The Experts below are selected from a list of 312 Experts worldwide ranked by ideXlab platform
A. Evette - One of the best experts on this subject based on the ideXlab platform.
-
ecological restoration under pressure from invasive animal species use of salicaceae cuttings in a river bank overrun by Coypu
River Research and Applications, 2014Co-Authors: V. Breton, O. Forestier, O. Guindon, A. EvetteAbstract:Numerous studies have established the fundamental ecological role of riparian zones as well as the main threats they face, for example, by invasive species. Our study concerns a section of a gently sloping river in the western part of France where the Coypu, an invasive aquatic rodent, damages streambanks and prevents the regeneration of natural vegetation. The aim was to assess the efficacy of different species used in bioengineering projects for streambank protection and for the restoration of woody habitats. A field experiment was established close to the river bank with cuttings of several woody species belonging to the Salicaceae family. The test consisted in comparing the following: (i) different species (six willows and one poplar); (ii) different cutting sizes; and (iii) the presence or absence of fencing (to protect against Coypus). The experiment was conducted over three growing seasons (2009–2011). The measured response variables were the survivorship and the growth expressed firstly by the length and the number of shoots, and secondly by the height of plants. The results showed the following: (i) high growth and survivorship rates for all tested species, notwithstanding some significant differences between species; and (ii) positive effects of both the fencing and the planting of longer cuttings. After three growing seasons, Salix viminalis showed the highest growth in exclosures with a mean cumulative shoot length of 7.1 m, whereas outside exclosures S. purpurea had the highest growth with a mean cumulative shoot length of 3.9 m. Populus nigra and S. purpurea showed the lowest number of stems browsed by the Coypu. The different methods were also compared for cost and time-to-establishment: the long cuttings of certain species afford a positive effect as significant as fencing (which is more expensive). Such analyses are useful when it is necessary to strike a balance between cost and efficiency, particularly in the context of invasiveness. Copyright © 2013 John Wiley & Sons, Ltd.
-
Ecological restoration under pressure from invasive animal species: use of Salicaceae cuttings in a river bank overrun by Coypu
River Research and Applications, 2014Co-Authors: V. Breton, O. Forestier, O. Guindon, A. EvetteAbstract:Numerous studies have established the fundamental ecological role of riparian zones as well as the main threats they face, e.g., by invasive species. Our study concerns a section of a gently sloping river in the western part of France where the Coypu, an invasive aquatic rodent, damages streambanks and prevents the regeneration of natural vegetation. The aim was to assess the efficacy of different species used in bioengineering projects for streambank protection and for the restoration of woody habitats. A field experiment was established close to the river bank with cuttings of several woody species belonging to the Salicaceae family. The test consisted in comparing (i) different species (six willows and one poplar), (ii) different cutting sizes, and (iii) the presence or absence of fencing (to protect against Coypus). The experiment was conducted over three growing seasons (2009 to 2011). The measured response variables were the survivorship and the growth expressed firstly by the length and the number of shoots, and secondly by the height of plants. The results showed: (i) high growth and survivorship rates for all tested species, notwithstanding some significant differences between species; (ii) positive effects of both the fencing and the planting of longer cuttings. After three growing seasons, Salix viminalis showed the highest growth in exclosures with a mean cumulative shoot length of 7.1 m, whereas outside exclosures Salix purpurea had the highest growth with a mean cumulative shoot length of 3.9 m. Populus nigra and S. purpurea showed the lowest number of stems browsed by the Coypu. The different methods were also compared for cost and time-to-establishment: the long cuttings of certain species afford a positive effect as significant as fencing (which is more expensive). Such analyses are useful when it is necessary to strike a balance between cost and efficiency, particularly in the context of invasiveness.
