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104 results for “population establishment”
Figure 8 in The introduction of Physa acuta (Gastropoda: Physidae) on Ilha Grande, Southeast Brazil, from initial stages to an established population
Figure 8. Variation of environmental variables on the impacted stream of Vila do Abrãao. For rainfall was used the data from the city of Rio de Janeiro. A – water temperature, B – pH, C – conductivity, D – water deep, and E – rainfall.
Figure 7 in The introduction of Physa acuta (Gastropoda: Physidae) on Ilha Grande, Southeast Brazil, from initial stages to an established population
Figure 7. Population variation of Physa acuta, divided in size class, through the time in Ilha Grande. Feb = February, Apr = April, Jun = June, Sep = September, Nov = November.
Figure 3 in The introduction of Physa acuta (Gastropoda: Physidae) on Ilha Grande, Southeast Brazil, from initial stages to an established population
Figure 3. Variation of the abundance of Physa acuta in the eight collecting stations (CS) that was established on an impacted stream of Ilha Grande, along the monitoring time.
Figure 6 in The introduction of Physa acuta (Gastropoda: Physidae) on Ilha Grande, Southeast Brazil, from initial stages to an established population
Figure 6. The overall size class of Physa acuta representation found on the population of Ilha Grande.
Figure 1 in The introduction of Physa acuta (Gastropoda: Physidae) on Ilha Grande, Southeast Brazil, from initial stages to an established population
Figure 1. Map of the Vila do Abraão (Ilha Grande, Angra dos Reis, Rio de Janeiro), highlighting the studied stream (blue line) and the eight collecting stations (CS; red dots).
Figure 2 in Indotyphlops braminus (Daudin, 1803): distribution and oldest record of collection dates in Oceania, with report of a newly established population in French Polynesia (Tahiti Island, Society Archipelago)
Figure 2. Anterior ventral area of Indotyphlops braminus MNHN-RA 2015.0057 showing the whitish gular coloration. Picture: I. Ineich.
Figure 1 in Indotyphlops braminus (Daudin, 1803): distribution and oldest record of collection dates in Oceania, with report of a newly established population in French Polynesia (Tahiti Island, Society Archipelago)
Figure 1. Two introduced specimens of Indotyphlops braminus from Tahiti Island in French Polynesia. MNHN-RA 2015.0058 above and MNHN-RA 2015.0057 below. Scale bar: 1cm. Picture: I. Ineich.
Figure 5 in First report on mild insecticide resistance in newly established Aegean Aedes albopictus populations of Turkey
Figure 5. Mortality rates against fenitrothion in Aedes albopictus populations of the Aegean region (Mean ± S.E. Same lower case letters above error bars indicates nonsignificant difference at p> 0.05 based on the ANOVA results followed by Tukey's HSD test).
Figure 6 in First report on mild insecticide resistance in newly established Aegean Aedes albopictus populations of Turkey
Figure 6. Mortality rates against permethrin in Aedes albopictus populations of the Aegean region (Mean ± S.E. Same lower case letters above error bars indicates nonsignificant difference at p> 0.05 based on the ANOVA results followed by Tukey's HSD test).
Figure 4 in First report on mild insecticide resistance in newly established Aegean Aedes albopictus populations of Turkey
Figure 4. Mortality rates against bendiocarb in Aedes albopictus populations of the Aegean region (Mean ± S.E. Same lower case letters above error bars indicates nonsignificant difference at p> 0.05 based on the ANOVA results followed by Tukey's HSD test).
Figure 3 in First report on mild insecticide resistance in newly established Aegean Aedes albopictus populations of Turkey
Figure 3. Mortality rates against propoxur in Aedes albopictus populations of the Aegean region (Mean ± S.E. Same lower case letters above error bars indicates nonsignificant difference at p> 0.05 based on the ANOVA results followed by Tukey's HSD test).
Figure 2 in First report on mild insecticide resistance in newly established Aegean Aedes albopictus populations of Turkey
Figure 2. Mortality rates against DDT in Aedes albopictus populations of the Aegean region (Mean ± S.E. Same lower case letters above error bars indicates nonsignificant difference at p> 0.05 based on the ANOVA results followed by Tukey's HSD test).
