应用生态学报最新文献

{"title":"Selection, identification, and ecological application potential of key bacteria in biological soil crusts of deserts.","authors":"Li-Na Zhao, Xiao-Han Chen, Ming-Xin Li, Ya-Ning Li, Yi-Ni Zhang, Yuan-Jing-Kun Gao, Shao-Bin Gu","doi":"10.13287/j.1001-9332.202505.011","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202505.011","url":null,"abstract":"<p><p>To address the challenges of nutrient deficiency and plant growth in desertified areas, we screened and identified key strains with extracellular hydrolase production and phosphorus and potassium solubilizing functions from biological soil crusts (BSC), and evaluated their survival capabilities under stressed conditions. Among the 13 strains screened from BSC, YD-7 exhibited the highest activity for amylase and cellulase, with hydrolysis zone diameters of 2.27 and 1.70 cm, respectively. YD-8 and YD-5 exhibited the highest activity for protease, with hydrolysis zone diameters of 2.79 and 2.15 cm, respectively. In the tests for phosphorus and potassium solubilizing abilities, strains YD-5, YD-7, and YD-8 showed high activity, with soluble phosphorus contents of 43.66, 37.23, and 35.61 mg·L^-1, respectively. Growth experiments under stress conditions indicated that these strains exhibited good growth characteristics (survival rate >50%) under conditions of PEG-6000 concentration below 10%, tempera-tures of 28-36 ℃, pH values of 4-9, and NaCl concentration below 3%. Analysis based on phylogenetic tree revealed that YD-5, YD-7, and YD-8 were identified as <i>Acinetobacter haemolyticus</i>, <i>Stenotrophomonas maltophilia</i>, and <i>Klebsiella pneumoniae</i>, respectively. All the three strains have the potential for improving the quality of desert soils.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 5","pages":"1407-1412"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144209786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of forest type conversion on soil organic carbon mineralization and its abiotic regulation factors in humid subtropics.","authors":"Ai-Ping Liu, Xiao-Hong Wang, Jie Sun, Ai-Lian Fan, Lin-Qiao Jia, Xiao-Dong Yao, Cheng-Fang Lin, Guang-Shui Chen","doi":"10.13287/j.1001-9332.202505.014","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202505.014","url":null,"abstract":"<p><p>Forest harbors the largest carbon reservoir in the terrestrial ecosystems. The conversion of forest types may lead to significant changes in soil carbon pools and carbon mineralization. We collected soil samples at 0-10 cm depth converted from <i>Castanopsis carlesii</i> natural forests (NF) to <i>C. carlesii</i> plantations (CC) and <i>Cunninghamia lanceolata</i> plantations (CF) at both Chenda and Xinkou sites in Sanming, Fujian Province to analyze the differences in soil organic carbon mineralization among the three forest types by laboratory incubation. We examined the effects of abiotic variations caused by forest conversion on soil organic carbon (SOC) mineralization, including SOC, total nitrogen (TN), iron and aluminum oxides, mean weight diameter (MWD) of aggregates, and particle size composition. The results showed that the contents of SOC, TN, and MWD differed significantly among the three forest types at both sites, which followed the order of NF>CC>CF. The iron and aluminum oxide contents in CF were significantly lower than those in NF and CC. The sand content in NF was significantly higher than those in CC and CF, while the silt content showed an inverse pattern. The clay content in CC was significantly higher than those in NF and CF. The cumulative carbon mineralization per unit soil (<i>C</i>_m-soil) was significantly affected by stand type, with the <i>C</i>_m-soil in CC and CF stands being 11.3% and 23.3% lower than in NF stands, respectively. The cumulative carbon mineralization per unit soil organic carbon (<i>C</i>_m-SOC) was significantly affected by the interaction between forest types and sites, in that the <i>C</i>_m-SOC in NF stands was 32.8% lower than that in CF at the Chenda site but without differences among forest types at Xinkou site. The <i>C</i>_m-soil positively and significantly correlated with SOC content at both sites, with MWD on the Chenda site, with iron oxide on the Xinkou site, respectively. However, the correlations between <i>C</i>_m-soil and MWD or iron oxides became no significance after introducing SOC as the controlling factor in partial correlation analysis, which suggested that the SOC mediated the relationships between <i>C</i>_m-soil and MWD or iron oxides at both sites. Overall, the conversion of natural forest to plantations could decrease soil C mineralization, due to the decline of SOC content. The effect of aggregate stability, iron and aluminum oxides on soil carbon mineralization varied depending on the site.