Wetlands最新文献_第4页

Extracellular Enzyme Activity and Stoichiometry Across Vegetated and Non-Vegetated Coastal Ecosystems 有植被和无植被沿海生态系统的胞外酶活性和化学计量法

IF 2 4区环境科学与生态学

Wetlands Pub Date : 2024-06-03 DOI: 10.1007/s13157-024-01824-5

Mengjie Wei, Carolyn J. Lundquist, Luitgard Schwendenmann

{"title":"Extracellular Enzyme Activity and Stoichiometry Across Vegetated and Non-Vegetated Coastal Ecosystems","authors":"Mengjie Wei, Carolyn J. Lundquist, Luitgard Schwendenmann","doi":"10.1007/s13157-024-01824-5","DOIUrl":"https://doi.org/10.1007/s13157-024-01824-5","url":null,"abstract":"The conversion of organic matter by extracellular enzymes can reveal important insights into carbon and nutrient cycling. The activity and stoichiometry of hydrolytic extracellular enzymes were investigated to assess the effects of vegetation cover and sediment characteristics on microbial-enzyme-mediated decomposition in coastal ecosystems. Extracellular enzyme activity (EEA) was quantified across transects extending from mangrove to tidal flat habitats in two New Zealand coastal ecosystems that differ in mud content (sandy: Hobson Bay, muddy: Snells Beach). We determined the activity of five key hydrolyzing enzymes: β-glucosidase (hydrolyzes cellulose to glucose); β-N-acetylglucosaminidase (catalyzes the terminal reaction in chitin degradation); alkaline phosphatase (releases soluble inorganic phosphate groups from organophosphates); β-D-cellobiohydrolase (hydrolyzes cellulose to generate cellobiose); and β-xylosidase (catalyzes hemicellulose). All enzymes involved in C acquisition and in N and P cycling had higher activity at the muddy site. No habitat differences in EEA were observed at the sandy site, whereas EEA was lower in the non-vegetated habitats for some enzymes at the muddy site. Models of microbial metabolic limitations highlighted that most habitats at both muddy and sandy sites were predominately C and P limited. The EEA in these coastal wetlands was generally lower than has been reported for other terrestrial, freshwater, and estuarine ecosystems, with values often one to two orders of magnitude lower than other wetland studies. These results can be used to advance our understanding of the biogeochemical processes underpinning the response of coastal ecosystems to land-derived nutrient and sediment inputs.","PeriodicalId":23640,"journal":{"name":"Wetlands","volume":"104 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141253530","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

Do Fallow Field Biotopes Function as Habitats for Aquatic Insects Similar to Rice Paddy Fields and Irrigation Ponds? 休耕田生物群落是否与水稻田和灌溉池塘类似，具有水生昆虫栖息地的功能？

IF 2 4区环境科学与生态学

Wetlands Pub Date : 2024-06-03 DOI: 10.1007/s13157-024-01823-6

Reiya Watanabe, Sho Kubo, Taichi Fukuoka, Shinji Takahashi, Kazukiyo Kobayashi, Shin-ya Ohba

