Showing 1 - 20 results of 23 for search '"trophic level"', query time: 0.07s Refine Results
  1. 1

    A systematic review of fishing impacts on the trophic level of fish populations and assemblages in the Mediterranean Sea by Audrey Marguin, Audrey Marguin, Simona Bussotti, Simona Bussotti, Paolo Guidetti, Paolo Guidetti, Francesca Rossi, Francesca Rossi

    Published 2025-08-01
    “…Fishing activities alter food web diversity and functioning. Trophic level (TL) has been used as an indicator to assess such impacts on populations and assemblages. …”
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    TROPHODYNAMICS OF MARINE ORGANISMS IN THE EPIPELAGIC LAYER OF THE OKHOTSK SEA IN 2000S by K. M. Gorbatenko, I. V. Melnikov

    Published 2019-09-01
    “…In carbon units, 831.0 . 106 tC was produced annually in the Okhotsk Sea at the first trophic level, 177.4 . 106 tC at the second trophic level, 18.1 . 106 tC at the third trophic level, 0.74 . 106 tC at the fourth trophic level, and 0.016 . 106 tC at the fifth trophic level. …”
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    Dynamics of trophic structure for the epipelagic community in the western Bering Sea by Alexander V. Zavolokin, Vladimir I. Radchenko, Vladimir V. Kulik

    Published 2014-12-01
    “…Now the salmons are the only numerous predator group of the fourth trophic level in the upper pelagic layer of offshore waters in the western Bering Sea. …”
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    Effects of globa l warming on insect natural enemies by BAI Yueliang, ZHOU Wenwu, ZHU Zengrong

    Published 2022-06-01
    “…However, many studies have suggested that the species at higher trophic levels seem to be more sensitive to changes in environmental factors, meaning that predators and parasitoids may face more severe challenges than their prey or hosts. …”
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    Temperature and CO2 alter trophic structure of Arctic plankton assemblages by Koji Sugie, Bingzhang Chen, Shigeto Nishino, Toru Hirawake

    Published 2025-08-01
    “…Abstract Driven by increasing anthropogenic CO2, the impact of ongoing climate change on the marine plankton ecosystem ultimately extends to higher trophic levels and the biogeochemical cycling of carbon and nutrients. …”
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    Supporting resilience-based coral reef management using broadscale threshold approaches by April J. Burt, Anna Koester, Nancy Bunbury, Philip Haupt, Rowana Walton, Frauke Fleischer-Dogley, Karen M. Chong-Seng

    Published 2025-07-01
    “…This study assesses reef condition at Aldabra Atoll, a remote MPA in the western Indian Ocean, relative to broadscale thresholds for structural complexity, fish biomass, herbivore biomass, juvenile coral density, and trophic-level fish biomass. Results were synthesized into a resilience index, and sites were classified into ‘management strategies’ using a published reef management framework. …”
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    Nitrogen Isotopes Suggest Sex‐Based Diet Differences on the Breeding Grounds for a Sexually Monomorphic Migratory Passerine by Autumn R. Iverson, Renée L. Cormier, Diana L. Humple, Thomas P. Hahn, Jessica Schaefer, Elisha M. Hull, Walter H. Sakai, Samuelle Simard‐Provençal

    Published 2025-07-01
    “…We infer that females may be foraging on more food items from a higher trophic level than males on breeding grounds, which may reflect a physiological need to replace lost nutrients from nesting. …”
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    Comprehensive Assessment of Water Quality of China’s Largest Freshwater Lake Under the Impact of Extreme Floods and Droughts by Zhiyu Mao, Junxiang Cheng, Ligang Xu, Mingliang Jiang, Hailin You

    Published 2025-07-01
    “…This study evaluated the water quality of Poyang Lake in a recent 10-year span by the water quality index (WQI), trophic level index (TLI) and a newly constructed comprehensive evaluation index, and it analyzed the trend of water quality change under extreme events. …”
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    Parasite community of the pelagic thresher Alopias pelagicus (Lamniformes) as additional indicator of trophic network status and functioning by Mario Santoro, Flavia Occhibove, Luigi Maria Cusano, Marialetizia Palomba, Bernald Pacheco-Chaves, José Miguel Carvajal-Rodríguez, Monica Monge-Amador, Alicia Rojas, Alberto Solano-Barquero

    Published 2025-07-01
    “…Our findings supported the use of parasite communities in high trophic level predators as reliable and effective indicators of the trophic network status, advocating for their inclusion as an additional tool in biodiversity conservation.…”
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    Origin Traceability of Chinese Mitten Crab (<i>Eriocheir sinensis</i>) Using Multi-Stable Isotopes and Explainable Machine Learning by Danhe Wang, Chunxia Yao, Yangyang Lu, Di Huang, Yameng Li, Xugan Wu, Weiguo Song, Qinxiong Rao

