Collected Evidence: Collected Evidence: Use ‘bioremediating’ organisms to remove or neutralize pollutants We found no studies that evaluated the effects of using ‘bioremediating’ organisms 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%2F2863https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2863Mon, 08 Feb 2021 11:24:46 +0000Collected 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: Cease or prohibit the disposal of mining waste (tailings) at sea or in rivers We found no studies that evaluated the effects of ceasing or prohibiting the disposal of mining waste (tailings) at sea or in rivers 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%2F2873https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2873Mon, 08 Feb 2021 11:38:16 +0000Collected Evidence: Collected Evidence: Cease or prohibit the disposal of drill cuttings at sea or in rivers We found no studies that evaluated the effects of ceasing or prohibiting the disposal of drill cuttings at sea or in rivers 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%2F2874https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2874Mon, 08 Feb 2021 11:40:05 +0000Collected Evidence: Collected Evidence: Introduce and enforce water quality regulations for aquaculture systems We found no studies that evaluated the effects of introducing and enforcing water quality regulations for aquaculture systems 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%2F2876https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2876Mon, 08 Feb 2021 11:41:53 +0000Collected Evidence: Collected Evidence: Create artificial wetlands to reduce the amount of pollutants reaching rivers and the sea We found no studies that evaluated the effects of creating artificial wetlands to reduce effluent reaching rivers and the sea 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%2F2881https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2881Mon, 08 Feb 2021 11:45:37 +0000Collected Evidence: Collected Evidence: Establish riparian buffers to reduce the amount of pollutants reaching rivers and the sea We found no studies that evaluated the effects of establishing riparian buffers to reduce the amount of pollutants reaching rivers and the sea 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%2F2882https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2882Mon, 08 Feb 2021 11:46:21 +0000Collected Evidence: Collected Evidence: Offer incentives to fishers for recovering, reusing or recycling fishing gear We found no studies that evaluated the effects of offering incentives to fishers for recovering, reusing or recycling fishing gear 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%2F2887https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2887Mon, 08 Feb 2021 11:49:52 +0000Collected Evidence: Collected Evidence: Inform fishers of the impacts of derelict fishing gear on mammals to encourage responsible disposal We found no studies that evaluated the effects of informing fishers of the impacts of derelict fishing gear on mammals to encourage responsible disposal. ‘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%2F2891https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2891Mon, 08 Feb 2021 11:53:08 +0000Collected Evidence: Collected Evidence: Limit, cease or prohibit discharge of solid waste overboard from vessels We found no studies that evaluated the effects of limiting, ceasing or prohibiting discharge of solid waste overboard from vessels 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%2F2893https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2893Mon, 08 Feb 2021 11:57:41 +0000Collected Evidence: Collected Evidence: Delay or cease operations if marine and freshwater mammals are detected within a specified zone We found no studies that evaluated the effects of delaying or ceasing operations if marine and freshwater mammals are detected within a specified zone 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%2F2898https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2898Mon, 08 Feb 2021 16:09:16 +0000Collected Evidence: Collected Evidence: Limit, cease or prohibit the discharge of cooling effluents from power stations We found no studies that evaluated the effects of limiting, ceasing or prohibiting the discharge of cooling effluents from power stations 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%2F2905https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2905Mon, 08 Feb 2021 16:16:15 +0000Collected Evidence: Collected Evidence: Use methods to reduce sediment disturbance during dredging (e.g. curtains, screens) We found no studies that evaluated the effects of using methods to reduce sediment disturbance during dredging, 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%2F2906https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2906Mon, 08 Feb 2021 16:17:21 +0000Collected Evidence: Collected Evidence: Limit, cease or prohibit discharge of waste effluents overboard from vessels We found no studies that evaluated the effects of limiting, ceasing or prohibiting discharge of waste effluents overboard from vessels, 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%2F2907https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2907Mon, 08 Feb 2021 16:18:11 +0000Collected Evidence: Collected Evidence: Remove and clean-up shoreline waste disposal sites We found no studies that evaluated the effects of removing and cleaning up shoreline waste disposal sites 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%2F2909https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2909Mon, 08 Feb 2021 16:19:56 +0000Collected Evidence: Collected Evidence: Implement rapid response plans for stranded mammals following extreme events We found no studies that evaluated the effects of implementing rapid response plans for stranded mammals following extreme events. ‘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%2F2911https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2911Mon, 08 Feb 2021 16:20:50 +0000Collected Evidence: Collected Evidence: Legally protect areas where climate change impacts are predicted to be less severe We found no studies that evaluated the effects of legally protecting areas where climate change impacts are predicted to be less severe 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%2F2912https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2912Mon, 08 Feb 2021 16:22:44 +0000Collected Evidence: Collected Evidence: Establish a network of legally protected areas We found no studies that evaluated the effects of establishing a network of legally protected areas 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%2F2913https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2913Mon, 08 Feb 2021 16:23:32 +0000Collected Evidence: Collected Evidence: Manage water levels and flow in rivers to maintain deep pools and connectivity We found no studies that evaluated the effects of managing water levels and flow in rivers to maintain deep pools and connectivity on 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%2F2914https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2914Mon, 08 Feb 2021 16:24:21 +0000Collected Evidence: Collected Evidence: Enforce existing legislation for habitat protection We found no studies that evaluated the effects of enforcing existing legislation for habitat protection 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%2F2916https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2916Mon, 08 Feb 2021 16:30:18 +0000Collected Evidence: Collected Evidence: Retain or create buffer zones around important habitats We found no studies that evaluated the effects of retaining or creating buffer zones around important habitats 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%2F2919https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2919Mon, 08 Feb 2021 16:34:46 +0000Collected Evidence: Collected Evidence: Create artificial habitat for marine and freshwater mammals We found no studies that evaluated the effects of creating artificial habitat for marine and freshwater mammals. ‘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%2F2921https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2921Mon, 08 Feb 2021 16:36:58 +0000Collected Evidence: Collected Evidence: Leave anthropogenic structures in place after decommissioning We found no studies that evaluated the effects of leaving anthropogenic structures in place after decommissioning 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%2F2922https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2922Mon, 08 Feb 2021 16:37:41 +0000Collected Evidence: Collected Evidence: Legally protect marine and freshwater mammal species We found no studies that evaluated the effects of legally protecting marine and freshwater mammal species. ‘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%2F2923https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2923Mon, 08 Feb 2021 16:38:46 +0000Collected Evidence: Collected Evidence: Place orphaned or abandoned marine and freshwater mammal young with foster parents We found no studies that evaluated the effects of placing orphaned or abandoned marine and freshwater mammal young with foster parents. ‘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%2F2928https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2928Tue, 09 Feb 2021 11:07:43 +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.

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