Ecohydrology & Hydrobiology最新文献_第5页

An analysis of rainfall variability and its association with agricultural productivity in the Brantas River Basin, Indonesia: Insights from a 26-year analysis 印度尼西亚布兰塔斯河流域降雨变异性及其与农业生产力的关系分析：来自26年分析的见解

IF 2.2 4区环境科学与生态学 Q2 ECOLOGY

Ecohydrology & Hydrobiology

Pub Date : 2025-12-01 Epub Date: 2025-06-08 DOI: 10.1016/j.ecohyd.2025.100674

Bagus Setiabudi Wiwoho , Paul Dargusch , Ike Sari Astuti

Rainfall variability presents an increasing challenge to agricultural sustainability in tropical regions, particularly in topographically complex basins such as the Brantas River Basin (BRB) in Indonesia. This study aimed to (1) characterize long-term rainfall patterns, (2) delineate homogeneous rainfall regions, and (3) assess the relationships between rainfall parameters and the yields of rice, maize, and vegetables. Using daily rainfall data from 193 stations (1996–2020), we derived 22 annual rainfall parameters encompassing magnitude, timing, frequency, variability, and trends. Principal Component Analysis (PCA) revealed that the first seven components explained 83 % of the total variance, with rainfall magnitude and frequency emerging as dominant factors. Hierarchical Clustering on Principal Components (HCPC) identified four distinct rainfall clusters across the BRB. Correlation analysis indicated that rice yields were positively associated with moderate rainfall and the number of rainy days (r > 0.70 in some areas), whereas maize and vegetable yields exhibited mixed responses to rainfall variability and extremes. In addition to commonly used metrics such as total annual rainfall, more specific indicators—such as the number of rainy days, wet spells, and dry spells—also contributed to yield variation. The spatial heterogeneity of correlation patterns underscores the geographic variability in long-term rainfall–yield relationships. These findings highlight the need for region-specific adaptation strategies to address the diverse climate risks faced by smallholder farming systems in the BRB.

降雨变率对热带地区的农业可持续性构成了越来越大的挑战，特别是在地形复杂的盆地，如印度尼西亚的布兰塔斯河流域（BRB）。本研究旨在(1)描述长期降雨模式；(2)划定均匀降雨区域；(3)评估降雨参数与水稻、玉米和蔬菜产量之间的关系。利用1996-2020年193个站点的日降雨量数据，我们得到了22个年降雨量参数，包括量级、时间、频率、变率和趋势。主成分分析（PCA）表明，前7个分量解释了总方差的83%，降雨量和频率是主导因子。主成分层次聚类（HCPC）在BRB上识别出四个不同的降雨簇。相关分析表明，水稻产量与降雨量和降雨日数呈正相关（部分地区r >； 0.70），而玉米和蔬菜产量对降雨量变率和极端天气的响应则是混合的。除了常用的指标（如年总降雨量）外，更具体的指标（如阴雨天、湿润期和干旱期的数量）也对产量变化有影响。相关模式的空间异质性强调了长期降雨-产量关系的地理变异性。这些发现突出表明，需要制定针对特定区域的适应战略，以应对BRB小农农业系统面临的各种气候风险。

{"title":"An analysis of rainfall variability and its association with agricultural productivity in the Brantas River Basin, Indonesia: Insights from a 26-year analysis","authors":"Bagus Setiabudi Wiwoho , Paul Dargusch , Ike Sari Astuti","doi":"10.1016/j.ecohyd.2025.100674","DOIUrl":"10.1016/j.ecohyd.2025.100674","url":null,"abstract":"<div><div><span>Rainfall variability presents an increasing challenge to agricultural sustainability in tropical regions, particularly in topographically complex basins such as the Brantas River Basin (BRB) in Indonesia. This study aimed to (1) characterize long-term rainfall patterns, (2) delineate homogeneous rainfall regions, and (3) assess the relationships between rainfall parameters and the yields of rice, maize, and vegetables. Using daily rainfall data from 193 stations (1996–2020), we derived 22 annual rainfall parameters encompassing magnitude, timing, frequency, variability, and trends. Principal Component Analysis (PCA) revealed that the first seven components explained 83 % of the total variance, with rainfall magnitude and frequency emerging as dominant factors. Hierarchical Clustering on Principal Components (HCPC) identified four distinct rainfall clusters across the BRB. Correlation analysis indicated that rice yields were positively associated with moderate rainfall and the number of rainy days (</span><em>r</em><span><span> > 0.70 in some areas), whereas maize and vegetable yields exhibited mixed responses to rainfall variability and extremes. In addition to commonly used metrics such as total annual rainfall, more specific indicators—such as the number of rainy days, wet spells, and dry spells—also contributed to yield variation. The spatial heterogeneity of correlation patterns underscores the geographic variability in long-term rainfall–yield relationships. These findings highlight the need for region-specific adaptation strategies to address the diverse climate risks faced by smallholder </span>farming systems in the BRB.</span></div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100674"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145738784","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

Environmental degradation of Townsville coast and coastal waters of the Great Barrier Reef, Australia – findings and solutions 汤斯维尔海岸和大堡礁沿岸水域的环境退化-发现和解决办法

IF 2.2 4区环境科学与生态学 Q2 ECOLOGY

Ecohydrology & Hydrobiology

Pub Date : 2025-12-01 Epub Date: 2025-05-30 DOI: 10.1016/j.ecohyd.2025.100672

Eric Wolanski, Chris Hopper

The degradation of the Townsville coast and coastal waters of the Great Barrier Reef Marine Park ecosystem is severe. It involves, among several other symptoms, a large dam that traps riverine sand, land reclamation, extensive dredging, dumping of 400,000 m³/year of unconsolidated mud in coastal water, severe coastal erosion, sandy beaches turning muddy, healthy coral reefs turning to coral rubble, the decrease of water clarity of waters by 87 % since the 1960s, and a decrease of 80 % of the dugong population from 2016 to 2022. It is shown that this degradation is largely due to human activities on land and at sea. Climate change occurred later and is likely to impact mud and sand transport in the future. The degradation is still increasing because the management decisions suffer from the shifting baseline syndrome. For sustainable management, a holistic, ecohydrology-based approach is needed. It must involve all stakeholders and integrates hydrotechnical, biophysical and social approaches over the whole watershed including Magnetic Island, and all coastal waters. Several such solutions are proposed. These solutions may be applicable to all Queensland ports facing the Great Barrier Reef, as they all suffer from similar issues to various degrees.

