Pub Date : 2024-11-07DOI: 10.1016/j.marpolbul.2024.117229
Finbarr G. O'Neill, Morteza Eighani, Esther Savina
The penetration of towed fishing gears into the seabed is directly related to contact drag, fuel consumption, habitat alteration and to the depletion of benthic fauna. Hence, is an important parameter in relation to the environmental and ecological impact of towed demersal fishing gears.
Here, we use a benthic sledge to tow bottom contacting gear components across soft sediment substrates and make high resolution measurements of their penetration, while the impact is taking place. We demonstrate that penetration increases on softer sediments, with increased pressure forces and with higher aspect ratio, and decreases with faster towing speeds.
These results provide a better understanding of the impact of towed demersal fishing gears and will improve assessment methods, increase the accuracy and resolution of ecological indicators and will contribute to the identification of mitigation measures that will lead to the design of low impacting, fuel efficient gears of reduced drag.
{"title":"Sediment penetration by towed, seabed-contacting, fishing gear components","authors":"Finbarr G. O'Neill, Morteza Eighani, Esther Savina","doi":"10.1016/j.marpolbul.2024.117229","DOIUrl":"10.1016/j.marpolbul.2024.117229","url":null,"abstract":"<div><div>The penetration of towed fishing gears into the seabed is directly related to contact drag, fuel consumption, habitat alteration and to the depletion of benthic fauna. Hence, is an important parameter in relation to the environmental and ecological impact of towed demersal fishing gears.</div><div>Here, we use a benthic sledge to tow bottom contacting gear components across soft sediment substrates and make high resolution measurements of their penetration, while the impact is taking place. We demonstrate that penetration increases on softer sediments, with increased pressure forces and with higher aspect ratio, and decreases with faster towing speeds.</div><div>These results provide a better understanding of the impact of towed demersal fishing gears and will improve assessment methods, increase the accuracy and resolution of ecological indicators and will contribute to the identification of mitigation measures that will lead to the design of low impacting, fuel efficient gears of reduced drag.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"209 ","pages":"Article 117229"},"PeriodicalIF":5.3,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142605178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-07DOI: 10.1016/j.marpolbul.2024.117238
C. Manno , I. Corsi , E. Rowlands , E. Bergami
The Antarctic krill (Euphausia superba) play a critical role in promoting the so-called “blue carbon pathway” by producing a large amount of fast-sinking faecal pellets (FPs) which facilitate the transport of CO2 through the water column. Here we assess how exposure to negatively (PS-COOH) and positively (PS-NH2) charged polystyrene nanoparticles, impacts degradation of krill FPs (i.e. change in peritrophic membrane state, Carbon concentration and Carbon/Nitrogen ratio). Our findings suggest that exposure of nanoplastics, particularly negatively charged particles, increases krill FP degradation. This can result in a potential loss of FP-sequestrated C of up to 27 %, equivalent to up 5.5 Mt. C per productive season (Spring-early Autumn). This study provides new insights into how increasing levels of plastic pollution could affect the natural capital provided by krill FPs. The effect of this emerging anthropogenic contaminant should be considered by international policies focused on climate change mitigation and adaptation.
