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55 results for “coastal conservation”
Data from: Population structure of riverine and coastal dolphins Sotalia fluviatilis and Sotalia guianensis: PATTERNS of nuclear and mitochondrial diversity AND implications for conservation
Coastal and freshwater cetaceans are particularly vulnerable due to their proximity to human activity, localized distributions and small home ranges. These species include Sotalia guianensis, found in the Atlantic and Caribbean coastal areas of central and South America, and Sotalia fluviatilis, distributed in the Amazon River and tributaries. We investigated the population structure and genetic diversity of these two species by analyses of mtDNA control region and 8-10 microsatellite loci. MtDNA analyses revealed strong regional structuring for S. guianensis (i.e. Colombian Caribbean vs. Brazilian Coast, FST= 0.807, ΦST = 0.878, P <0.001) especially north and south of the Amazon River mouth. For S. fluviatilis, population structuring was detected between the western and eastern Amazon (i.e. Colombian Amazon vs. Brazilian Amazon, FST= 0.085, ΦST = 0.277, P <0.001). Haplotype and nucleotide diversity were higher for S. fluviatilis. Population differentiation was supported by analysis of the microsatellite loci (S. guianensis, northern South America vs. southern South America FST= 0.275, Jost´s D = 0.476, P<0.001; S. fluviatilis, western and eastern Amazon FST= 0.197, Jost´s D = 0.364, P<0.001). Most estimated migration rates in both species overlapped with zero, suggesting no measurable migration between most of the sampling locations. However, for S. guianensis, there was measurable migration in neighboring sampling locations. These results indicate that the small home ranges of these species may act to restrict gene flow between populations separated by relatively short distances, increasing the risk of extirpation of some localized populations in the future if existing threats are not minimized.
Data from: Coalescence times, life history traits and conservation concerns: an example from four coastal shark species from the Indo-Pacific
<p><span><span><span><span><span><span><span><span><span><span><span>Dispersal abilities play a crucial role in shaping the extent of population genetic structure, with more mobile species being panmictic over large geographic ranges and less mobile ones organized in meta-populations exchanging migrants to different degrees. In turn, population structure directly influences the coalescence pattern of the sampled lineages, but the consequences on the estimated variation of the effective population size<i> </i>(<i>Ne</i>) over time obtained by means of <i>unstructured</i>demographic models remain poorly understood. However, this knowledge is crucial for biologically interpreting the observed <i>Ne </i>trajectory and further devising conservation strategies in endangered species. Here we investigated the demographic history of four shark species (<i>Carharhinus melanopterus</i>, <i>Carharhinus limbatus</i>, <i>Carharhinus amblyrhynchos</i>, <i>Galeocerdo cuvier</i>) with different degrees of endangered status and life history traits related to dispersal distributed in the Indo-Pacific and sampled off New Caledonia. We compared several evolutionary scenarios representing both <i>structured</i> (meta-population) and<i> unstructured</i> models and then inferred the <i>Ne</i> variation through time. By performing extensive coalescent simulations, we provided a general framework relating the underlying population structure and the observed <i>Ne</i> dynamics. On this basis, we concluded that the recent decline observed in three out of the four considered species when assuming <i>unstructured</i> demographic models can be explained by the presence of population structure. Furthermore, we also demonstrated the limits of the inferences based on the sole site frequency spectrum and warn that statistics based on linkage disequilibrium will be needed to exclude recent demographic events affecting meta-populations.</span></span></span></span></span></span></span></span></span></span></span></p>
Data from: Conservation genetics of Australasian sailfin lizards: flagship species threatened by coastal development and insufficient protected area coverage
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Data from: Identifying conservation priorities for gorgonian forests in Italian coastal waters with multiple methods including citizen science and social media content analysis
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Data from: Coalescence times, life history traits and conservation concerns: an example from four coastal shark species from the Indo-Pacific
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Data from: Conservation priorities for endangered coastal North African Pennisetum glaucum L. landrace populations as inferred from phylogenetic considerations and population structure analysis
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Hotspots within a hotspot: Evolutionary measures unveil interesting biogeogeographic patterns for the conservation of the coastal forest in Chile
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Data from: Marine Phytophthora species can hamper conservation and restoration of vegetated coastal ecosystems
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Data from: Population structure of riverine and coastal dolphins Sotalia fluviatilis and Sotalia guianensis: PATTERNS of nuclear and mitochondrial diversity AND implications for conservation