汤斯维尔海岸和大堡礁海洋公园的沿海水域生态系统严重退化。除了其他几个症状外，它还包括一个大型水坝，它捕获了河沙，土地开垦，大规模疏浚，在沿海水域倾倒40万立方米/年的未固结泥浆，严重的海岸侵蚀，沙滩变成泥泞，健康的珊瑚礁变成珊瑚碎石，自20世纪60年代以来，水域的清晰度下降了87%，从2016年到2022年，儒艮数量减少了80%。研究表明，这种退化主要是人类在陆地和海洋上的活动造成的。气候变化发生得较晚，可能会影响未来的泥沙运输。由于管理决策受到基线转移综合症的影响，这种退化仍在增加。为了实现可持续管理，需要一种全面的、基于生态水文的方法。它必须涉及所有利益相关者，并将整个流域（包括磁岛和所有沿海水域）的水文技术、生物物理和社会方法结合起来。提出了几种这样的解决办法。这些解决方案可能适用于所有面对大堡礁的昆士兰港口，因为它们都不同程度地面临着类似的问题。

{"title":"Environmental degradation of Townsville coast and coastal waters of the Great Barrier Reef, Australia – findings and solutions","authors":"Eric Wolanski, Chris Hopper","doi":"10.1016/j.ecohyd.2025.100672","DOIUrl":"10.1016/j.ecohyd.2025.100672","url":null,"abstract":"<div><div>The degradation of the Townsville coast and coastal waters of the Great Barrier Reef Marine Park ecosystem is severe. It involves, among several other symptoms, a large dam that traps riverine sand, land reclamation, extensive dredging, dumping of 400,000 m<sup>3</sup>/year of unconsolidated mud in coastal water, severe coastal erosion, sandy beaches turning muddy, healthy coral reefs turning to coral rubble, the decrease of water clarity of waters by 87 % since the 1960s, and a decrease of 80 % of the dugong population from 2016 to 2022. It is shown that this degradation is largely due to human activities on land and at sea. Climate change occurred later and is likely to impact mud and sand transport in the future. The degradation is still increasing because the management decisions suffer from the shifting baseline syndrome. For sustainable management, a holistic, ecohydrology-based approach is needed. It must involve all stakeholders and integrates hydrotechnical, biophysical and social approaches over the whole watershed including Magnetic Island, and all coastal waters. Several such solutions are proposed. These solutions may be applicable to all Queensland ports facing the Great Barrier Reef, as they all suffer from similar issues to various degrees.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100672"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145738780","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

Influence of soil on the biogeochemistry of high mountain streams 土壤对高山溪流生物地球化学的影响

IF 2.2 4区环境科学与生态学 Q2 ECOLOGY

Ecohydrology & Hydrobiology

Pub Date : 2025-12-01 Epub Date: 2025-10-15 DOI: 10.1016/j.ecohyd.2025.100702

Daniel Montagud, Lluís Camarero

This study advances understanding of the hydrological and biogeochemical dynamics of poorly studied high-mountain catchments in the Pyrenees. The objective was to assess the chemical influence of subsurface compartments on surface runoff, with emphasis on the role of soil cover. Two high-mountain catchments were instrumented with autosamplers: one with extensive soil cover and another largely lacking soil. Results indicate that soil presence influences in: (1) increases concentrations of chloride and weathering-derived solutes, (2) while reducing nitrogen and sulfur fluxes to runoff; (3) the soil’s ion exchange capacity and precipitation-driven leaching enhance chloride concentrations in surface flow; (4) furthermore, heterotrophic microbial respiration elevates CO₂ levels in soil, increasing solution acidity and promoting weathering. In parallel, heterotrophic microbiota utilize nitrate and sulfate as alternative electron acceptors for organic matter decomposition in anaerobic zones, thereby lowering nitrogen and sulfur concentrations in streamflow. These findings contribute to improved understanding and prediction of biogeochemical pathways and solute transport in high-mountain areas.

这项研究促进了对比利牛斯山脉高山流域水文和生物地球化学动力学的理解。目的是评估地下隔间对地表径流的化学影响，重点是土壤覆盖的作用。两个高山集水区采用自动采样仪：一个有广泛的土壤覆盖，另一个基本缺乏土壤。结果表明，土壤存在的影响包括：(1)增加氯化物和风化溶质的浓度；(2)减少径流的氮和硫通量；(3)土壤的离子交换能力和降水驱动淋滤增强了地表水流中的氯离子浓度；(4)此外，异养微生物呼吸提高了土壤中的CO 2水平，增加了溶液的酸度，促进了风化。与此同时，异养微生物群利用硝酸盐和硫酸盐作为厌氧区有机物分解的替代电子受体，从而降低水流中的氮和硫浓度。这些发现有助于提高对高山区生物地球化学途径和溶质运移的认识和预测。

{"title":"Influence of soil on the biogeochemistry of high mountain streams","authors":"Daniel Montagud, Lluís Camarero","doi":"10.1016/j.ecohyd.2025.100702","DOIUrl":"10.1016/j.ecohyd.2025.100702","url":null,"abstract":"<div><div>This study advances understanding of the hydrological and biogeochemical dynamics of poorly studied high-mountain catchments in the Pyrenees. The objective was to assess the chemical influence of subsurface compartments on surface runoff, with emphasis on the role of soil cover. Two high-mountain catchments were instrumented with autosamplers: one with extensive soil cover and another largely lacking soil. Results indicate that soil presence influences in: (1) increases concentrations of chloride and weathering-derived solutes, (2) while reducing nitrogen and sulfur fluxes to runoff; (3) the soil’s ion exchange capacity and precipitation-driven leaching enhance chloride concentrations in surface flow; (4) furthermore, heterotrophic microbial respiration elevates CO₂ levels in soil, increasing solution acidity and promoting weathering. In parallel, heterotrophic microbiota utilize nitrate and sulfate as alternative electron acceptors for organic matter decomposition in anaerobic zones, thereby lowering nitrogen and sulfur concentrations in streamflow. These findings contribute to improved understanding and prediction of biogeochemical pathways and solute transport in high-mountain areas.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100702"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739221","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

