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opencc-by-4.0Jun 2013View details →

Supplementary material 1 from: Hejda M (2013) Do species differ in their ability to coexist with the dominant alien Lupinus polyphyllus? A comparison between two distinct invaded ranges and a native range. NeoBiota 17: 39-55. https://doi.org/10.3897/neobiota.17.4317

Entry data for the univariate models with species richness as a response variable. (doi: 10.3897/neobiota.17.4317.app1) File format: Micrisoft Excell document (xls). :

Fig. 2 in Comparative phenology and cohort survival of beech scale (Hemiptera: Eriococcidae) in part of its native range (Caucasus Mountains, Georgia) and in an invaded area (Massachusetts, USA)

Fig. 2. Cloth wrapping used to cage beech trunk section in 2012 at Gulelebi Forest in Georgia where one part of the scale cohort survival study was conducted.

Fig. 6 in Comparative phenology and cohort survival of beech scale (Hemiptera: Eriococcidae) in part of its native range (Caucasus Mountains, Georgia) and in an invaded area (Massachusetts, USA)

Fig. 6. Comparative cumulative day-degrees for Tianeti in the country of Georgia (cum DD GEO) and Windsor, Massachusetts, USA (cum DD MA), each in the years in which phenological observations on beech scale were made at the 2 locations.

Fig. 5 in Comparative phenology and cohort survival of beech scale (Hemiptera: Eriococcidae) in part of its native range (Caucasus Mountains, Georgia) and in an invaded area (Massachusetts, USA)

Fig. 5. Phenology of life stages of beech scale in Massachusetts (USA) (Notchview Reservation, property of Trustees of Reservations, Windsor, 2013), showing univoltine cycle, with settled crawlers being the overwintering stage.

Fig. 4 in Comparative phenology and cohort survival of beech scale (Hemiptera: Eriococcidae) in part of its native range (Caucasus Mountains, Georgia) and in an invaded area (Massachusetts, USA)

Fig. 4. Phenology of life stages of beech scale in Georgia (Gulelebi Forest, Tianeti District, 2011), showing bivoltine cycle, with adult females being the overwintering stage.

Fig. 3 in Comparative phenology and cohort survival of beech scale (Hemiptera: Eriococcidae) in part of its native range (Caucasus Mountains, Georgia) and in an invaded area (Massachusetts, USA)

Fig. 3. (a) Example of trunk cages made from small Petri dishes (with an open bottom) that were used to isolate scale patches in Massachusetts. (b) Patches of beech scale initiated by delimiting groups (<50) of newly settled crawlers with top patch (defined by black circle marked on bark) lef uncaged, whereas lower patch was caged (caged removed here) from Oct 2011 to Oct 2012 (1 scale generation) at which time scales were a mixture of adults and crawlers of the next generation; done on American beech at Notchview Reservation (property of Trustees of Reservations), Windsor, Massachusetts, USA. Note the greater number of large white woolly dots (adults of the test generation) in the bottom circle, suggesting significant mortality due to factors, like generalist predators, that were excluded by the cages.

Fig. 1 in Comparative phenology and cohort survival of beech scale (Hemiptera: Eriococcidae) in part of its native range (Caucasus Mountains, Georgia) and in an invaded area (Massachusetts, USA)

Fig. 1. Sites in Georgia where studies were conducted. Site 1 (Gulelebi Forest) was used in 2011 for the phenology observations, and sites 2 (Gombori) and 3 (Lagodekhi) were used for the cohort survival experiment in 2012.

Fig. 1 in Helpful invaders: Can cane toads reduce the parasite burdens of native frogs?

Fig. 1. Effect of order of exposure and type of anuran species (native frog versus cane toad) on the number of lungworm (Rhabdias hylae) larvae taken up in one hour in experimental arenas. Graph displays average values ±1 S.E.

Fig. 2 in Helpful invaders: Can cane toads reduce the parasite burdens of native frogs?