V. Breton - One of the best experts on this subject based on the ideXlab platform.
-
ecological restoration under pressure from invasive animal species use of salicaceae cuttings in a river bank overrun by Coypu
River Research and Applications, 2014Co-Authors: V. Breton, O. Forestier, O. Guindon, A. EvetteAbstract:Numerous studies have established the fundamental ecological role of riparian zones as well as the main threats they face, for example, by invasive species. Our study concerns a section of a gently sloping river in the western part of France where the Coypu, an invasive aquatic rodent, damages streambanks and prevents the regeneration of natural vegetation. The aim was to assess the efficacy of different species used in bioengineering projects for streambank protection and for the restoration of woody habitats. A field experiment was established close to the river bank with cuttings of several woody species belonging to the Salicaceae family. The test consisted in comparing the following: (i) different species (six willows and one poplar); (ii) different cutting sizes; and (iii) the presence or absence of fencing (to protect against Coypus). The experiment was conducted over three growing seasons (2009–2011). The measured response variables were the survivorship and the growth expressed firstly by the length and the number of shoots, and secondly by the height of plants. The results showed the following: (i) high growth and survivorship rates for all tested species, notwithstanding some significant differences between species; and (ii) positive effects of both the fencing and the planting of longer cuttings. After three growing seasons, Salix viminalis showed the highest growth in exclosures with a mean cumulative shoot length of 7.1 m, whereas outside exclosures S. purpurea had the highest growth with a mean cumulative shoot length of 3.9 m. Populus nigra and S. purpurea showed the lowest number of stems browsed by the Coypu. The different methods were also compared for cost and time-to-establishment: the long cuttings of certain species afford a positive effect as significant as fencing (which is more expensive). Such analyses are useful when it is necessary to strike a balance between cost and efficiency, particularly in the context of invasiveness. Copyright © 2013 John Wiley & Sons, Ltd.
-
Ecological restoration under pressure from invasive animal species: use of Salicaceae cuttings in a river bank overrun by Coypu
River Research and Applications, 2014Co-Authors: V. Breton, O. Forestier, O. Guindon, A. EvetteAbstract:Numerous studies have established the fundamental ecological role of riparian zones as well as the main threats they face, e.g., by invasive species. Our study concerns a section of a gently sloping river in the western part of France where the Coypu, an invasive aquatic rodent, damages streambanks and prevents the regeneration of natural vegetation. The aim was to assess the efficacy of different species used in bioengineering projects for streambank protection and for the restoration of woody habitats. A field experiment was established close to the river bank with cuttings of several woody species belonging to the Salicaceae family. The test consisted in comparing (i) different species (six willows and one poplar), (ii) different cutting sizes, and (iii) the presence or absence of fencing (to protect against Coypus). The experiment was conducted over three growing seasons (2009 to 2011). The measured response variables were the survivorship and the growth expressed firstly by the length and the number of shoots, and secondly by the height of plants. The results showed: (i) high growth and survivorship rates for all tested species, notwithstanding some significant differences between species; (ii) positive effects of both the fencing and the planting of longer cuttings. After three growing seasons, Salix viminalis showed the highest growth in exclosures with a mean cumulative shoot length of 7.1 m, whereas outside exclosures Salix purpurea had the highest growth with a mean cumulative shoot length of 3.9 m. Populus nigra and S. purpurea showed the lowest number of stems browsed by the Coypu. The different methods were also compared for cost and time-to-establishment: the long cuttings of certain species afford a positive effect as significant as fencing (which is more expensive). Such analyses are useful when it is necessary to strike a balance between cost and efficiency, particularly in the context of invasiveness.
