Collected Evidence: Collected Evidence: Add fertilizer to soil (alongside planting/seeding) A replicated, controlled study in Iceland found that adding fertilizer and sowing seeds increased cover of shrubs and trees in a majority of cases. The same study showed an increase in vegetation cover in two of three cases. One controlled study in the USA found that adding fertilizer increased the biomass of four-wing saltbush in a majority of cases. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F1704https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F1704Mon, 23 Oct 2017 11:35:39 +0100Collected Evidence: Collected Evidence: Add gypsum to soil (alongside planting/seeding) One randomized, controlled study in South Africa found that adding gypsum to soils and sowing seeds increased survival of seedlings for one of two species Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F1708https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F1708Mon, 23 Oct 2017 12:05:42 +0100Collected Evidence: Collected Evidence: Add inorganic fertilizer (before/after planting) Nine studies evaluated the effects, on peatland vegetation, of adding inorganic fertilizer to areas planted with peatland plants. Eight studies were in bogs (two being restored as fens). One study was in a tropical peat swamp nursery. Survival (2 studies): Two replicated, randomized, paired, controlled studies in bogs in Canada examined the effect, on plant survival, of adding inorganic fertilizer to areas planted with peatland plants. One study reported that fertilizer increased survival of two planted tree species. The other study found that fertilizer had no effect on three planted tree species and reduced survival of one. Growth (6 studies): Five studies (three replicated, randomized, paired, controlled) in bogs in the UK, Germany and Canada found that fertilizer typically increased growth of planted mosses, herbs or trees. However, for some species or in some conditions, fertilizer had no effect on growth. One replicated, randomized, controlled, before-and-after study in a nursery in Indonesia found that fertilizer typically had no effect on growth of peat swamp tree seedlings. Cover (3 studies): Three replicated, randomized, paired, controlled studies examined the effect, on vegetation cover, of fertilizing areas planted with peatland plants. One study in a bog in Canada found that fertilizer increased total vegetation, vascular plant and bryophyte cover. Another study in a bog (being restored as a fen) in Canada found that fertilizer increased sedge cover but had no effect on total vegetation cover, total herb cover or Sphagnum moss cover. One study in a bog in New Zealand reported that fertilizer typically increased cover of a sown shrub and rush, but this depended on the chemical in the fertilizer and preparation of the peat. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F1826https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F1826Tue, 28 Nov 2017 08:50:44 +0000Collected Evidence: Collected Evidence: Add fresh peat to peatland (before planting) One study evaluated the effects, on peatland vegetation, of adding fresh peat before planting peatland plants. The study was in a bog. Cover (1 study): One replicated, controlled, before-and-after study in a bog New Zealand reported that plots amended with fine peat supported higher cover of two sown plant species than the original (tilled) bog surface. However, for one species fertilization cancelled out this effect. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F1837https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F1837Tue, 28 Nov 2017 08:54:45 +0000Collected Evidence: Collected Evidence: Adapt bat roost structures to buffer against temperature extremes We found no studies that evaluated the effects of adapting bat roost structures to buffer against temperature extremes on bat populations. ‘We found no studies’ means that we have not yet found any studies that have directly evaluated 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%2F2024https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2024Wed, 05 Dec 2018 18:14:05 +0000Collected Evidence: Collected Evidence: Add chemicals or minerals to sediments to remove or neutralise pollutants Two studies examined the effects of adding chemicals or minerals to sediments to remove or neutralise pollutants on subtidal benthic invertebrate populations. Both studies evaluated the use of coal ash in Hiroshima Bay (Japan).   COMMUNITY RESPONSE (1 STUDY) Overall richness/diversity (1 study): One controlled, before-and-after study in Hiroshima Bay found that adding coal ash increased invertebrate species richness in winter but not summer compared to untreated sites. POPULATION RESPONSE (2 STUDIES) Overall abundance (2 studies): One controlled, before-and-after study in Hiroshima Bay found that adding coal ash increased invertebrate abundance in winter but not summer compared to untreated sites. One controlled study in Hiroshima Bay found that one of two types of coal ash increased combined invertebrate and fish abundance, but not biomass. