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FIG. 5. Correlation between the spatial distribution index and population density. A in Demographic and spatial structure at the stage of expansion in the populations of some alien land snails in Belgorod city (Central Russian Upland)

FIG. 5. Correlation between the spatial distribution index and population density. A. For Brephulopsis cylindrica and Xeropicta derbentina at 160 plots for three years. B. For Harmozica ravergiensis in nine sites×20 plots for two years. РИС. 5. Корреляция меЖду индексом пространственного распределения и плотностью популяции. А. Для Brephulopsis cylindrica и Xeropicta derbentina на 160 плоЩадках За три года. В. Для Harmozica ravergiensis на девяти участках по 20 плоЩадок За два года.

FIG. 4 in Demographic and spatial structure at the stage of expansion in the populations of some alien land snails in Belgorod city (Central Russian Upland)

FIG. 4. Boxplots for estimating the density of different age classes in the Xeropicta derbentina population in warm months of 2017, 2019, and 2020 for 160 test plots. Adult snails are represented by red boxes; juvenile snails are represented by blue boxes. РИС. 4. Боксплоты для оценок плотности раЗличных воЗрастных классов в популяции Xeropicta derbentina в раЗные теплые месяцы 2017, 2019 и 2020 гг. для 160 пробных плоЩадок. ВЗрослые особи покаЗаны красным цветом, ювенильные особи покаЗаны голубым цветом.

FIG. 3 in Demographic and spatial structure at the stage of expansion in the populations of some alien land snails in Belgorod city (Central Russian Upland)

FIG. 3. Boxplots for estimating the density of different age classes in the Brephulopsis cylindrica population in warm months of 2017, 2019, and 2020 for 160 test plots. Adult snails are represented by red boxes; juvenile snails are represented by blue boxes. РИС. 3. Боксплоты для оценок плотности раЗличных воЗрастных классов в популяции Brephulopsis cylindrica в раЗные теплые месяцы 2017, 2019 и 2020 гг. для 160 пробных плоЩадок. ВЗрослые особи покаЗаны красным цветом, ювенильные особи покаЗаны голубым цветом.

FIG. 2 in Demographic and spatial structure at the stage of expansion in the populations of some alien land snails in Belgorod city (Central Russian Upland)

FIG. 2. Scheme of plots in a regular grid. A. Study site. B. Brephulopsis cylindrica and Xeropicta derbentina in the field. C. Scheme of plots in a regular grid. РИС. 2. Регулярная сетка плоЩадок. A. РасполоЖение исследуемого участка. B. Brephulopsis cylindrica и Xeropicta derbentina в месте обитания. C. Схема регулярной сетки плоЩадок.

opencc-zeroJun 2022View details →

Data for the manuscript: Demographic basis of spatially structured fluctuations in a threespine stickleback metapopulation

Uncovering the demographic basis of population fluctuations is a central goal of population biology. This is particularly challenging for spatially structured populations, which require disentangling synchrony in demographic rates from coupling via immigration. In this study, we fit a stage-structured metapopulation model to a 29-year times series of threespine stickleback abundance in the heterogeneous and productive Lake Myvatn, Iceland. The lake comprises two basins (North and South) connected by a channel through which the stickleback disperse. The model includes time-varying demographic rates, allowing us to assess the potential contributions of recruitment and survival, spatial coupling via immigration, and demographic transience to the population's large fluctuations in abundance. Our analyses indicate that recruitment was only modestly synchronized between the two basins, whereas survival probabilities of adults were more strongly synchronized, contributing to cyclic fluctuations in the lake-wide population size with a period of approximately six years. The analyses further show that the two basins are coupled through immigration, with the North Basin subsidizing the South Basin and playing a dominant role in driving the lake-wide dynamics. Our results show that cyclic fluctuations of a metapopulation can be explained in terms of the combined effects of synchronized demographic rates and spatial coupling.

Figure 2 in Effects of dams on demographic structures of amphidromous fish and crustacean species in Caribbean rivers

Figure 2. – Individual number histograms of each species broken down by size classes (mm) (left chart) and cohort extraction (right chart) downstream of the Grand Carbet River in March. Right chart: red curves are each cohort extracted by the model; green curve is the cumulative individual number in the modelled age groups.

Figure 1 in Effects of dams on demographic structures of amphidromous fish and crustacean species in Caribbean rivers

Figure 1. – Map of Guadeloupe with the three sampled rivers (bold lines) and study sites: downstream and upstream the water intakes (●) and the first riffle from the mouth of the rivers (Ì).