O. Guindon - One of the best experts on this subject based on the ideXlab platform.
-
ecological restoration under pressure from invasive animal species use of salicaceae cuttings in a river bank overrun by Coypu
River Research and Applications, 2014Co-Authors: V. Breton, O. Forestier, O. Guindon, A. EvetteAbstract:Numerous studies have established the fundamental ecological role of riparian zones as well as the main threats they face, for example, by invasive species. Our study concerns a section of a gently sloping river in the western part of France where the Coypu, an invasive aquatic rodent, damages streambanks and prevents the regeneration of natural vegetation. The aim was to assess the efficacy of different species used in bioengineering projects for streambank protection and for the restoration of woody habitats. A field experiment was established close to the river bank with cuttings of several woody species belonging to the Salicaceae family. The test consisted in comparing the following: (i) different species (six willows and one poplar); (ii) different cutting sizes; and (iii) the presence or absence of fencing (to protect against Coypus). The experiment was conducted over three growing seasons (2009–2011). The measured response variables were the survivorship and the growth expressed firstly by the length and the number of shoots, and secondly by the height of plants. The results showed the following: (i) high growth and survivorship rates for all tested species, notwithstanding some significant differences between species; and (ii) positive effects of both the fencing and the planting of longer cuttings. After three growing seasons, Salix viminalis showed the highest growth in exclosures with a mean cumulative shoot length of 7.1 m, whereas outside exclosures S. purpurea had the highest growth with a mean cumulative shoot length of 3.9 m. Populus nigra and S. purpurea showed the lowest number of stems browsed by the Coypu. The different methods were also compared for cost and time-to-establishment: the long cuttings of certain species afford a positive effect as significant as fencing (which is more expensive). Such analyses are useful when it is necessary to strike a balance between cost and efficiency, particularly in the context of invasiveness. Copyright © 2013 John Wiley & Sons, Ltd.
-
Ecological restoration under pressure from invasive animal species: use of Salicaceae cuttings in a river bank overrun by Coypu
River Research and Applications, 2014Co-Authors: V. Breton, O. Forestier, O. Guindon, A. EvetteAbstract:Numerous studies have established the fundamental ecological role of riparian zones as well as the main threats they face, e.g., by invasive species. Our study concerns a section of a gently sloping river in the western part of France where the Coypu, an invasive aquatic rodent, damages streambanks and prevents the regeneration of natural vegetation. The aim was to assess the efficacy of different species used in bioengineering projects for streambank protection and for the restoration of woody habitats. A field experiment was established close to the river bank with cuttings of several woody species belonging to the Salicaceae family. The test consisted in comparing (i) different species (six willows and one poplar), (ii) different cutting sizes, and (iii) the presence or absence of fencing (to protect against Coypus). The experiment was conducted over three growing seasons (2009 to 2011). The measured response variables were the survivorship and the growth expressed firstly by the length and the number of shoots, and secondly by the height of plants. The results showed: (i) high growth and survivorship rates for all tested species, notwithstanding some significant differences between species; (ii) positive effects of both the fencing and the planting of longer cuttings. After three growing seasons, Salix viminalis showed the highest growth in exclosures with a mean cumulative shoot length of 7.1 m, whereas outside exclosures Salix purpurea had the highest growth with a mean cumulative shoot length of 3.9 m. Populus nigra and S. purpurea showed the lowest number of stems browsed by the Coypu. The different methods were also compared for cost and time-to-establishment: the long cuttings of certain species afford a positive effect as significant as fencing (which is more expensive). Such analyses are useful when it is necessary to strike a balance between cost and efficiency, particularly in the context of invasiveness.
O. Forestier - One of the best experts on this subject based on the ideXlab platform.
-
ecological restoration under pressure from invasive animal species use of salicaceae cuttings in a river bank overrun by Coypu
River Research and Applications, 2014Co-Authors: V. Breton, O. Forestier, O. Guindon, A. EvetteAbstract:Numerous studies have established the fundamental ecological role of riparian zones as well as the main threats they face, for example, by invasive species. Our study concerns a section of a gently sloping river in the western part of France where the Coypu, an invasive aquatic rodent, damages streambanks and prevents the regeneration of natural vegetation. The aim was to assess the efficacy of different species used in bioengineering projects for streambank protection and for the restoration of woody habitats. A field experiment was established close to the river bank with cuttings of several woody species belonging to the Salicaceae family. The test consisted in comparing the following: (i) different species (six willows and one poplar); (ii) different cutting sizes; and (iii) the presence or absence of fencing (to protect against Coypus). The experiment was conducted over three growing seasons (2009–2011). The measured response variables were the survivorship and the growth expressed firstly by the length and the number of shoots, and secondly by the height of plants. The results showed the following: (i) high growth and survivorship rates for all tested species, notwithstanding some significant differences between species; and (ii) positive effects of both the fencing and the planting of longer cuttings. After three growing seasons, Salix viminalis showed the highest growth in exclosures with a mean cumulative shoot length of 7.1 m, whereas outside exclosures S. purpurea had the highest growth with a mean cumulative shoot length of 3.9 m. Populus nigra and S. purpurea showed the lowest number of stems browsed by the Coypu. The different methods were also compared for cost and time-to-establishment: the long cuttings of certain species afford a positive effect as significant as fencing (which is more expensive). Such analyses are useful when it is necessary to strike a balance between cost and efficiency, particularly in the context of invasiveness. Copyright © 2013 John Wiley & Sons, Ltd.