{"title":"Plastics counteract the ability of Antarctic krill to promote the blue carbon pathway in the deep ocean","authors":"C. Manno , I. Corsi , E. Rowlands , E. Bergami","doi":"10.1016/j.marpolbul.2024.117238","DOIUrl":"10.1016/j.marpolbul.2024.117238","url":null,"abstract":"<div><div>The Antarctic krill (<em>Euphausia superba</em>) play a critical role in promoting the so-called “blue carbon pathway” by producing a large amount of fast-sinking faecal pellets (FPs) which facilitate the transport of CO<sub>2</sub> through the water column. Here we assess how exposure to negatively (PS-COOH) and positively (PS-NH<sub>2</sub>) charged polystyrene nanoparticles, impacts degradation of krill FPs (i.e. change in peritrophic membrane state, Carbon concentration and Carbon/Nitrogen ratio). Our findings suggest that exposure of nanoplastics, particularly negatively charged particles, increases krill FP degradation. This can result in a potential loss of FP-sequestrated C of up to 27 %, equivalent to up 5.5 Mt. C per productive season (Spring-early Autumn). This study provides new insights into how increasing levels of plastic pollution could affect the natural capital provided by krill FPs. The effect of this emerging anthropogenic contaminant should be considered by international policies focused on climate change mitigation and adaptation.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"209 ","pages":"Article 117238"},"PeriodicalIF":5.3,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142605176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-07DOI: 10.1016/j.marpolbul.2024.117193
Leonardo Romero-Martínez , Cees van Slooten , Michiel van Harten , Enrique Nebot , Louis Peperzak
Compliance Monitoring Devices (CMDs) are instruments indicating if the 10–50 μm organism abundance in ballast water complies with the International Maritime Organizations' discharge standard. For that, they trade the presumed accuracy of detailed methods for speed and simplicity. In an experiment using UV-treated water, four CMDs were compared, using a Cohen's kappa analysis (ISO 3725), with two detailed methods: Fluorescence Microscopy (FM) and the Most Probable Number (MPN). Of two CMDs, BallastWISE and B-QUA ATP, the standard (non)-compliance limits were adapted. Correlated to FM (non)-compliance results, ranking resulted in: 1) BallastWISE, 2) MPN, 3) Ballast-Check-2 and 4) WALZ-PAM. The ATP method had too few data for this ranking. MPN proved problematic: the abundance of 10–50 μm organism decreased while that <10 μm organisms increased. It is concluded that in case of UV-treatment, the outcome of CMD-validations will depend on the detailed method, the CMD instrument, and the (non)-compliance limits chosen.
{"title":"Comparative assessment of four ballast water compliance monitoring devices with natural UV-treated water using IMO's monitoring approaches","authors":"Leonardo Romero-Martínez , Cees van Slooten , Michiel van Harten , Enrique Nebot , Louis Peperzak","doi":"10.1016/j.marpolbul.2024.117193","DOIUrl":"10.1016/j.marpolbul.2024.117193","url":null,"abstract":"<div><div>Compliance Monitoring Devices (CMDs) are instruments indicating if the 10–50 μm organism abundance in ballast water complies with the International Maritime Organizations' discharge standard. For that, they trade the presumed accuracy of detailed methods for speed and simplicity. In an experiment using UV-treated water, four CMDs were compared, using a Cohen's kappa analysis (ISO 3725), with two detailed methods: Fluorescence Microscopy (FM) and the Most Probable Number (MPN). Of two CMDs, BallastWISE and B-QUA ATP, the standard (non)-compliance limits were adapted. Correlated to FM (non)-compliance results, ranking resulted in: 1) BallastWISE, 2) MPN, 3) Ballast-Check-2 and 4) WALZ-PAM. The ATP method had too few data for this ranking. MPN proved problematic: the abundance of 10–50 μm organism decreased while that <10 μm organisms increased. It is concluded that in case of UV-treatment, the outcome of CMD-validations will depend on the detailed method, the CMD instrument, and the (non)-compliance limits chosen.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"209 ","pages":"Article 117193"},"PeriodicalIF":5.3,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142605091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-07DOI: 10.1016/j.marpolbul.2024.117219
Federico Pinna , Federica Ragazzola , Luigi Piazzi , David Evans , Jacek Raddatz , Giulia Ceccherelli
Rising pressures from local and global stressors on marine benthic habitats require understanding of their effects on habitat forming species like Crustose Coralline Algae (CCA), which play a crucial role in ecosystem diversity and structure. Here, the impact of mechanical damage and warming on the CCA species Lithophyllum stictiforme was investigated in the Mediterranean Sea using a manipulative field transplant experiment that takes advantage of temperature variations between depths of 35 m and 15 m as proxies for current and future climate scenarios. A significant effect of mechanical damage and warming on the growth angle of the thalli was detected, while no interactive effects on the other biological traits were observed. Higher temperatures increased Mg/Ca ratio in untouched thalli, but mechanical damage disrupted this pattern in broken samples. Overall, our findings highlight the resilience of thalli to warming but demonstrate suffering from mechanical damage, underlining the need for effective benthic habitat management.
