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27 results for “interannual variation”
Fig. 4 in Effects of the interannual variations in the flood pulse mediated by hypoxia tolerance: the case of the fish assemblages in the upper Paraná River floodplain
Fig. 4. Ordination of the samples of the upper Paraná River floodplain, through the detrended correspondence analysis (DCA), in years of short (diamond: 2000 white, 2001 gray) and moderate floods (square: 2002 gray, 2003 black). Numbers 1-6 are codes of the sampling stations (see Fig. 1).
Fig. 5 in Effects of the interannual variations in the flood pulse mediated by hypoxia tolerance: the case of the fish assemblages in the upper Paraná River floodplain
Fig. 5. Fish assemblage attributes in the main habitats of the upper Paraná River floodplain in years of short (2000 and 2001) and moderate (2002 and 2003) floods. The black area of the bars represents the proportion of STH. Numbers 1-6 on the abscissa are codes of the sampling stations (see Fig. 1).
Fig. 2 in Effects of the interannual variations in the flood pulse mediated by hypoxia tolerance: the case of the fish assemblages in the upper Paraná River floodplain
Fig. 2. Monthly (a) and daily level (b, between January and March) of the upper Paraná River recorded in Porto São José municipality. In b (right axis), the number of days between January and March, when the upper Paraná River surpassed the threshold of 350 cm (horizontal braked line). The years 2000 and 2001 were considered as years of short floods and 2002 and 2003 as years of moderate floods. Source: National Department of Waters and Electric Energy.
Fig. 6 in Effects of the interannual variations in the flood pulse mediated by hypoxia tolerance: the case of the fish assemblages in the upper Paraná River floodplain
Fig. 6. Relationships between each assemblage attribute and dissolved oxygen, in years of short (white) and moderate floods (black). Attributes where either calculated for the entire fish assemblage (STH+SIH) (a-c) and for the subsets of STH (d-f) and SIH (g-i). Numbers 1-6 are codes of the sampling stations (see Fig. 1).
Spatial source contribution and interannual variation in deposition of dust aerosols over the Chinese Loess Plateau (Haugvaldstad et al 2024)
<h2>Spatial source contribution and interannual variation in deposition of dust aerosols over the Chinese Loess Plateau</h2> <h4>Description:</h4> <p>The data.zip file contains processed FLEXPART/FLEXDUST and ERA5 data. ERA5 is used for meteorological analysis. FLEXDUST is the dust emission inventory used for calculating the source contribution. Combined source contribution is separated for each receptor site. The "clay" suffix in the file name refers the fine dust size-bin, the "silt" suffix refers to the super-coarse size-bin. For more information look at the published manuscript. The MERRA2.zip contain the data used in the FLEXPART MERRA2 intercomparison.</p> <p>The complete 3hourly FLEXPART source contribution and Emissions sensitivity are available from the Norwegian research data archive (DOI: <a href="https://doi.org/10.11582/2023.00135">10.11582/2023.00135</a>). The simulated FLEXDUST 3 hourly dust emission are also available from the Norwegian research data archive (DOI: <a href="https://doi.org/10.11582/2023.00134">10.11582/2023.00134</a>)</p> <h4>Data Format:</h4> <p>NetCDF4, CSV</p> <h4>Usage Notes:</h4> <p>The content of the zip file is used to generate the figures shown in Haugvaldstad et al 2023. To processes and recreate the figures in the manuscript there is a provided docker image that can be pulled with the following command: <em>docker pull ovewh/thesisdocker:build1.1.8</em>. More info <a href="https://hub.docker.com/r/ovewh/thesisdocker">here. </a></p> <p>The following GitHub repositories are used to analyse and plot the data, if the docker image is used codes should be downloaded automatically. </p> <ul> <li>Snakemake workflow: <a href="https://github.com/MasterOnDust/AGU_JGR_CLP_SOURCE_WORKFLOW/tree/AGU-Haugvaldstad-et-al-2023">https://github.com/MasterOnDust/AGU_JGR_CLP_SOURCE_WORKFLOW/tree/AGU-Haugvaldstad-et-al-2023</a></li> <li>Python library with plotting functionality and analysis utilities: <a href="https://github.com/MasterOnDust/Thesis_toolbox/tree/AGU-Haugvaldstad-et-al-2023">https://github.com/MasterOnDust/Thesis_toolbox/tree/AGU-Haugvaldstad-et-al-2023</a></li> <li>Python library for trajectory analysis: <a href="https://github.com/MasterOnDust/flexpart_cluster/tree/AGU-Haugvaldstad-et-al-2023">https://github.com/MasterOnDust/flexpart_cluster/tree/AGU-Haugvaldstad-et-al-2023</a></li> <li>Python library for reading and post processing for FLEXPART and FLEXDUST raw output: <a href="https://github.com/MasterOnDust/DUST/tree/AGU-Haugvaldstad-et-al-2023">https://github.com/MasterOnDust/DUST/tree/AGU-Haugvaldstad-et-al-2023</a></li> </ul>
Dataset for "Diurnal, seasonal, and interannual variations in δ(18O) of atmospheric O2 and its application to evaluate natural/anthropogenic changes in oxygen, carbon, and water cycles" by Ishidoya et al.
