Conservation Evidence: Evidence Data

Collected 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: 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: Use prescribed fire to remove invasive plant species We found no evidence for the effects of using prescribed fire to remove invasive plant species 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%2F1196https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1196Thu, 19 May 2016 13:11:33 +0100Collected Evidence: Collected Evidence: Use rotational grazing to restore oak savannas We found no evidence for the effect of using rotational grazing to restore oak savannas. '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%2F1202https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1202Thu, 19 May 2016 13:27:07 +0100Collected Evidence: Collected Evidence: Use wire fences within grazing areas to exclude livestock from specific forest sections Four of eight studies (including two replicated, randomized, controlled studies) in Argentina, Australia, Belgium, Israel, New Zealand, Spain, West Africa and the USA found that excluding livestock using wire fences increased biomass , species richness, density and cover of understory plants. The other four studies found mixed effects or no effect of livestock exclusion on understory plants. Three of four studies (including one replicated, randomized, controlled study) in Mexico, Kenya, Israel and Panama found that excluding livestock using wire fences increased the size and density of regenerating trees and the number of regenerating trees. One study found livestock exclusion decreased tree density but not tree size. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1205https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1205Thu, 19 May 2016 13:44:09 +0100Collected Evidence: Collected Evidence: Use shelterwood harvest instead of clearcutting Three replicated, controlled studies in Sweden and the USA found that shelterwood harvesting resulted in higher plant diversity, lower grass cover and higher density of tree species compared with clearcutting. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1214https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1214Fri, 20 May 2016 13:48:37 +0100Collected Evidence: Collected Evidence: Use summer instead of winter harvesting One replicated study in the USA found no effect of logging season on plant species richness and diversity. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1216https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1216Fri, 20 May 2016 14:06:18 +0100Collected Evidence: Collected Evidence: Use prescribed fire: effects on mature trees Four of eight studies (including two replicated, randomized, controlled studies) from the USA found that prescribed fire decreased tree cover, density and diversity. One study found it increased tree cover and three found no effect or mixed effects of prescribed fire on cover and density of trees. Seven studies from the USA (including one replicated, randomized, controlled study) found that prescribed fire increased tree mortality. One of three studies from the USA (including one replicated, controlled study) found that prescribed fire increased tree size while two found no effect of prescribed fire on tree size. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1217https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1217Fri, 20 May 2016 14:09:36 +0100Collected Evidence: Collected Evidence: Use prescribed fire: effects on young trees Five of 15 studies (including four replicated, randomized, controlled studies) from Canada, France and the USA found that prescribed fire increased the density and biomass of young trees. Two studies found that fire decreased new tree density. Eight found no effect or mixed effects depending on the tree species, location and fire frequency. Two of the above studies found mixed effects of prescribed fire on species diversity of young trees depending on the location. Two replicated, controlled studies from the USA found mixed effects of prescribed fire on the survival of young trees. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1220https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1220Fri, 20 May 2016 14:45:40 +0100Collected Evidence: Collected Evidence: Use prescribed fire: effect on understory plants Eight of 22 studies (including seven replicated, randomized, controlled studies) from the USA, Australia and Canada found that prescribed fire increased the cover, density and biomass of understory plants. Six of the studies found it decreased plant cover. Eight found no effect or mixed effects on cover and density of understory plants. Fourteen of 24 studies (including ten replicated, randomized, controlled studies) from the USA, Australia, France and West Africa found that prescribed fire increased species richness and diversity of understory plants. One study found that it decreased species richness. Nine found no effect or mixed effects on species richness and diversity of understory plants. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1221https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1221Mon, 23 May 2016 08:21:42 +0100Collected Evidence: Collected Evidence: Use shelterwood harvesting Six of seven studies (including five replicated, controlled studies) in Australia, Iran, Nepal and the USA found that shelterwood harvesting increased abundance, species richness and diversity of understory plants, as well as the growth and survival rate of young trees. One study found shelterwood harvesting decreased plant species richness and abundance. One study found no effect of shelterwood harvest on tree abundance. One replicated, controlled study in Canada found no effect of shelterwood harvest on red oak acorn production. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1223https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1223Mon, 23 May 2016 09:34:29 +0100Collected Evidence: Collected Evidence: Use thinning followed by prescribed fire Three of six studies (including one replicated, randomized, controlled study) in the USA found that thinning followed by prescribed burning increased cover and abundance1 of understory plants as well as the density of deciduous trees. One study found that thinning then burning decreased trees density and species richness. Three studies found no effect or mixed effects of thinning followed by burning on tree growth rate and density of young trees. One replicated, controlled study Australia found no effect of thinning followed by burning on the genetic diversity of black ash. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1227https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1227Mon, 23 May 2016 10:38:49 +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%2Fwww.conservationevidence.com%2Factions%2F1230https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1230Mon, 23 May 2016 10:55:52 +0100Collected Evidence: Collected Evidence: Use selective thinning after restoration planting One replicated, paired sites study in Canada found that selective thinning after restoration planting conifers increased the abundance of herbaceous species and decreased the abundance of trees. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1238https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1238Fri, 03 Jun 2016 09:16:54 +0100Collected Evidence: Collected Evidence: Water plants to preserve dry tropical forest species One replicated, controlled study in Hawaii found that watering plants increased the abundance and biomass of forest plants. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1242https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1242Fri, 03 Jun 2016 09:55:53 +0100Collected Evidence: Collected Evidence: Use soil scarification or ploughing to enhance germination Two studies (including one replicated, randomized, controlled study) in Portugal and the USA found that ploughing increased the cover and diversity of understory plants. Two of three studies (including two replicated, randomized, controlled) in Canada and Brazil found that ploughing increased, and one found it decreased the density of young trees. Two replicated, controlled studies in Ethiopia and Sweden found mixed effects of tilling on different tree species. One replicated, before-and-after trial in Finland found that ploughing decreased the cover of plants living on wood surface. One replicated, controlled study in the USA found that ploughing did not decrease the spreading distance and density of invasive grass seedlings. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1251https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1251Fri, 03 Jun 2016 13:09:10 +0100Collected Evidence: Collected Evidence: Use soil disturbance to enhance germination (excluding scarification or ploughing) Two replicated, controlled studies from Canada and Finland found that disturbance of the forest floor decreased understory vegetation cover. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1252https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1252Fri, 03 Jun 2016 13:50:07 +0100Collected Evidence: Collected Evidence: Use prescribed fire after tree planting Two of four studies (including one replicated, randomized, controlled study) in Finland, France and the USA found that using prescribed fire after replanting increased the survival and sprouting rate of planted trees. One study found fire decreased planted tree size and one found no effect of prescribed fire on the size and survival rate of planted trees. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1255https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1255Fri, 03 Jun 2016 15:33:52 +0100Collected Evidence: Collected Evidence: Use weed mats to protect planted trees One replicated, controlled study in Hong Kong found no effect of using weed mats on thick-leaved oak seedling height. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1267https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1267Fri, 10 Jun 2016 08:53:49 +0100Collected Evidence: Collected Evidence: Use tree guards or shelters to protect planted trees One replicated, randomized, controlled study in the USA found that using light but not dark coloured plastic tree shelters increased the survival rate of planted tree seedlings. One replicated, controlled study in Hong Kong found that tree guards increased tree height after 37 but not 44 months. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1268https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1268Fri, 10 Jun 2016 09:07:23 +0100Collected Evidence: Collected Evidence: Use shading for planted trees One replicated, controlled study in Panama found that shading increased the survival rate of planted native tree seedlings. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1269https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1269Fri, 10 Jun 2016 09:19:59 +0100Collected Evidence: Collected Evidence: Use vegetation removal together with mechanical disturbance to the soil Two studies (including one replicated, randomized, controlled study) in Portugal and France found that vegetation removal together with mechanical disturbance of the soil increased the cover and diversity of understory plants. One of the studies found it also decreased understory shrub cover. One replicated, randomized, controlled study in France found that vegetation removal together with mechanical disturbance of the soil increased the density of young trees. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1274https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1274Tue, 28 Jun 2016 10:55:55 +0100