局部和全球压力因素对海洋底栖栖息地造成的压力不断增加，需要了解这些压力因素对形成栖息地的物种（如甲壳纲珊瑚藻（CCA））的影响，这些物种在生态系统多样性和结构中发挥着至关重要的作用。在此，研究人员利用 35 米深和 15 米深之间的温度变化作为当前和未来气候情景的代用指标，通过操纵性野外移植实验研究了地中海机械损伤和气候变暖对 CCA 物种 Lithophyllum stictiforme 的影响。实验发现，机械损伤和升温对蓟马的生长角度有明显影响，但对其他生物特征没有交互影响。温度升高会增加未受损伤的毛丛中的镁/钙比率，但机械损伤会破坏破碎样本中的这一模式。总之，我们的研究结果突显了毛鳞茎对气候变暖的适应能力，但也显示了机械损伤对其造成的影响，这强调了对底栖生物栖息地进行有效管理的必要性。
{"title":"Crustose coralline algae exhibit complex responses to breakage under current and future climate scenarios","authors":"Federico Pinna , Federica Ragazzola , Luigi Piazzi , David Evans , Jacek Raddatz , Giulia Ceccherelli","doi":"10.1016/j.marpolbul.2024.117219","DOIUrl":"10.1016/j.marpolbul.2024.117219","url":null,"abstract":"<div><div>Rising pressures from local and global stressors on marine benthic habitats require understanding of their effects on habitat forming species like Crustose Coralline Algae (CCA), which play a crucial role in ecosystem diversity and structure. Here, the impact of mechanical damage and warming on the CCA species <em>Lithophyllum stictiforme</em> was investigated in the Mediterranean Sea using a manipulative field transplant experiment that takes advantage of temperature variations between depths of 35 m and 15 m as proxies for current and future climate scenarios. A significant effect of mechanical damage and warming on the growth angle of the thalli was detected, while no interactive effects on the other biological traits were observed. Higher temperatures increased Mg/Ca ratio in untouched thalli, but mechanical damage disrupted this pattern in broken samples. Overall, our findings highlight the resilience of thalli to warming but demonstrate suffering from mechanical damage, underlining the need for effective benthic habitat management.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"209 ","pages":"Article 117219"},"PeriodicalIF":5.3,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142605103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-06DOI: 10.1016/j.marpolbul.2024.117212
Izabella Almirante Porto Tiburcio Rodrigues , Milena Ceccopieri , Rodrigo Chiclana , Letícia Tessaro , Regina Fonseca Almeida , Diana Moreira , Carlos German Massone
This research aimed to assess the potential of emerging contaminants as environmental quality indicators for short-term monitoring programs, in contrast with traditional contaminants. Thirteen sediment samples from from Piratininga, a coastal lagoon subjected to anthropogenic impact, were analyzed for the following compounds: napropamide, diclofenac, naproxen, triclosan, ibuprofen, 17β-estradiol, bisphenol A, nadolol, ethofibrate and carbamazepine. The developed method, which included solid phase extraction, derivatization, and analysis by gas chromatography–mass spectrometry, demonstrated robustness and suitability with quantification limits between 0.32 and 1.49 ng g−1. The concentrations of etofibrate, nadolol, napropamide and diclofenac were below the quantification limits for all the analyzed samples. The highest concentration was reported for bisphenol A (4.76 ± 0.44 ng g−1), followed by 17β-estradiol (2.88 ± 0.65 ng g−1), ibuprofen (2.70 ± 1.67 ng g−1) and triclosan (1.5 ± 0.43 ng g−1). The detected concentrations, spatial distribution, and local climatic conditions with distinct dry and wet seasons indicate the feasibility of biannual environmental quality monitoring. By evaluating the concentrations and statistical treatment, the use of contaminants of emerging concern as short-term indicators proved promising, leading to an optimized monitoring program from nine to three compounds (bisphenol A, ibuprofen and triclosan) and a sampling grid reduced from 13 to 4 points.
