Conservation Evidence: Evidence Data

Collected Evidence: Collected Evidence: Change the timing of ploughingTwo replicated site comparison studies from Denmark and Norway (one also randomized) found reduced soil loss and nitrate leaching when ploughing was delayed until spring. SOIL TYPES COVERED: sandy, sandy-loam, silty-clay loam. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F712https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F712Wed, 29 May 2013 10:39:46 +0100Collected Evidence: Collected Evidence: Change the timing of manure applicationOne controlled, randomized, replicated site comparison study from the UK found less nitrate was lost from the soil when manure application was delayed from autumn until December or January. SOIL TYPE COVERED: sandy-loam. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F893https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F893Mon, 30 Sep 2013 11:16:56 +0100Collected Evidence: Collected Evidence: Change tillage practicesBiodiversity loss: Eleven studies from Canada, Europe, Mexico, or the USA measured effects of reduced tillage on soil animals or microbes. Of these, four (including three replicated trials (three also randomized and one also controlled)) found more microbes, more species of earthworm, or higher microbe activity under reduced tillage. One replicated trial found increased numbers of soil animals and earthworms under reduced tillage. One controlled, replicated trial found mixed effects on microbe diversity depending on time of sampling. Two, (including one controlled, replicated trial) found no effect of reduced tillage on earthworm activity or microbe activity. Compaction: Five studies from Australia, Canada, and Europe measured the effect of controlled traffic and reduced tillage on compacted soils. Of these, two (including one before-and-after trial and one replicated trial) found reduced compaction and subsequent effects (reduced water runoff, for example) under controlled traffic, and one also found that crop yields increased under no-tillage. Three replicated trials, including one site comparison study, found higher compaction under reduced tillage. Drought: Three replicated trials from Europe and India (one also randomized) found the size of soil cracks decreased, and ability of soil to absorb water and soil water content increased with conventional ploughing and sub-soiling. Erosion: Nine replicated trials from Brazil, Europe, India, Nigeria and the USA, and one review showed mixed results of tillage on soil erosion. Seven trials (one also controlled and randomized) showed reduced soil loss and runoff under reduced tillage compared to conventional ploughing. One trial showed no differences between tillage systems, but demonstrated that across-slope cultivation reduced soil loss compared to up-and-downslope cultivation. Two trials showed that no-tillage increased soil loss in the absence of crop cover. Soil organic carbon: Twelve studies from Australia, Canada, China, Europe, Japan and the USA compared the effect of no-tillage and conventionally tilled systems on soil organic carbon. All (including two randomized, five replicated, two randomized, replicated, and one controlled, randomized, replicated) found higher soil organic carbon in soils under a no-tillage or reduced tillage system compared to conventionally tilled soil. One review showed that no-tillage with cover cropping and manure application increases soil organic carbon. One randomized, replicated trial from Spain found greater soil organic carbon in conventionally tilled soil. One replicated trial from Canada found no effect of tillage on soil carbon. Soil organic matter: Fifteen studies from Canada, China, Europe, Morocco, and the USA measured effects of reduced tillage on soil organic matter content and nutrient retention. Of these, eight studies (including four replicated (two also randomized), two site comparisons (one also replicated) and one controlled) found maintained or increased soil organic matter and improved soil structure under reduced tillage. Four trials (including two replicated and two site comparison studies) found higher nutrient retention under reduced tillage. One controlled, replicated trial found less carbon and nitrate in no-till compared to conventionally tilled soil, but conventionally tilled soil lost more carbon and nitrate. One controlled, randomized, replicated trial and one replicated trial found mixed effects of reduced tillage on soil nitrogen levels. Yield: One replicated study from Canada found lower yields under minimum or no-tillage compared to conventional tillage, and one controlled, randomized, replicated study from the USA found higher yields when subsoiling was done. One randomized, replicated study from Portugal found no effect of tillage treatment on yield. SOIL TYPES COVERED: anthrosol, calcareous silt loam, chalky, clay, clay loam, fine sandy loam, loam, loamy-clay, loam - sandy loam, loam – silt-loam, loamy sand, loamy silt, non-chalky clay, sandy, sandy clay loam, sandy loam, sandy silt-loam, silt loam, silty, silty-clay, silty clay loam, silty loam.Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F906https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F906Wed, 02 Oct 2013 11:37:18 +0100Collected Evidence: Collected Evidence: Change timing of building work One study evaluated the effects of changing the timing of building work on bat populations. The study was in Ireland. COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (0 STUDIES) BEHAVIOUR (1 STUDY) Use (1 study): One before-and-after study in Ireland found that carrying out roofing work outside of the bat maternity season, along with retaining bat access points, resulted in a similar number of brown long-eared bats continuing to use a roost within an attic. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F950https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F950Fri, 20 Dec 2013 09:23:40 +0000Collected Evidence: Collected Evidence: Change of crop (i.e. to a crop less palatable to primates) We found no evidence for the effects of changing the crop to a less palatable crop on primate populations. '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%2F1439https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1439Tue, 17 Oct 2017 10:47:53 +0100Collected Evidence: Collected Evidence: Change season/timing of livestock grazing We found no studies that evaluated the effects, on peatland vegetation, of changing the season or timing of livestock grazing. ‘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%2Fwww.conservationevidence.com%2Factions%2F1737https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1737Mon, 27 Nov 2017 21:22:33 +0000Collected Evidence: Collected Evidence: Change season/timing of cutting/mowing Two studies evaluated the effects on peatland vegetation of mowing or cutting in different seasons. One study was in a fen meadow and one was in a peatland with mixed vegetation. Plant community composition (2 studies): One replicated, randomized, paired, before-and after study in a fen meadow in the UK reported that changes in plant community composition were typically similar in spring-, summer- and autumn-mown plots. However, one study in a peatland in the Netherlands reported that summer- and winter-mown areas developed cover of different plant community types. Overall plant richness/diversity (1 study): One replicated, randomized, paired, before-and after study in a fen meadow in the UK found that plant species richness increased more, over two years, in summer-mown plots than spring- or autumn-mown plots. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1771https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1771Mon, 27 Nov 2017 21:42:35 +0000Collected Evidence: Collected Evidence: Change the towing speed of a trawl net One study examined the effect of changing the towing speed of a trawl net on catch of marine fish. The study was in the North Sea (Norway). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (0 STUDIES) BEHAVIOUR (0 STUDIES) OTHER (1 STUDY) Improved size-selectivity of fishing gear (1 study): One replicated, paired study in the North Sea found that changing the towing speed of a bottom trawl net did not increase the size selectivity of small cod and haddock. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2687https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2687Wed, 02 Dec 2020 10:42:04 +0000Collected Evidence: Collected Evidence: Change the size of the main body of a trawl net One study examined the effects of changing the size of the main body of a trawl net to reduce unwanted catch on marine fish populations. The study was in the North Sea (Norway). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (0 STUDIES) BEHAVIOUR (0 STUDIES) OTHER (1 STUDY) Improved size-selectivity of fishing gear (1 study): One replicated study in the North Sea found that reducing the size of the main body of a trawl net did not improve the size-selection of cod and haddock. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2705https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2705Thu, 17 Dec 2020 12:05:11 +0000Collected Evidence: Collected Evidence: Change season/timing of livestock grazing: freshwater marshes Three studies evaluated the effects, on vegetation, of grazing freshwater marshes in different seasons or at different times. Two studies were in the USA and one was in Canada. In all three studies, the livestock were cattle. VEGETATION COMMUNITY Community composition (1 study): One replicated, randomized, paired, controlled, before-and-after study of freshwater marshes and wet meadows in the USA reported that plots grazed in the summer and autumn experienced similar changes in overall plant community composition over a year. Relative abundance (1 study): One replicated, randomized, paired, controlled study of ephemeral pools in the USA found that pools grazed in the dry or wet seasons had similar cover of grasses relative to