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 5","pages":"1371-1379"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144209762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Home-field advantage of woody debris decomposition and its response to the drought on the Loess Plateau, China.","authors":"Lu-Lu Ma, Qian-Qian Zuo, Ze-Bin Jiao, Zhu-Qi Zhao, Zhen-Hong Hu","doi":"10.13287/j.1001-9332.202505.002","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202505.002","url":null,"abstract":"<p><p>Studying the home-field advantage (HFA) in woody debris decomposition is crucial for accurately estimating carbon fluxes of woody debris and its contribution to forest carbon balance. We conducted a decomposition experiment with reciprocal transplantation using woody debris of two dominant afforestation species (<i>Robinia pseu-doacacia</i> and <i>Pinus tabuliformis</i>) on the Loess Plateau, China. We set up three different rainfall levels: control (0% precipitation reduction), 40% precipitation reduction, and 80% precipitation reduction. By monitoring the microbial respiration carbon fluxes of woody debris for one year, we investigated the HFA effect of woody debris decomposition and its drought response. The results showed that the HFA effect was negatively correlated with substrate quality. <i>R. pseudoacacia</i> debris exhibited non-significant HFA, while <i>P. tabuliformis</i> debris with lower substrate quality displayed significant positive HFA. Fungal community structure in <i>R. pseudoacacia</i> debris showed no difference between home and away fields, whereas <i>P. tabuliformis</i> debris had distinct fungal community between home and away fields (<i>R</i>²=0.22). Debris of both species demonstrated significantly higher abundance of potential key species in the fungi at the home fields, with <i>P. tabuliformis</i> debris microbial respiration showing positive correlation with Basidiomycetes abundance (<i>R</i>²=0.23). In the Loess Plateau region with low moisture content, HFA effects of woody debris decomposition were primarily regulated by tree species identity and were not sensitive to drought-induced moisture change.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 5","pages":"1398-1406"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144209767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analyzing water balance characteristics with remote sensing evapotranspiration data in Zhangwu County, Liaoning Province, China.","authors":"Quan-Lai Zhou, Zhi-Min Liu, Hang Yu, Qun Ma, Wei Liang, Yan Jiang, Jia-Qi Zhang, Ying-Pei Ma","doi":"10.13287/j.1001-9332.202505.023","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202505.023","url":null,"abstract":"<p><p>Clarifying the characteristics of water balance is the key to ecological environment protection and sustainable management of water resources. Based on 2017, 2020 and 2023 land use remote sensing images, MOD16A2 remote sensing evapotranspiration images and meteorological data, using land use dynamic degree model and remote sensing data inversion, we examined the temporal and spatial dynamics, evapotranspiration dynamics, and precipitation dynamics of different land-use types in Zhangwu County of Liaoning Province, and quantified the interannual and seasonal dynamics of regional water balance. The results showed that Zhangwu County featured an agricultural-dominated with mixed farming-grazing system. During the study period, farmland and grassland accounted for 86.5% of the total area, serving as primary evapotranspiration sources, while construction land only accounted for 9.0%. The comprehensive land-use dynamic degree decreased, suggesting stabilization of ecological elements toward a sustainable pattern. The evapotranspiration (388.2 mm) was the main water loss pathway, with a threshold temperature of 15.9 ℃ triggering significant evapotranspiration increase. Evapotranspiration exhibited higher values in growing season than non-growing season, and in years with abundant precipitation versus dry years. The annual water budget showed an average surplus of 86.7 mm, with soil moisture dynamics cycling through stable (November-February), depletion (March-June), and replenishment (July-October) periods. A water balance management strategy for soil moisture in farmland should be formulated during the soil moisture depletion and replenishment periods, to meet the water balance and ensure the sustainability of water resources of Zhangwu County.