{"title":"Do Fallow Field Biotopes Function as Habitats for Aquatic Insects Similar to Rice Paddy Fields and Irrigation Ponds?","authors":"Reiya Watanabe, Sho Kubo, Taichi Fukuoka, Shinji Takahashi, Kazukiyo Kobayashi, Shin-ya Ohba","doi":"10.1007/s13157-024-01823-6","DOIUrl":"https://doi.org/10.1007/s13157-024-01823-6","url":null,"abstract":"In Japan, abandonment of rice fields has rapidly increased, resulting in biodiversity loss. Fallow field biotopes are attractive measures for compensating wetland species habitats in paddy environments. However, effective management practices of fallow field biotopes for biodiversity conservation are largely unknown, especially for lentic aquatic insects (Odonata, Hemiptera, and Coleoptera). We conducted field experiments in abandoned rice terraces in western Hyogo Prefecture, central Japan. We plowed and flooded nine abandoned paddy fields and divided them into three types: paddy fields, biotopes, and mixed fields. We also surveyed irrigation ponds. To assess the function of the four habitat types, we examined how species richness, abundance, and community composition of aquatic insects differed among habitat types. Aquatic insect assemblages in biotopes differed from paddy fields and ponds and resembled that in a mixed field. The effects of environmental factors on the abundance and species richness of aquatic insects differ according to their order or life stages. The abundance of aquatic insects increased with surface area. The abundance of Odonata nymphs increased with water depth, whereas that of Hemiptera nymphs and Coleoptera larvae decreased. The abundance of Odonata nymphs and Hemiptera adults increased with increasing vegetation cover, whereas the species richness of aquatic insects decreased. Thus, it is important to prevent high vegetation cover by plowing and create a water depth gradient for creating habitats for multiple taxa. We suggest that creating or maintaining mosaic habitats, including paddy fields, biotopes, and ponds could enhance aquatic insect diversity in abandoned rice terraces.","PeriodicalId":23640,"journal":{"name":"Wetlands","volume":"18 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141253464","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

Climate and soil: Key Drivers of Plant Traits and Community Functional Differences in the Lakeshore Wetlands of Northern China 气候与土壤华北湖滨湿地植物性状和群落功能差异的关键驱动因素

IF 2 4区环境科学与生态学

Wetlands Pub Date : 2024-06-03 DOI: 10.1007/s13157-024-01828-1

Rui Zhang, Zhichao Xu, Huamin Liu, Hongbo Yu, Feng Niu, Haitao Fang, Linqian Ma, Yunhao Wen, Lu Wen, Yi Zhuo, Lixin Wang

{"title":"Climate and soil: Key Drivers of Plant Traits and Community Functional Differences in the Lakeshore Wetlands of Northern China","authors":"Rui Zhang, Zhichao Xu, Huamin Liu, Hongbo Yu, Feng Niu, Haitao Fang, Linqian Ma, Yunhao Wen, Lu Wen, Yi Zhuo, Lixin Wang","doi":"10.1007/s13157-024-01828-1","DOIUrl":"https://doi.org/10.1007/s13157-024-01828-1","url":null,"abstract":"Wetlands, integral constituents of natural ecosystems, play a pivotal role in bolstering biodiversity and providing habitats. Diminished lake expanses, degradation of wetlands, and pollution in arid and semi-arid regions present threats to the structural and functional aspects of wetland ecosystems. This study employed plant functional traits to assess changes in the functional composition of plant communities in lakeshore wetland ecosystems in the arid and semi-arid regions of the Mongolian Plateau in northern China, as well as to explore the effects of climatic and soil heterogeneity gradients on wetland ecosystem function. Our findings reveal that all trait metrics can be categorized into three primary trait groups: plant nutrient traits, plant structural traits, and plant energy acquisition traits. Environmental heterogeneity drove variations in plant functional traits across different spatial scales. Soil and climatic factors combine to explain variation in wetland plant community characteristics and functional diversity, with soil moisture content as a key factor influencing functional diversity. In some lake lakeshore region habitats that were seasonally waterlogged for an extended period, seasonal precipitation might impact plant structural traits. The functioning of the ecosystem is predominantly shaped by community structural traits, functional diversity, and soil factors. This study extensively examines the interplay among the functional traits, functional structure, and ecosystem function within lakeshore plant communities. This exploration holds paramount significance in establishing a scientific foundation for the restoration and reconstruction of wetland ecosystem vegetation in the lakeshore regions.","PeriodicalId":23640,"journal":{"name":"Wetlands","volume":"17 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141253370","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

Evaluation of Soil Microbial and Enzymatic Activity in Ecosystems in a Coastal Region of Brazil 评估巴西沿海地区生态系统中的土壤微生物和酶活性