<p>The dataset used in the paper "Diurnal, seasonal, and interannual variations in δ(18O) of atmospheric O2 and its application to evaluate natural/anthropogenic changes in oxygen, carbon, and water cycles" by Ishidoya et al. The doi of the preprint of the paper is https://doi.org/10.5194/egusphere-2024-654. The dataset contains the diurnal cycles of delta_atm(18O), delta(O2/N2), y(CO2), and delta(Ar/N2) at Tsukuba, Japan averaged for the period 2013-2022 ("data_for_Fig4.csv"), the rolling average values of delta_atm(18O) and delta(O2/N2) anomalies for 300 data at TKB during August and February, 2017 ("data_for_Fig6.csv"), and the monthly mean values of delta_atm(18O) and the delta(O2/N2) at TKB for the period 2013-2022("data_for_Fig7.csv"). The raw data before averaging are also presented ("raw_data_2013.csv" to "raw_data_2022.csv"). See text of Ishidoya et al. in more details. </p> <p> </p>
Monthly and Interannual variations in upwelling and chlorophyll off the Vietnam Coast in Summer based on deep learning
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Quantitative interpretation of the physical processes associated with the interannual variation of South Asian summer monsoon
<p>This is the CFRAM-A data of "Quantitative interpretation of the physical processes associated with the interannual variation of South Asian summer monsoon". The data includes 10 years: 1997, 1999, 2000, 2001, 2008, 2009, 2013, 2015, 2018, and 2019. Each year includes two "nc" data, one is the partial temperature, the other is the total temperature.</p>
Interannual variation in climate contributes to contingency in post-fire restoration outcomes in seeded sagebrush steppe
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Data from: Interannual variation in foraging decisions in chick-rearing black-legged kittiwakes
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Data from: Interannual variation in effective number of breeders and estimation of effective population size in long-lived iteroparous lake sturgeon (Acipenser fulvescens)
Quantifying interannual variation in effective adult breeding number (Nb) and relationships between Nb, effective population size (Ne), adult census size (N) and population demographic characteristics are important to predict genetic changes in populations of conservation concern. Such relationships are rarely available for long-lived iteroparous species like lake sturgeon (Acipenser fulvescens). We estimated annual Nb and generational Ne using genotypes from 12 microsatellite loci for lake sturgeon adults (n = 796) captured during ten spawning seasons and offspring (n = 3925) collected during larval dispersal in a closed population over 8 years. Inbreeding and variance Nb estimated using mean and variance in individual reproductive success derived from genetically identified parentage and using linkage disequilibrium (LD) were similar within and among years (interannual range of Nb across estimators: 41–205). Variance in reproductive success and unequal sex ratios reduced Nb relative to N on average 36.8% and 16.3%, respectively. Interannual variation in Nb/N ratios (0.27–0.86) resulted from stable N and low standardized variance in reproductive success due to high proportions of adults breeding and the species' polygamous mating system, despite a 40-fold difference in annual larval production across years (437–16 417). Results indicated environmental conditions and features of the species' reproductive ecology interact to affect demographic parameters and Nb/N. Estimates of Ne based on three single-sample estimators, including LD, approximate Bayesian computation and sibship assignment, were similar to annual estimates of Nb. Findings have important implications concerning applications of genetic monitoring in conservation planning for lake sturgeon and other species with similar life histories and mating systems.
Data from: Interannual variations in needle and sapwood traits of Pinus edulis branches under an experimental drought
1) In the Southwest United States, recent large-scale die-offs of conifers raise the question of their resilience and mortality under droughts. To date, little is known about the interannual structural response to droughts. 2) We hypothesized that piñon pines (Pinus edulis) respond to drought by reducing the drop of leaf water potential in branches from year to year through needle morphological adjustments. We tested our hypothesis using a seven-year experiment in central New Mexico with three watering treatments (irrigated, normal and rain exclusion). 3) We analyzed how variation in 'evaporative structure' (needle length, stomatal diameter, stomatal density, stomatal conductance) responded to watering treatment and interannual climate variability. We further analyzed annual functional adjustments by comparing yearly addition of needle area (LA) with yearly addition of sapwood area (SA) and distance to tip (d), defining the yearly ratios SA:LA and SA:LA/d. 4) Needle length (l) increased with increasing winter and monsoon water supply, and showed more interannual variability when the soil was drier. Stomatal density increased with dryness while stomatal diameter was reduced. As a result anatomical maximal stomatal conductance was relatively invariant across treatments. SA:LA and SA:LA/d showed significant differences across treatments and contrary to our expectation were lower with reduced water input. Within average precipitation ranges, the response of these ratios to soil moisture was similar across treatments. However, when extreme soil drought was combined with high VPD, needle length, SA:LA and SA:LA/d became highly non-linear, emphasizing the existence of a response threshold of combined high VPD and dry soil conditions. 5) In new branch tissues, the responses of annual functional ratios to water stress were immediate (same year) and do not attempt to reduce the drop of water potential. We suggest that unfavorable evaporative structural response to drought is compensated by dynamic stomatal control to maximize photosynthesis rates.