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 5","pages":"1461-1468"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144209746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantifying the effect of thinning intensity on competitive relationships in <i>Larix olgensis</i> plantations based on terrestrial laser scanning.","authors":"Fan Wang, Wei-Wei Jia, Feng-Ri Li, Yi-Ren Tang, Ying Zhang","doi":"10.13287/j.1001-9332.202505.009","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202505.009","url":null,"abstract":"<p><p>We acquired the terrestrial laser scanning (TLS) point cloud data of five permanent plots of <i>Larix olgensis</i> plantations with different thinning intensities [control (CK), four low-intensity thinning treatments (T₁), two medium-intensity plus one low-intensity thinning treatments (T₂), two medium-intensity thinning treatments (T₃), and two high-intensity thinning treatments (T₄)] in the Mengjiagang Forest Farm. Then, we verified the use of TLS to quantify the individual tree Hegyi competition index (CI) in plantations and analyzed the effect of thinning intensities on stem and crown competition in <i>L. olgensis</i>. The results showed that the thinning treatment reduced the competition among <i>L. olgensis</i> trees, with the average competition indices of T₁, T₂, T₃ and T₄ plots being decreased by 0.5%-10.7%, 15.1%-20.6%, 28.6%-34.8% and 39.2%-47.9%, respectively. There were significant differences in the stem-based CI (diameter at breast height, tree height) among different treatments. CI based on crown volume and crown surface area showed significant differences among the thinning treatments. In contrast, the differences in CI based on maximum crown diameter and crown projection area were not significant between the control and low-intensity thinning treatments, though differed significantly between all other treatments. In summary, TLS-based point clouds could quantify individual tree stem and crown competition, and CI based on crown volume and surface area could effectively reflect the competitive relationships within thinned forest stands.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 5","pages":"1309-1318"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144209781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Traits and economic spectrum of different-aged leaf of <i>Kandelia obovata</i> in Minjiang River estuary, China.","authors":"Rui-Xin Chen, Ting-Yi Jian, Yong-Ming Lin, Ying-Zi Wang, Tao Hong","doi":"10.13287/j.1001-9332.202505.008","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202505.008","url":null,"abstract":"<p><p>To elucidate the adaptive mechanisms and strategies of different-aged leaves of <i>Kandelia obovata</i> in response to resource limitations in the Minjiang River Estuary Wetland Nature Reserve, we measured 21 leaf functional traits from current-year and previous-year leaves, and compared the traits between the two leaf types to construct leaf economic spectrum. The results showed that the fresh and dry weight of <i>K. obovata</i> in the previous-year leaves was 2.3 times of current-year leaves. There was a significant difference in nitrogen (N) content, with values of 20.59 mg·g^-1 for current-year leaves and 15.88 mg·g^-1 for previous-year leaves, as well as in phosphorus (P) content, with values of 1.40 and 1.06 mg·g^-1, respectively. There was a significant positive correlation between N and P content. The net photosynthetic rate differed significantly, with values of 7.53 and 4.68 μmol·m^-2·s^-1 for current-year and previous-year leaves, respectively. There was a significant difference in stomatal conductance (0.16 vs. 0.15 mol·m^-2·s^-1). The economic spectrum indicated that current-year leaves possessed traits such as thin structure, rapid extension, high photosynthetic efficiency, low leaf tissue density, and higher N and P content, reflecting a strategy of rapid investment and return. In contrast, previous-year leaves exhibited thicker structure, slower extension, lower photosynthetic efficiency, higher leaf tissue density, and lower N and P content, adopting a more conservative and slow-investment growth strategy. These findings suggested that <i>K. obovata</i> employed two distinct growth strategies, adjusting leaf structure and physiological properties to enhance its survival in stressed environments.