{"title":"Emerging contaminants as indicators of short-term environmental changes in an eutrophicated coastal lagoon","authors":"Izabella Almirante Porto Tiburcio Rodrigues , Milena Ceccopieri , Rodrigo Chiclana , Letícia Tessaro , Regina Fonseca Almeida , Diana Moreira , Carlos German Massone","doi":"10.1016/j.marpolbul.2024.117212","DOIUrl":"10.1016/j.marpolbul.2024.117212","url":null,"abstract":"<div><div>This research aimed to assess the potential of emerging contaminants as environmental quality indicators for short-term monitoring programs, in contrast with traditional contaminants. Thirteen sediment samples from from Piratininga, a coastal lagoon subjected to anthropogenic impact, were analyzed for the following compounds: napropamide, diclofenac, naproxen, triclosan, ibuprofen, 17β-estradiol, bisphenol A, nadolol, ethofibrate and carbamazepine. The developed method, which included solid phase extraction, derivatization, and analysis by gas chromatography–mass spectrometry, demonstrated robustness and suitability with quantification limits between 0.32 and 1.49 ng g<sup>−1</sup>. The concentrations of etofibrate, nadolol, napropamide and diclofenac were below the quantification limits for all the analyzed samples. The highest concentration was reported for bisphenol A (4.76 ± 0.44 ng g<sup>−1</sup>), followed by 17β-estradiol (2.88 ± 0.65 ng g<sup>−1</sup>), ibuprofen (2.70 ± 1.67 ng g<sup>−1</sup>) and triclosan (1.5 ± 0.43 ng g<sup>−1</sup>). The detected concentrations, spatial distribution, and local climatic conditions with distinct dry and wet seasons indicate the feasibility of biannual environmental quality monitoring. By evaluating the concentrations and statistical treatment, the use of contaminants of emerging concern as short-term indicators proved promising, leading to an optimized monitoring program from nine to three compounds (bisphenol A, ibuprofen and triclosan) and a sampling grid reduced from 13 to 4 points.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"209 ","pages":"Article 117212"},"PeriodicalIF":5.3,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142591106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2024-11-06DOI: 10.1016/j.marpolbul.2024.117240
Miao Xiang , Xuemei Li , Zihao Meng , Nian Wei , Zhouhang Wu , Qiuyan Wang , Shike Gao
Fluctuating Asymmetry (FA) in fish otoliths is an indicator of arbitrarily tiny variations between bilateral otolith characters, and it serves as an effective indicator of growth and developmental differences due to environmental conditions. Due to their unique resident traits, the Coilia brachygnathus can provide a potential insight to the environmental pressure reflected by its otolith FA. In this study, 228 C. brachygnathus from Changhu Lake were examined, assessing the Asymmetric Square Coefficient of Variation (CV2a) across four characters: the length, width, perimeter, and area of the left and right lateral sagittal otoliths. Results showed that otolith length exhibited the lowest CV2a, while otolith perimeter displayed the highest. Although no clear pattern emerged in the change of CV2a with increasing body length for each otolith character, the CV2a of otolith width within the 160–180 mm body length group was significantly higher than that in the 120–140 and 220–240 mm groups. Generally, otolith CV2a within the middle and upper lake sections surpassed that in the open water sections of the lower reaches. Our findings indicated that ontogenetically, variations in C. brachygnathus otolith FA are linked to its feeding and habitat preferences, while the spatial responsiveness of otolith FA to environmental pressure warrants further exploration. Future studies will encompass the collection of otolith FA data from additional Coilia species, with particular emphasis on distinguishing migratory and sedentary Coilia, ultimately enhancing the reliability and precision of environmental pressure assessments in inland waters.
