Conservation Evidence: Evidence Data

Collected Evidence: Collected Evidence: Legally protect habitat for marine and freshwater mammals Four studies evaluated the effects of legally protecting habitat for marine and freshwater mammals. One study was in each of the North Atlantic Ocean (Portugal), the South Pacific Ocean (New Zealand), the North Sea (UK) and the Port River estuary (Australia). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (4 STUDIES) Abundance (2 studies): One before-and-after study in the North Atlantic Ocean found that a population of Mediterranean monk seals increased during eight years after the islands they inhabited were legally protected. One before-and-after study in the North Sea found that a population of bottlenose dolphins was estimated to be a similar size before and after part of its range was protected. Survival (2 studies): One before-and-after study in the South Pacific Ocean found that the survival rate of Hector’s dolphins was higher after a coastal area was legally protected than before. One before-and-after study in the Port River estuary found that after the area became legally protected a similar number of Indo-Pacific bottlenose dolphin strandings were recorded compared to before protection, but the number of strandings caused by humans decreased. BEHAVIOUR (0 STUDIES)Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2915https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2915Mon, 08 Feb 2021 16:29:11 +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%2Fwww.conservationevidence.com%2Factions%2F2916https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2916Mon, 08 Feb 2021 16:30:18 +0000Collected Evidence: Collected Evidence: Cease or prohibit activities that cause disturbance in sensitive areas for marine and freshwater mammals Two studies evaluated the effects of prohibiting activities that cause disturbance in sensitive areas for marine mammals. One study was in the Kattegat Sea (Denmark) and one in the Indian Ocean (Australia). 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 fishing was prohibited and the reef was restored with boulders. BEHAVIOUR (1 STUDY) Behaviour change (1 study): One site comparison study in the Indian Ocean found that a beach where human access was fully prohibited had fewer Australian sea lions showing aggression or retreating compared to a beach where access was partly prohibited. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2917https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2917Mon, 08 Feb 2021 16:33:04 +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%2Fwww.conservationevidence.com%2Factions%2F2918https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2918Mon, 08 Feb 2021 16:34:09 +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%2Fwww.conservationevidence.com%2Factions%2F2919https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2919Mon, 08 Feb 2021 16:34:46 +0000