Drivers of seston caloric content in lowland streams and its link with higher trophic levels during drought 干旱期间低地溪流季热量含量的驱动因素及其与高营养水平的联系

IF 2.2 4区环境科学与生态学 Q2 ECOLOGY

Ecohydrology & Hydrobiology

Pub Date : 2025-12-01 Epub Date: 2025-11-29 DOI: 10.1016/j.ecohyd.2025.100709

María Florencia Gutierrez , Antonella Viganó , Diego Frau , Luis A. Espínola , Elie Abrial , Andrea S. Rossi

The relationship between seston caloric content, phytoplankton, zooplankton and fish biomass in lowland agricultural streams, was studied during a drought year, in which extreme low precipitations events characterized the climatic condition. We hypothesized that seston caloric content vary seasonally, and is regulated by phytoplankton biomass. In addition, we postulated that the positive, bottom-up energy link between seston, primary and secondary consumers is decoupled since the latter are mostly supported by non- sestonic food components. We found that seston caloric content has high seasonal variability driven by soluble phosphorous concentrations, and Bacillariophyceae and Cyanophyceae biomasses. Zooplankton biomass, represented by omnivore-detritivores species, was high in some periods, providing a contribution between 71 and 57 % to the seston, but it had negligible relation (e.g. grazing effect) with phytoplankton biomass. The energy content of seston has no connection with fish biomass although the zooplankton fraction contributed between 10 and 30 % of the smallest size (< 30 mm) fishes’ diet in summer. In conclusion, we showed that sestonic components largely depend on nutrient inputs, and their variability provides valuable information about ecosystem processes. Considering that the studied streams are directly influenced by runoff water from agriculture, with substantial inputs of nutrients and pesticides, monitoring the seston compartment could assist as an overall indicator of water quality and ecological processes.

在极端低降水的干旱气候条件下，研究了低地农业河流的季热量、浮游植物、浮游动物和鱼类生物量之间的关系。我们假设季热含量随季节变化，并受浮游植物生物量的调节。此外，我们假设，由于后者主要由非结构性食品成分提供支持，因此，seston，初级和次级消费者之间自下而上的积极能量联系是解耦的。我们发现，受可溶性磷浓度、硅藻和蓝藻生物量的影响，海藻热量含量具有较高的季节性变化。以杂食-腐食动物为代表的浮游动物生物量在某些时期较高，对群落生物量的贡献在71% ~ 57%之间，但与浮游植物生物量的关系（如放牧效应）可以忽略不计。夏季浮游动物组分对最小尺寸（30 mm）鱼类日粮的贡献在10% ~ 30%之间，但节气的能量含量与鱼类生物量无关。综上所述，我们发现季节组分在很大程度上依赖于养分输入，它们的变异性为生态系统过程提供了有价值的信息。考虑到所研究的河流直接受到农业径流的影响，其中有大量的营养物质和农药投入，监测林隔区可以作为水质和生态过程的总体指标。

{"title":"Drivers of seston caloric content in lowland streams and its link with higher trophic levels during drought","authors":"María Florencia Gutierrez , Antonella Viganó , Diego Frau , Luis A. Espínola , Elie Abrial , Andrea S. Rossi","doi":"10.1016/j.ecohyd.2025.100709","DOIUrl":"10.1016/j.ecohyd.2025.100709","url":null,"abstract":"<div><div>The relationship between seston caloric content, phytoplankton, zooplankton and fish biomass in lowland agricultural streams, was studied during a drought year, in which extreme low precipitations events characterized the climatic condition. We hypothesized that seston caloric content vary seasonally, and is regulated by phytoplankton biomass. In addition, we postulated that the positive, bottom-up energy link between seston, primary and secondary consumers is decoupled since the latter are mostly supported by non- sestonic food components. We found that seston caloric content has high seasonal variability driven by soluble phosphorous concentrations, and Bacillariophyceae and Cyanophyceae biomasses. Zooplankton biomass, represented by omnivore-detritivores species, was high in some periods, providing a contribution between 71 and 57 % to the seston, but it had negligible relation (e.g. grazing effect) with phytoplankton biomass. The energy content of seston has no connection with fish biomass although the zooplankton fraction contributed between 10 and 30 % of the smallest size (< 30 mm) fishes’ diet in summer. In conclusion, we showed that sestonic components largely depend on nutrient inputs, and their variability provides valuable information about ecosystem processes. Considering that the studied streams are directly influenced by runoff water from agriculture, with substantial inputs of nutrients and pesticides, monitoring the seston compartment could assist as an overall indicator of water quality and ecological processes.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100709"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739210","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

Evaluating alkalinity as a key variable for phytoplankton-based lake typology: A case study of 70 lentic systems in Türkiye 碱度作为基于浮游植物的湖泊类型的关键变量评价：以<s:1> rkiye 70个湖泊系统为例

