Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
9
datasets available to search
ShareScore release 0.9.0
Dataset results
9 results for “Census population size”
Data from: Is genomic diversity a useful proxy for census population size? Evidence from a species-rich community of desert lizards
Open the record for dataset details and reuse information.
Data from: Spatiotemporal relationship between adult census size and genetic population size across a wide population size gradient
Adult census population size (N) and effective number of breeders (Nb) are highly relevant for designing effective conservation strategies. Both parameters are often challenging to quantify, however, making it of interest to determine whether one parameter can be generalized from the other. Yet, the spatiotemporal relationship between N and Nb has not been well characterized empirically in many taxa. We analysed this relationship for 5–7 consecutive years in twelve brook trout populations varying greatly in N (49-10032) and Nb (3-567) and identified major environmental variables affecting the two parameters. N or habitat size alone explained 47–57% of the variance in Nb, and Nb was strongly correlated with effective population size. The ratio Nb/N ranged from 0.01 to 0.45 and increased at small N or following an annual decrease in N, suggesting density-dependent constraints on Nb. We found no evidence for a consistent, directional difference between variability in Nb and/or Nb/N among small and large populations; however, small populations had more varying temporal variability in Nb/N ratios than large populations. Finally, Nb and Nb/N were 2.5- and 2.3-fold more variable among populations than temporally within populations. Our results demonstrate a clear linkage between demographic and evolutionary parameters, suggesting that Nb could be used to approximate N (or vice versa) in natural populations. Nevertheless, using one variable to infer the other to monitor trends within populations is less recommended, perhaps even less so in small populations given their less predictable Nb vs. N dynamics.
Comparison of adult census size and effective population size support the need for continued protection of two Solomon Island endemics
<p>Because a population's ability to respond to rapid change is dictated by standing genetic variation, we can better predict a population's long-term viability by estimating and then comparing adult census size (<em>N</em>) and effective population size (<em>N<sub>e</sub></em>). However, most studies only measure <em>N</em> or <em>N<sub>e</sub></em>, which can be misleading. Using a combination of field and genomic sequence data, we here estimate and compare <em>N</em> and <em>N<sub>e</sub></em> in two range-restricted endemics of the Solomon Islands. Two <em>Zosterops</em> White-eye species inhabit the small island of Kolombangara, with a high elevation species endemic to the island (<em>Z. murphyi</em>) and a low elevation species endemic to the Solomon Islands (<em>Z. kulambangrae</em>). Field observations reveal large values of <em>N </em>for both species with <em>Z. kulambangrae</em> numbering at 114,781 ± 32,233 adults, and <em>Z. murphyi</em> numbering at 64,412 ± 15,324 adults. In contrast, genomic analyses reveal that <em>N<sub>e</sub></em> was much lower than <em>N</em>, with <em>Z. kulambangrae</em> estimated at 694.5 and <em>Z. murphyi</em> at 796.1 individuals. Further, positive Tajima's D values for both species suggest that they have experienced a demographic contraction, providing a mechanism for low values of <em>N<sub>e</sub></em>. Comparison of <em>N </em>and <em>N<sub>e</sub></em> suggests that <em>Z. kulambangrae</em> and <em>Z. murphyi</em> are not at immediate threat of extinction but may be at genetic risk. Our results provide important baseline data for long-term monitoring of these island endemics, and argue for measuring both population size estimates to better gauge long-term population viability.</p>
Data from: Assessing conservation risks to populations of an anadromous Arctic salmonid, the northern Dolly Varden (Salvelinus malma malma), via estimates of effective and census population sizes and approximate Bayesian computation
Open the record for dataset details and reuse information.
Data from: Spatiotemporal relationship between adult census size and genetic population size across a wide population size gradient
Open the record for dataset details and reuse information.
Comparison of adult census size and effective population size support the need for continued protection of two Solomon Island endemics
Open the record for dataset details and reuse information.
Data from: Effective number of breeders, effective population size and their relationship with census size in an iteroparous species, Salvelinus fontinalis
Effective number of breeders, Nb, effective population size, Ne, iteroparity, small population size, brook trout, age at maturation Abstract: The relationship between the effective number of breeders (Nb) and the generational effective size (Ne) has rarely been examined empirically in species with overlapping generations and iteroparity. Based on a suite of 11 microsatellite markers we examine the relationship between Nb, Ne, and census population size (Nc) in 14 brook trout (Salvelinus fontanels) populations inhabiting 12 small streams in Nova Scotia and sampled at least twice between 2009 and 2015. Unbiased estimates of Nb obtained with individuals of a single cohort, adjusted on the basis of age at first maturation (α) and adult life span (AL) were from 1.66 to 0.24 times the average estimates of Ne obtained with random samples of individuals of mixed ages [i.e., N ̂(b(adj2))/〖mean(N ̂ (e(mixed ages)))]. In turn, these differences led to adjusted Ne estimates that were from nearly 5 to 0.7 times the estimates derived from mixed aged individuals. These differences translate into the same range of variation in the ratio of effective to census population size (N ̂_(e(adj2))N ̂_c) within populations. Adopting N ̂(e(adj2)) as the more precise and unbiased estimates, we found that these brook trout populations differ markedly in their effective to census population sizes (range ~0.3 to ~0.001). Using AgeNe we then show that the variance in reproductive success or reproductive skew varied among populations by a factor of 40 from a Vk/k≈5 to 200. These results suggest wide differences in population dynamics likely resulting from differences in productivity affecting the intensity of competition for access to mates or redds and thus, reproductive skew. Understanding the relationship between Ne, Nb and Nc and how these relate to population dynamics and fluctuations in population size are important for the design of robust conservation strategies in small populations with overlapping generations and iteroparity.
Data from: A critical assessment of estimating census population size from genetic population size (or vice versa) in three fishes
Open the record for dataset details and reuse information.
Data from: Effective number of breeders, effective population size and their relationship with census size in an iteroparous species, Salvelinus fontinalis
Open the record for dataset details and reuse information.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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.