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2176https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2176Tue, 22 Oct 2019 12:27:40 +0100Collected Evidence: Collected Evidence: Add chemicals or minerals to sediment to remove or neutralize pollutants We found no studies that evaluated the effects of adding chemicals or minerals to sediment to remove or neutralize pollutants on marine and freshwater mammal populations. ‘We found no studies’ means that we have not yet found any studies that have directly evaluated 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%2F2864https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2864Mon, 08 Feb 2021 11:25:33 +0000Collected Evidence: Collected Evidence: Add clean water to reduce pollutionWe found no studies that evaluated the effects, on vegetation in marshes or swamps, of diverting clean water into them to reduce pollution.   ‘We found no studies’ means that we have not yet found any studies that have directly evaluated 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%2F3150https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3150Mon, 05 Apr 2021 15:46:25 +0100Collected Evidence: Collected Evidence: Add below-ground organic matter: freshwater marshesWe found no studies that evaluated the effects, on vegetation, of adding below-ground organic matter to restore or create freshwater marshes.   ‘We found no studies’ means that we have not yet found any studies that have directly evaluated 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%2F3243https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3243Sat, 10 Apr 2021 12:32:54 +0100Collected Evidence: Collected Evidence: Add below-ground organic matter: brackish/salt marshes One study evaluated the effects, on vegetation, of adding below-ground organic matter to restore or create brackish/salt marshes. The study was in the USA. VEGETATION COMMUNITY   VEGETATION ABUNDANCE Individual species abundance (1 study): One replicated, randomized, controlled, before-and-after study in a salt marsh in the USA found that plots amended with alginate contained a greater density of smooth cordgrass Spartina alterniflora than unamended plots after 6–52 weeks. However, amended and unamended plots contained similar smooth cordgrass biomass when it was sampled after 52 weeks. VEGETATION STRUCTURE Height (1 study): One replicated, randomized, controlled, before-and-after study in a salt marsh in the USA found that amending plots with alginate had no significant effect on smooth cordgrass height in the first 16 weeks after intervention, but that amended plots contained taller smooth cordgrass than unamended plots after 28–52 weeks. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3244https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3244Sat, 10 Apr 2021 12:33:05 +0100Collected Evidence: Collected Evidence: Add below-ground organic matter: freshwater swampsWe found no studies that evaluated the effects, on vegetation, of adding below-ground organic matter to restore or create freshwater swamps.   ‘We found no studies’ means that we have not yet found any studies that have directly evaluated 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%2F3245https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3245Sat, 10 Apr 2021 12:33:22 +0100Collected Evidence: Collected Evidence: Add below-ground organic matter: brackish/saline swampsWe found no studies that evaluated the effects, on vegetation, of adding below-ground organic matter to restore or create brackish/saline swamps.   ‘We found no studies’ means that we have not yet found any studies that have directly evaluated 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%2F3246https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3246Sat, 10 Apr 2021 12:33:31 +0100Collected Evidence: Collected Evidence: Add cover other than mulchWe found no studies that evaluated the effects, on vegetation, of using cover other than mulch to restore/create marshes or swamps.   ‘We found no studies’ means that we have not yet found any studies that have directly evaluated 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%2F3251https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3251Sat, 10 Apr 2021 13:03:16 +0100Collected Evidence: Collected Evidence: Add below-ground organic matter before/after planting non-woody plants: freshwater wetlands Seven studies evaluated the effects, on vegetation, of adding below-ground organic matter to freshwater wetlands planted with emergent, non-woody plants. All seven studies were in the USA. Two of the studies were in a greenhouse. VEGETATION COMMUNITY Overall richness/diversity (1 study): One replicated study of marshes alongside a stream in the USA found that adding compost before planting wetland herbs typically reduced overall plant species richness over the following three growing seasons. Richness was negatively related to the amount of soil organic matter in plots. VEGETATION ABUNDANCE Overall abundance (1 study): One replicated study of marshes alongside a stream in the USA found that adding compost before planting wetland herbs had no significant effect on total vegetation biomass after three growing seasons. Biomass was not significantly related to the amount of soil organic matter in plots. Characteristic plant abundance (1 study): One replicated, randomized, paired, controlled, before-and-after study in an experimental wet basin in the USA found that adding sawdust to plots before sowing a mixture of target sedge meadow species had no significant effect on the density of target species overall or target grass-like species. Adding sawdust sometimes affected the density of target forbs, depending on the presence/diversity of a nurse crop. Individual species abundance (2 studies): Two replicated, randomized, paired, controlled studies in wetlands in the USA quantified the effect of this action on