IF 2.2 4区环境科学与生态学 Q2 ECOLOGY

Ecohydrology & Hydrobiology

Pub Date : 2025-12-01 Epub Date: 2025-06-18 DOI: 10.1016/j.ecohyd.2025.100676

Tuğba Ongun-Sevіndіk , Tolga Çetіn , Uğur Güzel , Ayşe Gül Tekbaba

In the study of 70 lentic systems across Türkiye, the influence of alkalinity on phytoplankton assemblages was evaluated in five alkalinity groups (I: 〈 140, II: 140–200, III: 200–300, IV: 300–600, V: 〉 600 mg l^-1 CaCO₃) as a proxy for geological variation. The analysis revealed that species composition varied with increasing alkalinity, with certain species favoring higher alkalinity levels and exhibiting higher alkalinity optima. Species richness (alpha diversity) was highest in Group I, while total species richness (gamma diversity) exhibited a consistent decline as alkalinity increased, from Group I to Group V. In contrast, the highest phytoplankton biovolume was observed in Group V_. In addition to alkalinity, other environmental factors including electrical conductivity, total nitrogen, total phosphorus, and pH were found to significantly influence the distribution of dominant species, variations in species composition, alpha diversity, and phytoplankton biovolume across different alkalinity groups. The PHYTO-TR index demonstrated that groups I, II, and III exhibited a higher proportion of high and good ecological quality systems compared to those in higher alkalinity ranges, making the index more effective in assessing the ecological status of these systems. While total phosphorus concentrations play a critical role in determining trophic status, variations in the assimilation of different carbon sources by species in response to alkalinity changes significantly affect the distribution, composition, biovolume, alpha, and gamma diversity of phytoplankton and, consequently, the trophic status of lentic systems. Therefore, alkalinity directly impacts phytoplankton, underscoring its importance as a key parameter in determining phytoplankton-based lake types.

通过对 rkiye海域70个生态系统的研究，以5个碱度组（I: < 140, II: 140 - 200, III: 200-300, IV: 300-600, V: > 600 mg l-1 CaCO3）为代表，评价了碱度对浮游植物组合的影响。分析表明，物种组成随碱度的增加而变化，某些物种倾向于较高的碱度水平，并表现出较高的碱度优化。物种丰富度（α多样性）在类群I中最高，而总物种丰富度（γ多样性）随碱度的增加呈下降趋势，从类群I到类群v。类群v的生物体积最高，除碱度外，电导率、全氮、全磷和pH等其他环境因子对优势种的分布也有显著影响。不同碱度组的物种组成、α多样性和浮游植物生物量的变化。PHYTO-TR指数表明，与碱度较高的类群相比，类群I、II和III表现出较高和良好生态质量系统的比例，使得该指数更能有效地评价这些生态系统的生态状况。虽然总磷浓度在决定营养状态中起着关键作用，但物种对不同碳源的同化变化对碱度变化的响应显著影响浮游植物的分布、组成、生物体积、α和γ多样性，从而影响生态系统的营养状态。因此，碱度直接影响浮游植物，强调其作为确定浮游植物基湖泊类型的关键参数的重要性。

{"title":"Evaluating alkalinity as a key variable for phytoplankton-based lake typology: A case study of 70 lentic systems in Türkiye","authors":"Tuğba Ongun-Sevіndіk , Tolga Çetіn , Uğur Güzel , Ayşe Gül Tekbaba","doi":"10.1016/j.ecohyd.2025.100676","DOIUrl":"10.1016/j.ecohyd.2025.100676","url":null,"abstract":"<div><div><span><span>In the study of 70 lentic systems across Türkiye, the influence of alkalinity on </span>phytoplankton assemblages was evaluated in five alkalinity groups (I: 〈 140, II: 140–200, III: 200–300, IV: 300–600, V: 〉 600 mg l</span><sup>-1</sup> CaCO<sub>3</sub>) as a proxy for geological variation. The analysis revealed that species composition varied with increasing alkalinity, with certain species favoring higher alkalinity levels and exhibiting higher alkalinity optima. Species richness (alpha diversity) was highest in Group I, while total species richness (gamma diversity) exhibited a consistent decline as alkalinity increased, from Group I to Group V. In contrast, the highest phytoplankton biovolume was observed in Group V<sub>.</sub> In addition to alkalinity, other environmental factors including electrical conductivity, total nitrogen, total phosphorus, and pH were found to significantly influence the distribution of dominant species, variations in species composition, alpha diversity, and phytoplankton biovolume across different alkalinity groups. The PHYTO-TR index demonstrated that groups I, II, and III exhibited a higher proportion of high and good ecological quality systems compared to those in higher alkalinity ranges, making the index more effective in assessing the ecological status of these systems. While total phosphorus concentrations play a critical role in determining trophic status, variations in the assimilation of different carbon sources by species in response to alkalinity changes significantly affect the distribution, composition, biovolume, alpha, and gamma diversity of phytoplankton and, consequently, the trophic status of lentic systems. Therefore, alkalinity directly impacts phytoplankton, underscoring its importance as a key parameter in determining phytoplankton-based lake types.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100676"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145738915","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

Partitioning niche and neutral drivers of metacommunity patterns in fish from Brazilian Cerrado streams 巴西塞拉多河流鱼类元群落格局的划分生态位和中性驱动因素

IF 2.2 4区环境科学与生态学 Q2 ECOLOGY

Ecohydrology & Hydrobiology

Pub Date : 2025-12-01 Epub Date: 2025-04-04 DOI: 10.1016/j.ecohyd.2025.100654

Thiago Bernardi Vieira , Lilian Casatti , Renato Mei Romero , Francisco Leonardo Tejerina-Garro , Pedro De Podestà Uchôa de Aquino , Paulo Santos Pompeu , Letícia Lima Correia , Samantha Valente Dias , Paulo De Marco Jr

Metacommunity models aim to explain biodiversity patterns by considering different mechanisms. The Species Sorting concept suggests that local environmental conditions and species-specific traits drive community composition. Neutral Theory highlights the stochastic nature of dispersal and extinction, assuming ecological equivalence among species. The Mass Effect concept integrates these perspectives, emphasizing the interaction between environmental gradients and dispersal. In this study, we partitioned fish communities from Brazilian Cerrado streams between niche and neutral processes, identifying the primary drivers of metacommunity structure. We found that species sorting mechanisms played a dominant role, while neutral processes were best represented by linear, Euclidian, distances, particularly those accounting for physical barriers. These findings underscore the importance of considering local habitat variation and natural barriers in conservation strategies. Although artificial barriers were not explicitly included in our distance matrices, their potential impacts on connectivity warrant further investigation.

