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Harper, David M.; Smart, Andrew C.; Coley, S.; Schmitz, Sophie; Beauregard, Anne-Christine Gouder de; North, R.; Adams, Christopher S.; Obade, Paul; Kamau, Mbogo

doi:10.1023/a:1023330614984

Cited by 29 publications

(2 citation statements)

References 18 publications

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“…The surveys were carried out between April and October 2016, encompassing the period of greatest activity for semi-aquatic reptiles in the region (Salvador 1998). This trapping method of capture is also effective in estimating the presence of fish and crayfishes (Johnson et al 1992;Harper et al 2002). The captured fishes were classified as alien species following Doadrio (2001).…”

Section: Sampling and Habitat Characterisationmentioning

confidence: 99%

Patterns of occurrence of semi-aquatic reptiles in highly invaded Mediterranean rivers

Escoriza¹

2018

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The fluvial systems in the north-east of the Iberian Peninsula are highly disturbed habitats, with widespread occurrence of alien species. Previous studies have shown that alien species have a major impact on native freshwater fauna, but it is not known what effect they have on semi-aquatic reptiles. Here the author investigated the factors that influence the occurrence of three species of semi-aquatic reptiles, one turtle (Mauremys leprosa) and two snakes (Natrix astreptophora and Natrix maura), at 261 sites in seven rivers/streams in Girona (north-eastern Spain). The studied semi-aquatic reptiles are habitat generalists which can occupy sections of rivers with altered regimes. The relationships of reptile presence to abiotic niche parameters and the presence of alien species were evaluated, as well as the patterns of pairwise co-occurrence between the reptiles. The presence of alien species did impact one out of three reptiles in this community. The association between both species of natricines was weakly negative, suggesting that interspecific competition does not structure their co-occurrences. The removal of alien species is the most appropriate strategy to preserve the complete diversity of native semi-aquatic reptiles.

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Section: Sampling and Habitat Characterisationmentioning

confidence: 99%

Patterns of occurrence of semi-aquatic reptiles in highly invaded Mediterranean rivers

Escoriza¹

2018

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“…Although our results suggest that the dispersion of P. clarkii in the Yeongsan River basin has little impact on the native biota, its introduction and settlement may not be positive for this freshwater system. P. clarkii has successfully settled on most continents (except Antarctica and Australia) and over time, its abundance was sufficient to change the availability of resources, with its continued exploitation of food resources for native organisms [ 39 , 40 ]. Its settlement in new habitats controls the energy flow in the ecosystem and causes dramatic changes in the organization and function of the ecosystem [ 38 , 41 ].…”

Section: Discussionmentioning

confidence: 99%

Invasion and Dispersion of the Exotic Species Procambarus clarkii (Decapoda Cambaridae) in Yeongsan River Basin, South Korea

Choi

Kim

et al. 2021

Animals

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The introduction of exotic species negatively affects the distribution and interactions within local biological communities in an ecosystem and can threaten ecosystem health. This study aimed to provide the basic data required to manage P. clarkii in the Yeongsan River basin. We identified the dispersion pattern and evaluated the ecosystem risk of this newly introduced species. The distribution survey investigated Procambarus clarkii populations at 25 sites in the Yeongsan River basin over a four-year period. The initial introduction occurred in Jiseok Stream. The larvae of P. clarkii were most abundant in areas with a dense aquatic plant cover, whereas adults preferred silt/clay areas. The alterations in the water flow by the river refurbishment project (carried out in 2012) increased their preferred habitats and contributed to P. clarkii dispersion. However, stable isotope analysis showed that the dispersion has had little effect on the freshwater ecosystem. The interrelationship between P. clarkii (i.e., larvae and adults) and other biological communities has been limited. Although the rapid dispersion by P. clarkii in the Yeongsan River basin has not impacted the freshwater ecosystem, further ecological information is required on how to manage P. clarkii beyond this early stage of invasion.

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Invasive dynamics of the crayfish Procambarus clarkii (Girard, 1852) in the international section of the River Minho (NW of the Iberian Peninsula)

Sousa

Freitas

Мота

et al. 2013

Aquatic Conservation

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ABSTRACT1. Procambarus clarkii (Girard, 1852) is a well-established invasive species in many worldwide aquatic ecosystems and is responsible for several ecological and economic impacts. This study examines the major factors responsible for its invasive dynamics in the international section of the River Minho (north-west Iberian Peninsula).2. Data collected from June 2007 to May 2011 showed that abundance and biomass increased in the first 3 years of sampling, but suffered a decrease in the fourth year. Higher abundance and biomass were always found from May to October. These higher values have a clear relationship with water temperature and probably reflect higher activity and mobility.3. The sex-ratio was 1.08:1 in favour of females; eggs start to appear in May/June and the majority of juveniles in August/September. 4. Information collected in this study is extremely important for future management actions that could be applied to this invasive species. Accordingly, we propose that control actions to minimize P. clarkii impacts in this system, such as intensive trapping, should be applied during late spring/early summer, when the catches are higher, the females are dominant, and before juvenile recruitment.

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Cited by 29 publications

References 18 publications

Patterns of occurrence of semi-aquatic reptiles in highly invaded Mediterranean rivers

Patterns of occurrence of semi-aquatic reptiles in highly invaded Mediterranean rivers

Invasion and Dispersion of the Exotic Species Procambarus clarkii (Decapoda Cambaridae) in Yeongsan River Basin, South Korea

Invasive dynamics of the crayfish Procambarus clarkii (Girard, 1852) in the international section of the River Minho (NW of the Iberian Peninsula)

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