Jiali Yang, Zhengfei Li, Erik Jeppesen, Dieison A. Moi, Yang Liu, Yangxin Mo, Xue Bai, Feihua Wang, Zhicai Xie, Junqian Zhang
{"title":"Urbanization alters river multifunctionality by reducing macroinvertebrate diversity in highly human‐impacted plain river networks","authors":"Jiali Yang, Zhengfei Li, Erik Jeppesen, Dieison A. Moi, Yang Liu, Yangxin Mo, Xue Bai, Feihua Wang, Zhicai Xie, Junqian Zhang","doi":"10.1002/lno.70221","DOIUrl":"https://doi.org/10.1002/lno.70221","url":null,"abstract":"Urbanization has dramatically destabilized crucial ecosystem functions through extensive land‐use changes, habitat fragmentation, and modified species compositions. However, the mechanisms through which urbanization affects river ecosystem multifunctionality (EMF)—the simultaneous performance of multiple ecosystem functions—remain largely unknown. This study evaluated the impact of urbanization on EMF using macroinvertebrate community data collected from 83 sampling sites across the Yangtze River Delta, China (30°47′N–32°02′N, 119°55′E–121°20′E). We investigated the pathways by which urbanization change ecosystem multifunctionality, including: (1) biotic (such as biodiversity) and abiotic (such as water quality) pathways, (2) taxonomic diversity and functional diversity, and (3) rare species compared to common species. Partial Least Squares Path Modeling revealed that urbanization negatively impacted EMF through both biotic (macroinvertebrate biodiversity) and abiotic (total dissolved solids, salinity, and conductivity) pathways, with the former playing a dominant role. Taxonomic diversity emerged as a stronger positive predictor of EMF than functional diversity. Moreover, the taxonomic diversity was positively correlated with consumer biomass and photosynthetically active radiation and negatively with nutrient concentration. We further showed stronger effects of rare than common species in maintaining EMF. Our study fills a gap in the mechanistic understanding of river ecosystem multifunctionality in plain river networks under urbanization and informs strategies for sustainable urban development. We recommend that conservation efforts in urban areas should prioritize the protection of taxonomic diversity and rare species of macroinvertebrates.","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"5 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145241241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Luz Amadei Martínez, Koen Sabbe, Michael Fettweis, Xavier Desmit, Yves Israel, Wout Bakker, Renaat Dasseville, Sofie D'hondt, Ilse Daveloose, Tine Verstraete, Peter Chaerle, Natacha Brion, Tom Maris, Wim Vyverman
{"title":"Phytoplankton enhances the flocculation of suspended particulate matter in a turbid estuary","authors":"Luz Amadei Martínez, Koen Sabbe, Michael Fettweis, Xavier Desmit, Yves Israel, Wout Bakker, Renaat Dasseville, Sofie D'hondt, Ilse Daveloose, Tine Verstraete, Peter Chaerle, Natacha Brion, Tom Maris, Wim Vyverman","doi":"10.1002/lno.70216","DOIUrl":"https://doi.org/10.1002/lno.70216","url":null,"abstract":"Over the past decades, improvements in water quality—particularly increased oxygen and reduced nitrogen concentrations—have led to changes in phytoplankton biomass and community composition in the Schelde estuary, a macrotidal estuary in Belgium/SW Netherlands. We argue that these changes have affected SPM dynamics by modifying floc stability and size. Seasonal and spatial variability in SPM flocculation dynamics were examined using water samples collected monthly from December 2021 to December 2022 at five stations in the freshwater and brackish tidal reaches of the estuary. In a custom‐built flocculation chamber, these samples were first subjected to a high turbulent shear rate (45 s<jats:sup>−1</jats:sup>) to break the flocs, followed by a lower shear rate (20 s<jats:sup>−1</jats:sup>) that promoted aggregation for 120 min. Floc size distribution changes were analyzed to determine key flocculation parameters, in particular, equilibrium floc size (<jats:italic>D</jats:italic><jats:sub><jats:italic>e</jats:italic></jats:sub>), and flocculation speed (<jats:italic>V</jats:italic><jats:sub><jats:italic>f</jats:italic></jats:sub>). Using generalized additive models, we assessed the influence of seasonal, spatial, environmental, and biotic factors on <jats:italic>D</jats:italic><jats:sub><jats:italic>e</jats:italic></jats:sub> and <jats:italic>V</jats:italic><jats:sub><jats:italic>f</jats:italic></jats:sub>. Unlike in the brackish stations, the freshwater stations displayed clear seasonal patterns in flocculation dynamics, with <jats:italic>D</jats:italic><jats:sub><jats:italic>e</jats:italic></jats:sub> and <jats:italic>V</jats:italic><jats:sub><jats:italic>f</jats:italic></jats:sub> increasing in spring and summer. The strong positive correlations between <jats:italic>D</jats:italic><jats:sub><jats:italic>e</jats:italic></jats:sub>, <jats:italic>V</jats:italic><jats:sub><jats:italic>f</jats:italic></jats:sub>, and Chl <jats:italic>a</jats:italic>, as well as between <jats:italic>V</jats:italic><jats:sub><jats:italic>f</jats:italic></jats:sub> and phytoplankton‐derived particulate organic carbon, suggest that phytoplankton plays a key role in the flocculation process. Transparent exopolymer particles (TEP), which because of their sticky properties can promote particle coagulation, were only weakly correlated with enhanced flocculation, suggesting that TEP properties may be affected by factors such as its specific composition, age, and remineralization.","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"107 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145234989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Income and capital breeding","authors":"Mads Schultz, Marvin Choquet, Malin Daase, Galice Hoarau","doi":"10.1002/lno.70209","DOIUrl":"https://doi.org/10.1002/lno.70209","url":null,"abstract":"Copepods of the genus <jats:italic>Calanus</jats:italic> are key species in the energy transfer from primary producers to higher trophic levels in Arctic and sub‐Arctic seas. The timing of reproduction can differ between species, depending on whether they rely on external energy sources to initiate reproduction (income breeders) or use internal energy sources (capital breeders), or both. The high morphological similarity among species, especially when co‐occurring in sympatry, has limited the reliability of species‐specific conclusions on life history traits in previous studies relying on morphological identification only. Here, we applied molecular species identification to reliably compare breeding strategies among co‐occurring <jats:italic>Calanus hyperboreus</jats:italic>, <jats:italic>Calanus glacialis</jats:italic>, and <jats:italic>Calanus finmarchicus</jats:italic> in a northern Norwegian fjord. Lipid content of adult females was measured with high temporal resolution over an entire annual cycle, and the presence of nauplii was determined for each species. <jats:italic>Calanus hyperboreus</jats:italic> and <jats:italic>C. glacialis</jats:italic> were found to be strict capital breeders, whereas <jats:italic>C. finmarchicus</jats:italic> acted as an income breeder.","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"10 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145209736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mathew Wells, Tim Johnson, Rylie Robinson, Jon Midwood, Yulu Shi, Sarah Larocque, Adam Eddie, Brian O'Malley, Kyle Morton, Dimitry Gorsky, Bruce Tufts
{"title":"Unique thermal mixing patterns in Lake Ontario revealed by novel year‐round observations of thermal stratification","authors":"Mathew Wells, Tim Johnson, Rylie Robinson, Jon Midwood, Yulu Shi, Sarah Larocque, Adam Eddie, Brian O'Malley, Kyle Morton, Dimitry Gorsky, Bruce Tufts","doi":"10.1002/lno.70215","DOIUrl":"https://doi.org/10.1002/lno.70215","url":null,"abstract":"Year‐round records of thermal stratification in the Great Lakes are rare, and there are few observations of thermal stratification during winter. In this paper, we analyze temperature data from 13 temperature logger chains and from over 130 benthic acoustic receivers that were deployed across Lake Ontario for 2 yr. The timing and duration of the fall overturn correlate with the local average water depth, and shallow sites (< 50 m depth) overturn up to a month before deep sites (> 100 m depths). Likewise, in spring, the shallow sites warm faster. Lake Ontario has partial ice cover, so wind‐driven mixing stirs the water column throughout winter, and inverse thermal stratification is largely absent. The depth‐averaged winter water temperatures vary between 0°C and 4°C, with the coldest temperatures (near 0.1°C) found in the shallow Kingston basin and warmest temperatures (near 4°C) at sites near the 244 m deep Rochester Basin. Lake Ontario appears to be a warm monomictic lake, rather than having a dimictic mixing pattern as previously described—there is no sustained ice cover or inverse stratification that inhibits vertical mixing in winter. Winter is a poorly understood season for many aquatic processes, including fish bioenergetics, fish distribution, biochemical processes, invertebrate distribution, and production. Moreover, the lack of knowledge of winter has hampered the use of correct initial conditions for running large lake hydrodynamic models.","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"20 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145195078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Per‐Olav Moksnes, Kerstin Fransson, Marlene Jahnke, Per R. Jonsson
{"title":"Planktonic larval stages—an adaptation to lower predation rates in the pelagic environment?","authors":"Per‐Olav Moksnes, Kerstin Fransson, Marlene Jahnke, Per R. Jonsson","doi":"10.1002/lno.70217","DOIUrl":"https://doi.org/10.1002/lno.70217","url":null,"abstract":"A majority of marine benthic macroinvertebrate and fish species have planktonic larval stages that disperse in the water column from days to months. However, the adaptive significance of pelagic larvae, and whether predation is higher in the pelagic or the benthic environment, is still debated, partly due to a lack of studies assessing larval predation in offshore, pelagic habitats. Here we assess predation mortality on shore crab megalopae (<jats:italic>Carcinus maenas</jats:italic>) using tethering techniques in the eastern North Sea, comparing diel differences in predation rates in five different benthic and pelagic habitats, tethering close to 900 megalopae over a 2‐year period. Our results showed that relative predation rates on shore crab megalopae were up to 10 times higher in shallow benthic nursery habitats (0.5–4 m depth; 23–58% 6 h<jats:sup>−1</jats:sup>) compared to nearshore and offshore pelagic habitats (10–100 m depth; 5–7% 6 h<jats:sup>−1</jats:sup>). This pattern was consistent both during day and night conditions in both years, and also in a 24‐h experiment when the periods of dusk and dawn were included. The higher predation rates in shallow benthic areas were likely a direct effect of an estimated 3 to 4 orders of magnitude higher abundance of potential predators in this habitat compared to the pelagic environment. By demonstrating an order of magnitude lower predation rates in a pelagic offshore environment for the first time, the study provides new support that planktonic larvae may be an adaptation to use pelagic environments as a spatial refuge from high predation rates in shallow nursery habitats.","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"71 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145195061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Long‐term changes in intra‐ and interspecific trait variability of a small herbivore in a deep perialpine lake","authors":"Marjohn Yucada Baludo, Dietmar Straile","doi":"10.1002/lno.70218","DOIUrl":"https://doi.org/10.1002/lno.70218","url":null,"abstract":"Analyses of trait dynamics provide new insights into the dynamics of communities and ecosystems. While zooplankton traits—and especially the defensive traits—of zooplankton are well studied in the laboratory, there are hardly any studies analyzing long‐term dynamics of zooplankton traits. Here, we study species turnover and trait dynamics of three species of the genus <jats:italic>Bosmina</jats:italic>, <jats:italic>Bosmina coregoni</jats:italic>, <jats:italic>Bosmina longispina</jats:italic>, and <jats:italic>Bosmina longirostris</jats:italic>, at the genus and species levels during three decades of environmental changes in Lake Constance. We showed that <jats:italic>Bosmina</jats:italic> species turnover substantially influenced genus‐level body size distributions and key defensive traits, including mucro and antennule sizes. Results also showed that mean species traits more effectively predicted genus‐level traits when interspecies trait differences were large, making them particularly reliable in species‐rich contexts. In contrast, when trait differences among species were small, intraspecific