元群落模型旨在通过考虑不同的机制来解释生物多样性的模式。物种分选的概念表明，当地的环境条件和物种特有的特征驱动群落组成。中性理论强调扩散和灭绝的随机性质，假设物种之间的生态等效。《质量效应》的概念整合了这些观点，强调环境梯度和分散之间的相互作用。在这项研究中，我们将巴西塞拉多河流的鱼类群落划分为生态位和中性过程，确定了元群落结构的主要驱动因素。我们发现物种分选机制发挥了主导作用，而中性过程最好由线性、欧几里得距离，特别是那些考虑物理障碍的距离来代表。这些发现强调了在保护策略中考虑当地栖息地变化和自然屏障的重要性。虽然我们的距离矩阵中没有明确包括人工障碍，但它们对连通性的潜在影响值得进一步研究。

{"title":"Partitioning niche and neutral drivers of metacommunity patterns in fish from Brazilian Cerrado streams","authors":"Thiago Bernardi Vieira , Lilian Casatti , Renato Mei Romero , Francisco Leonardo Tejerina-Garro , Pedro De Podestà Uchôa de Aquino , Paulo Santos Pompeu , Letícia Lima Correia , Samantha Valente Dias , Paulo De Marco Jr","doi":"10.1016/j.ecohyd.2025.100654","DOIUrl":"10.1016/j.ecohyd.2025.100654","url":null,"abstract":"<div><div>Metacommunity models aim to explain biodiversity patterns by considering different mechanisms. The Species Sorting concept suggests that local environmental conditions and species-specific traits drive community composition. Neutral Theory highlights the stochastic nature of dispersal and extinction, assuming ecological equivalence among species. The Mass Effect concept integrates these perspectives, emphasizing the interaction between environmental gradients<span> and dispersal. In this study, we partitioned fish communities from Brazilian Cerrado streams between niche and neutral processes, identifying the primary drivers of metacommunity structure. We found that species sorting mechanisms played a dominant role, while neutral processes were best represented by linear, Euclidian, distances, particularly those accounting for physical barriers. These findings underscore the importance of considering local habitat variation and natural barriers in conservation strategies. Although artificial barriers were not explicitly included in our distance matrices, their potential impacts on connectivity warrant further investigation.</span></div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100654"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739108","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

Overlap evidence in fish microhabitat use in low-order rivers affected by small hydropower plants 受小型水电站影响的低阶河流鱼类微生境利用的重叠证据

IF 2.2 4区环境科学与生态学 Q2 ECOLOGY

Ecohydrology & Hydrobiology

Pub Date : 2025-12-01 Epub Date: 2025-07-28 DOI: 10.1016/j.ecohyd.2025.100683

Renan Leite , Isabel Boavida , Maria J. Costa , Francisco Godinho , Antonio N. Pinheiro , José Maria Santos

Understanding fish habitat requirements is essential for freshwater conservation, especially in ecosystems affected by hydropower production. Hydropower-driven hydropeaking can disrupt habitat dynamics by altering flow regimes, affecting fish mobility and microhabitat use. This study examined microhabitat overlap in fish populations in two Iberian small rivers, Avelames and Couto (River Douro basin, NE Portugal), affected by small hydropower plants (SHPP; Bragado and Covas). Fish sampling was conducted using modified point electrofishing techniques at reference (upstream) and disturbed (downstream) sites relative to each SHPP during two sampling seasons with hydropeaking (early and late summer). Target species included the leuciscids Northern straight-mouth nase (Pseudochondrostoma duriense), Northern Iberian chub (Squalius carolitertii), calandino (Squalius alburnoides), and the salmonid brown trout (Salmo trutta). Seasonal and spatial interspecific microhabitat overlap was assessed through Schoener’s index. At disturbed sites, cover and depth played a key role in fish microhabitat use. Fish tended to concentrate in shallower, covered habitats. Microhabitat overlap was significantly higher at disturbed sites, with no overlap at reference sites in early summer. Spatial overlap was predominantly observed among dominant leuciscid species, including nase, chub, and calandino. Seasonal variation was less evident at disturbed sites. These findings show that habitat overlap was more pronounced in hydropeaking-affected sites, where seasonal variations in microhabitat use were reduced. This suggests hydropeaking disrupts natural habitat selection, likely limiting fish's ability to adjust to seasonal changes based on ecological requirements. Such alterations may intensify interspecific interactions and constrain species' access to suitable environments, highlighting the need for strategies to mitigate hydropeaking effects.

了解鱼类栖息地需求对淡水资源保护至关重要，特别是在受水电生产影响的生态系统中。水力驱动的水力调峰可以通过改变水流状态，影响鱼类的流动性和微栖息地的利用来破坏栖息地的动态。本研究调查了受小型水电站（SHPP； Bragado和Covas）影响的两条伊比利亚小河，Avelames和Couto（葡萄牙东北部的Douro河流域）的鱼类微生境重叠。在两个有水峰的采样季节（夏初和夏末），在相对于每个SHPP的参考（上游）和干扰（下游）地点，采用改进的点电捕鱼技术进行鱼类取样。目标物种包括北直口鼻鱼（Pseudochondrostoma duriense）、北伊比利亚丘鱼（Squalius carolitertii）、卡兰提诺鱼（Squalius alburnoides）和鲑科褐鳟（Salmo trutta）。利用Schoener’s指数评价种间微生境的季节重叠和空间重叠。在受干扰的地点，覆盖和深度对鱼类微生境的利用起关键作用。鱼倾向于集中在较浅、有盖的栖息地。初夏，受干扰样地的微生境重叠显著增加，参考样地无重叠。优势种间的空间重叠主要存在于nase、chub和calandino。受干扰地点的季节变化不太明显。这些发现表明，在受水峰影响的地点，生境重叠更为明显，微生境利用的季节性变化减少。这表明，水峰值破坏了自然栖息地的选择，可能限制了鱼类根据生态需求适应季节变化的能力。这种变化可能会加强种间的相互作用，限制物种进入合适的环境，强调需要采取策略来减轻水峰效应。

