Ecosphere最新文献

{"title":"Seasonal patterns of habitat use by a mesopredator in boreal forest landscapes fragmented by fire","authors":"Derek A. Arnold,&nbsp;Greg A. Breed,&nbsp;Jared S. Laufenberg,&nbsp;Nathan D. Berg,&nbsp;Mark R. Bertram,&nbsp;Bradley D. Scotton,&nbsp;Knut Kielland","doi":"10.1002/ecs2.70357","DOIUrl":"10.1002/ecs2.70357","url":null,"abstract":"<p>Wildfire is the most impactful disturbance regime in the North American boreal region, driving the structure and composition of forests across the region. Recent climate models predict that increasing fire intensity and frequency will result in a shift from a largely coniferous forest to one with a greater dominance by deciduous species. We investigated how an iconic predator of the boreal system, the Canada lynx (<i>Lynx canadensis</i>), moves through a range of burn scars (4–73 years old). Using GPS collars at 4-h fix rates, we fitted integrated step selection models to lynx movements across an 80-year post-fire chronosequence to assess habitat selection in both deciduous and coniferous forests. We predicted that lynx would primarily select intermediately aged spruce and young deciduous stands, mirroring previous research on the habitat selection of their main prey, snowshoe hares (<i>Lepus americanus</i>). We found, however, that lynx habitat selection peaked at intermediately aged stands in both forest types, with selection for younger deciduous stands in the winter months. There was no seasonal change in coniferous stands as they experience little change in cover across seasons. We hypothesize that lynx select for habitats that maximize capture probability as opposed to simply habitats with the highest hare density. Together, these results show that lynx can be resilient to short-term shifts toward intermediate-aged stands. However, these benefits will likely diminish in the longer term as the decrease in fire return interval may reduce the prevalence of intermediate-aged stands.</p>","PeriodicalId":48930,"journal":{"name":"Ecosphere","volume":"16 8","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ecs2.70357","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144782661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Marine animal forest formed by gorgonians Subergorgia on near-shore mesophotic ecosystems in Reunion Island","authors":"Ludovic Hoarau,&nbsp;Lucie Penin,&nbsp;Emilie Boissin,&nbsp;Héloïse Rouzé,&nbsp;Hendrik Sauvignet,&nbsp;Sophie Bureau,&nbsp;Perrine Mangion,&nbsp;Priscille Labarrère,&nbsp;Lionel Bigot,&nbsp;Pascale Chabanet,&nbsp;Francisco Otero-Ferrer,&nbsp;Lorenzo Bramanti,&nbsp;Mehdi Adjeroud","doi":"10.1002/ecs2.70362","DOIUrl":"10.1002/ecs2.70362","url":null,"abstract":"<p>Mesophotic coral ecosystems (MCEs), occurring between 30 and 150 m depth, are increasingly recognized for their ecological importance, yet they remain underexplored, particularly in the southwestern Indian Ocean. During benthic surveys conducted at depths ranging from 15 to 75 m off northwestern Reunion Island, we documented a dense and extensive marine animal forest (MAF) dominated by large arborescent octocorals <i>Subergorgia</i> cf. <i>suberosa</i>. This monospecific community formed a complex three-dimensional habitat spanning a substantial area at mesophotic depths over the northwestern abrupt slopes of Reunion Island. Colonies reached over 1.5 m in height, providing structural habitat for diverse fish and macroinvertebrate assemblages. A total of 53 fish species from 22 families were recorded in association with this MAF, alongside numerous epibionts and understory anthozoans. Despite its ecological value, this habitat faces significant anthropogenic pressures, particularly from fishing activities. Nearly 25% of photographed <i>S</i>. cf. <i>suberosa</i> colonies were entangled in fishing lines, with visible damage including tissue necrosis and polyp loss affecting up to 47% of colonies. These impacts, along with sedimentation from runoff, raise concerns for the long-term persistence of this mesophotic habitat-forming community, as long-lived, slow-growing organisms like gorgonians may be more impacted by these types of disturbances and take longer to recover than fast-growing organisms. Our findings represent the first quantitative assessment of <i>Subergorgia</i> dominance and associated biodiversity in this region and highlight its role as a potential refuge for shallow reef taxa. The ecological significance, spatial extent, and fragility of this MAF underscore the urgent need for spatially replicated surveys, targeted conservation strategies, and regulation of damaging activities such as fishing. We advocate for increased research efforts focused on mesophotic habitats, with particular attention to the population dynamics and ecological functions of large gorgonians, to better understand the role of MCEs in reef resilience under accelerating environmental changes.