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Extreme and Heterogeneous Conditions of the Desert Wetland Chott Ech Chergui (Algeria) Allow Isolating Halophilic, Alkalophilic and Thermophilic Bacteria 阿尔及利亚沙漠湿地Chott Ech Chergui的极端和异质条件允许分离嗜盐、嗜碱和嗜热细菌

IF 2 4区环境科学与生态学

Wetlands Pub Date : 2023-12-04 DOI: 10.1007/s13157-023-01757-5

Aicha Mehirou Zouggar, Pascal Mirleau, Anne Chenuil, Francoise Denis, Aurore Caruso, Sidi Mohammed El Amine Abi Ayad, Sid Ahmed Chawki Lamara

{"title":"Extreme and Heterogeneous Conditions of the Desert Wetland Chott Ech Chergui (Algeria) Allow Isolating Halophilic, Alkalophilic and Thermophilic Bacteria","authors":"Aicha Mehirou Zouggar, Pascal Mirleau, Anne Chenuil, Francoise Denis, Aurore Caruso, Sidi Mohammed El Amine Abi Ayad, Sid Ahmed Chawki Lamara","doi":"10.1007/s13157-023-01757-5","DOIUrl":"https://doi.org/10.1007/s13157-023-01757-5","url":null,"abstract":"Wetlands concentrate biodiversity, particularly in arid regions. Chott Ech Chergui (Algeria), one of the biggest wetlands of the north African desert, presents extreme temperatures and salinity conditions. We initiated a physico-chemical and microbiological survey at seven sites encompassing various conditions (salt lakes, freshwater lakes and hot springs), through a one-year monthly sampling campaign. Four sites under the influence of the spring showed little temporal physio-chemical variation. Three sites displayed higher variation and the aridity level, high from late spring until autumn, was a strong predictor of water chemistry. We evidenced extremophile bacteria. Among 320 bacterial isolates tested for thermo-, acido- and alcalino- tolerance, 39, affiliated to Firmicutes and Proteobacteria, were successfully maintained and underwent physiological, biochemical and molecular characterizations. Thermotolerance was recorded up to 100 °C for a water isolate affiliated to Geobacillus stearothermophilus. Halotolerance was recorded up to 30% NaCl (w:v) for soil isolates affiliated to Salinicola zeshunii, Chromohalobacter beijerinckii and Virgibacillus halodenitrificans. Acido- and alcalo- tolerance were recorded for a pH range from 5 to 11 for several soil and water isolates affiliated to Exiguobacterium, Bacillus, Salinicola and Chromohalobacter genus. Our results comfort the interest of studying extremophile diversity in wetlands of the highly arid Sahara region.","PeriodicalId":23640,"journal":{"name":"Wetlands","volume":"40 6","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138524631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wetland water quality patterns and anthropogenic pressure associations across the continental USA 美国大陆湿地水质格局与人为压力关联

IF 2 4区环境科学与生态学

Wetlands Pub Date : 2023-12-01 DOI: 10.1007/s13157-023-01754-8

Anett S. Trebitz, Alan T. Herlihy

{"title":"Wetland water quality patterns and anthropogenic pressure associations across the continental USA","authors":"Anett S. Trebitz, Alan T. Herlihy","doi":"10.1007/s13157-023-01754-8","DOIUrl":"https://doi.org/10.1007/s13157-023-01754-8","url":null,"abstract":"Anthropogenic impacts on lake and stream water quality are well established but have been much less studied in wetlands. Here we use data from the 2016 National Wetland Condition Assessment to characterize water quality and its relationship to anthropogenic pressure for inland wetlands across the conterminous USA. Water samples obtained from 525 inland wetlands spanned pH from < 4 to > 9 and 3 to 5 orders of magnitude in ionic strength (chloride, sulfate, conductivity), nutrients (total N and P), turbidity, planktonic chlorophyll, and dissolved organic carbon (DOC). Anthropogenic pressure levels were evaluated at two spatial scales – an adjacent scale scored from field checklists, and a catchment scale indicated by percent agricultural plus urban landcover. Pressure at the two spatial scales were uncorrelated and varied considerably across regions and wetland hydrogeomorphic types. Both adjacent- and catchment-scale pressure were associated with elevated ionic-strength metrics; chloride elevation was most evident in road-salt using states, and sulfate was strongly elevated in a few sites with coal mining nearby. Nutrients were elevated in association with catchment-scale pressure but concomitant changes were not seen in planktonic chlorophyll. Acidic pH and high DOC occurred primarily in upper Great Lakes and eastern seaboard sites having low anthropogenic pressure, suggesting natural organic acid sources. Ionic strength and nutrients increased with increasing catchment-scale pressure even in Flats and closed Depression and Lacustrine sites, which indicates connectivity to rather than isolation from upland anthropogenic landuse even for wetlands lacking inflowing streams.","PeriodicalId":23640,"journal":{"name":"Wetlands","volume":"15 2","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138524636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thirty-five-year timber harvesting disturbance effects on composition and biomass of tupelo-cypress (Nyssa-Taxodium) forested wetlands, southwest Alabama, USA 35年采伐干扰对美国阿拉巴马州西南部双柏林湿地组成和生物量的影响