Figure 7 in Effects of dams on demographic structures of amphidromous fish and crustacean species in Caribbean rivers

Figure 7. – Individual number histograms of each species broken down by size classes (mm) for the three stations (top chart) and porosity chart of the Moreau River water intake (bottom chart). Bottom chart: dotted black line indicates 50% crossing; dotted grey lines indicate the mean crossing rate for these size classes. The size of the downstream and upstream populations of Macrobrachium faustinum and M. heterochirus are too small and fragmented to be presented.

Figure 4 in Effects of dams on demographic structures of amphidromous fish and crustacean species in Caribbean rivers

Figure 4. – Individual number histograms of each species broken down by size classes (mm) (left chart) and cohort extraction (right chart) downstream of the Moreau River in June. Right chart: red curves are each cohort extracted by the model; green curve is the cumulative individuals' number in the modelled age groups. No Macrobrachium heterochirus were caught.

Figure 6 in Effects of dams on demographic structures of amphidromous fish and crustacean species in Caribbean rivers

Figure 6. – Individual number histograms of each species broken down by size classes (mm) for the three stations (top chart) and porosity chart of the Pérou River water intake (bottom chart). Bottom chart: arrow indicates the optimal size at crossing; dotted black line indicates 50% crossing; dotted grey lines indicate the mean crossing rate for these size classes. The size of the downstream and upstream population of Macrobrachium faustinum is too small and fragmented to be presented.

opencc-by-4.0Dec 2016View details →

Figure 2. Bayesian posterior probability 50 in Population genetic structure and demographic history of the Chinese endemic Mongoloniscus sinensis (Dollfus, 1901) (Isopoda: Oniscidea)

Figure 2. Bayesian posterior probability 50% majority-rule consensus tree of the M. sinensis haplotypes. Out-group was Ligia occidentalis; the map showed mitochondrial haplotype clades of Porcellio gigliotose and Trachelipus semiproiectus. The numbers above joints are the bootstrap support values of MP value, ML value, and the posterior probabilities of the BI tree, respectively (MP/ML/BI).

opencc-by-4.0Dec 2016View details →

Figure 1 in Population genetic structure and demographic history of the Chinese endemic Mongoloniscus sinensis (Dollfus, 1901) (Isopoda: Oniscidea)

Figure 1. Locations of sampled populations and geographical distribution of Mongoloniscus sinensis mtDNA clades. Mountain ranges are in green letters as follows: H—Heng Mountain, TH—Taihang Mountain, WT—Wutai Mountain, LL—Lvliang Mountain, TY–Taiyue Mountain, ZT—Zhongtiao Mountain.

opencc-by-4.0Dec 2016View details →

Figure 3 in Population genetic structure and demographic history of the Chinese endemic Mongoloniscus sinensis (Dollfus, 1901) (Isopoda: Oniscidea)

Figure 3. Parsimonious network of M. sinensis haplotypes. Each circle represents a haplotype, with the area of the circle proportional to its frequency. The evolutionary clades C1 - C6 are shown in different colors, and median vector (mvl-mv3) is indicated in red.

opencc-by-4.0Dec 2021View details →

Figure 4 in Genetic diversity, population structure and demographic history of Dugesia japonica in Taihang Mountains

Figure 4. Median-joining haplotype network based on mitochondrial gene COI. The four ellipses represent four clades in Figure 3, respectively. Each circle represents a haplotype, the area of the circle is proportional to the frequency of haplotypes, and black dots represent hypothetical unobserved haplotypes. Different populations are shown in different colors.

opencc-by-4.0Dec 2021View details →

Figure 3 in Genetic diversity, population structure and demographic history of Dugesia japonica in Taihang Mountains

Figure 3. Maximum likelihood (ML) and Bayesian inference (BI) phylogentic trees based on mitochondrial gene COI. Dugesia ryukyuensis (Genbank accession no. AB618488) serves as the outgroup. The broken lines denote inconsistent branches. Bootstrap percentages (BP,>50 only) of ML analysis and posterior probabilities (PP,>0.50 only) of Bayesian inference are shown above and below the branch, respectively. HG—haplogroup.

publicJun 2022View details →

Data for the manuscript: Demographic basis of spatially structured fluctuations in a threespine stickleback metapopulation

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publicJan 2025View details →

Continent-wide drivers of spatial synchrony in breeding demographic structure across wild great tit populations

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