thu, 19 May 2016 08:58:20 +0100Collected Evidence: Collected Evidence: Provide legal protection of forests from development We found no evidence for the effects of providing legal protection of forests from 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%2Fwww.conservationevidence.com%2Factions%2F1169https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1169Thu, 19 May 2016 09:37:01 +0100Collected Evidence: Collected Evidence: Create managed paths/signs to contain disturbance We found no evidence for the effects of creating managed paths/signs to contain disturbance 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%2Fwww.conservationevidence.com%2Factions%2F1170https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1170Thu, 19 May 2016 09:40:40 +0100Collected Evidence: Collected Evidence: Re-route paths, control access or close paths We found no evidence for the effects of re-routing paths, controlling access or closing paths 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%2Fwww.conservationevidence.com%2Factions%2F1171https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1171Thu, 19 May 2016 09:43:03 +0100Collected Evidence: Collected Evidence: Use signs to prevent fire We found no evidence for the effects of using signs to prevent fires 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%2Fwww.conservationevidence.com%2Factions%2F1172https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1172Thu, 19 May 2016 09:45:45 +0100Collected Evidence: Collected Evidence: Adopt ecotourism We found no evidence for the effects of adopting ecotourism 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%2Fwww.conservationevidence.com%2Factions%2F1173https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1173Thu, 19 May 2016 09:46:59 +0100Collected Evidence: Collected Evidence: Use herbicides to remove invasive plant species One replicated, randomized, controlled study in the USA found no effect of invasive plant control using herbicide on the total native plant species richness.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1314https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1314Fri, 23 Sep 2016 14:49:03 +0100
What Works 2021 cover

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, mammals, forests, peatland and control of freshwater invasive species. More are in progress.

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