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 5","pages":"1330-1338"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144209793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characteristics of soil seed banks and their influencing factors in <i>Ephedra rhytidosperma</i> communities at different altitudes on the eastern foothills of Helan Mountain, China.","authors":"Wen-Jie Shi, Qin Ma, Jun-Long Yang, Xiao-Wei Li, Jun Yang, Yong-Liang Liang, Jing-Yao Li","doi":"10.13287/j.1001-9332.202505.007","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202505.007","url":null,"abstract":"<p><p><i>Ephedra rhytidosperma</i> is a national key protected plant species in the eastern foothills of the Helan Mountains. We established sample plots in <i>E. rhytidosperma</i> communities at altitudes of 1236, 1350, 1477, and 1603 m. Through field surveys and indoor seed bank germination experiments, we investigated the characteristics of soil seed banks in <i>E. rhytidosperma</i> community across different altitudes and their influencing factors. The results showed that in the soil seed banks across four altitudes, a total of 13 plant species germinated, belonging to 12 genera and 7 families. Species from Amaranthaceae and Poaceae were predominant, with annual herbs constituting the primary life form. The Margalef richness and Shannon diversity index were lowest in the 1477 m plot and highest in the 1603 m plot. The average density of soil seed bank ranged from 1713 to 9127 seeds·m^-2, showing a pattern of initial increase followed by decrease with increasing altitude. Soil seed bank density at 1350 m and 1477 m plots were significantly higher than those at 1236 m and 1603 m plots. Most seeds were distributed in the litter layer and the 0-5 cm soil layer, with soil seed bank density progressively decreasing with increasing soil depth. The similarity between soil seed bank and the aboveground vegetation in species composition was low. Redundancy analysis revealed that aboveground vegetation richness index and dominance index were key vegetation factors affecting soil seed bank, with explained variance percentages of 19.5% and 28.4%, and contribution rates of 24.6% and 35.9%, respectively. Soil bulk density was the significant soil factor affecting soil seed bank, but exhibited a relatively low explanatory rate (8.9%) and with a contribution rate of 11.3%. In conclusion, the mid-altitude suitable habitats (1350 m and 1477 m) exhibited higher regeneration potential of soil seed bank, enabling natural restoration via seed bank. However, marginal altitude non-suitable habitats (1236 m and 1603 m) required interventions (enclosure and reseeding) to enhance seed bank species richness and seed reserves, promote positive community succession, and thereby strengthen ecosystem stability and resilience.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 5","pages":"1361-1370"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144209748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Response of soil properties and fungi community to rainfall reduction in a subtropical natural <i>Castanopsis carlesii</i> forest.","authors":"Man-Li Zha, Shuai-Jun Li, Cui-Juan Wang, Wei-Sheng Lin, Xiao-Fei Liu, Xian-Fang Zhong, Jian-Fen Guo","doi":"10.13287/j.1001-9332.202505.013","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202505.013","url":null,"abstract":"<p><p>Water is one of the important factors in forest soil environment, the changes of which affect the composition of soil fungal communities and soil ecosystem functions. Taking the natural forest of <i>Castanopsis pilosula</i> in Sanming, Fujian Province as the research object, we set up treatments with 30% or 60% rainfall exclusion, and natural control. We collected surface soil samples (0-10 cm) after 6-yr rainfall exclusion to analyze soil properties and fungal community structure and diversity by 18S rRNA gene high-throughput sequencing technology. The results showed that soil water content and ammonium nitrogen content was significantly decreased by 16.4% and 29.5% respectively under the 60% rainfall exclusion treatment, while the total organic carbon, soluble organic carbon, microbial biomass carbon, soluble organic nitrogen, nitrate nitrogen content, and pH of the soil did not change. Soil soluble organic nitrogen content under the 30% rainfall exclusion significantly decreased by 13.8%, while other soil physical and chemical indicators changed little. The relative abundance of Basidiomycota and Ascomycota accounted for over 40% of the fungal community under all treatments, which were the dominant fungal group. The ACE index of soil fungal communities significantly decreased under the 60% rainfall exclusion treatment, while other diversity indices showed no significant differences among the three treatments, indicating that the structure of soil fungal communities was relatively stable. Results of Mantel test showed that the phyla Ascomycota and unclassified fungi (norank_k_Fungi, unclassified_k_Fungi) were significantly positively correlated with soil water content, which might be a key factor driving the changes in soil fungal communities. Our results provide scientific basis for a deeper understanding of the maintenance of forest soil ecosystem functions under climate change.