Ecogeographic Study of Ipomoea Species in Mauritius, Indian Ocean DOI Creative Commons
Yakshini Boyjnath, Ehsan Dulloo, Vishwakalyan Bhoyroo

et al.

Plants, Journal Year: 2024, Volume and Issue: 13(19), P. 2706 - 2706

Published: Sept. 27, 2024

The wild relatives of crops play a critical role in enhancing agricultural resilience and sustainability by contributing valuable traits for crop improvement. Shifts climatic conditions human activities threaten plant genetic resources food agriculture (PGRFA), jeopardizing contributions to future production security. Studies inventories the extant agrobiodiversity, terms numbers distribution patterns species their diversity, are primordial developing effective comprehensive conservation strategies. We conducted an ecogeographic study on Ipomoea assessed distribution, ecological preferences across different topographic, altitudinal, geographical, gradients, at total 450 sites Mauritius. Species maps overlaid with data highlighted specific distribution. Principal Component Analysis (PCA) revealed was influenced geographical factors. Regional richness analyses indicated varying densities, some exhibiting localized distributions while other showed diverse patterns. Field surveys identified 14 2 subspecies out 21 reported A gap ex situ germplasm collections observed several were as threatened. Further investigations more long-term monitoring effort better guide decisions proposed.

Language: Английский

Precipitation and soil water amplify the influence of climatic factors on global vegetation reversals DOI Creative Commons
Shunping Ji, Zhaohui Luo,

Shouhai Shi

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: March 26, 2025

Abstract Satellite observations reveal significant changes in global terrestrial vegetation over the past four decades. However, neglect of interactions among influencing factors has sparked intense debates regarding dynamics at regional and scales. This study systematically evaluated spatiotemporal evolution (1982–2020) their complex driving mechanisms by integrating five remote sensing-derived products with climate socio-economic data. The results showed that approximately 51.98% area experienced change reversals between 1995 2005, “greenness” predominantly transitioning from increase to decrease. percentage differs different zones, ranging 46.41% cold zone 54.99% tropical zone. phenomenon was primarily driven weakening (6% ± 4%) interactive coupling total precipitation (TP), soil water (SW), other (e.g., temperature, vapor pressure deficit (VPD)), rather than being mainly attributed VPD as reported previous studies. findings underscore need more explicitly consider impact water-related on a warming climate.

Language: Английский

Citations

0
Impacts of Climatic Fluctuations and Vegetation Greening on Regional Hydrological Processes: A Case Study in the Xiaoxinganling Mountains–Sanjiang Plain Region, Northeastern China DOI Creative Commons
Chi Xu, Zhijie Zhang,

Zhenghui Fu

et al.

Remote Sensing, Journal Year: 2024, Volume and Issue: 16(15), P. 2709 - 2709

Published: July 24, 2024

The Xiaoxinganling Mountains–Sanjiang Plain region represents a crucial ecological security barrier for the Northeast China and serves as vital national grain production. Over past two decades, has undergone numerous restoration projects. Nevertheless, combined impact of enhanced vegetation greening global climate change on regional hydrological cycle remains inadequately understood. This study employed distributed model ESSI-3, reanalysis datasets, multi-source satellite remote sensing data to quantitatively evaluate influences dynamics processes. period spans from 2000 2020, during which there were significant increases in precipitation leaf area index (p < 0.05). simulation results exhibited strong agreement with observed river discharge, evapotranspiration, terrestrial water storage anomalies, thereby affirming ESSI-3 model’s reliability assessment. By employing both constant scenario that solely considered dynamic integrated dynamics, findings reveal that: (1) Regionally, driven by increased significantly augmented runoff fluxes (0.4 mm/year) components (2.57 mm/year), while evapotranspiration trends downward, attributed primarily reductions solar radiation wind speed; (2) Vegetation reversed decreasing trend an increasing trend, thus exerting negative storage. However, long-term simulations demonstrated (0.38 (2.21 continue increase, mainly due increments surpassing those evapotranspiration; (3) Spatially, altered surface soil moisture content eastern forested areas increase decrease. These suggested sub-regional initiatives, such afforestation, influence cycle, especially higher greening. persistent could effectively mitigate deficits induced study’s outcomes provide basis alleviating concerns regarding potential consumption risks associated future extensive projects, offering scientific guidance sustainable resource management.

Language: Английский

Citations

3
Ecotypic variation and environmental influence on saffron (Crocus sativus L.) vegetative growth: a multivariate performance analysis DOI
Mohamed Ben El Caid, Mohamed Lachheb,

Khalid Lagram

et al.

Journal of Applied Research on Medicinal and Aromatic Plants, Journal Year: 2024, Volume and Issue: 43, P. 100601 - 100601

Published: Nov. 6, 2024

Language: Английский

Citations

3
Multimodal learning for vegetation patterns classification in global arid and semi-arid regions DOI
Yajun Zhang, Li Li, Zhenwei Zhang

et al.

Chaos Solitons & Fractals, Journal Year: 2025, Volume and Issue: 194, P. 116187 - 116187

Published: March 4, 2025

Language: Английский

Citations

0
Vegetation pattern formation and transition in dryland ecosystems with finite soil resources and inertia DOI Creative Commons
Giancarlo Consolo, Carmela Curró, Gabriele Grifó

et al.