-
Ecological restoration under pressure from invasive animal species: use of Salicaceae cuttings in a river bank overrun by Coypu
River Research and Applications, 2014Co-Authors: V. Breton, O. Forestier, O. Guindon, A. EvetteAbstract:Numerous studies have established the fundamental ecological role of riparian zones as well as the main threats they face, e.g., by invasive species. Our study concerns a section of a gently sloping river in the western part of France where the Coypu, an invasive aquatic rodent, damages streambanks and prevents the regeneration of natural vegetation. The aim was to assess the efficacy of different species used in bioengineering projects for streambank protection and for the restoration of woody habitats. A field experiment was established close to the river bank with cuttings of several woody species belonging to the Salicaceae family. The test consisted in comparing (i) different species (six willows and one poplar), (ii) different cutting sizes, and (iii) the presence or absence of fencing (to protect against Coypus). The experiment was conducted over three growing seasons (2009 to 2011). The measured response variables were the survivorship and the growth expressed firstly by the length and the number of shoots, and secondly by the height of plants. The results showed: (i) high growth and survivorship rates for all tested species, notwithstanding some significant differences between species; (ii) positive effects of both the fencing and the planting of longer cuttings. After three growing seasons, Salix viminalis showed the highest growth in exclosures with a mean cumulative shoot length of 7.1 m, whereas outside exclosures Salix purpurea had the highest growth with a mean cumulative shoot length of 3.9 m. Populus nigra and S. purpurea showed the lowest number of stems browsed by the Coypu. The different methods were also compared for cost and time-to-establishment: the long cuttings of certain species afford a positive effect as significant as fencing (which is more expensive). Such analyses are useful when it is necessary to strike a balance between cost and efficiency, particularly in the context of invasiveness.
Sandro Bertolino - One of the best experts on this subject based on the ideXlab platform.
-
evaluating the effectiveness of footprint platforms to detect invasive mammals Coypu myocastor Coypus as a case study
Mammalian Biology, 2020Co-Authors: Davide Roviani, Patrick Artioli, Sandro BertolinoAbstract:Effective and easy-to-apply monitoring techniques are necessary to detect alien species at their first stage of invasion, allowing rapid removal or delimitation of the invaded range for eradication or control actions. Monitoring tools should be effective in detecting the target species, reduce false absences and allow an early detection. The Coypu (Myocastor Coypus) is a large semi-aquatic rodent native to subtropical and temperate South America, introduced all over the world for its valuable fur. We tested tracking plates in the framework of a Coypu occupancy study to take into account false absences and define a standardized monitoring protocol for the species with a limited engagement of staff. We set 60 linear transects, each with 3 tracking plates, along artificial water bodies within the rice district in northwestern Italy and checked them for six consecutive days. For the analyses, we fitted single-season occupancy models to our detection history data. We detected Coypu presence at least once in 29 out of the 60 investigated transects (48%). When modeling occupancy and detection probability constant in time and space, the estimate Ψ was 0.48 and detection probability p was 0.60. A minimum of four consecutive visits to the transects provided reliable detection. Coypu’s probability of presence was significantly driven by the amount of surface covered by rice plantations around the investigated water courses. The proposed method may function as a tool for the rapid detection of Coypu on large-scale monitoring projects and in case of new colonization, and as a basis for subsequent prompt control actions.