鱼类耳石中的波动不对称（FA）是双侧耳石特征之间任意微小变化的指标，也是环境条件导致生长和发育差异的有效指标。由于腕鳃鲚独特的栖息特征，其耳石的FA可能会反映出环境压力。本研究考察了228尾来自长湖的胭脂鱼，评估了左右侧矢状耳石长度、宽度、周长和面积四个特征的非对称平方变异系数（CV2a）。结果显示，耳石长度的 CV2a 最低，而耳石周长的 CV2a 最高。虽然各耳石特征的 CV2a 随体长的增加没有明显的变化规律，但 160-180 mm 体长组耳石宽度的 CV2a 明显高于 120-140 mm 和 220-240 mm 组。总体而言，中上游湖段的耳石 CV2a 高于下游开阔水域的耳石 CV2a。我们的研究结果表明，在个体发育过程中，胭脂鱼耳石FA的变化与其摄食和栖息地偏好有关，而耳石FA对环境压力的空间响应性值得进一步探讨。未来的研究将包括收集更多鲚鱼种的耳石FA数据，尤其侧重于区分洄游鲚和定居鲚，最终提高内陆水域环境压力评估的可靠性和精确性。
{"title":"Fluctuation asymmetry of otoliths from Coilia brachygnathus in Changhu Lake: A first study in inland waters of China","authors":"Miao Xiang , Xuemei Li , Zihao Meng , Nian Wei , Zhouhang Wu , Qiuyan Wang , Shike Gao","doi":"10.1016/j.marpolbul.2024.117240","DOIUrl":"10.1016/j.marpolbul.2024.117240","url":null,"abstract":"<div><div>Fluctuating Asymmetry (FA) in fish otoliths is an indicator of arbitrarily tiny variations between bilateral otolith characters, and it serves as an effective indicator of growth and developmental differences due to environmental conditions. Due to their unique resident traits, the <em>Coilia brachygnathus</em> can provide a potential insight to the environmental pressure reflected by its otolith FA. In this study, 228 <em>C. brachygnathus</em> from Changhu Lake were examined, assessing the Asymmetric Square Coefficient of Variation (CV<sup>2</sup><sub>a</sub>) across four characters: the length, width, perimeter, and area of the left and right lateral sagittal otoliths. Results showed that otolith length exhibited the lowest CV<sup>2</sup><sub>a</sub>, while otolith perimeter displayed the highest. Although no clear pattern emerged in the change of CV<sup>2</sup><sub>a</sub> with increasing body length for each otolith character, the CV<sup>2</sup><sub>a</sub> of otolith width within the 160–180 mm body length group was significantly higher than that in the 120–140 and 220–240 mm groups. Generally, otolith CV<sup>2</sup><sub>a</sub> within the middle and upper lake sections surpassed that in the open water sections of the lower reaches. Our findings indicated that ontogenetically, variations in <em>C. brachygnathus</em> otolith FA are linked to its feeding and habitat preferences, while the spatial responsiveness of otolith FA to environmental pressure warrants further exploration. Future studies will encompass the collection of otolith FA data from additional Coilia species, with particular emphasis on distinguishing migratory and sedentary Coilia, ultimately enhancing the reliability and precision of environmental pressure assessments in inland waters.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"209 ","pages":"Article 117240"},"PeriodicalIF":5.3,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142591111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2024-11-06DOI: 10.1016/j.marpolbul.2024.117188
José Miguel Almeida , Carla Palma , Pedro M. Félix , Ana C. Brito
Estuaries offer favorable conditions for human settlement. As a result, pollutants, such as metals, have been released to these systems. Those are adsorbed by particulate material that tend to settle at the bottom and sink in the sediment. This article analyses the results of metals in sediments of the Sado estuary (Portugal) on a large spatial scale, to differentiate areas according to their impacts and possible sources. The metals were analyzed by Atomic Absorption Spectroscopy and a Direct Mercury Analyser. Higher concentrations, particularly of As, Cr and Zn ([32, 40] mg/kg, [102, 115] mg/kg, [672, 896] mg/kg) were observed at upstream areas of the Alcácer and Marateca channels. Both anthropogenic and natural origins in the area were considered to understand the results, such as industrial activities and geological context. Overall, the concentrations registered do not reach levels of contamination, and the improvement in the quality of the estuary is reflected.