{"title":"Overlap evidence in fish microhabitat use in low-order rivers affected by small hydropower plants","authors":"Renan Leite , Isabel Boavida , Maria J. Costa , Francisco Godinho , Antonio N. Pinheiro , José Maria Santos","doi":"10.1016/j.ecohyd.2025.100683","DOIUrl":"10.1016/j.ecohyd.2025.100683","url":null,"abstract":"<div><div>Understanding fish habitat requirements is essential for freshwater conservation, especially in ecosystems affected by hydropower production. Hydropower-driven hydropeaking can disrupt habitat dynamics by altering flow regimes, affecting fish mobility and microhabitat use. This study examined microhabitat overlap in fish populations in two Iberian small rivers, Avelames and Couto (River Douro basin, NE Portugal), affected by small hydropower plants (SHPP; Bragado and Covas). Fish sampling was conducted using modified point electrofishing techniques at reference (upstream) and disturbed (downstream) sites relative to each SHPP during two sampling seasons with hydropeaking (early and late summer). Target species included the leuciscids Northern straight-mouth nase (<em>Pseudochondrostoma duriense</em>), Northern Iberian chub (<em>Squalius carolitertii</em>), calandino (<em>Squalius alburnoides</em>), and the salmonid brown trout (<em>Salmo trutta</em>). Seasonal and spatial interspecific microhabitat overlap was assessed through Schoener’s index. At disturbed sites, cover and depth played a key role in fish microhabitat use. Fish tended to concentrate in shallower, covered habitats. Microhabitat overlap was significantly higher at disturbed sites, with no overlap at reference sites in early summer. Spatial overlap was predominantly observed among dominant leuciscid species, including nase, chub, and calandino. Seasonal variation was less evident at disturbed sites. These findings show that habitat overlap was more pronounced in hydropeaking-affected sites, where seasonal variations in microhabitat use were reduced. This suggests hydropeaking disrupts natural habitat selection, likely limiting fish's ability to adjust to seasonal changes based on ecological requirements. Such alterations may intensify interspecific interactions and constrain species' access to suitable environments, highlighting the need for strategies to mitigate hydropeaking effects.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100683"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739112","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

Sustainable development goals and effects of Land-Use–Land-Cover (LULC) changes on vegetation using Kubanni River Basin, Zaria, Nigeria as a case-in-point 可持续发展目标及土地利用-土地覆盖变化对植被的影响——以尼日利亚库班尼河流域为例

IF 2.2 4区环境科学与生态学 Q2 ECOLOGY

Ecohydrology & Hydrobiology

Pub Date : 2025-12-01 Epub Date: 2025-09-03 DOI: 10.1016/j.ecohyd.2025.100694

Chiedu F. Mafiana , Josephat U. Izunobi , Emily O. Iduseri , Idowu I. Abbas , Hosea G. Kama

Water resources are unarguably sine qua non in the biosphere. Their availability and supply are, therefore, intrinsic to the attainment of the United Nations’ sustainable development goals (SDGs). These can be exacerbated by the ever-present, far-reaching changes in the hydrological and fluvial systems of the world; often triggered by naturogenic and anthropogenic variables, locally and globally. Consequently, this study used the land-use/cover (LULC) changes/trajectories of the Kubanni river basin in Zaria, Nigeria, over a 32-year period (1990–2022), to interrogate the alterations and transformations of its hydrological ecosystem and services as well as land-covers. Variable LULC classifications of built-up, waterbody, vegetation and uncultivated land were considered, and increases in built-up (121 %), waterbody (149 %) and uncultivated land (14 %) as well as decrease (39 %) in vegetation were observed. Significantly, waterbody expanded to 117.3 from 47.1 (km²) at an annual rate of 4.7 % whereas vegetation shrunk to 1063 from 1755 (km²) at 1.2 % per annum. Besides, waterbody LULC experienced the least gain (109.8 km²) and loss (–39.6 km²) while vegetation LULC lost the most area (–992.8 km²) and uncultivated land LULC gained most (910.9 km²). The data suggests that water resources increased with urbanization but appeared sustainable; in the face of dwindling vegetation, expanding uncultivated land and approximately 70 % of untransformed land area. It also highlights the need for SDGs’ attainments as 2030 beckons. The intensification of tree-planting and similar initiatives, to check vegetation depletion is recommended; as is sustainable agriculture since healthy vegetations breed highly resourced hydrological ecosystems.

水资源无疑是生物圈的必要条件。因此，它们的可用性和供应是实现联合国可持续发展目标（sdg）的内在因素。世界水文和河流系统不断发生的影响深远的变化可能会加剧这些问题；通常由本地和全球的自然和人为变量触发。因此，本研究利用尼日利亚扎里亚库班尼河流域32年（1990-2022年）的土地利用/覆盖（LULC）变化/轨迹，考察其水文生态系统和服务以及土地覆盖的变化和转变。考虑建成区、水体、植被和荒地的可变LULC分类，建成区（121%）、水体（149%）和荒地（14%）增加，植被（39%）减少。值得注意的是，水体以每年4.7%的速度从47.1 km2扩大到117.3 km2，而植被以每年1.2%的速度从1755 km2缩小到1063 km2。水体LULC增加最少（109.8 km2），减少最少（-39.6 km2），植被LULC减少最多（-992.8 km2），荒地LULC增加最多（910.9 km2）。数据表明，水资源随着城市化的发展而增加，但呈现出可持续性；面对日益减少的植被，不断扩大的荒地和约70%的未改造土地面积。报告还强调了在2030年到来之际实现可持续发展目标的必要性。建议加强植树和类似的倡议，以制止植被耗竭；可持续农业也是如此，因为健康的植被孕育了资源丰富的水文生态系统。

