Collected Evidence: Collected Evidence: Release captive-bred marine and freshwater mammals to re-establish or boost native populations Two studies evaluated the effects of releasing captive-bred marine and freshwater mammals to re-establish or boost native populations. One study was in the Porto de Pedras estuary (Brazil) and one in water bodies in Florida (USA). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (2 STUDIES) Survival (2 studies): Two studies in the Porto de Pedras estuary and water bodies in Florida found that two of three Antillean manatees and two of 14 Florida manatees born in captivity and released into the wild survived for at least one year without further intervention. BEHAVIOUR (0 STUDIES)Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2933https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2933Tue, 09 Feb 2021 11:36:19 +0000Collected Evidence: Collected Evidence: Engage policymakers to make policy changes beneficial to marine and freshwater mammals One study evaluated the effects of engaging policymakers to make changes beneficial to marine and freshwater mammals. The study was in the Catazajá wetlands (Mexico). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (0 STUDIES) BEHAVIOUR (1 STUDY) Change in human behaviour (1 study): One study in the Catazajá wetlands reported that engaging policymakers resulted in the designation of a protected area for West Indian manatees. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2934https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2934Tue, 09 Feb 2021 11:38:17 +0000Collected Evidence: Collected Evidence: Educate the public to improve behaviour towards marine and freshwater mammals Three studies evaluated the effects of educating the public to improve behaviour towards marine and freshwater mammals. One study was in each of the North Atlantic Ocean (USA), the Sundarbans mangroves (Bangladesh) and the South Pacific Ocean (Peru). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (0 STUDIES) BEHAVIOUR (3 STUDIES) Change in human behaviour (3 studies): Three before-and-after studies in the North Atlantic Ocean, the Sundarbans mangroves and the South Pacific Ocean found that after educational whale-watching tours or an educational exhibition, participants were more willing to change their behaviour to support marine conservation, to donate money to marine conservation, or to cut their fishing nets to save entangled dolphins. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2935https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2935Tue, 09 Feb 2021 11:41:45 +0000Collected Evidence: Collected Evidence: Involve local communities in marine and freshwater mammal conservation projects We found no studies that evaluated the effects of involving local communities in marine and freshwater mammal conservation projects 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%2F2936https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2936Tue, 09 Feb 2021 11:44:18 +0000Collected Evidence: Collected Evidence: Use biocides or other chemicals to control invasive or problematic species We found no studies that evaluated the effects of using biocides or other chemicals to control invasive or problematic species 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%2F2937https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2937Tue, 09 Feb 2021 17:48:47 +0000
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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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