Collected Evidence: Collected Evidence: Procambarus crayfish control: Removal of food source No evidence was captured on the effect of removing food sources as a control tool for Procambarus crayfish. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested 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%2F1033https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1033Fri, 03 Jul 2015 15:16:38 +0100Collected Evidence: Collected Evidence: Procambarus crayfish control: Draining the waterway No evidence was captured on the effect of draining the waterway as a control tool for Procambarus crayfish. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested 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%2F1034https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1034Fri, 03 Jul 2015 15:16:57 +0100Collected Evidence: Collected Evidence: Procambarus crayfish control: Remove the crayfish by electrofishing No evidence was captured on the effect of electrofishing as a control tool for Procambarus crayfish. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested 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%2F1035https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1035Fri, 03 Jul 2015 15:17:11 +0100Collected Evidence: Collected Evidence: Procambarus crayfish control: Relocate vulnerable crayfish No evidence was captured for the effect of relocating native species as a management tool against the effects of Procambarus crayfish. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested 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%2F1038https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1038Fri, 03 Jul 2015 15:18:14 +0100Collected Evidence: Collected Evidence: American bullfrog control: Biological control of co-occurring beneficial species No evidence was captured on the effects of removing co-occurring beneficial species on the control of American bullfrogs. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested 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%2F1040https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1040Fri, 03 Jul 2015 15:19:09 +0100Collected Evidence: Collected Evidence: American bullfrog control: Habitat modification No evidence was captured on the effects of habitat modification on the control of American bullfrogs. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested 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%2F1041https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1041Fri, 03 Jul 2015 15:19:26 +0100Collected Evidence: Collected Evidence: American bullfrog control: Draining ponds and altering the length of time for which the pond contains water No evidence was captured on the effects of draining ponds or altering the length of time for which ponds contain water on the control of American bullfrogs. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested 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%2F1042https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1042Fri, 03 Jul 2015 15:20:07 +0100Collected Evidence: Collected Evidence: American bullfrog control: Pond destruction No evidence was captured on the effects of pond destruction on the control of American bullfrogs. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested 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%2F1043https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1043Fri, 03 Jul 2015 15:20:20 +0100Collected Evidence: Collected Evidence: American bullfrog control: Fencing No evidence was captured on the effects of fencing on the control of American bullfrogs. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested 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%2F1044https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1044Fri, 03 Jul 2015 15:20:33 +0100Collected Evidence: Collected Evidence: American bullfrog control: Collection of egg clutches Despite reference to removal of egg clutches in some studies using bilge pumps or nets, no evidence was captured on the effects of egg collection on American bullfrogs. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested 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%2F1047https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1047Fri, 03 Jul 2015 15:21:15 +0100Collected Evidence: Collected Evidence: American bullfrog control: Public education No evidence was captured on the effects of public education on the control of American bullfrogs. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested 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%2F1049https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1049Fri, 03 Jul 2015 15:21:38 +0100Collected Evidence: Collected Evidence: Brown and black bullheads: Biological control using native predators No evidence was found on the impact of native predators on invasive bullhead populations. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested 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%2F1053https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1053Sun, 11 Oct 2015 20:12:08 +0100Collected Evidence: Collected Evidence: Red-eared terrapin: Biological control using native predators No evidence was captured on the use of predators to control invasive terrapin populations. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested 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%2F1056https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1056Tue, 13 Oct 2015 11:58:10 +0100Collected Evidence: Collected Evidence: Red-eared terrapin: Draining invaded waterbodies No evidence was captured on the impact of draining invaded waterbodies on reduction of red-eared terrapin populations. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested 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%2F1057https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1057Tue, 13 Oct 2015 12:00:49 +0100Collected Evidence: Collected Evidence: Red-eared terrapin: Search and removal using sniffer dogs No evidence was captured on the success of use of sniffer dogs in removing red-eared terrapins. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested 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%2F1058https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1058Tue, 13 Oct 2015 12:02:19 +0100Collected Evidence: Collected Evidence: Red-eared terrapin: Public education No evidence was captured on the impact of education programmes on reduction of red-eared terrapin populations. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested 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%2F1060https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1060Tue, 13 Oct 2015 12:06:51 +0100Collected Evidence: Collected Evidence: Ponto-Caspian gobies: Biological control using native predators No evidence was captured on the deliberate introduction of a native predator to biologically control gobies. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested 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%2F1061https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1061Tue, 13 Oct 2015 12:11:55 +0100Collected Evidence: Collected Evidence: Ponto-Caspian gobies: Biological control of beneficial species No evidence was found for reducing or controlling goby population size by reducing the population of co-occurring beneficial species. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested 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%2F1062https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1062Tue, 13 Oct 2015 12:13:05 +0100Collected Evidence: Collected Evidence: Ponto-Caspian gobies: Application of a biocide No evidence was captured on the use of biocide to control populations of the round goby or the tubenose goby. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested 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%2F1063https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1063Tue, 13 Oct 2015 12:14:34 +0100Collected Evidence: Collected Evidence: Ponto-Caspian gobies: Habitat manipulation No evidence was captured on the use of habitat manipulation to control invasive goby populations. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested 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%2F1064https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1064Tue, 13 Oct 2015 12:15:40 +0100Collected Evidence: Collected Evidence: Ponto-Caspian gobies: Draining invaded waterbodies No evidence was captured for use of draining waterbodies to reduce the population size of invasive gobies. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested 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%2F1065https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1065Tue, 13 Oct 2015 12:17:00 +0100Collected Evidence: Collected Evidence: Ponto-Caspian gobies: Netting No evidence was captured on the use of seine netting to control goby populations. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested 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%2F1066https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1066Tue, 13 Oct 2015 12:18:10 +0100Collected Evidence: Collected Evidence: Ponto-Caspian gobies: Electrofishing No evidence was captured for use of electrofishing to reduce the population size of invasive gobies. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested 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%2F1067https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1067Tue, 13 Oct 2015 12:19:17 +0100Collected Evidence: Collected Evidence: Ponto-Caspian gobies: Using a combination of netting and electrofishing No evidence was captured on the use of a combination of electrofishing and gill netting to control goby populations. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested 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%2F1068https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1068Tue, 13 Oct 2015 12:20:20 +0100Collected Evidence: Collected Evidence: Ponto-Caspian gobies: Trapping using visual, sound and pheromonal lures No evidence was captured on trapping Ponto-Caspian gobies using sound or pheromonal lures. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested 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%2F1069https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1069Tue, 13 Oct 2015 12:21:55 +0100
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.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read the latest volume: Volume 21

Go to the CE Journal

Discover more on our blog

Our blog contains the latest news and updates from the Conservation Evidence team, the Conservation Evidence Journal, and our global partners in evidence-based conservation.


Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape ProgrammeRed List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Mauritian Wildlife Supporting Conservation Leaders
Sustainability Dashboard National Biodiversity Network Frog Life The international journey of Conservation - Oryx Cool Farm Alliance UNEP AWFA Bat Conservation InternationalPeople trust for endangered species Vincet Wildlife Trust