Data from: Phenological responses of 215 moth species to interannual climate variation in the Pacific Northwest from 1895 through 2013
Climate change has caused shifts in the phenology and distributions of many species but comparing responses across species is challenged by inconsistencies in the methodology and taxonomic and temporal scope of individual studies. Natural history collections offer a rich source of data for examining phenological shifts for a large number of species. We paired specimen records from Pacific Northwest insect collections to climate data to analyze the responses of 215 moth species to interannual climate variation over a period of 119 years (1895–2013) during which average annual temperatures have increased in the region. We quantified the effects of late winter/early spring temperatures, averaged annually across the region, on dates of occurrence of adults, taking into account the effects of elevation, latitude, and longitude. We assessed whether species-specific phenological responses varied with adult flight season and larval diet breadth. Collection dates were significantly earlier in warmer years for 36.3% of moth species, and later for 3.7%. Species exhibited an average phenological advance of 1.9 days/°C, but species-specific shifts ranged from an advance of 10.3 days/°C to a delay of 10.6 days/°C. More spring-flying species shifted their phenology than summer- or fall-flying species. These responses did not vary among groups defined by larval diet breadth. The highly variable phenological responses to climate change in Pacific Northwest moths agree with other studies on Lepidoptera and suggest that it will remain difficult to accurately forecast which species and ecological interactions are most likely to be affected by climate change. Our results also underscore the value of natural history collections as windows into long-term ecological trends.
Data from: High interannual variation in the diet of a tropical forest frugivore (Hylobates lar)
Frugivores must deal with seasonal changes in fruit availability and changes from year to year, as most species of tropical forest fruiting trees have considerable interannual variation in phenology and many are mast fruiters. We quantified seasonal and interannual changes in the fruit diet in a frugivore and important seed disperser, the white-handed gibbon, Hylobates lar, in Thailand. We used 40-day following data during April and May replicated in six consecutive years to study interannual variability in the diet, and compared it with seasonal changes measured in monthly samples of the same size collected in three successive years. The 40-day periods of following also allowed us to measure the decline in dietary similarity with time over a finer scale. We measured fruit diet similarity between replicated 5-day periods using the percentage overlap (Renkonen's) index, and Jaccard's similarity index. Seasonally, average dietary overlap between adjacent months was low, and similarity approached zero after four months. Average rate of decline in similarity exceeded 20 percent per five day period. Variation in fruit species in the diet between years was high, and was correlated with interannual variation in fruiting phenology. The strongest correlation occurred in the case of Nephelium melliferum, a highly preferred species that dominated the diet in good fruiting years. It is difficult to separate changes in food-species preference from changes in availability from year to year. We devised a relative measure of preference that depends on the degree to which the gibbons rely on prior knowledge to find sources.
Data from: Effective number of breeders provides a link between interannual variation in stream flow and individual reproductive contribution in a stream salmonid
The effective number of breeders that give rise to a cohort (Nb) is a promising metric for genetic monitoring of species with overlapping generations; however, more work is needed to understand factors that contribute to variation in this measure in natural populations. We tested hypotheses related to interannual variation in Nb in two long-term studies of brook trout populations. We found no supporting evidence for our initial hypothesis that inline image reflects inline image (defined as the number of adults in a population at the time of reproduction). inline image was stable relative to inline image and did not follow trends in abundance (one stream negative, the other positive). We used stream flow estimates to test the alternative hypothesis that environmental factors constrain Nb. We observed an intermediate optimum autumn stream flow for both inline image (R2 = 0.73, P = 0.02) and full-sibling family evenness (R2 = 0.77, P = 0.01) in one population and a negative correlation between autumn stream flow and full-sib family evenness in the other population (r = −0.95, P = 0.02). Evidence for greater reproductive skew at the lowest and highest autumn flow was consistent with suboptimal conditions at flow extremes. A series of additional tests provided no supporting evidence for a related hypothesis that density-dependent reproductive success was responsible for the lack of relationship between Nb and NC (so-called genetic compensation). This work provides evidence that Nb is a useful metric of population-specific individual reproductive contribution for genetic monitoring across populations and the link we provide between stream flow and Nb could be used to help predict population resilience to environmental change.
Data from: Phenological responses of 215 moth species to interannual climate variation in the Pacific Northwest from 1895 through 2013
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Data from: Interannual variation in effective number of breeders and estimation of effective population size in long-lived iteroparous lake sturgeon (Acipenser fulvescens)
Open the record for dataset details and reuse information.
Data from: High interannual variation in the diet of a tropical forest frugivore (Hylobates lar)
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Data from: Interannual variations in needle and sapwood traits of Pinus edulis branches under an experimental drought
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Data from: Interannual variation in season length is linked to strong co-gradient plasticity of phenology in a montane annual plant
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