Conservation Evidence: Evidence Data

Collected Evidence: Collected Evidence: Modify grazing regime: Grassland & shrubland Four studies evaluated the effects of modifying grazing regimes in grassland and shrubland on reptile populations. Three studies were in the USA and one was in Australia. COMMUNITY RESPONSE (3 STUDIES) Richness/diversity (3 studies): One replicated site comparison study in the USA found that sites with different grazing intensities had similar reptile diversity. One replicated, site-comparison, paired sites study in Australia found no clear effects of modifying grazing intensities on reptile species richness. One replicated, controlled, before-and-after study in the USA found that areas that were lightly grazed or unmanaged had lower reptile species richness than areas that were heavily grazed in combination with burning. POPULATION RESPONSE (3 STUDIES) Abundance (2 studies): One of two replicated studies (including one site comparison, paired sites study) in the USA and Australia found that plots with lighter grazing had higher lizard abundance than those with heavier grazing in four of five vegetation types. The other study found that the abundance of individual reptile species or species groups remained similar at different grazing intensities. Survival (1 study): One site comparison study in the USA found that survival of Texas horned lizards was higher in moderately grazed than heavily grazed sites. BEHAVIOUR (1 STUDY) Use (1 study): One replicated, controlled, before-and-after study in the USA found that light grazing or heavy grazing and burning had mixed effects on the reptile species that used those areas. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3490https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3490Mon, 06 Dec 2021 11:22:16 +0000Collected Evidence: Collected Evidence: Modify grazing regime: Forest, open woodland & savanna Seven studies evaluated the effects of managing grazing regimes in forest, open woodland and savanna on reptile populations. Six studies were in Australia and one was in the USA. COMMUNITY RESPONSE (3 STUDIES) Richness/diversity (3 studies): One replicated site comparison study in the USA found that sites with different grazing intensities had similar reptile diversity. One replicated, paired, site comparison study in Australia found that farms with rotational grazing did not have higher reptile species richness than farms with continuous grazing. One replicated, site comparison study in Australia found that following replanting of native vegetation, ungrazed or occasionally grazed plots had higher reptile species richness than plots that were continuously grazed. POPULATION RESPONSE (6 STUDIES) Abundance (5 studies): One of three replicated studies (including one randomized, before-and-after study) in the USA and Australia found that areas with lighter grazing had higher lizard abundance than those with heavier grazing. The other two studies found that different grazing regimes had mixed effects on the abundance of lizards and four-clawed geckos and inland snake-eyed skinks. Two paired, site comparison studies (including one replicated study) in Australia found that sites with rotational grazing had similar reptile abundance as sites with continuous grazing. Occupancy/range (1 study): One replicated, site comparison study in Australia found that different grazing regimes had mixed effects on local colonization and extinction events of six lizard species. BEHAVIOUR (1 STUDY) Use (1 study): One replicated, paired, site comparison study in Australia found that jacky dragons were found in sheep-grazed paddocks more frequently than in cattle-grazed paddocks. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3492https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3492Mon, 06 Dec 2021 11:38:49 +0000Collected Evidence: Collected Evidence: Modify grazing regime: Wetland One study evaluated the effects of managing grazing regimes in wetlands on reptile populations. This study was in France. COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (1 STUDY) Abundance (1 study): One controlled before-and-after study in France found that moderate density autumn–winter grazing and autumn–spring marsh flooding resulted in higher abundance of European pond turtles than high density spring–summer grazing and winter–spring marsh flooding or low year-round grazing and flooding. Condition (1 study): One controlled before-and-after study in France found that high-density spring–summer grazing resulted in fewer incidences of trampling compared to moderate-density autumn–winter grazing or low-density year-round grazing. BEHAVIOUR (0 STUDIES)Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3496https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3496Mon, 06 Dec 2021 12:17:07 +0000