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Looking beyond the mountain: dispersal barriers in a changing world.

Dispersal barriers have demographic, evolutionary and ecosystem-wide consequences. With ongoing changes in the environment, it is likely that some dispersal barriers will disappear while others will appear, and it is crucial to understand these dynamics to forecast species distributions and adaptive potential. Here we review recent literature on the ecological and evolutionary aspects of dispersal

ANALYSIS OF PLANT PHENOLOGY DYNAMICS IN SPAIN FROM 1983 TO 2020 USING SATELLITE IMAGERY

This study spatially analyzes plant phenology and its variations over time in mainland Spain and the Balearic Islands. To conduct the analysis, a nearly 40-year span time series (1983-2020) was generated by merging NDVI vegetation index values from satellite images sourced from NOAA-AVHRR and MODIS sensors. The phenological variables were calculated using TIMESAT 3.3, which extracted 13 phenometri

The anthropogenic imprint on temperate and boreal forest demography and carbon turnover

Aim: The sweeping transformation of the biosphere by humans over the last millennia leaves only limited windows into its natural state. Much of the forests that dominated temperate and southern boreal regions have been lost and those that remain typically bear a strong imprint of forestry activities and past land-use change, which have changed forest age structure and composition. Here, we ask how

Assessing topographic effects on forest responses to drought with multiple seasonal metrics from Sentinel-2

Topography determines run-off direction, redistributes groundwater, and affects land surface solar radiation loads and the associated evaporative forcing, consequently, topography can modulate the impact of drought and heat waves on ecosystems. This topographic modulation effect, which typically occurs at the local scale, is often overlooked when assessing ecosystem drought responses using moderat

Fire frequency drives decadal changes in soil carbon and nitrogen and ecosystem productivity

Fire frequency is changing globally and is projected to affect the global carbon cycle and climate. However, uncertainty about how ecosystems respond to decadal changes in fire frequency makes it difficult to predict the effects of altered fire regimes on the carbon cycle; for instance, we do not fully understand the long-term effects of fire on soil carbon and nutrient storage, or whether fire-dr

Challenges and best practices for deriving temperature data from an uncalibrated UAV thermal infrared camera

Miniaturized thermal infrared (TIR) cameras that measure surface temperature are increasingly available for use with unmanned aerial vehicles (UAVs). However, deriving accurate temperature data from these cameras is non-trivialsince they are highly sensitive to changes in their internal temperature and low-cost models are often not radiometrically calibrated. We present the results of laboratory a

Delayed Collapse of the North Pacific Intermediate Water After the Glacial Termination

Carbon release from the North Pacific in glacial-interglacial cycles has been mainly linked to the North Pacific Intermediate Water (NPIW) formation and associated carbon/nutrient water upwelling and biological productivity changes. However, relationship between NPIW and atmospheric CO2 change in the early interglacial remains unclear. Here we report a high-resolution sediment record of NPIW evolu

Reconstructing Past Global Vegetation With Random Forest Machine Learning, Sacrificing the Dynamic Response for Robust Results

Vegetation is an important component in the Earth system, providing a direct link between the biosphere and atmosphere. As such, a representative vegetation pattern is needed to accurately simulate climate. We attempt to model global vegetation (biomes) with a data-driven approach, to test if this allows us to create robust global and regional vegetation patterns. This not only provides quantitati

Ecosystem CO2 Exchange and Its Economic Implications in Northern Permafrost Regions in the 21st Century

Climate warming increases carbon assimilation by plant growth and also accelerates permafrost CO2 emissions; however, the overall ecosystem CO2 balance in permafrost regions and its economic impacts remain largely unknown. Here we synthesize in situ measurements of net ecosystem CO2 exchange to assess current and future carbon budgets across the northern permafrost regions using the random forest

Optimized wetland rewetting strategies can control methane, carbon dioxide, and oxygen responses to water table fluctuations

Rewetting is widely promoted as a climate mitigation strategy to preserve soil carbon in drained wetlands, although rewetting may enhance methane production and corresponding emissions. The increase in methane emissions following rewetting might be underestimated without considering near-surface methane oxidation under a fluctuating water table. Here, we refined the methane module in Lund-Potsdam-

High-resolution spatiotemporal dynamic simulation and driving force analysis of carbon emissions in coastal cities : The case of Ningbo City

Coastal port cities are key regions for carbon emissions (CEs) research in China, due to their industrial density, frequent transportation, and diverse human activities. Taking Ningbo City as a case study, this study employed a top-down accounting method and integrated multiple sources of geospatial data to reveal the spatiotemporal distribution characteristics of CEs from four sectors, including

Global warming driving increased winter CO2 emissions in the Northern Hemisphere permafrost region

Global warming accelerates the breakdown of carbon stored in permafrost regions, releasing it into the atmosphere and amplifying climate change, particularly during winter when photosynthesis ceases. The Northern Hemisphere's permafrost is primarily concentrated in two key regions — the Arctic and the Tibetan Plateau — each with distinct environmental characteristics. However, previous studies oft

Accounting for the Scarcity of Time as Patients Approach End of Life: The Construction of End-Weighted Time Toxicity

ObjectivesPeople with serious illness approaching end of life often end up in emergency and hospital care, frequently against expressed preferences. Consequently, oncology trials record care days as a measure of treatment burden called “time toxicity.” However, this measure ignores the diminishing marginal utility of time: that the value of a day is higher when fewer remain. We aimed to incorporat

Disentangling the Climate–VPD–GPP Nexus: Global Patterns and Underlying Drivers

Atmospheric vapor pressure deficit (VPD) is a key climatic factor that influences vegetation productivity and the global carbon cycle. With ongoing climate warming, VPD has been rising globally. However, the effects of this increase on gross primary production (GPP), especially under different driving mechanisms, remain unclear. This uncertainty limits our ability to predict terrestrial ecosystem

Persistent El Niño-like conditions over the western Pacific during the Bølling–Allerød interstadial

Projecting El Niño-Southern Oscillation responses to future climate change are hindered by limited paleoclimate records spanning past abrupt climate transitions. This study combines multi-proxy records from the Northwest Borneo Trough over the past 30 kyr with transient climate simulations, reconstructing tropical western Pacific hydroclimate during Heinrich events and Bølling–Allerød warming. Res

Effective science communication in the face of water crises: a community perspective on challenges and best practice in HELPING

Addressing global water crises demands effective communication across diverse audiences, especially in initiatives such as the scientific decade HELPING by the International Association of Hydrological Sciences (IAHS). This study synthesizes insights from the hydrological community, gathered through interviews, workshops and a digital survey. We identify key challenges and best practices across th

Dynamics and future projections of Indian forest carbon stocks under different emission pathways using CMIP6 and LPJ-GUESS

Forests are integral to the global carbon cycle, acting as major carbon sinks, though their capacity can be altered by climate and land use changes. India has a diverse forest ecosystem, but the dynamics and changes in its carbon stocks under a changing climate are not well understood. This study investigates the regional and temporal changes in vegetation carbon biomass (VCB) within Indian forest

Seven Decades of Aridity Transitions in China : Spatiotemporal Patterns and Contemporary Hydrological Responses

Highlights: What are the main findings? A ~32-year aridity cycle is detected across China through Fourier spectrum analysis of 1950–2022 aridity data. An arid–humid climate divide is revealed by entropy-based climate stability indicators. Recent remote sensing data show a nationwide expansion of surface water bodies and localized groundwater recovery. What are the implications of the main findings