forbs over three years. Overall richness/diversity (1 study): One replicated, site comparison study of freshwater marshes in Canada found that in summer, marshes grazed in the summer/autumn contained more plant genera than marshes grazed in the spring/summer. Native/non-target richness/diversity (1 study): One replicated, randomized, paired, controlled study of ephemeral pools in the USA found that pools grazed in the dry and wet seasons experienced similar changes in native plant richness over three years. VEGETATION ABUNDANCE Overall abundance (1 study): One replicated, randomized, paired, controlled, before-and-after study of freshwater marshes and wet meadows the USA found that, in three of four habitat types, summer- and autumn-grazed plots experienced similar changes in live vegetation biomass over one year. VEGETATION STRUCTURE Height (1 study): One replicated, site comparison study of freshwater marshes in Canada found that in summer, marshes grazed in the summer/autumn contained taller emergent vegetation than marshes grazed in the spring/summer. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2974https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2974Thu, 25 Mar 2021 14:17:41 +0000Collected Evidence: Collected Evidence: Change season/timing of livestock grazing: brackish/salt marshes Two studies evaluated the effects, on vegetation, of grazing brackish/salt marshes in different seasons or at different times. One study was in the USA and one was in the Netherlands. In both studies, the focal livestock were cattle. VEGETATION COMMUNITY Community composition (1 study): One replicated, randomized, paired, controlled, before-and-after study on a salt marsh in the Netherlands found that plots grazed annually by 0.5 cattle/ha and plots grazed biennially by 1.0 cattle/ha experienced a similar turnover of plant species over six years, and had a similar overall plant community composition after six years. Overall richness/diversity (1 study): The same study found that plots grazed annually by 0.5 cattle/ha and plots grazed biennially by 1.0 cattle/ha experienced similar increases in plant species richness over six years, and had similar species richness after six years. VEGETATION ABUNDANCE Overall abundance (1 study): One replicated, randomized, paired, controlled, before-and-after study in alkali marshes in the USA found that summer- and autumn-grazed plots experienced similar changes in live vegetation biomass, over one year. Individual species abundance (1 study): One replicated, randomized, paired, controlled, before-and-after study on a salt marsh in the Netherlands found that grazing annually with 0.5 cattle/ha stimulated greater increases in cover of sea aster Aster tripolium than grazing biennially with 1.0 cattle/ha. There was no significant difference between the grazing regimes for cover of sea couch grass Elytrigia atheria. Vegetation was monitored over six years. VEGETATION STRUCTURECollected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2975https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2975Thu, 25 Mar 2021 14:17:58 +0000Collected Evidence: Collected Evidence: Change season/timing of livestock grazing: freshwater swampsWe found no studies that evaluated the effects, on vegetation, of grazing freshwater swamps in different seasons or at different times. ‘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%2Fwww.conservationevidence.com%2Factions%2F2976https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2976Thu, 25 Mar 2021 14:18:12 +0000Collected Evidence: Collected Evidence: Change season/timing of livestock grazing: brackish/saline swampsWe found no studies that evaluated the effects, on vegetation, of grazing brackish/saline swamps in different seasons or at different times. ‘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%2Fwww.conservationevidence.com%2Factions%2F2977https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2977Thu, 25 Mar 2021 14:18:26 +0000Collected Evidence: Collected Evidence: Change season/timing of vegetation harvest: freshwater marshes Three studies evaluated the effects, on vegetation, of harvesting vegetation from freshwater marshes in different seasons or at different times. There was one study in Switzerland, one in Belgium and one in Japan. VEGETATION COMMUNITY Community composition (1 study): One replicated, randomized, paired, controlled study in wet meadows in Switzerland reported that summer-harvested and winter-harvested plots experienced similar changes in their overall plant community composition, over 3–4 years. Overall richness/diversity (1 study): One replicated, paired, controlled study of wet grasslands in Belgium reported that the effect of a single harvest between June and November on overall plant species richness depended on the month of harvesting. VEGETATION ABUNDANCE Overall abundance (1 study): One replicated, paired, controlled study of wet grasslands in Belgium reported that the effect of a single harvest between June and