Collected Evidence: Collected Evidence: Install overpasses over waterways Two studies evaluated the effects on mammals of installing overpasses over waterways. One study was in the USA and one was in Spain. COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (0 STUDIES) BEHAVIOUR (2 STUDIES) Use (2 studies): Two studies (one replicated, one a site comparison) in the USA and Spain, found that bridges and overpasses over waterways were used by desert mule deer, collared peccaries and coyotes and by a range of large and medium-sized mammals. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2628https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2628Fri, 12 Jun 2020 11:38:42 +0100Collected Evidence: Collected Evidence: Install barrier fencing along waterways We found no studies that evaluated the effects on mammals of installing barrier fencing along waterways. ‘We found no studies’ means that we have not yet found any studies that have directly evaluated this intervention during our systematic journal and report searches. Therefore, we have no evidence to indicate whether or not the intervention has any desirable or harmful effects.Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2636https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2636Fri, 12 Jun 2020 13:05:14 +0100Collected Evidence: Collected Evidence: Provide mammals with escape routes from canals Five studies evaluated the effects on mammals of providing mammals with escape routes from canals. Two studies were in Germany and one each was in the USA, the Netherlands and Argentina. COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (2 STUDIES) Survival (2 studies): One of two studies (one before-and-after), in Germany and the USA, found that ramps and ladders reduced mule deer drownings whilst the other study found that ramps and shallow-water inlets did not reduce mammal drownings. BEHAVIOUR (3 STUDIES) Use (3 studies): Three studies (one replicated) in Germany, the Netherlands and Argentina, found that ramps and other access or escape routes out of water were used by a range of medium-sized and large mammals species. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2638https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2638Fri, 12 Jun 2020 13:06:54 +0100
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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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