</p>","PeriodicalId":48930,"journal":{"name":"Ecosphere","volume":"16 8","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ecs2.70362","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144782716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Different topographic and climatic contexts associated carbon hotspots in a carbon-dense ecoregion","authors":"Trevor A. Carter,&nbsp;Brian Buma","doi":"10.1002/ecs2.70363","DOIUrl":"10.1002/ecs2.70363","url":null,"abstract":"<p>Forested landscapes have the potential to help offset global carbon emissions. However, current global models do not, nor are they intended to, capture the fine-scale variability of the distributions of carbon in aboveground or belowground stocks or their simultaneous variability. Regional investigations are necessary to resolve patterns in carbon that can guide policy and planning, but regional maps that quantify multiple carbon pools are scarce. We quantified the spatial relationships of aboveground and belowground carbon stocks to understand their simultaneous variability across the forested area of the perhumid ecoregion of the Pacific Coastal Temperate Rainforest. Further, we identified topo-climatic contexts associated with unique patterns in both aboveground and belowground carbon stocks by conducting an overlay analysis across the entire ecoregion. We utilized previously published estimates of carbon stocks based on extensive governmental data and machine learning techniques to model simultaneous spatial relationships of aboveground and belowground carbon stocks and generate a map for a high carbon region. We employed Pearson's correlations as well as ANOVA and Tukey honestly significant difference (HSD) tests for comparisons of topography and climate. Approximately 25% (2.6 million ha) of the area across the perhumid ecoregion had similar trends in aboveground and belowground stocks (convergence). Likewise, 20% of the ecoregion had opposite trends of aboveground and belowground stocks (divergence), and 56% of the ecoregion experienced no relationship (moderate conditions) between aboveground and belowground stocks. Convergence areas consist of carbon hotspots associated with 1.3 million ha and 794 Mg C ha⁻¹ on average, or carbon cold spots associated with 1.2 million ha and 224 Mg C ha⁻¹. Areas with convergence, divergence, and moderate carbon stocks all had unique associations with slope, elevation, aspect, mean annual precipitation, and annual mean temperature. High levels of aboveground carbon were associated with steeper slopes, while high levels of belowground carbon were associated with high levels of precipitation. The interactions between slope, precipitation, and temperature correspond with carbon convergence and divergence, likely due to water accumulation which impacts the decomposition of organic matter in soil. These data are critical to regional planning and carbon policy and inform expectations for future carbon storage as the climate changes.</p>","PeriodicalId":48930,"journal":{"name":"Ecosphere","volume":"16 8","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ecs2.70363","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144782715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Habitat attributes mediate top-down and bottom-up drivers of community development in temperate and tropical algae","authors":"Griffin Srednick,&nbsp;Stephen E. Swearer","doi":"10.1002/ecs2.70345","DOIUrl":"10.1002/ecs2.70345","url":null,"abstract":"<p>Global threats to ecosystems have galvanized ecologists to better understand the anthropogenic impacts of biotic and abiotic homogenization on ecological trajectories. However, contemporary understanding of spatiotemporal trajectories in ecosystems composed of competitive and consumptive interactions is largely observational or, if more mechanistic, based on simplified models or select aspects of ecological function (e.g., stability of primary production). Here, we describe a pair of 9-month experiments that explore the influence of top-down versus bottom-up drivers of temporal variation within consumer-resource assemblages in tropical and temperate marine ecosystems. Specifically, we examine the trajectories of tropical and temperate algal communities and metacommunities in response to nutrient and herbivory gradients to assess the drivers of spatiotemporal heterogeneity in ecological dynamics. We find that temporal variation (i.e., spatiotemporal asynchrony) in both tropical and temperate algal communities and metacommunities is largely driven by nutrient gradients (i.e., bottom-up effects), whereas herbivory gradients (i.e., top-down effects) appear to have a weaker influence only on tropical algal assemblages. Importantly, we find that the interactive effects of habitat heterogeneity, herbivory levels, and nutrient levels are strongest early (i.e., within 150 days) in algal successional dynamics at the metacommunity scale and that algal communities appear to converge on greater similarity, regardless of environmental conditions, within 300 days. These findings support the notion that temporal dynamics within a trophic level are partially determined by adjacent trophic levels, highlighting the importance of considering biotic and abiotic drivers of spatiotemporal asynchrony both within and across trophic levels within communities.