variations may obscure genus‐level temporal patterns. In addition, we found within‐species trait changes that partially paralleled those observed at the genus level, but also within‐species trait changes that partially differed from those observed at the genus level. While a large reduction of nutrients during two decades appeared not to be strongly associated with changes in <jats:italic>Bosmina</jats:italic> species composition and trait dynamics, large and rapid species turnover and trait changes coincided with 7 yr of increased stickleback densities in the pelagic zone of the lake.","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"5 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145188354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Catherine Bannon, Patrick L. White, Elden Rowland, Kiran J. More, Anna Gleason, Megan Roberts, Emmanuel Devred, Lindsay Beazley, Julie LaRoche, Erin M. Bertrand
{"title":"Seasonal patterns in B‐vitamins and cobalamin co‐limitation in the Northwest Atlantic","authors":"Catherine Bannon, Patrick L. White, Elden Rowland, Kiran J. More, Anna Gleason, Megan Roberts, Emmanuel Devred, Lindsay Beazley, Julie LaRoche, Erin M. Bertrand","doi":"10.1002/lno.70204","DOIUrl":"https://doi.org/10.1002/lno.70204","url":null,"abstract":"B‐vitamins are important co‐enzymes that have long been hypothesized to play key roles in marine ecosystems. However, environmental measurements remain scarce, which limits our understanding of their potential impact. Here, we present mass spectrometry‐based measurements of B‐vitamins (B<jats:sub>1</jats:sub>, B<jats:sub>2</jats:sub>, B<jats:sub>3</jats:sub>, B<jats:sub>5</jats:sub>, B<jats:sub>6</jats:sub>, B<jats:sub>12</jats:sub>) and related vitamers along a transect in the Northwest Atlantic Ocean, in both particulate phase and dissolved in seawater, seasonally over 5 yr. We then couple these data with targeted investigations of the impact of B<jats:sub>12</jats:sub> (cobalamin) on phytoplankton growth. We show that these metabolites are present at femto‐ to pico‐molar concentrations and demonstrate that season explains most variance in particulate phase B‐vitamins but not dissolved, offering further evidence that metabolite inventories in these two phases are often decoupled. We find positive correlations between particulate organic carbon with particulate B<jats:sub>1</jats:sub> and B<jats:sub>3</jats:sub>, and between chlorophyll <jats:italic>a</jats:italic> and particulate B<jats:sub>2</jats:sub> and 5,6‐dimethylbenzimidazole in fall but not spring, indicating unique seasonal drivers of vitamin inventories. Of all measured vitamins, only cobalamin was enriched in the particulate over dissolved phase, predominantly in spring. We documented nitrogen and cobalamin co‐limitation of phytoplankton growth during spring bloom decline, when dissolved cobalamin is seemingly drawn down, but not during fall, when dissolved cobalamin concentrations remain elevated. These seasonal differences may be underpinned by the increased importance of cobalamin remodeling and recycling during the fall. This study provides insights into the absolute concentrations, stoichiometry, and variability of B‐vitamins in the ocean and offers evidence that cobalamin exerts seasonally varying controls on Northwest Atlantic marine ecosystems.","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"74 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145153853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Marco Fernandez, Joel C. Trexler, Colin J. Saunders, Judson W. Harvey, Nathan J. Dorn
{"title":"Discharge and nutrients interact to determine trophic structure in a wetland: Evidence from a landscape‐scale manipulation","authors":"Marco Fernandez, Joel C. Trexler, Colin J. Saunders, Judson W. Harvey, Nathan J. Dorn","doi":"10.1002/lno.70211","DOIUrl":"https://doi.org/10.1002/lno.70211","url":null,"abstract":"Identifying drivers of consumer biomass patterns and community structure is complex for managed freshwater ecosystems that are sensitive to nutrients and drought. In the Florida Everglades, flow restoration is expected to reintroduce discharge across an expansive wetland, yet most research on consumers has focused on water depth and dry disturbances. Low‐velocity flow can mediate nutrient availability for basal food resources, but its