November on overall vegetation abundance (including litter) depended on the month of harvesting. Individual species abundance (3 studies): All three studies quantified the effect of this action on the abundance of individual plant species. The studies all reported that individual species’ abundances responded differently to harvesting in different seasons. For example, the controlled, before-and-after study in Japan reported that harvesting in June reduced the abundance of common reed Phragmites australis, in the following summer, more than harvesting in July. VEGETATION STRUCTURE Overall structure (1 study): One replicated, randomized, paired, controlled study in wet meadows in Switzerland reported that summer-harvested and winter-harvested plots both experienced a shift in vegetation cover towards lower vegetation layers, over 3–4 years. Diameter/perimeter/area (1 study): The same study reported that summer harvesting and winter harvesting had opposite effects on the diameter of common reed Phragmites australis shoots: they became thinner over four years of summer harvests but thicker over three years of winter harvests. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3005https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3005Wed, 31 Mar 2021 13:33:45 +0100Collected Evidence: Collected Evidence: Change season/timing of vegetation harvest: brackish/salt marshesWe found no studies that evaluated the effects, on vegetation, of harvesting brackish/salt marshes in different seasons or at different times. ‘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%2Fwww.conservationevidence.com%2Factions%2F3006https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3006Wed, 31 Mar 2021 13:34:28 +0100Collected Evidence: Collected Evidence: Change season/timing of vegetation harvest: freshwater swampsWe found no studies that evaluated the effects, on vegetation, of harvesting freshwater swamps in different seasons or at different times. ‘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%2Fwww.conservationevidence.com%2Factions%2F3007https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3007Wed, 31 Mar 2021 13:34:40 +0100Collected Evidence: Collected Evidence: Change season/timing of vegetation harvest: brackish/saline swampsWe found no studies that evaluated the effects, on vegetation, of harvesting brackish/saline swamps in different seasons or at different times. ‘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%2Fwww.conservationevidence.com%2Factions%2F3008https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3008Wed, 31 Mar 2021 13:34:53 +0100Collected Evidence: Collected Evidence: Change season/timing of cutting/mowing: freshwater marshes Four studies evaluated the effects, on vegetation, of cutting/mowing freshwater marshes in different seasons or at different times. There was one study in each of Switzerland, the Netherlands, Belgium and Japan. VEGETATION COMMUNITY Community composition (2 studies): Two replicated, randomized, paired, controlled studies in wet meadows in Switzerland and farmland ditches in the Netherlands reported that cutting vegetation in different seasons typically had similar effects on the overall plant community composition, over 1–4 years. Overall richness/diversity (2 studies): One replicated, randomized, paired, controlled study in farmland ditches in the Netherlands found that marshy areas cut in May and areas cut in November typically contained a similar number of plant species, when surveyed in July. One replicated, paired, controlled study of wet grasslands in Belgium reported that the effect of a single mow between June and November on overall plant species richness depended on the month of mowing. VEGETATION ABUNDANCE Overall abundance (1 study): One replicated, paired, controlled study of wet grasslands in Belgium reported that the effect of a single mow between June and November on overall vegetation abundance (including litter) depended on the month of mowing. Individual species abundance (4 studies): All four studies quantified the effect of this action on the abundance of individual plant species. The studies all reported that the abundance of some plant species responded differently to cutting in different seasons. The controlled, before-and-after study in Japan, for example, reported that cutting in June reduced the abundance of common reed Phragmites australis in the following summer more than cutting in July. VEGETATION STRUCTURE Overall structure (1 study): One replicated, randomized, paired, controlled study in wet meadows in Switzerland reported that summer-mown and winter-mown plots both experienced a shift in vegetation cover towards lower vegetation layers, over 3–4 years. Diameter/perimeter/area (1 study): The same study reported that summer-mowing and winter-mowing had opposite effects on the diameter of common reed Phragmites australis shoots: they became thinner over four years of summer mowing but thicker over three years of winter mowing. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3070https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3070Fri, 02 Apr 2021 13:38:46 +0100Collected Evidence: Collected Evidence: Change season/timing of cutting/mowing: brackish/salt marshesWe found no studies that evaluated the effects, on vegetation, of cutting/mowing brackish/salt marshes in different seasons or at different times. ‘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%2Fwww.conservationevidence.com%2Factions%2F3071https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3071Fri, 02 Apr 2021 13:41:04 +0100Collected Evidence: Collected Evidence: Change season/timing of prescribed burning: freshwater marshes One study evaluated the effects, on vegetation, of burning freshwater marshes in different seasons or at different times. The study was in the USA. VEGETATION COMMUNITY Overall richness/diversity (1 study): One replicated, randomized, controlled study in a marsh in the USA found that spring-burned plots had greater plant species richness than summer-burned plots, at the end of the growing season. VEGETATION ABUNDANCE Overall abundance (1 study): One replicated, randomized, controlled study in a marsh in the USA found that spring-burned plots had greater overall vegetation cover than summer-burned plots, at the end of the growing season. Individual species abundance (1 study): The same study reported that the cover and frequency of some individual plant species responded differently to spring vs summer burning. VEGETATION STRUCTURECollected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3074https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3074Fri, 02 Apr 2021 14:45:30 +0100Collected Evidence: Collected Evidence: Change season/timing of prescribed burning: brackish/salt marshesWe found no studies that evaluated the effects, on vegetation, of burning brackish/salt marshes in different seasons or at different times. ‘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%2Fwww.conservationevidence.com%2Factions%2F3075https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3075Fri, 02 Apr 2021 14:45:47 +0100Collected Evidence: Collected Evidence: Change season/timing of prescribed burning: freshwater swampsWe found no studies that evaluated the effects, on vegetation, of burning freshwater swamps in different seasons or at different times. ‘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%2Fwww.conservationevidence.com%2Factions%2F3076https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3076Fri, 02 Apr 2021 14:46:01 +0100Collected Evidence: Collected Evidence: Change season/timing of prescribed burning: brackish/saline swampsWe found no studies that evaluated the effects, on vegetation, of burning brackish/saline swamps in different seasons or at different times. ‘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%2Fwww.conservationevidence.com%2Factions%2F3077https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3077Fri, 02 Apr 2021 14:46:19 +0100Collected Evidence: Collected Evidence: Change the colour (spectral composition) of lighting Three studies evaluated the effects of changing the colour (spectral composition) of lighting on reptile populations. Two studies were in the USA and one was in Australia. COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (0 STUDIES) BEHAVIOUR (3 STUDIES) Behaviour change (3 studies): Two replicated, controlled studies (including one randomized study) in the USA and Australia found that yellow-tinted incandescent lighting did not affect the seaward orientation of loggerhead turtle hatchlings, whereas four other types of lighting did, and that hatchlings were disoriented in fewer trials by red lighting than by amber lighting. One replicated, controlled study in the USA found in laboratory trials that filtering out high wavelengths did not prevent loggerhead or green turtles crawling towards light sources. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3628https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3628Thu, 09 Dec 2021 13:43:25 +0000Collected Evidence: Collected Evidence: Change season/timing of prescribed burning Two studies evaluated the effects on butterflies and moths of changing the season or timing of prescribed burning. One study was in each of Australia and the USA. COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (2 STUDIES) Abundance (2 studies): One replicated, controlled, before-and-after study in Australia found that management of a tropical savanna and floodplain with early season burning or no burning for 2–5 years increased the abundance of caterpillars, but management with late season burning did not. One replicated, paired, controlled study in the USA found that Karner blue butterfly abundance was similar on grasslands managed by burning in summer or autumn, and on unmanaged grasslands. BEHAVIOUR (0 STUDIES)Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3878https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3878Thu, 21 Jul 2022 16:32:42 +0100