</p>","PeriodicalId":48930,"journal":{"name":"Ecosphere","volume":"16 8","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ecs2.70345","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144773477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Do oribatid mites of tropical montane rainforests respond to nitrogen and phosphorus additions?","authors":"Laura M. Sánchez-Galindo,&nbsp;Dorothee Sandmann,&nbsp;Franca Marian,&nbsp;Mark Maraun,&nbsp;Stefan Scheu","doi":"10.1002/ecs2.70348","DOIUrl":"10.1002/ecs2.70348","url":null,"abstract":"<p>Nitrogen (N) and phosphorus (P) depositions worldwide are increasing the risks of biodiversity and functionality loss in terrestrial ecosystems, particularly in tropical regions. However, the effects of increased nutrient inputs on soil biodiversity in tropical regions remain largely unknown. Here, we investigated the response of one of the most diverse groups of soil invertebrates, oribatid mites (Acari: Oribatida), to the long-term input of moderate rates of N and P into montane rainforests along an altitudinal gradient (1000, 2000, and 3000 m) in Ecuador. The response of oribatid mites to nutrient additions was investigated after 1, 3, and 10 years. Overall, variations in oribatid mite diversity and richness due to nutrient additions were low and restricted to the 1000-m site, where the combined addition of N and P resulted in significantly reduced density and richness of oribatid mites after 10 years. In general, oribatid mite community compositions differed strongly between the altitudinal sites and remained remarkably stable across the study period. Changes in oribatid mite community composition during the study period were driven by changes in temperature, precipitation, and relative humidity rather than by the addition of N and P. Our results suggest that oribatid mites in tropical montane rainforests are rather insensitive to moderate additional input of N and P, pointing to an outstanding stability of these soil animal communities. Shifts in climatic factors, rather than changes in resource-associated factors such as nutrients, may pose a more significant threat to oribatid mite communities of tropical montane rainforests.</p>","PeriodicalId":48930,"journal":{"name":"Ecosphere","volume":"16 7","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ecs2.70348","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144714916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Suppression of Australian savanna ants shows “the little rulers” do not rule over spider or beetle assemblages","authors":"Sarah N. Bonney,&nbsp;Benjamin D. Hoffmann,&nbsp;Alan N. Andersen","doi":"10.1002/ecs2.70354","DOIUrl":"10.1002/ecs2.70354","url":null,"abstract":"<p>Ants are often referred to as “the little things that rule the world” because of the critical roles they play as ecosystem engineers and through trophic and non-trophic interactions. We describe an experimental test of the influence of ants on spiders and beetles in an Australian tropical savanna. We experimentally suppressed ant abundance through baiting in six plots, each matched with adjacent reference plots, across two sites (Territory Wildlife Park [TWP] and Tropical Ecosystem Research Centre [TERC]), and documented the impact on ground and arboreal spider and beetle communities. At the TWP site, ants were highly abundant and diverse, dominated by species of aggressive <i>Iridomyrmex</i>. Ant diversity was lower and <i>Iridomyrmex</i> low in abundance at the TERC site. At the TWP site, suppression treatment predominantly affected species of <i>Iridomyrmex</i>, reducing overall ant abundance on the ground by 52%–77%, but because few <i>Iridomyrmex</i> forgage arboreally, there was no change on vegetation. Suppression treatment had little effect on ant abundance on both the ground and vegetation at the TERC site. Despite marked ant suppression on the ground at TWP, we observed little response from either spiders or beetles after two years. Among spiders, the only response was a decrease (by 50%) in abundance of the ant-associated family Prodidomidae. One beetle family (Scarabaeidae) also declined after ant suppression but was a suspected nontarget casualty of baiting. No spider or beetle family showed the increase in abundance that we predicted. Curiously, an increase was shown by the spider family Clubionidae at TERC despite minimal ant suppression. At both sites, experimental treatment had little influence on spiders and beetles on vegetation, consistent with the lack of suppression of ants on plants. The general lack of effect of ant suppression implies that there is surprisingly limited regulation of arthropod communities by ants in our study system. This contrasts with findings from other ant manipulation experiments and is particularly surprising as ant abundance is so high in Australian savannas. While our experiment involved ant suppression rather than elimination, our results suggest that Australian savannas are resilient to large reductions of a ubiquitous faunal group.