IF 2 4区环境科学与生态学

Wetlands Pub Date : 2024-05-29 DOI: 10.1007/s13157-024-01822-7

Breno Pupin, Drauzio Eduardo Naretto Rangel, Ely Nahas

{"title":"Evaluation of Soil Microbial and Enzymatic Activity in Ecosystems in a Coastal Region of Brazil","authors":"Breno Pupin, Drauzio Eduardo Naretto Rangel, Ely Nahas","doi":"10.1007/s13157-024-01822-7","DOIUrl":"https://doi.org/10.1007/s13157-024-01822-7","url":null,"abstract":"The enormous soil carbon pool stored by mangroves depends upon microbial respiratory activities and enzymes associated with carbon breakdown in soils. Our hypothesis is that increased microbial activity leads to elevated carbon breakdown. To prove this, we measured microbial respiratory and enzyme activity for nitrogen, phosphorus, and carbon cycle in soil from three coastal ecosystems: mangroves, restinga, and Atlantic forest. The multivariate ordination analysis showed that each treatment had distinct soil microbial activity according to the soil layer and seasons. Our results suggest that the Atlantic forest ecosystem had the highest respiration activity (i.e., CO2-C release), dehydrogenase, phosphatase, protease, and urease activities, while mangroves and sandy coastal plains (called restinga) had lower respiration and enzyme activity. Therefore, soil microbial respiratory activity variation was influenced by soil microbial activity in the most superficial layer in coastal soil ecosystems. The agreement between dehydrogenase activity and CO2-C respiration measurements suggests that microbial activity is an efficient indicator of carbon breakdown. Our findings also indicate that the vegetation type in the different ecosystems contribute to stimulate the soil microbiota increasing both its microbial activity and carbon storage. These issues should be considered for the conservation policies to promote effective protection of vital coastal ecosystems in Brazil. Understanding the coastal ecosystem-induced nutrient shifts in microbial communities is important because they can lead to lagged and multiplicative effects on carbon storage. Taken together, our results illustrate the identification of keystone (organic carbon and microbial activity) as an indicator to offer evidence-providing tools to achieve more ecologically efficient managing practices.<h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>","PeriodicalId":23640,"journal":{"name":"Wetlands","volume":"1 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141188154","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

Efficacy and Costs of Restoring Wetland Breeding Habitat for Imperiled Amphibians in the Southeastern U.S. 为美国东南部濒危两栖动物恢复湿地繁殖栖息地的功效与成本

IF 2 4区环境科学与生态学

Wetlands Pub Date : 2024-05-29 DOI: 10.1007/s13157-024-01821-8

E. Tucker Stonecypher, Linda S. Lee, Scott M. Weir, Elizabeth G. King, Charles E. Davis, Stacey L. Lance

{"title":"Efficacy and Costs of Restoring Wetland Breeding Habitat for Imperiled Amphibians in the Southeastern U.S.","authors":"E. Tucker Stonecypher, Linda S. Lee, Scott M. Weir, Elizabeth G. King, Charles E. Davis, Stacey L. Lance","doi":"10.1007/s13157-024-01821-8","DOIUrl":"https://doi.org/10.1007/s13157-024-01821-8","url":null,"abstract":"Herbaceous isolated wetlands in the North American Southeastern Coastal Plain are important breeding sites for many imperiled amphibians. However, most are degraded from alterations to historic fire disturbance and hydrologic regimes. Without fire, encroaching woody vegetation can transition wetlands to more terrestrial conditions and negatively impact amphibian breeding habitat, yet few studies have experimentally tested the efficacy, cost, or temporal requirement of current methods to restore herbaceous wetland vegetation. Here, we tested the interaction of manipulating wetland canopy and leaf litter/duff to promote herbaceous vegetation within one year (i.e., one breeding season) in degraded herbaceous wetlands in South Carolina. We assessed plant response via herbaceous cover, composition, and species similarity to the wetland seed bank and then related treatment performance to treatment cost. Removing trees combined with burning, disturbing, or removing duff significantly increased herbaceous cover and proportions of wetland plants and graminoids. Removing trees alone did not improve herbaceous cover compared to closed-canopy controls, and manipulating duff alone had limited positive effects on plant cover and composition. The most expensive yet effective treatment was Tree Removal-Duff Removal, while Tree Removal-Duff Disturbance was the most cost-effective. At a minimum, we recommend removing trees and burning to kickstart herbaceous recovery. Promisingly, comparisons of our data with previous seed bank studies from these same wetlands indicate there was limited seed bank attrition during 30 years of woody encroachment. Results from this study should aid practitioners in choosing wetland restoration techniques to better conserve at-risk species in the Southeastern Coastal Plain.","PeriodicalId":23640,"journal":{"name":"Wetlands","volume":"40 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141188163","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