Fig. 2. Effect of prior exposure to Rhabdias hylae on the subsequent establishment of another lungworm species (Rhabdias pseudosphaerocephala) in the lungs of cane toad metamorphs. Graph displays average values ±1 S.E.

opencc-by-4.0Aug 2014View details →

Fig. 1 in Co-invaders: The effects of alien parasites on native hosts

Fig. 1. Schematic diagram of processes involved in species invasions and coinvasions. (a) Free-living aliens. The light blue oval shape represents a new area, outside the natural range of the alien species, shown in red. Arrows indicate movement of alien species through the phases of introduction, establishment and invasion of the habitat of the native species, shown in blue. Vertical bars represent barriers to be overcome in each phase. (b) Parasitic aliens. The alien host species (in red) contains an alien parasite species. The alien parasite goes through the processes of introduction, establishment and spread with its original host and then switches to a native host species (in blue) to become a co-invader. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)

opencc-by-4.0Aug 2014View details →

Fig. 2 in Co-invaders: The effects of alien parasites on native hosts

Fig. 2. (a) Relative proportions of taxa represented in 98 examples of co-introduced parasites: prokaryotes (viruses and bacteria); protozoans; helminths (platyhelminths, nematodes and acanthocephalans); arthropods (crustaceans, arachnids); and a miscellaneous group including fungi, myxozoans, annelids, molluscs and pentasomids. (b) Relative proportions of alien hosts represented in 98 examples of cointroductions: molluscs; arthropods; fishes; mammals; and other vertebrates (amphibians, reptiles and birds). (c) Number of co-introduced parasite species with direct and indirect life cycles which have switched (black bars) or not switched (white bars) from alien to native host species.

opencc-by-4.0Sep 2023View details →

Figure 2 in Spatial segregation between the native Tropical mockingbird and the invader Chalk-browed mockingbird (Passeriformes: Mimidae) along a Neotropical natural-urban gradient

Figure 2. Abundance (Punctual Abundance Index) of Tropical mockingbird (Mimus gilvus, closed circle and continuous line) and Chalk-browed mockingbird (M. saturninus, open circle and dashed line) regarding urbanization index (Normalized Difference Built-up Index) in a coastal region of southeastern Brazil. Urbanization increases toward a higher urbanization index.

opencc-by-4.0Sep 2023View details →

Figure 1 in Spatial segregation between the native Tropical mockingbird and the invader Chalk-browed mockingbird (Passeriformes: Mimidae) along a Neotropical natural-urban gradient

Figure 1. Sampling design (transects) in the municipalities of Vila Velha and Guarapari, state of Espírito Santo, southeastern Brazil.

opencc-zeroJan 2024View details →

Linked collectors and determiners for: DNA analysis of a non-native lineage of Sinanodonta woodiana species complex (Bivalvia: Unionidae) from Middle Asia supports the Chinese origin of the European invaders.

Natural history specimen data linked to collectors and determiners held within, "DNA analysis of a non-native lineage of Sinanodonta woodiana species complex (Bivalvia: Unionidae) from Middle Asia supports the Chinese origin of the European invaders". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/86a42a54-2f47-458e-a443-13866e9e3191">https://bionomia.net/dataset/86a42a54-2f47-458e-a443-13866e9e3191</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/86a42a54-2f47-458e-a443-13866e9e3191">https://gbif.org/dataset/86a42a54-2f47-458e-a443-13866e9e3191</a>. Formatted as a Frictionless Data package.

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Data from: Geographic variation in leaf traits and palatability of a native plant invader during domestic expansion

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publicAug 2024View details →

opencc-zeroJun 2019View details →

Data from: Direct effects of a non-native invader erode native plant fitness in the forest understory

1. The direct role of non-native plant invaders in driving negative population- and community-level processes of native species has been recently questioned. Addressing this controversy requires determining quantitatively if invaders negatively affect native population fitness. Because the invasion of non-natives often coincides with other anthropogenic stressors, experiments that partition the putative impact of non-natives from other known stressors and assess their potential synergies are required. While many studies have examined the effects of non-natives on components of native plant performance, studies that decompose the net fitness effects of non-natives from other anthropogenic stressors on population growth rate are lacking. 2. We used six years of detailed demographic data to parameterize a size-dependent integral projection model to examine the individual and combined effects of an allelochemical-producing invader (Alliaria petiolata) and an overabundant ungulate herbivore (Odocoileus virginianus) on the population dynamics of an understory perennial (Trillium erectum). 3. We show that Alliaria consistently and negatively affects the population dynamics of Trillium. Specifically, this invader reduces native population growth rate and alters the size distribution of the population at equilibrium. Alliaria also works in concert with the known negative impacts of overabundant white-tailed deer, illustrating the additive effects of anthropogenic stressors on native plant dynamics. 4. Synthesis. Alliaria's effects on vital rates differed in magnitude and sign across the native's lifecycle, highlighting the importance of detailed demographic analyses. Globally, our study provides novel empirical support for the claim that non-native invasive species can significantly and directly reduce the fitness of native plants.