IF 2 4区环境科学与生态学

Wetlands Pub Date : 2023-11-29 DOI: 10.1007/s13157-023-01753-9

Cora Every, W. Michael Aust, David R. Carter, T. Adam Coates, Erik B. Schilling

{"title":"Thirty-five-year timber harvesting disturbance effects on composition and biomass of tupelo-cypress (Nyssa-Taxodium) forested wetlands, southwest Alabama, USA","authors":"Cora Every, W. Michael Aust, David R. Carter, T. Adam Coates, Erik B. Schilling","doi":"10.1007/s13157-023-01753-9","DOIUrl":"https://doi.org/10.1007/s13157-023-01753-9","url":null,"abstract":"Thirty-five years post-harvest, effects of harvest disturbances upon tree composition and aboveground biomass were evaluated in a water-tupelo (Nyssa aquatica)- baldcypress (Taxodium distichum) bottomland. The forested wetland, along the Tensaw River, is within the Mobile-Tensaw River Delta in southwest Alabama. Nine replications of four disturbances were evaluated: no harvest reference (REF), clearcutting with helicopter removal (HELI), HELI combined with skidder extraction simulation (SKID), and HELI combined with broadcast herbicide application (glyphosate) to sprouts and seedlings for two years (GLYPH). Thirty-five years post-treatment, species, diameter at breast height (DBH; 1.37 m or above swell) and tree height were measured within treatments and converted to aboveground dry weight biomass. Clip plots were installed for herbaceous and woody stems < 1.37 m. Density and biomass results indicate HELI and SKID are on a trajectory to produce species, densities and biomass similar to REF. GLYPH coppice and seedlings were removed, so GLYPH regenerated from seedbanks and flood disseminated seed. GLYPH has transitioned from an herbaceous freshwater marsh to an open woodland/savanna community. GLYPH exemplifies advantages of coppice for rapid tree regeneration and growth on sites with long hydroperiods. This research demonstrates the capacity for long-term recovery of forested wetland ecosystems following harvest where multiple site/stand factors favored recovery. Adequate stocking of flood tolerant species capable of stump sprouting favored survival of original species. Floods provided annual sediment deposits to offset rutting. Compaction was additionally ameliorated by shrink-swell clays. Finally, nearby forests provided seed sources for areas. Collectively, these factors favored rapid recovery from disturbances.","PeriodicalId":23640,"journal":{"name":"Wetlands","volume":"52 3","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138524630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Changes in Soil Organic Carbon Content Under Different Inundation Gradients in Peat Bogs on the China's Qinghai-Tibet Plateau 不同淹没梯度下青藏高原泥炭沼泽土壤有机碳含量变化

IF 2 4区环境科学与生态学

Wetlands Pub Date : 2023-11-24 DOI: 10.1007/s13157-023-01755-7

Peixian Zhang, Chengzhang Zhao, Chenglu Huang, Geyang Li, Xianshi Wu, Suhong Wang, Dingyue Liu