Potentially Toxic Elements Risk Assessment and Source Identification of an At-Risk International Wetland in SW Iran 伊朗西南部一块高风险国际湿地的潜在有毒元素风险评估和来源识别

IF 2 4区环境科学与生态学

Wetlands Pub Date : 2024-05-28 DOI: 10.1007/s13157-024-01817-4

Sarmad Mahdi Kadhum Alghanimi, Atefeh Chamani, Ahmed Najm Almusawi, Kamran Rezaei Tavabe

{"title":"Potentially Toxic Elements Risk Assessment and Source Identification of an At-Risk International Wetland in SW Iran","authors":"Sarmad Mahdi Kadhum Alghanimi, Atefeh Chamani, Ahmed Najm Almusawi, Kamran Rezaei Tavabe","doi":"10.1007/s13157-024-01817-4","DOIUrl":"https://doi.org/10.1007/s13157-024-01817-4","url":null,"abstract":"Choghakhor is a freshwater permanent International Wetland in SW Iran where rapid agricultural and ecotourism development has changed the face of the landscape. In this study, the possible effect of these activities was assessed on the accumulation of potentially toxic elements (PTEs) in the wetland surface sediment. The concentration of PTEs varied considerably by sampling station in the order of Fe > Mn > As > Ni > Cr > Pb > Zn > Cd and exceeded the ISQG limits for Cd (11.46 mg/kg) and As (59.30 mg/kg). The results of pollution indices -Geoaccumulation Index (Igeo), Enrichment Factor (EF), Pollution Load Index (PLI) and Potential Ecological Risk Index (RI)- were spatially investigated using an interpolation technique, showing that the wetland is not contaminated nor severely enriched with Cr, Mn and Zn but is exposed to significantly high Cd and As contamination and enrichment levels across its entire area. Based on PLI, the entire wetland area is heavily polluted. The potential ecological risk of the PTEs was found to be considerably high which is a severe threat to the wetland species and its food web. The primary factors contributing to HM contamination in the wetland were recognized as agricultural land development, inappropriate application of phosphate pesticides and fertilizers, and the overuse of gasoline-powered boats for fishing and tourism activities.","PeriodicalId":23640,"journal":{"name":"Wetlands","volume":"6 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141170271","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

Restoration and Governance Approaches of Mangrove Ecosystems in Africa 非洲红树林生态系统的恢复和治理方法

IF 2 4区环境科学与生态学

Wetlands Pub Date : 2024-05-07 DOI: 10.1007/s13157-024-01805-8

Isaac Arnaud Quenum, Carolle Avocèvou-Ayisso, Rodrigue Idohou, Elie Antoine Padonou, Ghislain comlan Akabassi, Bokon Alexis Akakpo

