Conservation Evidence: Evidence Data

Collected Evidence: Collected Evidence: Use fertilizer Six of eight studies (including five replicated, randomized, controlled) in the USA, Finland, Brazil, Australia and Switzerland found that applying fertilizer increased total plant cover, understory plant biomass , size of young trees, relative biomass of grasses (out of total biomass of all plants) and cover of plant species that were seeded artificially. Five of the studies found no effect of applying fertilizer on plant biomass, plant cover, seedling abundance, tree growth and tree seedling diversity. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1248https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1248Fri, 03 Jun 2016 11:30:08 +0100Collected Evidence: Collected Evidence: Add lime to the soil to increase fertility One replicated, randomized controlled study in the USA found that adding lime increased vegetation cover. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1249https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1249Fri, 03 Jun 2016 12:48:10 +0100Collected Evidence: Collected Evidence: Add organic matter One replicated, randomized, controlled study in Brazil found that leaf litter addition increased species richness of young trees. One replicated, controlled study in Costa Rica found leaf litter addition decreased young tree density in artificial forest gaps. Both studies found no effect of litter addition on the density of tree regenerations under intact forest canopy. One replicated, controlled study in Portugal found that adding plant material to the soil surface increased total plant cover. One replicated, controlled study in the USA found mixed effects on cover depending on understory plant group. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1250https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1250Fri, 03 Jun 2016 12:51:42 +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: Enhance soil compaction Three studies (including two replicated, randomized, controlled) in Canada and the USA found that soil compaction decreased tree regeneration height and density. Two of the studies found it increased understory plant cover and density, while one found it decreased understory plant species richness. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1253https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1253Fri, 03 Jun 2016 14:05:56 +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