Conservation Evidence: Evidence Data

Collected Evidence: Collected Evidence: Thin trees after wildfire Five replicated, controlled studies examined the effects of thinning trees in burnt forest areas. Two studies in Spain found that thinning increased plant species richness. One in Canada found that it increased the cover of aspen saplings. One study in the USA found thinning decreased plant biomass and one in Israel found it decreased mortality of pine seedlings. One paired-site study in Canada found that logging after wildfire decreased species richness and diversity of mosses. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1234https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1234Thu, 02 Jun 2016 14:31:10 +0100Collected Evidence: Collected Evidence: Plant trees after wildfire We found no evidence for the effects of planting trees after wildfire 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%2F1235https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1235Fri, 03 Jun 2016 08:29:53 +0100Collected Evidence: Collected Evidence: Sow tree seeds after wildfire Three studies (including one replicated, randomized, controlled study) in the USA examined the effect of sowing herbaceous plant seeds in burnt forest areas. One found it decreased the number and cover of native species and one found it decreased the density of tree seedlings. All three found no effect of seeding on total plant cover or species richness. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1236https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1236Fri, 03 Jun 2016 08:34:24 +0100Collected Evidence: Collected Evidence: Remove burned trees One replicated, controlled study in Israel1 found that removing burned trees increased total plant species richness. One replicated, controlled study in Spain2 found that removal increased the cover and species richness of some plant species. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1237https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1237Fri, 03 Jun 2016 08:52:10 +0100