{"title":"Restoration and Governance Approaches of Mangrove Ecosystems in Africa","authors":"Isaac Arnaud Quenum, Carolle Avocèvou-Ayisso, Rodrigue Idohou, Elie Antoine Padonou, Ghislain comlan Akabassi, Bokon Alexis Akakpo","doi":"10.1007/s13157-024-01805-8","DOIUrl":"https://doi.org/10.1007/s13157-024-01805-8","url":null,"abstract":"The management of mangrove ecosystems faced to serious problem while these ecosystems are among the world’s richest ecosystems and provide a wealth of important services to human well-being. 35% of the areas of mangrove forests has globally been lost in the past two decades and supposed to be reach 60% by 2030. It is urgent to prospect the potential conservation research topics for the better management of mangrove areas. With a view to reducing mangrove degradation rate, this review aims to highlight restoration strategies and governance tenure of mangrove ecosystems in Africa. A total of 101 papers from Africa (31.68%), Asia (46.53%), America (11.85%), Europe (7.10%), and the rest of the world (2.84%) were considered. Indonesia, Thailand and India respectively recorded the top number of publications in Asia whereas Benin and Ghana accounted the higher number in Africa. 71.42% of publications have considered human activities including tree clearance and higher wood used (e.g. salt production activities) as the main mangrove degradation drivers in Africa. 4.80% of papers were found as the highest annual rate of mangrove degradation and less rate was 0.21% obtained in Africa. Many approaches were described for mangrove ecosystems restoration. 61.54% of mangrove governance publications showed that multi-level mangrove governance approach is widely applied. However, many studies suggested that this model of mangrove governance is the source of the resource’s degradation by the lack of a strong regulation. This review could help to set up a good program of mangrove restoration in West Africa.","PeriodicalId":23640,"journal":{"name":"Wetlands","volume":"93 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140886763","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

The Wise-Use Checklist as a Science–Policy Interface– The Interaction of Science and Policy in Taiwanese Wetland Conservation Policy 作为科学与政策接口的智用清单--台湾湿地保护政策中的科学与政策互动

IF 2 4区环境科学与生态学

Wetlands Pub Date : 2024-05-07 DOI: 10.1007/s13157-024-01810-x

Chen-Guang Lee

{"title":"The Wise-Use Checklist as a Science–Policy Interface– The Interaction of Science and Policy in Taiwanese Wetland Conservation Policy","authors":"Chen-Guang Lee","doi":"10.1007/s13157-024-01810-x","DOIUrl":"https://doi.org/10.1007/s13157-024-01810-x","url":null,"abstract":"The ‘Wise-Use Checklist’ was designed to assist people in formulating the ‘Conservation–Utilisation Plans for Wetlands of Importance’ in Taiwanese wetland conservation policy programme. Feedback from the planning teams, however, indicated that the checklist was difficult to use. Therefore, this research employed the perspective of science–policy interface to understand the barriers people were experiencing while implementing the checklist and identify the factors influencing the governance between science and policy in wetland conservation. The study mainly focused on the period from 2013 to 2015, when the wetland conservation policy was transformed into legislation and regulations in Taiwan. Semi-structured interviews were used to understand the thoughts of planners who participated in the formulation of the ‘Conservation–Utilisation Plans for Wetlands of Importance’. The interviews revealed that the main barrier to the planners was the uncertainty produced by perception divergence, technical difficulties, and policy–institutional barriers, rather than the checklist itself. The responses identified tensions and governance issues among the scientists and between the scientists and policymakers with respect to wetland conservation policies. The research yielded two findings in the aspect of the science-policy interfaces themselves, and six areas for discussion in the aspect of governance between wetland scientists and policymakers.","PeriodicalId":23640,"journal":{"name":"Wetlands","volume":"16 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140886667","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

Diatom and Bacterial Communities in Saline Habitats (Vojvodina, Serbia) 盐碱地（塞尔维亚伏伊伏丁那省）的硅藻和细菌群落

IF 2 4区环境科学与生态学

Wetlands Pub Date : 2024-05-07 DOI: 10.1007/s13157-024-01809-4

Danijela Vidaković, Ivica Dimkić, Jelena Krizmanić, Tamara Janakiev, Bojan Gavrilović, Miloš Ćirić

