Conservation Evidence: Evidence Data

Collected Evidence: Collected Evidence: Replace or repair damaged anti-predator nets around aquaculture systems One study evaluated the effects on marine mammals of replacing anti-predator nets around aquaculture systems. The study was in the North Atlantic Ocean (USA). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (0 STUDIES) BEHAVIOUR (0 STUDIES) OTHER (1 STUDY) Human-wildlife conflict (1 study): One site comparison study in the North Atlantic Ocean found that replacing anti-predator nets more frequently at salmon farms resulted in fewer salmon losses to harbour seal predation. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2774https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2774Thu, 04 Feb 2021 15:21:20 +0000Collected Evidence: Collected Evidence: Establish ‘move-on rules’ for fishing vessels if mammals are encountered One study evaluated the effects on marine mammals of establishing move-on rules for fishing vessels if mammals are encountered. The study was in the Great Australian Bight (Australia). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (1 STUDY) Survival (1 study): One before-and-after study in the Great Australian Bight found that introducing measures to delay or relocate fishing if dolphins were encountered, along with releasing trapped dolphins, resulted in fewer short-beaked common dolphins being encircled and killed. BEHAVIOUR (0 STUDIES)Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2790https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2790Thu, 04 Feb 2021 16:29:13 +0000Collected Evidence: Collected Evidence: Deploy fishing gear at different depths One study evaluated the effects on marine mammals of deploying fishing gear at different depths. The study was in the Arafura Sea (Australia). 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 Arafura Sea found that fishing nets deployed 4.5 m below the water surface had fewer entanglements of dolphins than surface nets. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2793https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2793Thu, 04 Feb 2021 16:33:47 +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 a larger mesh size for fishing trap-nets One study evaluated the effects on freshwater mammals of using a larger mesh size for fishing trap-nets. The study was in the River Indal (Sweden). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (0 STUDIES) BEHAVIOUR (0 STUDIES) OTHER (1 STUDY) Human-wildlife conflict (1 study): One controlled study in the River Indal found that a fishing trap-net with a larger mesh size in the first two sections had fewer grey seals feeding around it and less damage caused by seals. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2803https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2803Thu, 04 Feb 2021 17:13:38 +0000Collected Evidence: Collected Evidence: Play predator calls to deter mammals from fishing gear One study evaluated the effects of playing predator calls to deter mammals from fishing gear. The study was in the South Atlantic Ocean (Africa). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (0 STUDIES) BEHAVIOUR (0 STUDIES) OTHER (1 STUDY) Human-wildlife conflict (1 study): One study in the South Atlantic Ocean found that playing killer whale vocalisations did not deter Cape fur seals from feeding on fish catches in a purse-seine net or trawl net. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2817https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2817Fri, 05 Feb 2021 15:08:39 +0000Collected Evidence: Collected Evidence: Use an electric current to deter mammals from fishing gear One study evaluated the effects of using an electric current to deter mammals from fishing gear. The study was in the Fraser River (Canada). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (0 STUDIES) BEHAVIOUR (0 STUDIES) OTHER (1 STUDY) Human-wildlife conflict (1 study): One controlled study in the Fraser River found that using an electric current on a fishing net reduced Pacific harbour seal predation on salmon catches. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2818https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2818Fri, 05 Feb 2021 15:10:45 +0000Collected Evidence: Collected Evidence: Use noise aversive conditioning to deter mammals from fishing gear One study evaluated the effects on marine mammals of using noise aversive conditioning to deter mammals from fishing gear. The study was in the North Pacific Ocean (USA). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (0 STUDIES) BEHAVIOUR (0 STUDIES) OTHER (1 STUDY) Human-wildlife conflict (1 study): One study in the North Pacific Ocean found that noise aversive conditioning did not reduce bait foraging behaviour by California sea lions. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2819https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2819Fri, 05 Feb 2021 15:12:55 +0000Collected Evidence: Collected Evidence: Use acoustic decoys to divert mammals away from fishing gear One study evaluated the effects on marine mammals of using acoustic decoys to divert mammals away from fishing gear. The study was in the Gulf of Alaska (USA). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (0 STUDIES) BEHAVIOUR (1 STUDY) Behaviour change (1 study): One study in the Gulf of Alaska found that increasing the distance between an acoustic decoy device and fishing lines resulted in fewer sperm whales at the lines, but sperm whale presence and time of arrival did not differ. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2820https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2820Fri, 05 Feb 2021 15:15:05 +0000Collected Evidence: Collected Evidence: Install barriers at wild fisheries One study evaluated the effects on freshwater mammals of installing a barrier at a wild fishery. The study was in the Puntledge River (Canada). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (0 STUDIES) BEHAVIOUR (0 STUDIES) OTHER (1 STUDY) Human-wildlife conflict (1 study): One randomized, controlled study in the Puntledge River found that installing a ‘cork line’ barrier did not deter harbour seals from feeding on salmon released from a hatchery. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2824https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2824Fri, 05 Feb 2021 15:52:33 +0000Collected Evidence: Collected Evidence: Switch off artificial lighting at wild fisheries One study evaluated the effects on freshwater mammals of switching off artificial lights at a wild fishery. The study was in the Puntledge River (Canada). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (0 STUDIES) BEHAVIOUR (0 STUDIES) OTHER (1 STUDY) Human-wildlife conflict (1 study): One randomized, controlled study in the Puntledge River found that switching off artificial lights on a bridge did not deter harbour seals from feeding on salmon released from a hatchery. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2825https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2825Fri, 05 Feb 2021 15:56:10 +0000Collected Evidence: Collected Evidence: Use ‘mammal-safe’ nets to capture and release mammals trapped in fishing structures One study evaluated the effects on marine mammals of using ‘mammal-safe’ nets to capture and release mammals trapped in fishing structures. The study was in the Bay of Fundy (Canada). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (1 STUDY) Survival (1 study): One controlled study in the Bay of Fundy found that using ‘marine mammal nets’ with a larger mesh size to release harbour porpoises from herring weirs resulted in lower porpoise mortality compared to using conventional herring nets. BEHAVIOUR (0 STUDIES)Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2828https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2828Fri, 05 Feb 2021 16:00:21 +0000Collected Evidence: Collected Evidence: Establish handling and release protocols for mammals captured by fisheries One study evaluated the effects on marine mammals of establishing handling and release protocols for mammals captured by wild fisheries. The study was in the Great Australian Bight (Australia). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (1 STUDY) Survival (1 study): One before-and-after study in the Great Australian Bight found that introducing a code of conduct for releasing dolphins trapped in nets, along with avoiding dolphins during fishing, resulted in lower mortality of short-beaked common dolphins. BEHAVIOUR (0 STUDIES)Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2829https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2829Fri, 05 Feb 2021 16:02:48 +0000Collected Evidence: Collected Evidence: Train tourist guides to minimize disturbance and promote marine and freshwater mammal conservation One study evaluated the effects of training tourist guides to minimize disturbance and promote marine and freshwater mammal conservation. The study was in the Kenai Fjords (Alaska). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (0 STUDIES) BEHAVIOUR (1 STUDY) Behaviour change (1 study): One before-and-after study in the Kenai Fjords found that fewer harbour seals were disturbed during kayak excursions after training was provided to kayak guides. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2840https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2840Fri, 05 Feb 2021 16:20:01 +0000Collected Evidence: Collected Evidence: Inform the public of ways to reduce disturbance to marine and freshwater mammals (e.g. use educational signs) One study evaluated the effects of informing the public of ways to reduce disturbance to marine and freshwater mammals. The study was in the South Pacific Ocean (New Zealand). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (0 STUDIES) BEHAVIOUR (0 STUDIES) OTHER (1 STUDY) Change in human behaviour (1 study): One controlled study in the South Pacific Ocean found that tourist groups that observed information signs approached and disturbed New Zealand fur seals in similar numbers to those that did not. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2843https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2843Fri, 05 Feb 2021 16:24:16 +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: Limit, cease or prohibit feeding of marine and freshwater mammals by tourists One study evaluated the effects of setting limits on feeding of marine mammals by tourists. The study was in Shark Bay (Australia). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (1 STUDY) Survival (1 study): One controlled, before-and-after study in Shark Bay found that after setting limits on feeding of bottlenose dolphins by tourists, the survival of calves born to females being fed increased and was similar to calves of non-fed mothers. BEHAVIOUR (0 STUDIES)Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2845https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2845Fri, 05 Feb 2021 16:31:57 +0000Collected Evidence: Collected Evidence: Use deterrents to reduce predation on marine and freshwater mammals by native species One study evaluated the effects of using deterrents to reduce predation by native species on marine mammals. The study was in the North Pacific Ocean (USA). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (1 STUDY) Survival (1 study): One controlled study in the North Pacific Ocean found that neither boat motor sounds nor the presence of humans reduced Galapagos shark predation on Hawaiian monk seal pups, although shark presence was low throughout the study. BEHAVIOUR (0 STUDIES)Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2855https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2855Mon, 08 Feb 2021 11:09:15 +0000Collected Evidence: Collected Evidence: Use methods to dampen underwater noise emissions (e.g. bubble curtains, screens) One study evaluated the effects on marine mammals of using bubble curtains or screens to dampen underwater noise emissions. The study was in the North Sea (Germany). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (0 STUDIES) BEHAVIOUR (1 STUDY) Behaviour change (1 study): One before-and-after, site comparison study in the North Sea found that using bubble curtains or screens during pile driving resulted in harbour porpoise detections within 15 km decreasing less compared to before pile driving than at sites without bubble curtains or screens. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2901https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2901Mon, 08 Feb 2021 16:11:37 +0000Collected Evidence: Collected Evidence: Cease or prohibit activities that cause disturbance during sensitive periods for marine and freshwater mammals We found no studies that evaluated the effects of ceasing or prohibiting activities that cause disturbance during sensitive periods 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%2F2918https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2918Mon, 08 Feb 2021 16:34:09 +0000Collected Evidence: Collected Evidence: Restore habitat for marine and freshwater mammals One study evaluated the effects of restoring habitat for marine mammals. The study was in the Kattegat sea (Denmark). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (1 STUDY) Abundance (1 study): One before-and-after study in the Kattegat sea found that harbour porpoise activity increased at a stony reef after it was restored with boulders and fishing was prohibited. BEHAVIOUR (0 STUDIES)Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2920https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2920Mon, 08 Feb 2021 16:36:03 +0000Collected Evidence: Collected Evidence: Reunite abandoned marine and freshwater mammal young with parents One study evaluated the effects of reuniting abandoned marine and freshwater mammal young with parents. The study was in the North Pacific Ocean (USA). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (1 STUDY) Reproductive success (1 study): One review in the North Pacific Ocean found that after reuniting Hawaiian monk seal pups with their mothers, along with at least seven other interventions to enhance survival, more than a quarter of the seals reproduced. Survival (1 study): One review in the North Pacific Ocean found that after reuniting Hawaiian monk seal pups with their mothers, along with at least seven other interventions to enhance survival, more than a quarter of the seals survived. BEHAVIOUR (0 STUDIES)Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2927https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2927Tue, 09 Feb 2021 11:06:36 +0000Collected Evidence: Collected Evidence: Translocate marine and freshwater mammal species before onset of impactful activities We found no studies that evaluated the effects of translocating marine and freshwater mammal species before onset of impactful activities. ‘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%2F2931https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F2931Tue, 09 Feb 2021 11:26:24 +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