the abundance of individual plant species. One study found that incorporating woodchips into soil mounds before planting tussock sedge Carex stricta reduced total tussock sedge cover after two growing seasons. The other study reported varying effects of sawdust addition on the abundance of individual plant species, depending on factors such as the species and presence/diversity of a nurse crop. VEGETATION STRUCTURE Individual plant size (4 studies): Three replicated, controlled studies (one also paired) in the USA found that mixing compost into the substrate before planting tussock sedge Carex stricta seedlings typically increased the biomass and/or number of shoots they developed over 2–3 months. However, in one of the studies, compost typically had no significant effect on top of other soil amendments. One replicated, randomized, paired, controlled study in a wetland in the USA found that incorporating woodchips into soil mounds had no significant effect on the biomass of planted tussock sedge Carex stricta, over two growing seasons. OTHER Germination/emergence (1 study): One replicated, randomized, paired, controlled study in an experimental wet basin in the USA found that seeds of mixed sedge meadow species had a similar germination rate, over 16 weeks after sowing, in plots with or without added sawdust. Survival (2 studies): One replicated, randomized, controlled study in an excavated wetland in the USA found that planted lurid sedge Carex lurida tubers had a higher survival rate, after one year, in plots that had been amended with leaf litter than in unamended plots. One replicated, randomized, paired, controlled study in a wetland in the USA found that incorporating woodchips into soil mounds increased survival of planted tussock sedge Carex stricta in a drier area, but reduced its survival in a wetter area. Growth (1 study): One replicated, randomized, paired, controlled study in a wetland in the USA found that incorporating woodchips into soil mounds had no significant effect on the growth rate of planted tussock sedge Carex stricta, over two growing seasons. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3308https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3308Sun, 11 Apr 2021 09:50:48 +0100Collected Evidence: Collected Evidence: Add below-ground organic matter before/after planting non-woody plants: brackish/saline wetlands Six studies evaluated the effects, on vegetation, of adding below-ground organic matter to brackish/saline wetlands planted with emergent, non-woody plants. Five studies were in the USA and one was in China. Two studies were in the same marsh, but used different experimental set-ups. VEGETATION COMMUNITY   VEGETATION ABUNDANCE Individual species abundance (5 studies): Three replicated, randomized, controlled studies in the USA found that adding organic matter before/after planting cordgrasses Spartina spp. typically had no significant effect on cordgrass abundance (biomass and/or density) after 1–2 growing seasons. One replicated, paired, controlled study in an estuary in the USA found that mixing kelp compost into the sediment before planting California cordgrass Spartina foliosa increased its density, three growing seasons later. One replicated, controlled, before-and-after study in an estuary in China found that mixing reed debris into the sediment before sowing seablite Suaeda salsa increased its biomass, but not its density, five months later. VEGETATION STRUCTURE Individual plant size (1 study): One replicated, randomized, paired, controlled study in an estuary in the USA found that tilling compost into plots before planting salt marsh vegetation typically increased the overall size of plants surviving after 1–2 growing seasons. Size was reported as a combination of height and lateral spread. Height (5 studies): Four replicated, controlled studies in the USA and China found that adding organic matter before/after introducing salt marsh plants (cordgrasses Spartina spp. or seablite Suaeda salsa) had no significant effect on their height after 1–2 growing seasons. One replicated, paired, controlled study in an estuary in the USA found that mixing kelp compost into the sediment before planting California cordgrass Spartina foliosa increased its height, three growing seasons later. OTHER Survival (1 study): One replicated, randomized, paired, controlled study in an estuary in the USA found that plots amended with kelp compost supported a higher survival rate of planted salt marsh vegetation over 1–2 growing seasons, with a similar but typically insignificant trend for survival rates of individual species. Growth (1 study): One replicated, randomized, controlled study in a greenhouse in the USA found that adding alginate after planting cordgrasses had no significant effect on the average number of shoots per plant, nine weeks later. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3309https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3309Sun, 11 Apr 2021 09:50:58 +0100Collected Evidence: Collected Evidence: Add below-ground organic matter before/after planting trees/shrubs: freshwater wetlands One study evaluated the effects, on vegetation, of adding below-ground organic matter to freshwater wetlands planted with trees/shrubs. The study was in the USA. VEGETATION COMMUNITY Community composition (1 study): One replicated, randomized, paired, controlled study in a created wetland in the USA found that amongst plots planted with tree seedlings, those amended with large amounts compost contained a plant community characteristic of drier conditions, three years later, than the community in unamended plots. The lowest compost dose had no significant effect on this outcome. Overall richness/diversity (1 study): The same study found that amongst plots planted with tree seedlings, those amended with a large amount of compost had lower plant species richness and diversity, three years later, than unamended plots. Lower compost doses had no significant effect on either outcome. VEGETATION ABUNDANCE Overall abundance (1 study): One replicated, randomized, paired, controlled study in a created wetland in the USA found that amongst plots planted with tree seedlings, those amended with compost supported a similar overall vegetation biomass, three years later, to unamended plots. VEGETATION STRUCTURE Individual plant size (1 study): One replicated, randomized, paired, controlled study in a created wetland in the USA found that birch Betula saplings were larger, three years after planting seedlings, in plots amended with large amounts of compost than in unamended plots. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3310https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3310Sun, 11 Apr 2021 09:51:11 +0100Collected Evidence: Collected Evidence: Add below-ground organic matter before/after planting trees/shrubs: brackish/saline wetlands One study evaluated the effects, on vegetation, of adding below-ground organic matter to brackish/saline wetlands planted with trees/shrubs. The study was in Brazil. VEGETATION COMMUNITY   VEGETATION ABUNDANCE   VEGETATION STRUCTURE   OTHER Survival (1 study): One replicated, randomized, controlled study in a coastal swamp in Brazil reported that adding manure to plots planted with tree seedlings had mixed effects on their survival over three years, depending on the species of tree and dose of manure. Growth (1 study): The same study reported that adding manure to plots planted with tree seedlings had mixed effects on their growth over three years, depending on the species of tree and dose of manure. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3311https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3311Sun, 11 Apr 2021 09:51:23 +0100Collected Evidence: Collected Evidence: Add cover other than mulch before/after planting non-woody plants: freshwater wetlands One study evaluated the effects, on vegetation, of adding cover other than mulch to freshwater wetlands planted with emergent, non-woody plants. The study was in Australia. VEGETATION COMMUNITY   VEGETATION ABUNDANCE Tree/shrub abundance (1 study): One replicated, randomized, paired, controlled study in floodplain swamps in Australia found that covering plots with plastic or jute mats before planting native understory herbs increased their overall cover, one year later. Individual species abundance (1 study): The same study found that covering plots with plastic or jute mats before planting native understory herbs reduced the cover of two problematic herb species, one year later. VEGETATION STRUCTURECollected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3316https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3316Sun, 11 Apr 2021 12:19:16 +0100Collected Evidence: Collected Evidence: Add cover other than mulch before/after planting non-woody plants: brackish/saline wetlandsWe found no studies that evaluated the effects, on vegetation, of adding cover other than mulch to brackish/saline wetlands planted with emergent, non-woody plants.   ‘We found no studies’ means that we have not yet found any studies that have directly evaluated 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%2F3317https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3317Sun, 11 Apr 2021 12:19:32 +0100Collected Evidence: Collected Evidence: Add cover other than mulch before/after planting trees/shrubs: freshwater wetlands One study evaluated the effects, on vegetation, of adding cover other than mulch to freshwater wetlands planted with trees/shrubs. The study was in Australia. VEGETATION COMMUNITY   VEGETATION ABUNDANCE Tree/shrub abundance (1 study): One replicated, randomized, paired, controlled study in floodplain swamps in Australia found that covering plots with plastic or jute mats before planting native shrubs had no significant effect on their overall cover, one year later. Individual species abundance (1 study): The same study found that covering plots with plastic or jute mats before planting swamp gum Eucalyptus camphora seedlings had no significant effect on swamp gum cover, one year later. Covering plots with mats also reduced cover of two problematic herb species. VEGETATION STRUCTURE                                          Height (1 study): One replicated, randomized, paired, controlled study in floodplain swamps in Australia found that planted swamp gum Eucalyptus camphora seedlings reached a similar height, after one year, in covered and uncovered plots. Covers were plastic or jute mats. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3318https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3318Sun, 11 Apr 2021 12:19:45 +0100Collected Evidence: Collected Evidence: Add cover other than mulch before/after planting trees/shrubs: brackish/saline wetlands One study evaluated the effects, on vegetation, of adding cover other than mulch to brackish/saline wetlands planted with trees/shrubs. The study was in Mexico. VEGETATION COMMUNITY   VEGETATION ABUNDANCE   VEGETATION STRUCTURE   OTHER Growth (1 study): One controlled study on a sandflat in Mexico reported that planted black mangrove Avicennia germinans seedlings grew more in height, over six months, when shaded with black mesh than when not shaded. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3319https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3319Sun, 11 Apr 2021 12:19:58 +0100Collected Evidence: Collected Evidence: Add charcoal to soil before seeding/planting One study examined the effects of adding charcoal to soil before seeding/planting on grassland vegetation. The study was in the Netherlands. VEGETATION COMMUNITY (0 STUDIES) VEGETATION ABUNDANCE (1 STUDY) Overall abundance (1 study): One replicated, randomized, paired, controlled study in the Netherlands found that adding charcoal to soil before sowing seeds did not alter overall plant biomass. Grass abundance (1 study): One replicated, randomized, paired, controlled study in the Netherlands found that adding charcoal to soil before sowing seeds did not alter grass cover. Forb abundance (1 study): One replicated, randomized, paired, controlled study in the Netherlands found that adding charcoal to soil before sowing seeds increased the cover of legumes but did not alter the cover of other forbs. VEGETATION STRUCTURE (0 STUDIES)Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3422https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3422Fri, 25 Jun 2021 16:43:15 +0100Collected Evidence: Collected Evidence: Add fertilizer to soil before or after seeding/planting Seventeen studies examined the effects of adding fertilizer to soil before or after seeding/planting on grassland vegetation. Nine studies were in North America, six studies were in Europe, one study was in China, and one was in Brazil. VEGETATION COMMUNITY (3 STUDIES) Overall richness/diversity (3 studies): One replicated, randomized, paired, controlled study in Spain found that adding fertilizer alongside sowing of non-native plant seeds increased plant diversity in 40% of cases. Two replicated, controlled studies in Spain and Italy found that plant species richness and diversity were not altered by organic matter or fertilizer addition alongside seeding. VEGETATION ABUNDANCE (13 STUDIES) Overall abundance (8 studies): Six of nine replicated, controlled studies (five of which were also randomized and paired) in North America and Europe found that adding fertilizer alongside sowing or planting increased vegetation cover in all or some cases. Three studies found no change in vegetation cover or plant density. Characteristic plant abundance (1 study): One replicated, randomized, paired, controlled study in the UK found that adding fertilizer and sowing seeds increased the abundance of specialist grassland species. Sown/planted species abundance (3 studies): Two replicated, randomized, controlled studies in the USA found that adding fertilizer after sowing seeds did not alter the density of sown forbs. One replicated, randomized, paired, controlled study in the USA found that adding fertilizer after sowing seeds increased the cover but not the density of four sown plant species. Grass abundance (1 study): One replicated, controlled study in the USA found that adding fertilizer and sowing seeds increased the biomass of three native grass species. VEGETATION STRUCTURE (0 STUDIES) OTHER (4 STUDIES) Germination/Emergence (1 study): One replicated, randomized, paired, controlled study in China found that adding fertilizer and sowing seeds did not increase seedling emergence or density. Survival (3 studies): Three replicated, controlled, paired studies (one of which was randomized) in the UK, China and Brazil found that adding fertilizer alongside sowing seeds did not alter the survival of seedlings. Growth (1 study): One replicated, randomized, controlled study in the USA found that adding fertilizer after planting native prairie plants reduced the diameter of prairie lupine plants and did not alter the growth of six other plant species. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3427https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3427Mon, 28 Jun 2021 10:37:44 +0100Collected Evidence: Collected Evidence: Add carbon to soil before or after seeding/planting Two studies examined the effects of adding carbon to soil before or after seeding/planting on grassland vegetation. Both studies were in the USA. VEGETATION COMMUNITY (0 STUDIES) VEGETATION ABUNDANCE (2 STUDIES) Sown/planted species abundance (2 studies): Two replicated, randomized, controlled studies in the USA found that adding carbon to soil after sowing seeds either reduced or did not alter the density of sown forb species. VEGETATION STRUCTURE (0 STUDIES)Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3433https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3433Thu, 08 Jul 2021 17:12:59 +0100Collected Evidence: Collected Evidence: Add chemicals or minerals to sediment to remove or neutralize pollutants We found no studies that evaluated the effects on reptile populations of adding chemicals or minerals to sediment to remove or neutralize pollutants. ‘We found no studies’ means that we have not yet found any studies that have directly evaluated 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%2F3562https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3562Wed, 08 Dec 2021 14:50:43 +0000
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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