{"title":"Diatom and Bacterial Communities in Saline Habitats (Vojvodina, Serbia)","authors":"Danijela Vidaković, Ivica Dimkić, Jelena Krizmanić, Tamara Janakiev, Bojan Gavrilović, Miloš Ćirić","doi":"10.1007/s13157-024-01809-4","DOIUrl":"https://doi.org/10.1007/s13157-024-01809-4","url":null,"abstract":"Current knowledge of the microbiota of soda pans of the Carpathian Basin focuses mainly on diatoms. In studying six soda pans in Vojvodina (Serbia), we aimed to gain deeper insights into the diatom community by using not only traditional microscopic analysis but also high-throughput sequencing of the 18S rRNA gene. In addition, this study aimed to evaluate bacterial communities in these soda pans for the first time using the 16S rRNA gene marker. Although similar numbers of diatom taxa were found using both approaches, a significant discrepancy in species composition was found. The genus Nitzschia was one of the most represented and numerous genera according to the morphological and molecular analyses, but with lower diversity according to the molecular data, with the sequences mostly unassigned. Another major discrepancy was noticed with taxon Halamphora veneta, the results of metabarcoding showed high abundance in almost all soda pans, while microscopy detected it as very low. Diverse communities of aerobic and anaerobic bacteria were detected in the studied soda pans, such as Proteobacteria, Bacteroidota, Actinobacteria, Bacillaceae, and Peptoclostridium. According to current knowledge, harsh environmental conditions and habitat homogeneity regulate diatom and bacteria community composition and enable the survival of taxa with predominantly high ecophysiological plasticity. Finally, uncovering the structure of the microbial community as the first phase in developing an efficient tool to assess the ecological status of these fragile ecosystems is an essential step towards their conservation.","PeriodicalId":23640,"journal":{"name":"Wetlands","volume":"1 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140886747","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

Delineation and Classification of Wetlands in the Northern Jarrah Forest, Western Australia Using Remote Sensing and Machine Learning 利用遥感和机器学习对西澳大利亚北贾拉拉森林的湿地进行划分和分类

IF 2 4区环境科学与生态学

Wetlands Pub Date : 2024-05-01 DOI: 10.1007/s13157-024-01806-7

Adam Turnbull, Mariela Soto-Berelov, Michael Coote

{"title":"Delineation and Classification of Wetlands in the Northern Jarrah Forest, Western Australia Using Remote Sensing and Machine Learning","authors":"Adam Turnbull, Mariela Soto-Berelov, Michael Coote","doi":"10.1007/s13157-024-01806-7","DOIUrl":"https://doi.org/10.1007/s13157-024-01806-7","url":null,"abstract":"Wetlands are under increasing pressure from threatening processes. Efforts to protect and monitor wetlands are hampered without datasets capturing the extent, type, and condition. The purpose of this study is to map the distribution of wetland type, vegetation type and vegetation condition for wetlands in the Northern Jarrah Forest region, Western Australia. A random forest algorithm implemented via Google Earth Engine (GEE) was used to classify wetlands and vegetation condition using satellite imagery, topographic indices, and soil mapping. Wetland type was classified using a hierarchical approach incorporating increasing level of detail. Wetland type was mapped as system type from the Interim Australian National Aquatic Ecosystem (ANAE) Classification framework and at hydroperiod level, with overall accuracy of 83% and 82% respectively. Vegetation type was mapped with an accuracy of 78.3%. Mapping of vegetation condition using the Vegetation Assets, States and Transitions (VAST) framework achieved an overall accuracy of 79.6%. Results show that wetlands occur in greater concentration as narrow seasonally waterlogged sites in the west, more sparsely and seasonally inundated sites in the northeast, and as broad seasonally waterlogged sites in the southeast of the study area. Wetland degradation determined through vegetation condition is concentrated in the east, and highest in seasonally waterlogged wetlands. Overall, the wetlands mapping framework implemented in this study can be used by land managers and other interested parties seeking to identify threatened and high conservation value wetlands in other areas.","PeriodicalId":23640,"journal":{"name":"Wetlands","volume":"8 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140838171","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