{"title":"Spatial variation of metal(loid)s in sediments of an Atlantic mesotidal estuary (Sado estuary, Portugal)","authors":"José Miguel Almeida , Carla Palma , Pedro M. Félix , Ana C. Brito","doi":"10.1016/j.marpolbul.2024.117188","DOIUrl":"10.1016/j.marpolbul.2024.117188","url":null,"abstract":"<div><div>Estuaries offer favorable conditions for human settlement. As a result, pollutants, such as metals, have been released to these systems. Those are adsorbed by particulate material that tend to settle at the bottom and sink in the sediment. This article analyses the results of metals in sediments of the Sado estuary (Portugal) on a large spatial scale, to differentiate areas according to their impacts and possible sources. The metals were analyzed by Atomic Absorption Spectroscopy and a Direct Mercury Analyser. Higher concentrations, particularly of As, Cr and Zn ([32, 40] mg/kg, [102, 115] mg/kg, [672, 896] mg/kg) were observed at upstream areas of the Alcácer and Marateca channels. Both anthropogenic and natural origins in the area were considered to understand the results, such as industrial activities and geological context. Overall, the concentrations registered do not reach levels of contamination, and the improvement in the quality of the estuary is reflected.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"209 ","pages":"Article 117188"},"PeriodicalIF":5.3,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142594162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-06DOI: 10.1016/j.marpolbul.2024.117196
Mi-Song Hong , Ji-Su Kim , Yu Ri Jin , Hee Jeong Kim , Jae-Seong Lee , Min-Chul Lee
Reproductive timing in organisms can influence reproductive success and longevity, yet its long-term effects remain underexplored. This study monitored the first- and last-born offspring of Brachionus plicatilis across five generations to examine the impact of breeding timing on fertility and longevity. The last-born group produced more offspring in the F1 and F2 generations. However, the first-born group produced more offspring from the F3 generation onward, with statistically significant differences observed in the F4 generation. Survival analysis indicated no differences up to the F3 generation. However, the post-reproductive period was significantly shorter in the last group compared to the first group in the F3 and F4 generations. These findings suggest that delayed breeding timing cumulatively reduces reproductive output and lifespan, though recovery may occur in the F5 generation. This study provides valuable insights into the generational effects of breeding timing and may inform reproductive strategies in similar species.
{"title":"Multigenerational analysis of reproductive timing and life cycle parameters in the marine rotifer Brachionus plicatilis","authors":"Mi-Song Hong , Ji-Su Kim , Yu Ri Jin , Hee Jeong Kim , Jae-Seong Lee , Min-Chul Lee","doi":"10.1016/j.marpolbul.2024.117196","DOIUrl":"10.1016/j.marpolbul.2024.117196","url":null,"abstract":"<div><div>Reproductive timing in organisms can influence reproductive success and longevity, yet its long-term effects remain underexplored. This study monitored the first- and last-born offspring of <em>Brachionus plicatilis</em> across five generations to examine the impact of breeding timing on fertility and longevity. The last-born group produced more offspring in the F1 and F2 generations. However, the first-born group produced more offspring from the F3 generation onward, with statistically significant differences observed in the F4 generation. Survival analysis indicated no differences up to the F3 generation. However, the post-reproductive period was significantly shorter in the last group compared to the first group in the F3 and F4 generations. These findings suggest that delayed breeding timing cumulatively reduces reproductive output and lifespan, though recovery may occur in the F5 generation. This study provides valuable insights into the generational effects of breeding timing and may inform reproductive strategies in similar species.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"209 ","pages":"Article 117196"},"PeriodicalIF":5.3,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142594163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2024-11-06DOI: 10.1016/j.marpolbul.2024.117242
Shahnawaz Hassan , Bikram Singh Bali , Aarif Yaseen , Muzafar Zaman , Wani Muneer , Shahid Ahmad Ganiee , Abdul Jalil Shah , Bashir Ahmad Ganai
Coral reefs, the rainforests of the sea, are vital hotspots for marine biodiversity. However, the persistent challenge of climate change directly threatens the delicate balance of coral reef ecosystems, impacting myriad species and critical ecosystem services. Therefore, this comprehensive review critically discusses the associated challenges in assessing and preserving coral reef diversity, emphasizing the need for novel biomonitoring techniques due to the elusive and cryptic nature of many reef organisms. The review focuses on environmental DNA (eDNA) analysis as a non-invasive tool for coral species monitoring at various ecological levels. The review highlights that using eDNA in coral reef monitoring requires careful consideration of multiple factors, such as strategic assay development, optimization, and marker selection, substrate selection, and sample volume, which are critical for maximizing the probability of species detection. Moreover, integrating environmental RNA (eRNA) provides additional insights into temporal aspects advancing the coral reef biodiversity research and conservation efforts.