    Published 2025-07-01
    “…This analysis highlighted the crucial role of environmental factors, such as water source, diet, and trophic level, in origin discrimination and demonstrated that isotopic characteristics of different tissues provide unique discriminatory information. …”
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    Ecological trade-offs in shallow lake restoration: Assessing ecosystem responses to aquatic vegetation restoration and biomanipulation strategies against the background of fishing... by Tianpeng Chen, Shuo Feng, Yangcun Xie, Kening Wang, Xiaohui Wang, Jinyong Zhao, Jing Zhang

    Published 2025-09-01
    “…Therefore, under closed-fishing scenarios, the targeted introduction of high-trophic-level carnivorous fish represents a more cost-effective strategy for ecological regulation.…”
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    Spatiotemporal variability in the feeding habits of anchovy and sardine: a comparison of upwelling and river-runoff driven ecosystems by Paola Rumolo, Marco Barra, Angelo Bonanno, Simona Altieri, Rosalia Ferreri, Antonella Gargano, Gualtiero Basilone, Serena Gherardi, Simona Genovese, Maria Rosa Di Cicco, Carmine Lubritto

    Published 2025-08-01
    “…European sardine (Sardina pilchardus) and anchovy (Engraulis encrasicolus) are important components of marine food webs, acting as trophic links between primary consumers and higher trophic levels. However, local factors—such as environmental conditions, human activities, coastal pollution, and more generally, climate change have had a significant impact on their trophic interactions, affecting the energy flow, structure, and function of the marine ecosystems in which they live. …”
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    Trophodynamics of nekton communities in the epipelagic layer of the North-West Pacific in summer and winter seasons by Svetlana V. Naydenko, Alexey A. Khoruzhiy

    Published 2017-03-01
    “…In these cases, new components were involved in the food web and energy flows between the low and upper trophic levels were changed, in the first place concerning to copepods, then to euphausiids, amphipods, and small-sized nekton prey. …”
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    Urban waterbirds shifting microplastics by Pathissery John Sarlin, Sandie Morris, Savio Morris, Polycarp Joseph, Sancia Morris

    Published 2025-09-01
    “…Plastic pollution in aquatic ecosystems poses growing ecological risks, particularly for piscivorous birds occupying higher trophic levels. This study assessed the ingestion and excretion patterns of microplastics (MPs) in two monotypic urban inland waterbird species, the Indian cormorant (Phalacrocorax fuscicollis) and the Oriental darter (Anhinga melanogaster), from Alappuzha, Kerala, a densely populated region with high urban runoff. …”
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    Comparative study of ontogenetic trophic transition in large yellow croaker from Hong Kong and Taiwan using metabarcoding and isotope analysis by Hei-Ching Wong, Chun-Ming How, Leyi Xi, Chien-Hsiang Lin, Ming-Tsung Chung, Jian-Wen Qiu, Chris Kong-Chu Wong, Kelly Su, Jill Man-Ying Chiu

    Published 2025-08-01
    “…In the more disrupted waters of Hong Kong, disrupted ontogenetic trophic transitions were observed, as adults exhibited unexpectedly low stable nitrogen isotope values, indicating prolonged consumption of prey at low trophic levels. In contrast, the relatively less impacted waters of Taiwan showed normal ontogenetic trophic transition. …”
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    Soil community history strengthens belowground multitrophic functioning across plant diversity levels in a grassland experiment by Angelos Amyntas, Nico Eisenhauer, Stefan Scheu, Bernhard Klarner, Krassimira Ilieva-Makulec, Anna-Maria Madaj, Benoit Gauzens, Jingyi Li, Anton M. Potapov, Benjamin Rosenbaum, Leonardo Bassi, Pamela Medina van Berkum, Ulrich Brose

    Published 2024-11-01
    “…Abstract Biodiversity experiments revealed that plant diversity loss can decrease ecosystem functions across trophic levels. To address why such biodiversity-function relationships strengthen over time, we established experimental mesocosms replicating a gradient in plant species richness across treatments of shared versus non-shared history of (1) the plant community and (2) the soil fauna community. …”
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    Modeling Population Dynamics and Assessing Ecological Impacts of Lampreys via Sex Ratio Regulation by Ruohan Wang, Youxi Luo, Hanfang Li, Chaozhu Hu

    Published 2025-07-01
    “…Using the Lotka–Volterra equations, we investigated how sex ratios affect trophic levels both upstream and downstream of lampreys in the food web. …”
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