{"title":"Sustainable development goals and effects of Land-Use–Land-Cover (LULC) changes on vegetation using Kubanni River Basin, Zaria, Nigeria as a case-in-point","authors":"Chiedu F. Mafiana , Josephat U. Izunobi , Emily O. Iduseri , Idowu I. Abbas , Hosea G. Kama","doi":"10.1016/j.ecohyd.2025.100694","DOIUrl":"10.1016/j.ecohyd.2025.100694","url":null,"abstract":"<div><div>Water resources are unarguably <em>sine qua non</em> in the biosphere. Their availability and supply are, therefore, intrinsic to the attainment of the United Nations’ sustainable development goals (SDGs). These can be exacerbated by the ever-present, far-reaching changes in the hydrological and fluvial systems of the world; often triggered by naturogenic and anthropogenic variables, locally and globally. Consequently, this study used the land-use/cover (LULC) changes/trajectories of the Kubanni river basin in Zaria, Nigeria, over a 32-year period (1990–2022), to interrogate the alterations and transformations of its hydrological ecosystem and services as well as land-covers. Variable LULC classifications of built-up, waterbody, vegetation and uncultivated land were considered, and increases in built-up (121 %), waterbody (149 %) and uncultivated land (14 %) as well as decrease (39 %) in vegetation were observed. Significantly, waterbody expanded to 117.3 from 47.1 (km<sup>2</sup>) at an annual rate of 4.7 % whereas vegetation shrunk to 1063 from 1755 (km<sup>2</sup>) at 1.2 % per annum. Besides, waterbody LULC experienced the least gain (109.8 km<sup>2</sup>) and loss (–39.6 km<sup>2</sup>) while vegetation LULC lost the most area (–992.8 km<sup>2</sup>) and uncultivated land LULC gained most (910.9 km<sup>2</sup>). The data suggests that water resources increased with urbanization but appeared sustainable; in the face of dwindling vegetation, expanding uncultivated land and approximately 70 % of untransformed land area. It also highlights the need for SDGs’ attainments as 2030 beckons. The intensification of tree-planting and similar initiatives, to check vegetation depletion is recommended; as is sustainable agriculture since healthy vegetations breed highly resourced hydrological ecosystems.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100694"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145738833","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

Rainfall partitioning of tree species in a seasonally dry forest in a semiarid region of Brazil 巴西半干旱地区季节性干旱森林树种的降雨分配

IF 2.2 4区环境科学与生态学 Q2 ECOLOGY

Ecohydrology & Hydrobiology

Pub Date : 2025-12-01 Epub Date: 2025-02-08 DOI: 10.1016/j.ecohyd.2025.100645

Carlos André Alves de Souza , Alexandre Maniçoba da Rosa Ferraz Jardim , Luciana Sandra Bastos de Souza , José Edson Florentino de Morais , George do Nascimento Araújo Júnior , Cleber Pereira Alves , Daniela Carvalho Lopes , Antonio José Steidle Neto , Gabriel Ítalo Novaes da Silva , Wilma Roberta dos Santos , Elisiane Alba , Ênio Farias de França e Silva , Alexsandro Oliveira da Silva , Thieres George Freire da Silva

The rainfall distribution in seasonally dry tropical forests is fundamental to the water balance in several world regions. This study aimed to quantify rainfall partitioning by the Caatinga Biome, and its relationship with the rainfall characteristics and morphological characteristics of seven species. The study was conducted in the Brazilian semiarid region, from November 2017 to December 2020. Rainfall partitioning was measured to determine internal precipitation (Tf), stemflow (Sf) and interception (I), and to analyse the relationship with total rainfall, intensity and duration, and with tree characteristics: plant height; number of stems; diameter at breast height; and crown projection area. A total of 167 rainfall events were identified with Tf, Sf and I accounting for 83.1 %, 0.5 % and 16.4 % of the total rainfall. The amount of rainfall varied from 1 to 141 mm (mean of 12 mm). Duration ranged from 0.17 to 9.17 h (mean of 1.78 h), while rainfall intensity ranged from 1.2 to 27.6 mm h⁻¹ (mean of 5.9 mm h⁻¹). There were variances in rainfall partitioning between the species, with Aspidosperma pyrifolium showing the greatest I (21.0 %). Rainfall characteristics affected the Tf, Sf and I, more than the morphological characteristics of trees for some species. However, the results of regression analysis showed that Tf, Sf and I were most correlated with amount of rainfall (0.20 < R² < 0.90; p < 0.001). The rainfall partitioning according to the predominant tree species should be considered in seasonally dry forests in the semiarid region of Brazil to improve water resource management.

季节性干燥热带森林的降雨分布对世界上一些地区的水平衡至关重要。本研究旨在量化Caatinga生物群系的降雨分配，及其与7个物种的降雨特征和形态特征的关系。该研究于2017年11月至2020年12月在巴西半干旱地区进行。通过测量降雨分配来确定内部降水量（Tf）、茎流（Sf）和截留量(I)，并分析与总降雨量、强度和持续时间以及树木特征的关系：株高；茎数；胸围高度的直径；和树冠投影面积。共鉴定出167个降雨事件，其中Tf、Sf和I分别占总降雨量的83.1%、0.5%和16.4%。雨量由1至141毫米不等（平均12毫米）。持续时间为0.17 ~ 9.17 h（平均1.78 h），降雨强度为1.2 ~ 27.6 mm h - 1（平均5.9 mm h - 1）。不同树种间的降雨分配存在差异，以梨叶穗轴草的降雨分配最大（21.0%）。降雨特征对水分、水分和水分的影响大于某些树种的形态特征。然而，回归分析结果显示，Tf、Sf和I与降雨量的相关性最强（R2 < 0.20; p < 0.001）。巴西半干旱区季节性干旱森林应考虑根据优势树种进行降雨分配，以改善水资源管理。