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 5","pages":"1380-1386"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144209784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatial network correlation and driving factors of agricultural resilience in the Yangtze River Basin, China.","authors":"Hui-Yan Qin, Meng-Fei Kong, Hong-Ge Zhu","doi":"10.13287/j.1001-9332.202505.025","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202505.025","url":null,"abstract":"<p><p>Agricultural resilience and stability are critical to achieving high quality agricultural development. We developed an agricultural resilience assessment framework with three dimensions: disturbance resistance, stability and innovation capacity. Then, we measured the agricultural resilience of 11 province-level regions in the Yangtze River Basin from 2011 to 2021, and applied social network to examine the spatial network characteristics of agricultural resilience, employed quadratic assignment procedure model to analyze key driving factors. The results showed that, from 2011 to 2021, the agricultural resilience of different provinces in the Yangtze River basin had some differences, but the overall average value showed an upward trend, increasing from 0.28 in 2011 to 0.38 in 2021. The overall network connection of agricultural resilience among the provinces in the Yangtze River Basin was not close. Results of individual network and block model analysis showed that Hubei Province played a crucial role in the overall network, with the spillover relation number of 4 and a beneficiary relation number of 10. Agricultural human capital, market scale, and ecological governance level had a significant positive impact on regional agricultural resilience, with the model explaining 94.2% of the variance. To effectively enhance agricultural resilience in the Yangtze River basin, it is essential to promote coordinated and shared agricultural development, strengthen agricultural education, continuously deepen agricultural system reform and supply-side structural reform, and adhere to ecological governance.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 5","pages":"1449-1460"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144209789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The importance of cryptophytes in phytoplankton community in Xiangshan Bay.","authors":"Peng Wang, Zhi-Bing Jiang, Yuan-Li Zhu, Zhen-Hao Sun, Yu-Lu Jiang, Hua Lin, Jiang-Ning Zeng","doi":"10.13287/j.1001-9332.202505.035","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202505.035","url":null,"abstract":"<p><p>Cryptophytes, as an important phytoplankton group, are usually neglected under traditional microscopical examination. We investigated the spatial and temporal variations of cryptophyte abundances in Xiangshan Bay (XSB) and their importance in the phytoplankton community using data from phytoplankton and environmental factors across four seasons in 2021. We found significant seasonal and spatial differences in cryptophyte abundances in XSB. On the seasonal scale, cryptophyte abundances (cells·mL^-1) showed summer (3944) > winter (2533) > spring (271) > autumn (199). On the spatial scale, cryptophyte abundance showed the lower section (2179) > middle section (1799) > upper section (897). The relative abundances of cryptophytes (61.7% and 43.5%) were higher than those of diatoms (5.7% and 32.1%) in both spring and autumn, and the dominance of cryptophytes (21.9% and 22.3%) was second only to diatoms (76.3% and 74.5%) in winter and summer. Similarity percentage analyses showed that cryptophytes contributed largely (>11.2%) to the seasonal and spatial variations in the phytoplankton community in XSB, which occupied an important position in the phytoplankton community. The genera-lized additive models showed that the seasonal variation in cryptophyte abundances was mainly regulated by tempera-ture and that the spatial distribution was mainly influenced by salinity and dissolved reactive phosphorus. The spatial and temporal variation in cryptophyte relative abundances was mainly regulated by temperature. Our results indicated that the environment with low temperature, low salinity, and high dissolved reactive phosphorus might be more favourable for the growth of cryptophytes in XSB.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 5","pages":"1531-1539"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144209792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}