Ecology and Evolution, Journal Year: 2022, Volume and Issue: 12(10)
Published: Oct. 1, 2022
Both intrinsic and extrinsic forces work together to shape connectivity genetic variation in populations across the landscape. Here we explored how geography, breeding system traits, environmental factors influence population patterns of
Language: Английский
Ecological Processes, Journal Year: 2025, Volume and Issue: 14(1)
Published: Jan. 10, 2025
Abstract Introduction Prosopis juliflora (Sw.) DC. substantially threatens dry rangelands due to its invasive attributes, exacerbated by climate change, land-use practices, and anthropogenic activities. Despite the urgent need understand ecological impacts, comprehensive studies examining relationship between functional traits reproductive fitness across diverse habitats scenarios are lacking. This study investigated of in Afar region Ethiopia, focusing on three types: dry-season grazing lands, wet-season wildlife reserves. Methods Plant samples were collected from 192 plots assess their adaptive potential genetic variation, alongside relevant physiographic climatic data. approach aims elucidate contributions these factors observed variation plasticity rangeland types differing land use intensity. Generalized linear mixed models co-occurrence networks employed analyze complex interaction. Results Our findings revealed significant fruiting onset duration, with lands demonstrating a shorter duration compared Genetic was for total seed mass number, indicating robust adaptability. The relative growth rate higher reserves highlighting advantages nutrient-rich environments. Additionally, analysis identified soil type as critical factor influencing trait performance. Conclusions underscores targeted management strategies mitigate impacts , emphasizing role nutrients fitness. offer valuable insights into dynamics species ecosystems inform conservation efforts.
Language: Английский
Citations
0
Journal of Biogeography, Journal Year: 2025, Volume and Issue: unknown
Published: March 7, 2025
ABSTRACT Aim Dispersal of plant propagules and their genes is crucial for responses to landscape heterogeneities, yet the mechanisms behind this dispersal remain unclear. Ficus species depend on wind‐borne fig wasps pollination, but research airflow effects genetic structure has produced conflicting results. Our study aims clarify role wind in shaping such plants with insect pollinators by examining how geomorphological complexity interacts air movements influence structures. Location Southwest China: Sichuan, Yunnan, Guangxi Guizhou provinces. Taxon tikoua Bur., , Moraceae. Methods We sampled 56 F. sites across southwest China, characterised high geomorphologic complexity. River basins predominant winds were visualised regions. Wind connectivity between during main pollination season was modelled based hourly daily data. The maternal biparental reconstructed using chloroplast DNA (cpDNA) nuclear SSR (nuSSR) markers. Links structure, location, parameters estimated Mantel or partial tests. Results plant's defined river systems, two distinct cpDNA groups located Yangtze Pearl basins, respectively. boundaries variation less clearly delimited geographically. Sites mixtures nuSSR concentrated where prevailing arrived from several directions. Stronger between‐site flows increased geneflow similarities, while populations receiving more flow also genetically variable. Main Conclusions reveals gene reflects water that turn respond complexity, thereby directly demonstrating pollinators. data matching pollinator flight times large sample sizes are testing effects.
Language: Английский
Citations
0
Landscape Ecology, Journal Year: 2025, Volume and Issue: 40(4)
Published: April 12, 2025
Language: Английский
Citations
0
Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(4)
Published: April 1, 2025
ABSTRACT Individual‐based simulation has become an increasingly crucial tool for many fields of population biology. However, continuous geography is important to applications, and implementing realistic stable simulations in space presents a variety difficulties, from modeling choices computational efficiency. This paper aims be practical guide spatial simulation, helping researchers implement individual‐based avoid common pitfalls. To do this, we delve into mechanisms mating, reproduction, density‐dependent feedback, dispersal, all which may vary across the landscape, discuss how these affect dynamics, describe parameterize convenient ways (for instance, achieve desired density). We also demonstrate models using current version simulator, SLiM. additionally natural selection—in particular, genetic variation can demographic processes. Finally, provide four short vignettes: pikas that shift their range up mountain as temperatures rise; mosquitoes live rivers juveniles experience seasonally changing habitat; cane toads expand Australia, reaching 120 million individuals; monarch butterflies whose populations are regulated by explicitly modeled resource (milkweed).