opencc-zeroApr 2020View details →

Data from: Little giants: a rapidly invading seagrass alters ecosystem functioning relative to native foundation species

The spread of invasive species is a major component of global ecological change and how and when to manage particular species is a diicult empirical question. Ideally, these decisions should be based on the speciic impacts of invading species including both their efects on native competitors and how they may or may not play similar roles in broader ecosystem functioning. Halophila stipulacea is an invasive seagrass currently spreading through the Caribbean, and as seagrasses are foundation species, the efects of invasion have the potential to be particularly far-reaching. To evaluate the impacts of H. stipulacea we quantiied spread and potential for displacement of native seagrasses as well as the efects of invasion on multiple ecosystem processes, particularly resource support for higher trophic levels and habitat creation. Long-term monitoring suggested that H. stipulacea likely displaces some native seagrasses (Syringodium filiforme and Halodule wrightii), but not others. Halophila stipulacea had lower N and protein levels and higher C:N ratios than native seagrasses, and as such is a poorer quality resource for consumers. We also observed signiicantly lower consumption of H. stipulacea than the native S. filiforme but limited diferences compared to Thalassia testudinum. We found H. stipulacea created a more nutrient limited environment than T. testudinum and there were signiicantly distinct invertebrate assemblages in native- and invasive- dominated seagrass beds, but no diference in species richness or invertebrate biomass. These results suggest that the spread of H. stipulacea would impact a variety of ecological processes, potentially restructuring seagrass ecosystems through both direct impacts on environmental conditions (e.g., nutrient availability) and indirect food web interactions.

opencc-zeroNov 2023View details →

Diversity, species coexistence, and functional composition patterns in subtropical Atlantic Forests invaded by non-native trees

<ol> <li>Biological invasions are a major environmental challenge today. Interactions between invasive and native species can significantly shape community structures, influencing co-existence, diversity, and functional composition of species. The subtropical Atlantic forest in southern Brazil, a recognized biodiversity hotspot, provides a unique setting to study these interactions, given its vulnerability to alien tree invasions. </li> <li>Our study sought to elucidate the impacts of such invasions on this fragile ecosystem by addressing key questions: 1) How are tree community diversity patterns affected by the abundance of invading alien tree species? 2) What are the patterns of coexistence between native and alien invasive trees? 3) Is the functional composition of the forests altered by the abundance of invasive trees?</li> <li>To address these questions, we compiled data on the abundance and functional traits of native and invasive trees. We determined the diversity patterns and functional composition of plots with different degrees of invasion. These data were analyzed using Generalized Linear Mixed Models, Principal Component Analysis, and a coexistence index.</li> <li>In plots with a higher abundance of invasive trees, there was a significant decrease in the taxonomic and functional richness of native species. Furthermore, we observed that invasive alien trees coexisted with native species, and as the abundance of invasive trees increased, the native community weighted mean (CWM) of the leaf area and specific leaf area decreased.</li> <li>In conclusion, within the subtropical Atlantic forest areas of southern Brazil, our findings highlight that the abundance of invasive trees adversely affects the taxonomic and functional richness of native species. Furthermore, while invasive alien trees were found to coexist with native species, increased invasive abundance corresponded to a reduction in the leaf area and the specific leaf area of the native community.</li> </ol>

opencc-zeroFeb 2024View details →

16S rRNA sequences from Siganidae (S. rivulatus and S. luridus) gut microbiome in their native (Red Sea) and invaded (Mediterranean Sea) ranges

The microbiome of invasive species is increasingly seen as a potential key factor of their ecological success, and this appears particularly true in herbivorous invaders whose digestive abilities rely on the microbes hosted in their gut. We characterized the gut microbiome of two invasive herbivorous fishes (Siganus rivulatus and Siganus luridus) in their native (Red Sea) and invaded (Levantine Sea and Northern Crete) ranges. We found that gut bacterial communities contain a higher taxonomic and phylogenetic diversity while becoming increasingly different from the native microbiome as the fishes move away from the native zone. This shift resulted in the homogenization of the microbiomes between individuals from the same species as well as between the two species. Firmicutes and Tenericutes reduced drastically in abundance while Proteobacteria and Bacteroidetes became more dominant in both species. This led to a modification of the functional potential of the gut microbiome associated with the metabolism of short-chanin fatty acids that also became more homogeneous in the invaded range. Altogether, our results suggest that the plasticity of the gut microbiome in Siganidae could be a key factor underlying their ecological success in Mediterranean ecosystems.