Collected Evidence: Collected Evidence: Backfill canals or trenches: freshwater swampsWe found no studies that evaluated the effects, on vegetation, of backfilling canals or trenches in 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%2Fwww.conservationevidence.com%2Factions%2F2989https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2989Thu, 25 Mar 2021 21:10:54 +0000Collected Evidence: Collected Evidence: Backfill canals or trenches: brackish/saline swampsWe found no studies that evaluated the effects, on vegetation, of backfilling canals or trenches in 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%2Fwww.conservationevidence.com%2Factions%2F2990https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2990Thu, 25 Mar 2021 21:11:05 +0000Collected Evidence: Collected Evidence: Plug/dam canals or trenches: freshwater swampsWe found no studies that evaluated the effects, on vegetation, of plugging/damming canals or trenches in 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%2Fwww.conservationevidence.com%2Factions%2F2993https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2993Mon, 29 Mar 2021 12:08:51 +0100Collected Evidence: Collected Evidence: Plug/dam canals or trenches: brackish/saline swampsWe found no studies that evaluated the effects, on vegetation, of plugging/damming canals or trenches in 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%2Fwww.conservationevidence.com%2Factions%2F2994https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2994Mon, 29 Mar 2021 12:09:11 +0100Collected Evidence: Collected Evidence: Design transportation or service corridors to maintain water flowWe found no studies that evaluated the effects, on vegetation, of designing infrastructure to maintain water flow into/out of 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%2Fwww.conservationevidence.com%2Factions%2F2995https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2995Mon, 29 Mar 2021 12:29:29 +0100Collected Evidence: Collected Evidence: Retain/create habitat linkages across service corridorsWe found no studies that evaluated the effects, on marsh/swamp vegetation, of retaining or creating habitat linkages across transportation or service corridors.   ‘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%2F2996https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2996Mon, 29 Mar 2021 12:33:06 +0100Collected Evidence: Collected Evidence: Reduce frequency of vegetation harvest: brackish/salt marshesWe found no studies that evaluated the effects, on vegetation, of reducing the frequency of harvest in brackish/salt marshes (or harvesting at different frequencies).   ‘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%2F2998https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2998Wed, 31 Mar 2021 13:16:12 +0100Collected Evidence: Collected Evidence: Reduce frequency of vegetation harvest: freshwater swampsWe found no studies that evaluated the effects, on vegetation, of reducing the frequency of harvest in freshwater swamps (or harvesting at different frequencies).   ‘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%2F2999https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2999Wed, 31 Mar 2021 13:16:35 +0100Collected Evidence: Collected Evidence: Reduce frequency of vegetation harvest: brackish/saline swampsWe found no studies that evaluated the effects, on vegetation, of reducing the frequency of harvest in brackish/saline swamps (or harvesting at different frequencies).   ‘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%2F3000https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3000Wed, 31 Mar 2021 13:16:57 +0100Collected Evidence: Collected Evidence: Reduce intensity of vegetation harvest: freshwater marshesWe found no studies that evaluated the effects, on vegetation, of reducing the intensity of harvest in freshwater marshes (or harvesting at different intensities).   ‘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%2F3001https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3001Wed, 31 Mar 2021 13:26:27 +0100Collected Evidence: Collected Evidence: Reduce intensity of vegetation harvest: brackish/salt marshesWe found no studies that evaluated the effects, on vegetation, of reducing the intensity of harvest in brackish/salt marshes (or harvesting at different intensities).   ‘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%2F3002https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3002Wed, 31 Mar 2021 13:26:40 +0100Collected Evidence: Collected Evidence: Reduce intensity of vegetation harvest: brackish/saline swampsWe found no studies that evaluated the effects, on vegetation, of reducing the intensity of harvest in brackish/saline swamps (or harvesting at different intensities).   ‘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%2F3004https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3004Wed, 31 Mar 2021 13:27:31 +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: Use low-impact methods to harvest vegetation: freshwater marshesWe found no studies that evaluated the effects, on vegetation, of using supposedly low-impact methods to harvest vegetation in 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%2Fwww.conservationevidence.com%2Factions%2F3009https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3009Wed, 31 Mar 2021 14:09:59 +0100Collected Evidence: Collected Evidence: Use low-impact methods to harvest vegetation: brackish/salt marshesWe found no studies that evaluated the effects, on vegetation of using supposedly low-impact methods to harvest vegetation in brackish/salt 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%2Fwww.conservationevidence.com%2Factions%2F3010https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3010Wed, 31 Mar 2021 14:10:09 +0100Collected Evidence: Collected Evidence: Use low-impact methods to harvest vegetation: brackish/saline swampsWe found no studies that evaluated the effects, on vegetation, of using supposedly low-impact methods to harvest vegetation in 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%2Fwww.conservationevidence.com%2Factions%2F3012https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3012Wed, 31 Mar 2021 14:10:48 +0100Collected Evidence: Collected Evidence: Implement ‘mosaic management’ when harvesting wild vegetationWe found no studies that evaluated the effects, on vegetation, of implementing mosaic management when harvesting wild vegetation from 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%2Fwww.conservationevidence.com%2Factions%2F3013https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3013Wed, 31 Mar 2021 14:20:54 +0100Collected Evidence: Collected Evidence: Provide new technologies to reduce harvesting pressure on vegetationWe found no studies that evaluated the effects, on vegetation or human behaviour, of providing new technologies to reduce harvesting pressure on vegetation in 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%2Fwww.conservationevidence.com%2Factions%2F3014https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3014Wed, 31 Mar 2021 14:22:01 +0100Collected Evidence: Collected Evidence: Reduce frequency of hunting/collecting animalsWe found no studies that evaluated the effects, on vegetation, of reducing the frequency of hunting/collecting animals in 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%2Fwww.conservationevidence.com%2Factions%2F3015https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3015Wed, 31 Mar 2021 14:23:23 +0100Collected Evidence: Collected Evidence: Reduce intensity of hunting/collecting animalsWe found no studies that evaluated the effects, on vegetation, of reducing the intensity of hunting/collecting animals in 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%2Fwww.conservationevidence.com%2Factions%2F3016https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3016Wed, 31 Mar 2021 14:24:32 +0100Collected Evidence: Collected Evidence: Use low-impact methods to hunt/collect animalsWe found no studies that evaluated the effects, on vegetation, of using supposedly low-impact methods to hunt/collect animals in 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%2Fwww.conservationevidence.com%2Factions%2F3017https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3017Wed, 31 Mar 2021 14:25:33 +0100Collected Evidence: Collected Evidence: Reintroduce overharvested animalsWe found no studies that evaluated the effects, on marsh/swamp vegetation, of reintroducing overharvested animals.   ‘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%2F3018https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3018Wed, 31 Mar 2021 14:26:34 +0100Collected Evidence: Collected Evidence: Restrict vehicle useWe found no studies that evaluated the effects, on vegetation, of restricting vehicle use in or near 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%2Fwww.conservationevidence.com%2Factions%2F3019https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3019Wed, 31 Mar 2021 14:39:31 +0100
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.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read the latest volume: Volume 21

Go to the CE Journal

Discover more on our blog

Our blog contains the latest news and updates from the Conservation Evidence team, the Conservation Evidence Journal, and our global partners in evidence-based conservation.


Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape ProgrammeRed List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Mauritian Wildlife Supporting Conservation Leaders
Sustainability Dashboard National Biodiversity Network Frog Life The international journey of Conservation - Oryx Cool Farm Alliance UNEP AWFA Bat Conservation InternationalPeople trust for endangered species Vincet Wildlife Trust