Language: Английский
Citations
0
BMC Plant Biology, Journal Year: 2025, Volume and Issue: 25(1)
Published: April 28, 2025
Language: Английский
Citations
0
Frontiers in Plant Science, Journal Year: 2022, Volume and Issue: 13
Published: March 10, 2022
Jujube (family Rhamnaceae) is an important economic fruit tree in China. In this study, we reported 26 chloroplast (cp) sequences of jujube using Illumina paired-end sequencing. The sequence length cp genome was 161, 367-161, 849 bp, which composed a large single-copy region (89053-89437 bp) and small (19356-19362 separated by pair reverse repeat regions (26478-26533 bp). Each encodes the same 130 genes, including 112 unique being quite conserved structure gene sequence. A total 118 single base substitutions (SNPs) InDels were detected 65 accessions. Phylogenetic haplotype network construction methods used to analyze origin evolution its sour-tasting relatives. We 32 effective haplotypes, consisting 20 haplotypes 9 sour-jujube haplotypes. Compared with sour-jujube, showed greater diversity at DNA level. To cultivate crisp sweet varieties featuring strong resistance, combining characteristics cultivated jujube, three hybrid combinations suggested for reciprocal crosses: "Dongzao" × "Jingzao39," "Jingzao60," "Jingzao28." This study provides basis species' identification breeding, lays foundation future research.
Language: Английский
Citations
17
International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 263, P. 130346 - 130346
Published: Feb. 23, 2024
Language: Английский
Citations
3
bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown
Published: July 24, 2024
Individual-based simulation has become an increasingly crucial tool for many fields of population biology. However, continuous geography is important to applications, and implementing realistic stable simulations in space presents a variety difficulties, from modeling choices computational efficiency. This paper aims be practical guide spatial simulation, helping researchers implement individual-based avoid common pitfalls. To do this, we delve into mechanisms mating, reproduction, density-dependent feedback, dispersal, all which may vary across the landscape, discuss how these affect dynamics, describe parameterize convenient ways (for instance, achieve desired density). We also demonstrate models using current version simulator, SLiM. additionally natural selection -- particular, genetic variation can demographic processes. Finally, provide four short vignettes: pikas that shift their range up mountain as temperatures rise; mosquitoes live rivers juveniles experience seasonally changing habitat; cane toads expand Australia, reaching 120 million individuals; monarch butterflies whose populations are regulated by explicitly modeled resource (milkweed).
Language: Английский
Citations
3
Ecology, Journal Year: 2021, Volume and Issue: 102(10)
Published: July 8, 2021
With ongoing climate change, populations are expected to exhibit shifts in demographic performance that will alter where a species can persist. This presents unique challenges for managing plant and may require interventions, including situ management or introduction into new locations. However, few studies have examined how change affect suite of species, effective actions could be mitigating effects. Over the course two experiments spanning 6 yr four sites across latitudinal gradient Pacific Northwest, United States, we manipulated temperature, precipitation, disturbance intensity, quantified effects on demography eight native annual prairie species. Each year planted seeds monitored germination, survival, reproduction. We found strongly influenced seven had increasingly poor with warmer conditions. Across sites, observed 11% recruitment (the proportion survived reproduction) following high disturbance, but just 3.9% 2.3% under intermediate low respectively. Moreover, mean seed production was often more than tenfold greater disturbance. Importantly, most exhibited precipitous declines their population growth rates (λ) warmer-than-ambient experimental conditions frequent intervention sustain populations. Aristida oligantha, C4 grass, only λ increase These results suggest rising temperatures cause many decline, highlighting urgency adaptive practices facilitate restoration newly suitable Frequent intense disturbances critical reduce competitors promote annuals' persistence, even such efforts prove futile future regimes.
Language: Английский
Citations
19
Heredity, Journal Year: 2023, Volume and Issue: 131(5-6), P. 307 - 315
Published: Oct. 27, 2023
An interesting conundrum was recently revealed by R. Abbott when he found that the number of hybrid zones reported in literature for plants is very low, given propensity to hybridise. In another survey on performed over period 1970-2022, we vertebrates 2.3 times greater than vascular plants, even though there are about six more plant species vertebrates. Looking at papers reporting zones, 4.9 plants. These figures support relevance this conundrum. paper aim shed light question providing a structured discussion causes may underlie We propose non-mutually exclusive factors, namely lack or deficit spatial structure, genetic effects hybridisation between non-closely related species, lability time, botanists' perception hybridisation, and population data. There does not appear be single factor explains our puzzle, which applies all cases where detected but no zone reported. It argued some features suggest puzzle not, least entirely, due insufficient knowledge specific cases, hypothesis should addressed with wider range empirical data across different taxonomic groups.
Language: Английский
Citations
7