{"title":"Changes in Soil Organic Carbon Content Under Different Inundation Gradients in Peat Bogs on the China's Qinghai-Tibet Plateau","authors":"Peixian Zhang, Chengzhang Zhao, Chenglu Huang, Geyang Li, Xianshi Wu, Suhong Wang, Dingyue Liu","doi":"10.1007/s13157-023-01755-7","DOIUrl":"https://doi.org/10.1007/s13157-023-01755-7","url":null,"abstract":"The partitioning patterns and retention turnover of soil organic carbon (SOC) in peat bogs are closely related to vegetation, hydrology and soil factors. Research on SOC partitioning patterns in peat bogs in alpine regions in relation to vegetation and soil factors can contribute to the understanding of carbon sequestration mechanisms in peat bogs. In this paper, the Gahai Wetland of international importance on the Qinghai-Tibet Plateau was selected as the experimental site. Three inundation gradient sample plots, SI (heavily inundated zone), SII (moderately inundated zone) and SIII (lightly inundated zone), were established along the vertical shoreline of the lake as the starting point to study the distribution characteristics of the SOC content of peat bogs at different profile depths. The results showed that, horizontally, the SOC content in the three inundation gradients were as follows: SI > SII > SIII, vertically, the SOC content was the highest in the surface layer and showed a decreasing trend from the surface layer to the deep layer with increasing soil depth. All soil factors except bulk density and pH showed a decreasing trend and were significantly different (P < 0.05). The results of the path analysis showed that the effect on SOC content was in the order of soil water content > alkaline nitrogen > total nitrogen > bulk weight, indicating that these four soil factors were the dominant factors affecting the variation in SOC content, their combined effect also played a major role in regulating the SOC content (P < 0.01).","PeriodicalId":23640,"journal":{"name":"Wetlands","volume":"12 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138524644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessing the Impacts of Wetlands on Discharge and Nutrient Loading: Insights from Restoring Past Wetlands with GIS-Based Analysis and Modeling 评估湿地对排放和养分负荷的影响:基于gis的湿地恢复分析和建模的启示

IF 2 4区环境科学与生态学

Wetlands Pub Date : 2023-11-22 DOI: 10.1007/s13157-023-01752-w

Mosammat Mustari Khanaum, Tiansong Qi, Kyle D. Boutin, Marinus L. Otte, Zhulu Lin, Xuefeng Chu

{"title":"Assessing the Impacts of Wetlands on Discharge and Nutrient Loading: Insights from Restoring Past Wetlands with GIS-Based Analysis and Modeling","authors":"Mosammat Mustari Khanaum, Tiansong Qi, Kyle D. Boutin, Marinus L. Otte, Zhulu Lin, Xuefeng Chu","doi":"10.1007/s13157-023-01752-w","DOIUrl":"https://doi.org/10.1007/s13157-023-01752-w","url":null,"abstract":"Wetlands play an essential role in overland flow generation by retaining water and providing an environment for the hydrogeochemical functions of a watershed. Few studies have addressed the restoration of past wetlands using wetland-corrected land-use land-cover (LULC) datasets. We evaluated the impacts of wetlands on hydrology and nutrient (nitrogen) loading by comparing Present, Past, and Restored scenarios. A GIS-based data processing procedure was proposed for generating a wetland-corrected proxy LULC raster to mimic the past wetland distribution. This was subsequently incorporated in the Soil and Water Assessment Tool (SWAT) to simulate discharge and nitrogen loading. In addition, two models, with and without using the proxy LULC dataset, were developed to examine the impacts of the proxy LULC on the model performance. The effect of hydroclimatic variations was also assessed by comparing the simulated peak flows and nutrient loads in dry and wet years. The results demonstrated the necessity of using the wetland-corrected proxy LULC data in the water quantity and quality modeling, especially for wet years. Our modeling approach and wetland-oriented LULC correction procedure can be applied to other wetland-dominated watersheds to improve hydrologic and water quality modeling.","PeriodicalId":23640,"journal":{"name":"Wetlands","volume":"38 5 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138524643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Potential Impacts of Sediment Deposition on Nutrient Variation in Typical Decaying Litters (Cyperus malaccensis) in Coastal Marsh of the Min River Estuary, Southeast China 闽江口滨海湿地典型腐落物(沙柏)养分变化的潜在影响

4区环境科学与生态学

Wetlands Pub Date : 2023-11-14 DOI: 10.1007/s13157-023-01749-5

Zhigao Sun, Jie Wang, Bingbing Chen, Xingyun Hu, Xinhua Li

引用次数: 0

A Landscape-Scale Comparison of Wetlands Associated with Surface Coal Extraction and Naturally-Occurring Wetlands in the Central Appalachian Mountains, USA 美国阿巴拉契亚山脉中部地表采煤湿地与自然湿地景观尺度的比较

4区环境科学与生态学

Wetlands Pub Date : 2023-11-07 DOI: 10.1007/s13157-023-01750-y

David C. Goodman, Walter H. Smith

引用次数: 0

Climate Determines Marsh Ecological Asset in Zoige Pastoral Area over the Past 40 Years 气候对若尔盖牧区近40年沼泽生态资产的影响