Collected Evidence: Collected Evidence: Use weakened fishing gear We found no studies that evaluated the effects of using weakened 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%2F2797https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2797Thu, 04 Feb 2021 16:39:26 +0000Collected Evidence: Collected Evidence: Use sinking lines instead of floating lines We found no studies that evaluated the effects of using sinking lines instead of floating lines 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%2F2799https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2799Thu, 04 Feb 2021 16:41:08 +0000Collected Evidence: Collected Evidence: Use stiffened materials or increase tension of fishing gear One study evaluated the effects on marine mammals of using stiffened materials in fishing nets. The study was in the South Atlantic Ocean (Argentina). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (0 STUDIES) BEHAVIOUR (0 STUDIES) OTHER (1 STUDY) Reduction in entanglements/unwanted catch (1 study): One controlled study in the South Atlantic Ocean found that using stiffened fishing nets did not reduce the number of Franciscana dolphin entanglements. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2801https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2801Thu, 04 Feb 2021 17:10:46 +0000Collected Evidence: Collected Evidence: Use volunteers to deter tourists from harassing marine and freshwater mammals at wildlife-viewing sites One study evaluated the effects of using volunteers to deter tourists from harassing marine and freshwater mammals at wildlife-viewing sites. The study was at the Ohau Stream waterfall (New Zealand). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (0 STUDIES) BEHAVIOUR (0 STUDIES) OTHER (1 STUDY) Change in human behaviour (1 study): One randomized, controlled study at the Ohau Stream waterfall found that the presence of an official-looking volunteer resulted in fewer tourists harassing New Zealand fur seals at a waterfall. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2844https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2844Fri, 05 Feb 2021 16:27:37 +0000Collected Evidence: Collected Evidence: Vaccinate against disease We found no studies that evaluated the effects of vaccinating against disease 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%2F2858https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2858Mon, 08 Feb 2021 11:15:29 +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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