{"title":"Bridging the gaps through environmental DNA: A review of critical considerations for interpreting the biodiversity data in coral reef ecosystems","authors":"Shahnawaz Hassan , Bikram Singh Bali , Aarif Yaseen , Muzafar Zaman , Wani Muneer , Shahid Ahmad Ganiee , Abdul Jalil Shah , Bashir Ahmad Ganai","doi":"10.1016/j.marpolbul.2024.117242","DOIUrl":"10.1016/j.marpolbul.2024.117242","url":null,"abstract":"<div><div>Coral reefs, the rainforests of the sea, are vital hotspots for marine biodiversity. However, the persistent challenge of climate change directly threatens the delicate balance of coral reef ecosystems, impacting myriad species and critical ecosystem services. Therefore, this comprehensive review critically discusses the associated challenges in assessing and preserving coral reef diversity, emphasizing the need for novel biomonitoring techniques due to the elusive and cryptic nature of many reef organisms. The review focuses on environmental DNA (eDNA) analysis as a non-invasive tool for coral species monitoring at various ecological levels. The review highlights that using eDNA in coral reef monitoring requires careful consideration of multiple factors, such as strategic assay development, optimization, and marker selection, substrate selection, and sample volume, which are critical for maximizing the probability of species detection. Moreover, integrating environmental RNA (eRNA) provides additional insights into temporal aspects advancing the coral reef biodiversity research and conservation efforts<strong>.</strong></div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"209 ","pages":"Article 117242"},"PeriodicalIF":5.3,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142594100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2024-11-06DOI: 10.1016/j.marpolbul.2024.117173
Yixi Shi , Agathe Serres , Mingming Liu , Songhai Li
Aquatic debris is considered a major threat to cetaceans. China is subject to severe marine plastic waste that may threaten cetaceans. However, the impact of aquatic debris on cetaceans in Chinese waters has remained poorly studied. In this study, social media platforms were used to collect data on potential evidence of interactions between cetaceans and aquatic debris in China. Results indicate that 74.5 % of cases of interaction with aquatic debris involved entanglement while 25.5 % involved ingestion. Estuarine or coastal species seemed more susceptible to such interactions with aquatic debris, which may be linked to the fact that their habitat concentrates much plastic pollution and nearshore artisanal fishing activities. Offshore cetaceans are less likely to be found stranded, their rate of interaction with plastic debris may therefore be underestimated. We recommend that standardized protocols for stranding reports, autopsy methods, and sharing results should be created for a better understanding of the interactions between cetaceans and aquatic debris in China and worldwide.
{"title":"Interactions between cetaceans and aquatic debris in Chinese waters: A study based on social media data","authors":"Yixi Shi , Agathe Serres , Mingming Liu , Songhai Li","doi":"10.1016/j.marpolbul.2024.117173","DOIUrl":"10.1016/j.marpolbul.2024.117173","url":null,"abstract":"<div><div>Aquatic debris is considered a major threat to cetaceans. China is subject to severe marine plastic waste that may threaten cetaceans. However, the impact of aquatic debris on cetaceans in Chinese waters has remained poorly studied. In this study, social media platforms were used to collect data on potential evidence of interactions between cetaceans and aquatic debris in China. Results indicate that 74.5 % of cases of interaction with aquatic debris involved entanglement while 25.5 % involved ingestion. Estuarine or coastal species seemed more susceptible to such interactions with aquatic debris, which may be linked to the fact that their habitat concentrates much plastic pollution and nearshore artisanal fishing activities. Offshore cetaceans are less likely to be found stranded, their rate of interaction with plastic debris may therefore be underestimated. We recommend that standardized protocols for stranding reports, autopsy methods, and sharing results should be created for a better understanding of the interactions between cetaceans and aquatic debris in China and worldwide.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"209 ","pages":"Article 117173"},"PeriodicalIF":5.3,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142594164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
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