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Museomics contributes to the spatiotemporal assessment of genetic diversity and structure in wild and ex situ conservation organisms: a case study of three endangered coastal plants in Japan
<p><span>Understanding </span><span>the extent to which </span><span>genetic diversity of wild populations in ex</span> <span>situ</span><span> conservation can be retained is </span><span>crucial</span><span> for the management of </span><span>such</span><span> populations. Wild individuals collected in the target area in the past </span><span>and</span><span> present can be used to estimate the number of alleles lost over time in wild populations and</span><span> thereby</span><span> the number of alleles whose loss could be </span><span>prevented</span><span> by ex</span> <span>situ</span><span> conservation. </span><span>Here</span><span>, we assessed the genetic diversity of wild and ex</span> <span>situ</span><span> conservation populations of three endangered coastal herb species</span><span>,</span><span> <em>Cirsium maritimum</em> Makino (Asteraceae), <em>Linaria japonica</em> Miq. (Plantaginaceae</span><span>) and</span><span> <em>Suaeda glauca</em></span><span><em> </em>(Bunge) Bunge (Amaranthaceae), which are endangered </span><span>species on</span><span> Awaji Island, Hyogo Prefecture, Japan, via multiplexed inter-simple sequence repeat genotyping by sequencing (MIG-seq). We </span><span>incorporated</span><span> the museomics approach, which </span><span>involves conducting</span><span> genetic analyses of museum specimens collected from the targeted wild populations in the past to estimate the temporal transition of genetic diversity in wild populations and the number of alleles maintai</span><span>ned in <em>ex situ</em></span><span> conservation. </span><span>Our </span><span>results </span><span>reveal</span><span> a declining trend in genetic diversity in the wild populations of all </span><span>investigated</span><span> species, although </span><span>this trend is </span><span>not significant. In all the species, </span><span>numerous</span><span> alleles were already lost in current wild populations, </span><span>whereas they</span><span> were </span><span>present</span><span> in the past wild and ex</span> <span>situ</span><span> conservation populations. Our study </span><span>indicates</span><span> that extinct alleles in current wild populations have been maintained in ex</span> <span>situ</span><span> conservation</span><span> by museomics approach. These </span><span>appro</span><span>aches </span><span>were effective in verifying</span><span> the genetic diversity retention effects of <em>ex</em></span><em> <span>situ</span></em><span> conservation populations.</span></p>
FIGURE 3 in A Century after! Rediscovery of the ancient catfish Diplomystes Bleeker 1858 (Siluriformes: Diplomystidae) in coastal river basins of Chile and its implications for conservation
FIGURE 3 | Phylogenetic position of the Coastal populations of Diplomystes recorded in this study in relation to the diversity of the family presented in Muñoz-Ramírez et al. (2014), inferred from the analyzes of two mitochondrial DNA regions (Cytochrome b and Control Region). A. Unrooted Bayesian phylogenetic tree. B. Haplotype network for Diplomystes including samples from the Biobío Basin (from Muñoz-Ramírez et al., 2014) and the individuals sampled in this study. The size of the haplotype represents its frequency, whereas the color represents its geographic distribution. Dashes on lines connecting two haplotypes represent either mutational steps or uncollected haplotypes.
FIGURE 1 in A Century after! Rediscovery of the ancient catfish Diplomystes Bleeker 1858 (Siluriformes: Diplomystidae) in coastal river basins of Chile and its implications for conservation
FIGURE 1 | General area and coastal basins where the new specimens of Diplomystes were recorded. Coastal basin names are shown with a smaller font size in the map on the right. The Carampangue and Laraquete basins, from where the samples were collected, are indicated with their names in bold.
Fig. 5 in Houseflies speaking for the conservation of natural areas: a broad sampling of Muscidae (Diptera) on coastal plains of the Pampa biome, Southern Brazil
Fig. 5. Graphical representation of proportional richness (a) and abundance (b) by the guild in the five regions of Coastal Plain of Pampa Biome (Rio Grande do Sul, Brazil). SS, saprophagous larvae and saprophagic/hematophagous adults; SPS, facultative predators/parasitic larvae and saprophagous adults; OS, predatory larvae and saprophagous adults; PP, predatory larvae and adults.
Supplementary material 1 from: Shaffer JA, Parks D, Campbell K, Moragne A, Hueske B, Adams P, Bauman JM (2023) Coastal beaver, Chinook, coho, chum salmon and trout response to nearshore changes resulting from diking and large-scale dam removals: synergistic ecosystem engineering and restoration in the coastal zone. Nature Conservation 53: 61-83. https://doi.org/10.3897/natureconservation.53.85421
Mean woody plant abundance surveyed from the riparian and shrub-emergent marsh vegetation
Museomics contributes to the spatiotemporal assessment of genetic diversity and structure in wild and ex situ conservation organisms: a case study of three endangered coastal plants in Japan
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.