Tracking the origin of the invading Caulerpa (Caulerpales, Chlorophyta) with Geographic Profiling, a criminological technique for a killer alga

Papini, Alessio; Mosti, Stefano; Santosuosso, Ugo

doi:10.1007/s10530-012-0396-5

Cited by 34 publications

(33 citation statements)

References 30 publications

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“…; Papini et al. ) as well as intentional mass releases of species, particularly in agriculture, aquaculture and via recreational activities. Through both pathways, many organisms have been distributed far beyond their natural barriers (Kolar and Lodge ; Laikre et al.…”

Section: Introductionmentioning

confidence: 99%

Population differentiation of zander (Sander lucioperca) across native and newly colonized ranges suggests increasing admixture in the course of an invasion

Eschbach

Nolte

Kohlmann

et al. 2014

Evolutionary Applications

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In addition to ecological factors, evolutionary processes can determine the invasion success of a species. In particular, genetic admixture has the potential to induce rapid evolutionary change, which can result from natural or human-assisted secondary contact between differentiated populations. We studied the recent range expansion of zander in Germany focusing on the interplay between invasion and genetic admixture. Historically, the rivers Elbe and Danube harboured the most north-western source populations from which a north-westward range expansion occurred. This was initiated by introducing zander outside its native range into rivers and lakes, and was fostered by migration through artificial canals and stocking from various sources. We analysed zander populations of the native and invaded ranges using nuclear and mitochondrial genetic markers. Three genetic lineages were identified, which were traced to ancestral ranges. Increased genetic diversity and admixture in the invaded region highlighted asymmetric gene flow towards this area. We suppose that the adaptive potential of the invading populations was promoted by genetic admixture, whereas competitive exclusion in the native areas provided a buffer against introgression by novel genotypes. These explanations would be in line with evidence that hybridization can drive evolutionary change under conditions when new niches can be exploited.

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Section: Introductionmentioning

confidence: 99%

Population differentiation of zander (Sander lucioperca) across native and newly colonized ranges suggests increasing admixture in the course of an invasion

Eschbach

Nolte

Kohlmann

et al. 2014

Evolutionary Applications

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show abstract

“…America, sometimes with harmful or unpredictable effects on native fauna and flora, becoming a major threat of extinction on indigenous species (Cini et al 2014;Papini et al 2013;Sansosuosso and Papini, 2016;Vitousek et al 1996;Wilcover et al 1998), also altering the abiotic environment and spreading pathogens in the territory (Strayer et al 2006;Ricciardi & Cohen 2007;Stevenson et al 2012). Human intervention is not a negligible factor in this "migration."…”

Section: Species Endemic Of Other Continents Have Begun To Appear In mentioning

confidence: 99%

“…To reduce the damage, besides various methods of reducing the spread of invasive species, recently various methods have been applied to discover the location of the first invasion site and monitoring the progress in the territory of these species (Papini et al 2013). These methods are often derived from other fields of science.…”

Section: Species Endemic Of Other Continents Have Begun To Appear In mentioning

confidence: 99%

Geo-Profiling: beyond the Current Limits. A Preliminary Study of Mathematical Methods to Improve the Monitoring of Invasive Species

Santosuosso

Papini

2018

Russ J Ecol

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The Geographic Profiling (GP) is a data analysis tool that has great potential. Presently, it is used only minimally, and is almost always used "as it is", independently on other analysis or data processing methods. GP was initially created as a forensic tool, to find the origin of a series of events (crimes) done by a single actor. However, using this method in integration with others, it is possible to enlarge the opportunities of geographical data analysis. The promising results of this method in integration with others, even if some of them are quite well known methods since many years-and thus well tested-show a number of further possible applications. Here we treat data clustering and partitioning with Kmeans and Dbscan methods; space partitioning (Voronoi tessellation) and a method to assign weights to the events constituting the data set.

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“…This seaweed, introduced in the NW Mediterranean about 20 years ago, has the potential to reduce the abundance of encrusting, turf-forming and erect macroalgae, ultimately decreasing species richness, total cover and spatial variability of native assemblages (Piazzi et al, 2001;Bulleri et al, 2010;Gennaro & Piazzi, 2011;Papini et a., 2013;Tamburello et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Peer Review #2 of "The effects of an invasive seaweed on native communities vary along a gradient of land-based human impacts (v0.1)"

2016

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The difficulty in teasing apart the effects of biological invasions from those of other anthropogenic perturbations has hampered our understanding of the mechanisms underpinning the global biodiversity crisis. The recent elaboration of global-scale maps of cumulative human impacts provides a unique opportunity to assess how the impact of invaders varies among areas exposed to different anthropogenic activities. A recent metaanalysis has shown that the effects of invasive seaweeds on native biota tend to be more negative in relatively pristine than in human impacted environments. Here, we tested this hypothesis through the experimental removal of the invasive green seaweed, Caulerpa cylindracea, from rocky reefs across the Mediterranean Sea. More specifically, we assessed which out of land-based and sea-based cumulative impact scores was a better predictor of the direction and magnitude of the effects of this seaweed on extant and recovering native assemblages. Approximately 15 months after the start of the experiment, the removal of C. cylindracea from extant assemblages enhanced the cover of canopy-forming macroalgae at relatively pristine sites. This did not, however, result in major changes in total cover or species richness of native assemblages. Preventing C. cylindracea reinvasion of cleared plots at pristine sites promoted the recovery of canopy-forming and encrusting macroalgae and hampered that of algal turfs, ultimately resulting in increased species richness. These effects weakened progressively with increasing levels of landbased human impacts and, indeed, shifted in sign at the upper end of the gradient investigated. Thus, at sites exposed to intense disturbance from land-based human activities, the removal of C. cylindracea fostered the cover of algal turfs and decreased that of encrusting algae, with no net effect on species richness. Our results suggests that competition from C. cylindracea is an important determinant of benthic assemblage diversity in pristine environments, but less so in species-poor assemblages found at sites exposed to intense disturbance from land-based human activities, where either adverse physical factors or lack of propagules may constrain the number of potential native colonizers. Implementing measures to reduce the establishment and spread of C. cylindracea in areas little impacted by land-based human activities should be considered a priority for preserving the biodiversity of Mediterranean shallow rocky reefs.

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Tracking the origin of the invading Caulerpa (Caulerpales, Chlorophyta) with Geographic Profiling, a criminological technique for a killer alga

Cited by 34 publications

References 30 publications

Population differentiation of zander (Sander lucioperca) across native and newly colonized ranges suggests increasing admixture in the course of an invasion

Population differentiation of zander (Sander lucioperca) across native and newly colonized ranges suggests increasing admixture in the course of an invasion

Geo-Profiling: beyond the Current Limits. A Preliminary Study of Mathematical Methods to Improve the Monitoring of Invasive Species

Peer Review #2 of "The effects of an invasive seaweed on native communities vary along a gradient of land-based human impacts (v0.1)"

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