Table 1 in Indotyphlops braminus (Daudin, 1803): distribution and oldest record of collection dates in Oceania, with report of a newly established population in French Polynesia (Tahiti Island, Society Archipelago)
<p><b>Table 1</b>. Earliest known arrival dates of the snake <i>Indotyphlops braminus</i> on the Oceanian islands and archipelagos according to publications or collection vouchers.</p><table><thead><tr><th><b>Country</b></th><th><b>Earliest date</b></th><th><b>Reference</b></th></tr></thead><tbody><tr><th>Mariana Islands</th><td>1819</td><td>A.M.C. Duméril & Bibron 1844</td></tr><tr><th>Mariana Islands, Guam</th><td>1819</td><td>A.M.C. Duméril & Bibron 1844</td></tr><tr><th>New Guinea</th><td>1912</td><td>Barbour 1912</td></tr><tr><th>Hawai'i</th><td>1930</td><td>Slevin 1930</td></tr><tr><th>Carolines (Pohnpei)</th><td>1936</td><td>Buden 2000</td></tr><tr><th>Mariana Islands, Tinian</th><td>1945</td><td>Cagle 1946</td></tr><tr><th>Mariana Islands, Saipan</th><td>1945</td><td>Cagle 1946</td></tr><tr><th>Marshall Islands</th><td>1954</td><td>Knight 1984</td></tr><tr><th>Palau (Belau)</th><td>1955</td><td>Crombie & Pregill 1999</td></tr><tr><th>Solomon Isl.</th><td>1961</td><td>McDowell 1974</td></tr><tr><th>Vanuatu</th><td>1971</td><td>Medway & Marshall 1975</td></tr><tr><th>Bonin Island</th><td>1971</td><td>Shigei 1971</td></tr><tr><th>New Caledonia</th><td>1974</td><td>Ineich & Bauer 1992</td></tr><tr><th>Fiji</th><td>1983</td><td>Clunie 1983</td></tr><tr><th>Mariana Islands, Rota</th><td>1987</td><td>Wiles et al. 1990</td></tr><tr><th>Loyalty Islands</th><td>1991</td><td>Shea & Wallach 2000</td></tr><tr><th>American Samoa</th><td>1992</td><td>CAS 195919</td></tr><tr><th>Midway Atoll</th><td>1998</td><td>Wallach 2008</td></tr><tr><th>Nauru</th><td>2007</td><td>Buden 2008</td></tr><tr><th>Kiribati (Gilbert Isl.)</th><td>2007</td><td>Craven & Shea 2010</td></tr><tr><th>Western Samoa</th><td>2009</td><td>Bonin & Shea 2009</td></tr><tr><th>Tahiti Island, French Polynesia</th><td>2014</td><td>This paper</td></tr></tbody></table>
Data from: Post‐glacial establishment of locally adapted fish populations over a steep salinity gradient
<p>Studies of colonization of new habitats that appear from rapidly changing environments are interesting and highly relevant to our understanding of divergence and speciation. Here, we analyse phenotypic and genetic variation involved in the successful establishment of a marine fish (sand goby, Pomatoschistus minutus) over a steep salinity drop from 35 PSU in the North Sea (NE Atlantic) to two PSU in the inner parts of the post-glacial Baltic Sea. We first show that populations are adapted to local salinity in a key reproductive trait, the proportion of motile sperm. Thereafter, we show that genome variation at 22,190 single nucleotide polymorphisms (SNPs) shows strong differentiation among populations along the gradient. Sequences containing outlier SNPs and transcriptome sequences, mapped to a draft genome, reveal associations with genes with relevant functions for adaptation in this environment but without overall evidence of functional enrichment. The many contigs involved suggest polygenic differentiation. We trace the origin of this differentiation using demographic modelling and find the most likely scenario is that at least part of the genetic differentiation is older than the Baltic Sea and is a result of isolation of two lineages prior to the current contact over the North Sea–Baltic Sea transition zone.</p>
Data from: Plant community response to switchgrass (Panicum virgatum) population source in establishing prairies
Ecological restoration and revegetation efforts entail the translocation of native plant populations. Risks associated with these efforts include failure of translocated populations to establish or, conversely, such strong establishment that they excessively dominate the recipient community. The role that selective breeding plays in mediating these risks is unclear but of increasing importance as efforts to restore and establish multifunctional grasslands also increase. In a three-year, spatially replicated study, we seeded experimental prairie communities with either domesticated (cultivar) or undomesticated strains of Panicum virgatum (switchgrass), a North American C4 species under development as a biomass crop. We evaluated the composition, performance, and diversity of the recipient plant communities and compared the performance of cultivar and undomesticated switchgrass in those communities. We found little evidence that switchgrass population source affected community response. Switchgrass cultivars modestly exceeded undomesticated strains with respect to stand establishment, third-year stand density, and aboveground biomass; effect size and significance differed among sites. Our results suggest that including cultivars in ecological restorations and multifunctional grasslands may enhance success of switchgrass establishment with little risk of impairing the composition or diversity of plant communities for up to three years, as reflected in the measures used here. However, the incorporation of undomesticated switchgrass into multifunctional grasslands may enhance landscape-scale genetic variation and mitigate risks associated with gene flow between translocated and local wild switchgrass populations; more research on these dynamics is needed.
Figure 4 in The introduction of Physa acuta (Gastropoda: Physidae) on Ilha Grande, Southeast Brazil, from initial stages to an established population
Figure 4. The overall abundance of Physa acuta on the eight collecting stations (CS).
Figure 5 in The introduction of Physa acuta (Gastropoda: Physidae) on Ilha Grande, Southeast Brazil, from initial stages to an established population
Figure 5. Relationship of shell height and width of Physa acuta from Ilha Grande.
Figure 2 in The introduction of Physa acuta (Gastropoda: Physidae) on Ilha Grande, Southeast Brazil, from initial stages to an established population
Figure 2. Variation of the total abundance of Physa acuta in an impacted stream of Ilha Grande.
Data from: An established plant invader may still benefit from increasing genetic diversity – Insights from artificial populations in a common garden experiment
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Data from: Genetic monitoring of brown trout released into a novel environment: Establishment and genetic impact on natural populations
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