Conservation Evidence: Evidence Data

Collected Evidence: Collected Evidence: Use hook and line fishing instead of other fishing methods We found no studies that evaluated the effects of using hook and lime fishing instead of other fishing methods on subtidal benthic invertebrate populations. ‘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%2F2117https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2117Tue, 22 Oct 2019 09:47:59 +0100Collected Evidence: Collected Evidence: Use lower water pressure during hydraulic dredging We found no studies that evaluated the effects of using lower water pressure during hydraulic dredging on subtidal benthic invertebrate populations. ‘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%2F2120https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2120Tue, 22 Oct 2019 10:02:49 +0100Collected Evidence: Collected Evidence: Use alternative means of getting mussel seeds rather than dredging from natural mussel beds We found no studies that evaluated the effects of using alternative means of getting mussel seeds rather than dredging from natural mussel beds on subtidal benthic invertebrate populations. ‘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%2F2122https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2122Tue, 22 Oct 2019 10:14:55 +0100Collected Evidence: Collected Evidence: Use an otter trawl instead of a dredge One study examined the effects of using an otter trawl instead of a dredge on subtidal benthic invertebrates. The study was in the Irish Sea (Isle of Man). COMMUNITY RESPONSE (1 STUDY) Unwanted catch overall composition (1 study): One replicated, controlled, study in the Irish Sea found that an otter trawl caught a different species composition of unwanted invertebrate and fish species (combined) compared to two scallop dredges. POPULATION RESPONSE (1 STUDY) Overall abundance (1 study): One replicated, controlled, study in the Irish Sea found no difference in total invertebrate abundance and biomass living in or on the sediment of the trawl tracks following fishing with either an otter trawl or two scallop dredges. Unwanted catch overall abundance (1 study): One replicated, controlled, study in the Irish Sea found that an otter trawl caught fewer unwanted invertebrates and fish (combined) compared to two scallop dredges. OTHER (1 STUDY) Commercial catch abundance (1 study): One replicated, controlled, study in the Irish Sea found that an otter trawl caught similar number of commercially targeted queen scallops compared to two scallop dredges. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2123https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2123Tue, 22 Oct 2019 10:16:36 +0100Collected Evidence: Collected Evidence: Use more than one net on otter trawls We found no studies that evaluated the effects of using more than one net on otter trawls on subtidal benthic invertebrate populations. ‘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%2F2124https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2124Tue, 22 Oct 2019 10:17:39 +0100Collected Evidence: Collected Evidence: Use an otter trawl instead of a beam trawl One study examined the effects of using an otter trawl instead of a beam trawl on subtidal benthic invertebrates. The study was in the North Sea (Germany and Netherlands). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (1 STUDY) Overall abundance (1 study): One replicated, paired, controlled study in the North Sea found that otter trawls caused similar mortality of invertebrates in the trawl tracks compared to beam trawls in sandy areas but lower mortality in silty areas. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2125https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2125Tue, 22 Oct 2019 10:19:09 +0100Collected Evidence: Collected Evidence: Use a pulse trawl instead of a beam trawl One study examined the effects of using a pulse trawl instead of a beam trawl on subtidal benthic invertebrates. The study was in the North Sea (Netherlands). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (1 STUDY) Unwanted catch abundance (1 study): One replicated, controlled, study in the North Sea found that pulse trawls caught less unwanted invertebrate catch compared to traditional beam trawls, but the effects varied with species. OTHER (1 STUDY) Commercial catch abundance (1 study): One replicated, controlled, study in the North Sea found that pulse trawls reduced the volume of commercial catch by 19% compared to beam trawls. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2126https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2126Tue, 22 Oct 2019 10:22:02 +0100Collected Evidence: Collected Evidence: Use a smaller beam trawl One study examined the effects of using a smaller beam trawl on subtidal benthic invertebrates. The study was in the North Sea (Germany and Netherlands). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (1 STUDY) Overall abundance (1 study): One replicated, paired, controlled study in the North Sea found that a smaller beam trawl caused similar mortality of invertebrates in the trawl tracks compared to a larger beam trawl. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2127https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2127Tue, 22 Oct 2019 10:23:07 +0100Collected Evidence: Collected Evidence: Use a square mesh instead of a diamond mesh codend on trawl nets One study examined the effects of using a square mesh instead of a diamond mesh codend on trawl nets on unwanted catch of subtidal benthic invertebrate populations. The study was in the English Channel (UK). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (1 STUDY) Unwanted catch abundance (1 study): One replicated, paired, controlled study in the English Channel found that a trawl net with a square mesh codend caught less non-commercial unwanted invertebrates in one of two areas, and similar amounts in the other area, compared to a standard diamond mesh codend. OTHER (1 STUDY) Commercial catch abundance (1 study): One replicated, paired, controlled study in the English Channel found that a trawl net with a square mesh codend caught similar amounts of commercially targeted fish species in two areas, and that in one of two areas it caught more commercially important shellfish, compared to a standard diamond mesh codend. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2136https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2136Tue, 22 Oct 2019 10:56:11 +0100Collected Evidence: Collected Evidence: Use traps instead of fishing nets One study examined the effects of using traps instead of fishing nets on subtidal benthic invertebrates. The study took place in the Mediterranean Sea (Spain). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (1 STUDY) Unwanted catch abundance (1 study): One replicated, controlled study in the Mediterranean Sea found that the combined amount of unwanted catch of invertebrates and fish appeared lower using plastic traps than trammel nets, but higher using collapsible traps. OTHER (1 STUDY) Commercial catch abundance (1 study): One replicated, controlled study in the Mediterranean Sea found that the catch of commercially targeted lobsters was lower using traps than in trammel nets. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2142https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2142Tue, 22 Oct 2019 11:08:46 +0100Collected Evidence: Collected Evidence: Use different bait species in traps One study examined the effects of using different bait species in traps on subtidal benthic invertebrates. The study took place in the South Pacific Ocean (New Zealand). COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (1 STUDY) Unwanted catch abundance (1 study): One replicated, controlled study in the South Pacific Ocean found that the type of bait used in fishing pots did not change the amount of unwanted invertebrates caught. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2145https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F2145Tue, 22 Oct 2019 11:16:22 +0100