{"title":"Rainfall partitioning of tree species in a seasonally dry forest in a semiarid region of Brazil","authors":"Carlos André Alves de Souza , Alexandre Maniçoba da Rosa Ferraz Jardim , Luciana Sandra Bastos de Souza , José Edson Florentino de Morais , George do Nascimento Araújo Júnior , Cleber Pereira Alves , Daniela Carvalho Lopes , Antonio José Steidle Neto , Gabriel Ítalo Novaes da Silva , Wilma Roberta dos Santos , Elisiane Alba , Ênio Farias de França e Silva , Alexsandro Oliveira da Silva , Thieres George Freire da Silva","doi":"10.1016/j.ecohyd.2025.100645","DOIUrl":"10.1016/j.ecohyd.2025.100645","url":null,"abstract":"<div><div><span><span>The rainfall distribution in seasonally dry tropical forests is fundamental to the water balance in several world regions. This study aimed to quantify rainfall partitioning by the Caatinga Biome, and its relationship with the rainfall characteristics and morphological characteristics of seven species. The study was conducted in the Brazilian semiarid region, from November 2017 to December 2020. Rainfall partitioning was measured to determine internal precipitation (Tf), </span>stemflow<span> (Sf) and interception (I), and to analyse the relationship with total rainfall, intensity and duration, and with tree characteristics: plant height; number of stems; diameter at breast height; and crown projection area. A total of 167 rainfall events were identified with Tf, Sf and I accounting for 83.1 %, 0.5 % and 16.4 % of the total rainfall. The amount of rainfall varied from 1 to 141 mm (mean of 12 mm). Duration ranged from 0.17 to 9.17 h (mean of 1.78 h), while rainfall intensity ranged from 1.2 to 27.6 mm h</span></span><sup>−1</sup> (mean of 5.9 mm h<sup>−1</sup>). There were variances in rainfall partitioning between the species, with <span><em>Aspidosperma</em><em> pyrifolium</em></span> showing the greatest I (21.0 %). Rainfall characteristics affected the Tf, Sf and I, more than the morphological characteristics of trees for some species. However, the results of regression analysis showed that Tf, Sf and I were most correlated with amount of rainfall (0.20 < R<sup>2</sup> < 0.90; <em>p</em><span> < 0.001). The rainfall partitioning according to the predominant tree species should be considered in seasonally dry forests in the semiarid region of Brazil to improve water resource management.</span></div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100645"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145738786","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

Richness of macrophyte functional groups in relation to hydromorphological and hydrochemical factors of organic rivers in the Biebrza National Park 别布尔扎国家公园有机河流中大型植物官能团丰富度与水文形态和水化学因子的关系

IF 2.2 4区环境科学与生态学 Q2 ECOLOGY

Ecohydrology & Hydrobiology

Pub Date : 2025-12-01 Epub Date: 2025-05-09 DOI: 10.1016/j.ecohyd.2025.100667

Krzysztof Szoszkiewicz , Karol Pietruczuk , Szymon Jusik , Anna Budka , Karolina Pietruczuk

This study focused on the expansive area of the Biebrza National Park (BNP), with well-preserved aquatic ecosystems. The research aimed to reveal the ecological determinants of plant diversification of the BNP river network, considering water quality and hydromorphological factors. The species richness of macrophytes, considering their various functional groups, were analysed, considering different ecological groups of aquatic plants. The biodiversity estimates are based on field research results (reference sample) and extrapolated values. Field research was conducted across the entire BNP area, surveying 25 sites. The study found that the species richness largely depended on the hydromorphological quality of the habitat and was influenced by the size of the river channel and water trophic conditions, especially phosphorus richness and the ammonium form of nitrogen. The ecological reaction on species richeness was particularly evident in the case of submerged macrophytes. The average number of macrophyte taxa observed at each site was relatively high compared to other Polish rivers, but still the overall number of identified taxa and estimated species richness were smaller than other river basins in Poland. The relatively low species richness of macrophytes in the BNP area primarily resulted from the homogeneity of habitat conditions in the studied watercourses, characterised by organic types with laminar water flow and limited substrate diversity. To ensure comprehensive inventorying, continued efforts are recommended, with doubling the number of surveyed sites as the most rational approach.

本研究的重点是Biebrza国家公园（BNP）的广阔区域，该区域拥有保存完好的水生生态系统。在考虑水质和水文形态因素的基础上，揭示了BNP河网植物多样性的生态决定因素。考虑到水生植物不同的生态类群，分析了大型植物不同功能类群的物种丰富度。生物多样性估算是基于野外研究结果（参考样本）和外推值。在整个BNP地区进行了实地调查，调查了25个地点。研究发现，物种丰富度在很大程度上取决于生境的水文形态质量，受河道大小和水体营养条件的影响，尤其是磷丰富度和氮的铵态态。在沉水植物中，物种丰富度的生态反应尤为明显。各样点观测到的大型植物类群的平均数量与波兰其他河流相比相对较高，但鉴定类群的总数和物种丰富度仍低于波兰其他河流流域。BNP地区大型植物物种丰富度相对较低的主要原因是生境条件的同质性，主要表现为层流有机类型和底物多样性有限。为了确保全面的盘点，建议继续努力，将调查地点的数量增加一倍是最合理的方法。

{"title":"Richness of macrophyte functional groups in relation to hydromorphological and hydrochemical factors of organic rivers in the Biebrza National Park","authors":"Krzysztof Szoszkiewicz , Karol Pietruczuk , Szymon Jusik , Anna Budka , Karolina Pietruczuk","doi":"10.1016/j.ecohyd.2025.100667","DOIUrl":"10.1016/j.ecohyd.2025.100667","url":null,"abstract":"<div><div><span>This study focused on the expansive area of the Biebrza National Park (BNP), with well-preserved aquatic ecosystems. The research aimed to reveal the ecological determinants of plant diversification of the BNP river network, considering water quality and hydromorphological factors. The species richness of macrophytes, considering their various functional groups, were analysed, considering different ecological groups of </span>aquatic plants. The biodiversity estimates are based on field research results (reference sample) and extrapolated values. Field research was conducted across the entire BNP area, surveying 25 sites. The study found that the species richness largely depended on the hydromorphological quality of the habitat and was influenced by the size of the river channel and water trophic conditions, especially phosphorus richness and the ammonium form of nitrogen. The ecological reaction on species richeness was particularly evident in the case of submerged macrophytes. The average number of macrophyte taxa observed at each site was relatively high compared to other Polish rivers, but still the overall number of identified taxa and estimated species richness were smaller than other river basins in Poland. The relatively low species richness of macrophytes in the BNP area primarily resulted from the homogeneity of habitat conditions in the studied watercourses, characterised by organic types with laminar water flow and limited substrate diversity. To ensure comprehensive inventorying, continued efforts are recommended, with doubling the number of surveyed sites as the most rational approach.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100667"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145738955","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