scaled‐up effects on consumer communities remain largely untested. We quantified consumer responses to a landscape‐scale flow manipulation that created discharge variability along a 2.5‐km path of interconnected shallow sloughs. Over 4 yr, we repeatedly sampled macroinvertebrates, small fishes, and large predatory fishes (standard length > 8 cm) in 26 sloughs—some along a flow path experiencing pulsed water releases and others in two non‐flowing reference areas. We tested the effects of antecedent discharge on consumer biomass while accounting for local nutrient concentrations (total phosphorus). Discharge increased biomass across all consumer groups, particularly in oligotrophic sloughs. Conversely, eutrophic sloughs demonstrated stronger top‐down effects on small fishes and macroinvertebrates, with discharge primarily benefiting large predatory fishes. Nutrient gradients preferentially increased large fishes and caused macroinvertebrate community shifts favoring herbivorous and possibly predation‐resistant taxa. Structural equation modeling similarly indicated bottom‐up support from discharge but stronger top‐down control in nutrient‐rich sloughs. These findings demonstrate that discharge and total phosphorus interactively produce distinct consumer biomass patterns. Flow restoration in oligotrophic Everglades sloughs is hypothesized to enhance aquatic consumer biomass across trophic levels, revealing an ecological benefit to slow‐flowing ecosystems not previously recognized.","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"12 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145133729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Correction to “The contrasting roles of aquatic fungi and oomycetes in the degradation and transformation of polymeric organic matter”","authors":"","doi":"10.1002/lno.70210","DOIUrl":"https://doi.org/10.1002/lno.70210","url":null,"abstract":"","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"8 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Iron physiology and metabolism of model phytoplankton taxa in a western boundary continental shelf ecosystem","authors":"Lucy E. Quirk, William G. Sunda, Natalie R. Cohen","doi":"10.1002/lno.70206","DOIUrl":"https://doi.org/10.1002/lno.70206","url":null,"abstract":"Continental shelf ecosystems support diverse phytoplankton communities that contribute to global primary productivity. Iron is an important micronutrient controlling the growth of marine phytoplankton, but its role in influencing phytoplankton ecophysiology in western boundary continental shelf ecosystems is understudied. To examine iron physiology between shelf regions, representative diatoms (<jats:italic>Cylindrotheca closterium</jats:italic>) and coccolithophores (<jats:italic>Gephyrocapsa oceanica</jats:italic> and <jats:italic>Gephyrocapsa huxleyi</jats:italic>) collected from the relatively iron‐rich inner shelf and lower iron outer shelf of the South Atlantic Bight were grown under high and low iron conditions. The specific growth rates, photophysiology, and gene expression patterns were investigated. The diatoms employed strategies that enable success across shelf zones, including high maximum growth rates. Their high photoprotective capacity likely contributed to maintaining maximum potential quantum efficiency of photosystem II (<jats:italic>F</jats:italic><jats:sub>v</jats:sub>/<jats:italic>F</jats:italic><jats:sub>m</jats:sub>) and short <jats:italic>Q</jats:italic><jats:sub>a</jats:sub> reoxidation times (<jats:italic>τQ</jats:italic><jats:sub>a</jats:sub>) under iron limitation. In contrast, the coccolithophore isolates demonstrated metabolic strategies suited to conditions of the shelf region from which they originated. The growth of the inner‐shelf <jats:italic>G. oceanica</jats:italic> was decreased by 71% in low iron media, while that of outer‐shelf <jats:italic>G. huxleyi</jats:italic> was decreased by only 35%, indicating a lower sensitivity to iron limitation. The physiological and metabolic patterns reported here may help explain observed phytoplankton community composition and bloom succession patterns in western boundary continental shelf ecosystems.","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"43 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145088916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}