-
interactions between Coypu myocastor coy pus and bird nests in three mediterranean wetlands of central italy
Hystrix-italian Journal of Mammalogy, 2012Co-Authors: Sandro Bertolino, Christian Angelici, Ernesto Monaco, Andrea Monaco, Dario CapizziAbstract:We evaluated the possible predation on eggs and the disturbance to water- bird nests by Coypus by monitoring the breeding success of four bird species and a sample of dummy and natural nests by photo-cameras. The monitoring of waterbirds activity showed that 14.8% of Fulica atra and 9.5% of Gallinula chloropus nests failed, possibly as a consequence of disturbance by Coypus. In 2009, 7.4% of ground dummy nests and 10.8% of water dummy nests showed signs of Coypu activity with eggs either preyed or removed. Camera surveys confirmed that Coypus used the nests as resting platforms, thus destroying or sinking the eggs. This study showed that in areas with high Coypu density the disturb- ance to bird nests floating amid the vegetation or built in open water may be severe.
-
long term cost effectiveness of Coypu myocastor Coypus control in piedmont italy
Biological Invasions, 2010Co-Authors: Sandro Bertolino, Ramona ViterbiAbstract:We used the results of a permanent Coypu control program to perform a cost-benefit analysis. The Coypu colonization of Piedmont was followed by a constant increase of agricultural damage from 1997 to 2000, and its subsequent decrease from 2000 to 2005. Despite the increase of Coypu’s range, the control effort managed to stop the increase of the damage and start a gradual reduction in the period 2000–2002. This control effort kept on increasing until 2005 (when it was 7.5 times higher than in 2000), but its costs were compensated by the reduction of the damage. In 2005, the benefit-cost ratio was calculated to be 2.6:1 and 3.8:1, according to two different scenarios. Coypu are controlled in many countries so as to reduce the damage and to oppose the relative threat to biodiversity. The outcomes are often negative and this is probably due to the inadequacy of the efforts. In this study we illustrate a permanent control program which was implemented to limit the crop-damage in Piedmont and proved successful and cost-effective.
-
modelling the distribution of an introduced species the Coypu myocastor Coypus mammalia rodentia in piedmont region nw italy
Italian Journal of Zoology, 2009Co-Authors: Sandro Bertolino, B L IngegnoAbstract:Model‐based analyses of species–habitat relationships can help to clarify which factors influence the establishment and spread of species. The Coypu (Myocastor Coypus) is a semi‐aquatic rodent native to South America, which has been introduced worldwide, including Italy. We used logistic regression to analyse the species distribution according to habitat attributes of agro‐ecosystems in Piedmont Region. The resulting model correctly predicted the presence and absence of the Coypu in the initial data and also in the part of the study area used for cross‐validation. Our analysis confirmed that the Coypu is a typical lowland species, which particularly uses flat areas below 300 m a.s.l. The presence of Coypus was strongly correlated with the presence of rice fields. During the rice‐growing season, a network of canals with running water enables them to colonize this vast area. On the other hand, Coypus are less likely to be present where the surface covered by woodlands and urban areas, other crops patches de...
-
population control of Coypu myocastor Coypus in italy compared to eradication in uk a cost benefit analysis
Wildlife Biology, 2007Co-Authors: Manuela Panzacchi, R Cocchi, Piero Genovesi, Sandro BertolinoAbstract:Abstract Invasive alien species rank among the world's greatest threats to biodiversity and cause huge economic losses. Eradication is a key management strategy for newly introduced pests, but it is frequently discarded due to the high costs. When populations become established and conflicts increase, policy-makers often resort to permanent population control. However, no cost-benefit analyses have been carried out so far to compare the two alternatives. We present the first cost-benefit analysis by comparing the permanent control campaign of Coypu Myocastor Coypus in Italy with the successful eradication carried out in UK in the 1980s. Data regarding the eradication came from literature, while costs and benefits of control were quantified through a national survey. In Italy, during 1995-2000, the damage amounted to € 11,631,721, control activities cost € 2,614,408, and 220,688 Coypu were removed. Control campaigns did not stop the population expansion nor the increase in damage and economic losses at a n...