</p>","PeriodicalId":48930,"journal":{"name":"Ecosphere","volume":"16 7","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ecs2.70354","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144714746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Repeated hurricane disturbance has minimal impact on shallow coastal infaunal communities","authors":"W. Cyrus Clemo,&nbsp;Kelly M. Dorgan,&nbsp;Brian Dzwonkowski,&nbsp;Davin J. Wallace","doi":"10.1002/ecs2.70341","DOIUrl":"10.1002/ecs2.70341","url":null,"abstract":"<p>Disturbances are important drivers of seafloor community structure and diversity, especially in sediment infaunal communities with limited mobility. Shallow coastal sediment communities contribute to global nutrient cycling and carbon storage but also experience large-scale disturbances, including storms. Tropical cyclones and other extreme storms can dramatically restructure shallow sedimentary fabrics and disrupt infauna through resuspension and sediment transport and deposition. However, whether persisting storm-induced physical changes to sedimentary habitats affect post-storm infaunal community development is poorly studied or understood. Here we assess the relationship between relatively immediate (10 days) and more gradual (6 weeks to 8 months) changes to surficial sediment properties (grain size distribution, porosity, organic content) and infaunal community structure in Alabama, USA, coastal sediments following two consecutive tropical cyclone impacts in the fall of 2020: Hurricane Sally, where the storm's inner core passed directly over the study sites, and Hurricane Zeta, where the storm passed to the west of the sites. We hypothesized that infaunal communities at sites exhibiting drastic and persistent post-storm sedimentary changes (i.e., thick sand deposition over mud) would have greater losses of abundance and diversity and larger differences between pre- and post-storm community structure compared to communities at less physically restructured sites. However, almost all sites did not experience significant post-hurricane reductions in infaunal abundance or diversity or changes to community composition corresponding with the degree of sedimentary change. The lack of storm effects on infauna likely resulted from a combination of pre-Sally disturbances, seasonal recruitment, and opportunistic taxa adapted to dynamic coastal sediments. Our results indicate that infauna in frequently disturbed areas such as nearshore sediments adjacent to estuarine outflow may be resistant to physical habitat disturbance but also emphasize the importance of seasonal dynamics and disturbance history in shaping infaunal communities. These relationships will be especially important to understand as storm intensity is predicted to increase with climate change.</p>","PeriodicalId":48930,"journal":{"name":"Ecosphere","volume":"16 7","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ecs2.70341","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144712129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Near-term lake water temperature forecasts can be used to anticipate the ecological dynamics of freshwater species","authors":"Ricardo Paíz,&nbsp;R. Quinn Thomas,&nbsp;Cayelan C. Carey,&nbsp;Elvira de Eyto,&nbsp;Ian D. Jones,&nbsp;Austin D. Delany,&nbsp;Russell Poole,&nbsp;Pat Nixon,&nbsp;Mary Dillane,&nbsp;Valerie McCarthy,&nbsp;Suzanne Linnane,&nbsp;Eleanor Jennings","doi":"10.1002/ecs2.70335","DOIUrl":"10.1002/ecs2.70335","url":null,"abstract":"<p>Near-term ecological forecasting can be used to improve operational resource management in freshwater ecosystems. Here, we developed a framework that uses water temperature forecasting as a tool to predict the migrations of Atlantic salmon (<i>Salmo salar</i>) and European eel (<i>Anguilla anguilla</i>) between freshwater and the sea. We used historical observations of lake water temperature and fish migrations from an internationally important long-term monitoring site (the Burrishoole catchment, Ireland) to generate daily probabilistic predictions (0%–100%) of when relatively large numbers of fish migrate. For this, we produced daily lake water temperature forecasts that extended up to 34 days into the future using Forecasting Lake and Reservoir Ecosystems (FLARE), an open-source ensemble-based forecasting system. We used this system to forecast lake water