Collected Evidence: Collected Evidence: Actively manage water level before/after planting trees/shrubs: brackish/saline wetlandsWe found no studies that evaluated the effects, on vegetation, of actively managing water levels in brackish/saline wetlands planted with trees/shrubs.   ‘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%2F3284https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3284Sat, 10 Apr 2021 17:16:15 +0100Collected Evidence: Collected Evidence: Install physical supports for planted non-woody plants: freshwater wetlands One study evaluated the effects of installing physical supports for emergent, non-woody plants planted in freshwater wetlands. The study was in the Netherlands. VEGETATION COMMUNITY   VEGETATION ABUNDANCE   VEGETATION STRUCTURE Biomass/plant (1 study): One replicated, controlled study at the edge of a freshwater lake in the Netherlands found that supporting planted bulrushes Scirpus with wire mesh had no significant effect on biomass of individual plants after 1–2 years. Stems/plant (1 study): The same study found that supporting planted bulrushes Scirpus with wire mesh had no significant effect on number of shoots/plant after 1–2 years. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3336https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3336Sun, 11 Apr 2021 16:38:18 +0100Collected Evidence: Collected Evidence: Install physical supports for planted non-woody plants: brackish/saline wetlandsWe found no studies that evaluated the effects of installing physical supports for emergent, non-woody plants planted in brackish/saline wetlands.   ‘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%2F3337https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3337Sun, 11 Apr 2021 16:38:28 +0100Collected Evidence: Collected Evidence: Install physical supports for planted trees/shrubs: freshwater wetlandsWe found no studies that evaluated the effects of installing physical supports for trees/shrubs planted in freshwater wetlands.   ‘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%2F3338https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3338Sun, 11 Apr 2021 16:38:46 +0100Collected Evidence: Collected Evidence: Install physical supports for planted trees/shrubs: brackish/saline wetlandsWe found no studies that evaluated the effects of installing physical supports for trees/shrubs planted in brackish/saline wetlands.   ‘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%2F3339https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3339Sun, 11 Apr 2021 16:39:01 +0100Collected Evidence: Collected Evidence: Plant non-woody plants into moisture-retaining peat pots: brackish/saline wetlandsWe found no studies that evaluated the effects of using moisture-retaining peat pots when planting emergent, non-woody vegetation in brackish/saline wetlands.   ‘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%2F3342https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3342Sun, 11 Apr 2021 16:46:08 +0100Collected Evidence: Collected Evidence: Allow plants to adjust to field conditions before plantingWe found no studies that evaluated the effects of allowing emergent vegetation to adjust to field conditions before planting in wetlands.   ‘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%2F3349https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3349Sun, 11 Apr 2021 16:56:48 +0100Collected Evidence: Collected Evidence: Add root-associated fungi to plants before plantingWe found no studies that evaluated the effects – on emergent wetland plants – of adding root-associated fungi before planting.   ‘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%2F3350https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3350Sun, 11 Apr 2021 16:59:38 +0100Collected Evidence: Collected Evidence: Apply root dip to non-woody plants before planting: freshwater wetlandsWe found no studies that evaluated the effects – on emergent, non-woody plants typical of freshwater wetlands – of applying a non-fungal root dip before planting.   ‘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%2F3351https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3351Sun, 11 Apr 2021 17:12:52 +0100Collected Evidence: Collected Evidence: Apply root dip to non-woody plants before planting: brackish/saline wetlands One study evaluated the effects – on emergent, non-woody plants typical of brackish/saline wetlands – of applying a non-fungal root dip before planting. The study was in the USA. VEGETATION COMMUNITY   VEGETATION ABUNDANCE Individual species abundance (1 study): One replicated, randomized, paired, controlled study on mudflats in the USA found that root-dipping smooth cordgrass Spartina alterniflora before planting had mixed effects on cordgrass density after 1–2 growing seasons, but never increased it. VEGETATION STRUCTURE Height (1 study): One replicated, randomized, paired, controlled study on mudflats in the USA found that root-dipping smooth cordgrass Spartina alterniflora before planting had mixed effects on cordgrass height after two growing seasons. OTHER Survival (1 study): One replicated, randomized, paired, controlled study on mudflats in the USA found that root-dipped smooth cordgrass Spartina alterniflora plants typically had a lower survival rate, after one growing season, than plants that had not been root-dipped. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3352https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3352Sun, 11 Apr 2021 17:13:05 +0100Collected Evidence: Collected Evidence: Apply root dip to trees/shrubs before planting: freshwater wetlandsWe found no studies that evaluated the effects – on trees/shrubs typical of freshwater wetlands – of applying a non-fungal root dip before planting.   ‘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%2F3353https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3353Sun, 11 Apr 2021 17:13:16 +0100Collected Evidence: Collected Evidence: Apply root dip to trees/shrubs before planting: brackish/saline wetlandsWe found no studies that evaluated the effects – on trees/shrubs typical of brackish/saline wetlands – of applying a non-fungal root dip before planting.   ‘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%2F3354https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3354Sun, 11 Apr 2021 17:13:29 +0100Collected Evidence: Collected Evidence: Chill seeds of non-woody plants before sowing: freshwater wetlands Six studies evaluated the effects – on emergent, non-woody plants typical of freshwater wetlands – of chilling their seeds before sowing. All six studies were in the USA. Five of the studies were in laboratories or greenhouses. VEGETATION COMMUNITY   VEGETATION ABUNDANCE   VEGETATION STRUCTURE   OTHER Germination/emergence (6 studies): All six replicated, controlled studies in the USA found that chilling (at 1–10°C) seeds of herbaceous plants before sowing either increased or had no significant effect on their germination rate. Within studies, the direction and/or size of the effect depended on factors such as the duration of chilling, species, conditions (light/temperature) after sowing, and sowing site (restored vs natural meadows). One replicated, randomized, controlled study in the USA found that freezing sawgrass Cladium jamaicense seeds before sowing reduced their germination rate. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3367https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3367Mon, 12 Apr 2021 07:33:28 +0100Collected Evidence: Collected Evidence: Chill seeds of non-woody plants before sowing: brackish/saline wetlandsWe found no studies that evaluated the effects – on emergent, non-woody plants typical of brackish/saline wetlands – of chilling their seeds before sowing.   ‘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%2F3368https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3368Mon, 12 Apr 2021 07:33:39 +0100Collected Evidence: Collected Evidence: Chill tree/shrub seeds before sowing: freshwater wetlandsWe found no studies that evaluated the effects – on trees/shrubs typical of freshwater wetlands – of chilling their seeds before sowing.   ‘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%2F3369https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3369Mon, 12 Apr 2021 07:33:49 +0100Collected Evidence: Collected Evidence: Chill tree/shrub seeds before sowing: brackish/saline wetlandsWe found no studies that evaluated the effects – on trees/shrubs typical of brackish/saline wetlands – of chilling their seeds before sowing.   ‘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%2F3370https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3370Mon, 12 Apr 2021 07:33:57 +0100Collected Evidence: Collected Evidence: Heat seeds of non-woody plants before sowing: freshwater wetlands One study evaluated the effects – on emergent, non-woody plants typical of freshwater wetlands – of heating their seeds before sowing. The study was in a greenhouse in the USA. VEGETATION COMMUNITY   VEGETATION ABUNDANCE   VEGETATION STRUCTURE   OTHER Germination/emergence (1 study): One replicated, randomized, controlled study in a greenhouse in the USA found that sawgrass Cladium jamaicense seeds dipped in hot water or dried in an oven before sowing had a similar germination rate to seeds that had not been heated. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3371https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3371Mon, 12 Apr 2021 07:43:44 +0100Collected Evidence: Collected Evidence: Heat seeds of non-woody plants before sowing: brackish/saline wetlandsWe found no studies that evaluated the effects – on emergent, non-woody plants typical of brackish/saline wetlands – of heating their seeds before sowing.   ‘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%2F3372https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3372Mon, 12 Apr 2021 07:43:54 +0100Collected Evidence: Collected Evidence: Heat tree/shrub seeds before sowing: freshwater wetlands One study evaluated the effects – on trees/shrubs typical of freshwater wetlands – of heating their seeds before sowing. The study was in a laboratory in the USA. VEGETATION COMMUNITY   VEGETATION ABUNDANCE   VEGETATION STRUCTURE          OTHER Germination/emergence (1 study): One replicated, controlled study in a laboratory in the USA found that heating baldcypress Taxodium distichum seeds in a flame before sowing reduced their germination rate. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3373https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3373Mon, 12 Apr 2021 07:44:05 +0100Collected Evidence: Collected Evidence: Heat tree/shrub seeds before sowing: brackish/saline wetlandsWe found no studies that evaluated the effects – on trees/shrubs typical of brackish/saline wetlands – of heating their seeds before sowing.   ‘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%2F3374https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3374Mon, 12 Apr 2021 07:44:18 +0100Collected Evidence: Collected Evidence: Expose seeds to light before sowingWe found no studies that evaluated the effects – on emergent wetland plants – of exposing their seeds to light before sowing.   ‘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%2F3375https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3375Mon, 12 Apr 2021 08:22:11 +0100Collected Evidence: Collected Evidence: Physically damage seeds of non-woody plants before sowing: freshwater wetlands Three studies evaluated the effects – on emergent, non-woody plants typical of freshwater wetlands – of physically damaging their seeds before sowing. All three studies were in greenhouses or laboratories in the USA. VEGETATION COMMUNITY   VEGETATION ABUNDANCE   VEGETATION STRUCTURE   OTHER Germination/emergence (3 studies): Two replicated, controlled studies (one also randomized) in greenhouses in the USA found that rubbing seeds of herbaceous plants with sandpaper before sowing had no significant effect on their germination rate. One replicated, randomized, paired, controlled study in a laboratory in the USA found that removing the sac-like seed coating before sowing typically increased, and did not reduce, the germination rate of sedges Carex spp. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3376https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3376Mon, 12 Apr 2021 08:22:24 +0100Collected Evidence: Collected Evidence: Physically damage seeds of non-woody plants before sowing: brackish/saline wetlandsWe found no studies that evaluated the effects – on emergent, non-woody plants typical of brackish/saline wetlands – of physically damaging their seeds before sowing.   ‘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%2F3377https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3377Mon, 12 Apr 2021 08:22:39 +0100Collected Evidence: Collected Evidence: Physically damage tree/shrub seeds before sowing: freshwater wetlands One study evaluated the effects – on trees/shrubs typical of freshwater wetlands – of physically damaging their seeds before sowing. The study was in a laboratory in the USA. VEGETATION COMMUNITY   VEGETATION ABUNDANCE   VEGETATION STRUCTURE          OTHER Germination/emergence (1 study): One replicated, controlled study in a laboratory in the USA found that cutting baldcypress Taxodium distichum seeds in half before sowing reduced their germination rate. Growth (1 study): The same study found that cutting baldcypress Taxodium distichum seeds in half before sowing had no significant effect on the height of surviving seedlings, 30 days after germination. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3378https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3378Mon, 12 Apr 2021 08:22:48 +0100Collected Evidence: Collected Evidence: Physically damage tree/shrub seeds before sowing: brackish/saline wetlandsWe found no studies that evaluated the effects – on trees/shrubs typical of brackish/saline wetlands – of physically damaging their seeds before sowing.   ‘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%2F3379https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3379Mon, 12 Apr 2021 08:23:06 +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.

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