Collected Evidence: Collected Evidence: Introduce and enforce legislation to prevent intentional killing of mammals at wild fisheries We found no studies that evaluated the effects of introducing and enforcing legislation to prevent intentional killing of mammals at wild fisheries. ‘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%2F2778https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2778Thu, 04 Feb 2021 15:51:27 +0000Collected Evidence: Collected Evidence: Introduce and enforce regulations to prevent the use of harmful deterrents on mammals at wild fisheries We found no studies that evaluated the effects of introducing and enforcing regulations to prevent the use of harmful deterrents on mammals at wild fisheries. ‘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%2F2779https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2779Thu, 04 Feb 2021 15:59:06 +0000Collected Evidence: Collected Evidence: Prohibit or restrict hunting of marine and freshwater mammal species Five studies evaluated the effects of prohibiting hunting of marine mammal species. One study was in each of the Kattegat and Skagerrak seas (Denmark and Sweden), the North Atlantic Ocean, North Pacific Ocean and the Southern Hemisphere, the South Pacific Ocean (Australia), the North Atlantic Ocean (Greenland) and the Southern Ocean (Australia). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (5 STUDIES) Abundance (5 studies): Four of five studies (including three before-and-after studies) in the Kattegat and Skagerrak Seas, the South Pacific Ocean, the North Atlantic Ocean and the Southern Ocean found that after hunting was prohibited, the abundance of harbour seals and humpback whales increased over 7–30 years. The other study found that numbers of mature male sperm whales did not differ significantly before or 31 years after hunting was prohibited. One review in the North Atlantic Ocean, North Pacific Ocean and the Southern Hemisphere found significant increase rates for 10 of 12 baleen whale populations during 7–21 years after legislation to prohibit hunting was introduced. BEHAVIOUR (0 STUDIES)Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2780https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2780Thu, 04 Feb 2021 16:09:52 +0000Collected Evidence: Collected Evidence: Enforce legislation to prevent the trafficking and trade of marine and freshwater mammal products We found no studies that evaluated the effects of enforcing legislation to prevent the trafficking and trade of marine and freshwater mammal products. ‘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%2F2781https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2781Thu, 04 Feb 2021 16:16:18 +0000Collected Evidence: Collected Evidence: Restrict capture of marine and freshwater mammals for research or aquariums and zoos We found no studies that evaluated the effects of restricting capture of marine and freshwater mammals for research or aquariums and zoos. ‘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%2F2782https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2782Thu, 04 Feb 2021 16:17:27 +0000Collected Evidence: Collected Evidence: Introduce alternative treatments to reduce the use of marine and freshwater mammals in traditional medicine We found no studies that evaluated the effects of introducing alternative treatments to reduce the use of marine and freshwater mammals in traditional medicine. ‘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%2F2783https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2783Thu, 04 Feb 2021 16:19:10 +0000Collected Evidence: Collected Evidence: Introduce alternative food sources to replace marine and freshwater mammal meat We found no studies that evaluated the effects of introducing alternative food sources to replace marine and freshwater mammal meat. ‘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%2F2784https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2784Thu, 04 Feb 2021 16:21:34 +0000Collected Evidence: Collected Evidence: Introduce alternative income sources to reduce marine and freshwater mammal exploitation and trade We found no studies that evaluated the effects of introducing alternative income sources to reduce marine and freshwater mammal exploitation and trade. ‘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%2F2785https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2785Thu, 04 Feb 2021 16:22:40 +0000Collected Evidence: Collected Evidence: Introduce alternative sources of bait to replace the use of marine and freshwater mammals We found no studies that evaluated the effects of introducing alternative sources of bait to replace the use of 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%2F2786https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2786Thu, 04 Feb 2021 16:23:36 +0000Collected Evidence: Collected Evidence: Inform local communities and fishers about the negative impacts of hunting to reduce the killing of marine and freshwater mammals We found no studies that evaluated the effects of informing local communities and fishers about the negative impacts of hunting to reduce the killing of 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%2F2787https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2787Thu, 04 Feb 2021 16:24:44 +0000Collected Evidence: Collected Evidence: Educate local communities and fishers on mammal protection laws to reduce killing of marine and freshwater mammals We found no studies that evaluated the effects of educating local communities and fishers on mammal protection laws to reduce killing of 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%2F2788https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2788Thu, 04 Feb 2021 16:26:07 +0000Collected Evidence: Collected Evidence: Introduce and enforce regulations for sustainable hunting of marine and freshwater mammals for traditional subsistence and handicrafts We found no studies that evaluated the effects of introducing regulations for sustainable hunting of marine and freshwater mammals for traditional subsistence and handicrafts. ‘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%2F2789https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2789Thu, 04 Feb 2021 16:26:55 +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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