temperature conditions associated with percentile-based fish migrations. Two metrics, P66 and P95, were used to indicate days with migrations in excess of 66% and 95%, respectively, of the historical daily fish counts. The results were first validated against water temperature observations, with an overall root mean squared error (RMSE) of 0.97°C. Our forecasts outperformed two other possible water temperature forecasting approaches, using site climatology (1.36°C) and site persistence (1.19°C). The predictions for fish migrations performed better for the P66 metric than for the more extreme P95 metric based on the continuous ranked probability score (CRPS), and the best results were obtained for the salmon downstream migration. This forecasting approach with quantified uncertainty levels has the potential to assist decision making, especially in the face of increased risks for these species. We conclude by discussing the scalability of the framework to other settings as a tool aimed at supporting management practices in real time.</p>","PeriodicalId":48930,"journal":{"name":"Ecosphere","volume":"16 7","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ecs2.70335","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144681318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Delays in peak physiological activity may reduce resource acquisition as trees recover from wildfire","authors":"Kelsey Bryant,&nbsp;Laurel Lynch,&nbsp;Crystal Kolden,&nbsp;Jeffrey Stenzel,&nbsp;Chad Hanson,&nbsp;Christopher Still,&nbsp;Justin Mathias,&nbsp;Brandon Light,&nbsp;Cooper Moon,&nbsp;Tara Hudiburg","doi":"10.1002/ecs2.70325","DOIUrl":"10.1002/ecs2.70325","url":null,"abstract":"<p>Few studies have investigated how mature trees recover physiologically from wildfire damage, and none have comprehensively linked tree hydraulics with belowground function. Uncovering mechanistic links between rates of above- and belowground recovery is necessary for improving predictions of forest resilience and carbon dynamics following wildfire. We coupled continuous measurements of tree water flow and soil CO₂ efflux with detailed physiological measurements of above- and belowground function following a mixed-severity wildfire. We found that mature <i>Pinus ponderosa</i> trees with up to 85% canopy and stem damage resumed physiological functioning by the second growing season post-fire. However, these trees also exhibited delayed peak water uptake (relative to less-burned trees) that coincided with summer heat and drought. Our results suggest fire damage may prevent the critical timing in which peak physiological function overlaps with optimal growing conditions (e.g., moisture and nutrient availability). As a result, we suggest the degree of root and microbial damage should be assessed along with observed aboveground damage to more effectively predict tree recovery potential. While significantly damaged trees resumed typical hydraulic function within two years, observed delays in peak water uptake could require higher water and nutrient use efficiency to maintain carbon sequestration rates.</p>","PeriodicalId":48930,"journal":{"name":"Ecosphere","volume":"16 7","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ecs2.70325","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144673088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Soil organic carbon sequestration mediated by plant–microbe interactions after compost application","authors":"Shelby C. McClelland,&nbsp;Meagan E. Schipanski","doi":"10.1002/ecs2.70267","DOIUrl":"10.1002/ecs2.70267","url":null,"abstract":"<p>Organic amendments like compost can enhance soil health and climate change mitigation in managed grassland ecosystems. We previously demonstrated in a northern Colorado cool-season pasture that infrequent compost applications support net soil organic carbon sequestration. Here, we examined plant and soil biota responses over three growing seasons to better understand how plant–soil feedbacks support net sequestration under compost. Compost doubled soil P and increased soil K by one-third, but slightly decreased soil pH in the top 10 cm of soil. Differences in plant production and plant community composition were immediate after application and sustained over the experimental period while soil biota were slower to respond. A path analysis (χ² = 14.0, <i>p</i> = 0.23) suggests that the plant effect on soil organic carbon sequestration (<i>R</i>² = 0.67) was fully mediated by the soil microbial community, especially bacteria. Our work supports the importance of microbially derived inputs for building soil organic matter in grasslands receiving organic amendments.</p>","PeriodicalId":48930,"journal":{"name":"Ecosphere","volume":"16 7","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ecs2.70267","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144666190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}