Physica D Nonlinear Phenomena, Journal Year: 2025, Volume and Issue: unknown, P. 134601 - 134601

Published: March 1, 2025

Language: Английский

Citations

0
Spatiotemporal Heterogeneity of Vegetation Cover Dynamics and Its Drivers in Coastal Regions: Evidence from a Typical Coastal Province in China DOI Creative Commons
Yiping Yu, Dong Liu, Shiyu Hu

et al.

Remote Sensing, Journal Year: 2025, Volume and Issue: 17(5), P. 921 - 921

Published: March 5, 2025

Studying the spatiotemporal trends and influencing factors of vegetation coverage is essential for assessing ecological quality monitoring regional ecosystem dynamics. The existing research on variations their driving predominantly focused inland ecologically vulnerable regions, while coastal areas received relatively little attention. However, with unique geographical, ecological, anthropogenic activity characteristics, may exhibit distinct distribution patterns mechanisms. To address this gap, we selected Shandong Province (SDP), a representative province in China significant natural socioeconomic heterogeneity, as our study area. investigate coastal–inland differentiation dynamics its underlying mechanisms, SDP was stratified into four geographic sub-regions: coastal, eastern, central, western. Fractional cover (FVC) derived from MOD13A3 v061 NDVI data served key indicator, integrated multi-source datasets (2000–2023) encompassing climatic, topographic, variables. We analyzed characteristics dominant across these sub-regions. results indicated that (1) FVC displayed complex notable gradient where decreased towards coast. (2) influence various significantly varied sub-regions, dominating an east–west polarity, i.e., explanatory power intensified westward resurging zones. (3) intricate interaction multiple influenced spatial FVC, particularly dual-factor synergies interactions between other were crucial determining coverage. Notably, zone exhibited high sensitivity to drivers, highlighting exceptional ecosystems human activities. This provides insights different geographical zones well factors. These findings can help understand challenges faced protecting vegetation, facilitating deeper insight responses enabling formulation effective tailored strategies promote sustainable development areas.

Language: Английский

Citations

0
Surface soil phytolith assemblages across arid and semi-arid regions of northern China, and their implications for quantitative reconstruction of precipitation DOI

Yuhan Kuai,

Shipei Dong,

Zhuolun Li

et al.

Palaeogeography Palaeoclimatology Palaeoecology, Journal Year: 2025, Volume and Issue: unknown, P. 112979 - 112979

Published: April 1, 2025

Language: Английский

Citations

0
Climate-Driven Shifts in the Distribution of Valonia Oak from the Last Glaciation to the Antropocene DOI Open Access
Alı Uğur Özcan, Derya Gülçin, Javier López Tirado

et al.

Forests, Journal Year: 2025, Volume and Issue: 16(5), P. 776 - 776

Published: May 4, 2025

The Quercus genus is found across a broad latitudinal range, and its spread in heterogeneous ecosystems influenced by environmental, genetic, anthropogenic factors. However, Mediterranean oak ecosystems, particular, have been significantly impacted climate-driven shifts. These shifts reshape the composition spatial configuration of great number species. Here, this study evaluates impact climate change on habitat suitability Valonia (Quercus ithaburensis subsp. macrolepis (Kotschy) Hedge & Yalt.) particularly focuses understanding whether population native or was introduced to Karagüney Mountains, Türkiye. Using ecological niche modeling with MaxEnt data from CHELSA-TraCE21k (a 1 km time series), we built 120 models analyze different climatic periods Last Glacial Maximum (LGM) (21 ka BP) present. results indicate that primarily temperature- precipitation-related variables. In fact, temperature fluctuations clearly affect target species study. most significant factors are mean diurnal range (bio2; 33.1%), precipitation wettest month (bio13; 19%), annual (bio1; 16.7%). Paleoclimatic predictions show suitable habitats contracted during early Holocene but expanded afterward, current distributions aligning more closely natural range. other words, it can be stated oak’s has gradually improved LGM present, both total ranges expanding over time. demonstrated long-term stability, resilience, adaptability change, making potential alternative for future scenarios. addition, support hypothesis species’ Mountains relict, previously unrecognized as native. This improves our knowledge about distribution environmental preferences oak, which important underpinning conservation strategies.

Language: Английский

Citations

0
Climate change and variability as drivers of vegetation dynamics in Bontioli Natural Reserve, West African drylands DOI Creative Commons
Issaka Abdou Razakou Kiribou, Théodore Nikiema, Kangbéni Dimobe

et al.

Environmental Challenges, Journal Year: 2025, Volume and Issue: unknown, P. 101175 - 101175

Published: May 1, 2025

Language: Английский

Citations

0
An effective Allee effect may induce the survival of low-density predator DOI Creative Commons

Li-Ying Ning,

Xiaofeng Luo, Bai-Lian Li

et al.

Results in Physics, Journal Year: 2023, Volume and Issue: 53, P. 106926 - 106926

Published: Sept. 11, 2023

Allee effect, as one of the research hotspots in ecology and conservation biology, extremely easily affects distribution population space, especially for low-density population. In ecosystem, spatial predator is more vulnerable to effect since density always smaller than that prey, but relevant attention paid it few. this paper, we establish analyze a predator–prey system incorporating on Theoretically, use multi-scale analysis derive amplitude equation obtain different Turing patterns under intensities effect. Numerically, verify theoretical results. We also find growth rate significantly inhibited time reaching equilibrium tends be slower with increase intensity within certain limits. More interestingly, discovered extent stable although may lead complex dynamic behaviors. Our results help better understand species invasion nature ecology.

Language: Английский

Citations

9