Pub Date : 2023-02-01eCollection Date: 2023-01-01DOI: 10.3897/BDJ.11.e99004
Nadiia Skobel, Ivan Moysiyenko, Barbara Sudnik-Wójcikowska, Iwona Dembicz, Maria Zachwatowicz, Maryna Zakharova, Oleksii Marushchak, Vikroria Dzerkal
Background: The dataset contains the records of vascular plant species occurrences and distribution in old cemeteries (OC) of the Lower Dnipro region (Southern Ukraine). The analysed cemeteries were located in different types of landscapes (agricultural, rural and urban) and represent various ways of using their area (currently used, closed, abandoned). The floristic list includes 440 species of vascular plants (437 in situ, 3 ex situ). The dataset demonstrates a sozological (Red-lists species) value of old cemeteries in Southern Ukraine. The cemeteries constitute refuges of native, rare and steppe flora and play a role of steppe habitat islands in a landscape almost completely transformed to arable land or urbanised.
New information: This is the first dataset which contains information about flora of old cemeteries in Lower Dnipro region (Southern Ukraine). The dataset comprises 2118 occurrences of vascular plants (440 species) recorded in the years 2008-2021 in 13 old cemeteries of the Lower Dnipro region. The dataset includes information about 85 occurrences of rare species (23 species in situ, 3 ex situ) and 652 occurrences of 117 steppe species.
{"title":"Vascular plants of old cemeteries in the Lower Dnipro region (Southern Ukraine).","authors":"Nadiia Skobel, Ivan Moysiyenko, Barbara Sudnik-Wójcikowska, Iwona Dembicz, Maria Zachwatowicz, Maryna Zakharova, Oleksii Marushchak, Vikroria Dzerkal","doi":"10.3897/BDJ.11.e99004","DOIUrl":"10.3897/BDJ.11.e99004","url":null,"abstract":"<p><strong>Background: </strong>The dataset contains the records of vascular plant species occurrences and distribution in old cemeteries (OC) of the Lower Dnipro region (Southern Ukraine). The analysed cemeteries were located in different types of landscapes (agricultural, rural and urban) and represent various ways of using their area (currently used, closed, abandoned). The floristic list includes 440 species of vascular plants (437 <i>in situ</i>, 3 <i>ex situ)</i>. The dataset demonstrates a sozological (Red-lists species) value of old cemeteries in Southern Ukraine. The cemeteries constitute refuges of native, rare and steppe flora and play a role of steppe habitat islands in a landscape almost completely transformed to arable land or urbanised.</p><p><strong>New information: </strong>This is the first dataset which contains information about flora of old cemeteries in Lower Dnipro region (Southern Ukraine). The dataset comprises 2118 occurrences of vascular plants (440 species) recorded in the years 2008-2021 in 13 old cemeteries of the Lower Dnipro region. The dataset includes information about 85 occurrences of rare species (23 species <i>in situ</i>, 3 <i>ex situ</i>) and 652 occurrences of 117 steppe species.</p>","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"15 1","pages":"e99004"},"PeriodicalIF":1.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10848810/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78343792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fitih F. Hailu, Worku T. Bitew, T. Ayele, S. Zawka
In this research, we attempt to give a comparative analysis of the space allocation of multiple-use marine protected areas (MPAs) including but not limited to the introduction of aquaculture in the area. Specifically, we consider the case where there is a need to develop MPAs for the conservation of the environment and ecological diversity. There is also a prevailing call for the establishment of aquaculture activities within the area to meet societal demands. Although aquaculture has negative externalities on MPAs, it helps to reduce the pressure on the capture fishery and increases the supply of fish. We develop a deterministic bioeconomic model that describes the transition dynamics and interrelationships of the systems. We find an optimal aquaculture size relative to the optimal size of MPAs that maximizes the overall economic and ecological benefits. Using numerical methods we determine the trajectory of optimal solutions, the recovery rate of the stocks in and outside the MPAs, and the expansion rate of the aquaculture. Sensitivity analysis was also performed to see the effect of a change in the parameters on the optimal solutions. The numerical results show that MPAs are resilient after the implementation of aquaculture. Moreover, the effectiveness of the optimized management system mainly depends on the cooperative planning between the capture fishery and aquaculture managers.
{"title":"Marine protected areas for resilience and economic development","authors":"Fitih F. Hailu, Worku T. Bitew, T. Ayele, S. Zawka","doi":"10.1051/alr/2023016","DOIUrl":"https://doi.org/10.1051/alr/2023016","url":null,"abstract":"In this research, we attempt to give a comparative analysis of the space allocation of multiple-use marine protected areas (MPAs) including but not limited to the introduction of aquaculture in the area. Specifically, we consider the case where there is a need to develop MPAs for the conservation of the environment and ecological diversity. There is also a prevailing call for the establishment of aquaculture activities within the area to meet societal demands. Although aquaculture has negative externalities on MPAs, it helps to reduce the pressure on the capture fishery and increases the supply of fish. We develop a deterministic bioeconomic model that describes the transition dynamics and interrelationships of the systems. We find an optimal aquaculture size relative to the optimal size of MPAs that maximizes the overall economic and ecological benefits. Using numerical methods we determine the trajectory of optimal solutions, the recovery rate of the stocks in and outside the MPAs, and the expansion rate of the aquaculture. Sensitivity analysis was also performed to see the effect of a change in the parameters on the optimal solutions. The numerical results show that MPAs are resilient after the implementation of aquaculture. Moreover, the effectiveness of the optimized management system mainly depends on the cooperative planning between the capture fishery and aquaculture managers.","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57824949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Griffin Carpenter, N. Carvalho, J. Guillen, R. Prellezo, S. Villasante, J. Andersen, Edvard Avdic Mravlje, J. Berkenhagen, C. Brigaudeau, B. Burke, A. Santos, Suzana Cano, F. Contini, José-María Da-Rocha, I. Davidjuka, Francisco Manuel Fernández Martínez, Ignacio Fontaneda-López, M. Gambino, Elena Garcia Caballero, O. Guyader, J. Herring, G. Hoekstra, Myrto Ioannou, E. Jackson, A. Jung, E. Kazlauskas, M. Keatinge, E. Kuzebski, Sophie Leonardi, Christelle Le Grand, J. Lees, Carmen Margarita Mancebo-Robledo, Marie-Dominique Minne, Arie Mol, Marta Moran Quintana, S. Nicheva, Heidi Pokki, J. Do Ó, A. Rodriguez, R. Sabatella, Andrew Sciberras, A. Souffez, Constantin Stroie, Hanna Swahnberg, I. Tzouramani, Maria Valiente Viana, K. Verlé, J. Virtanen, Ivan Vukov, K. Zhelev
The COVID-19 outbreak and subsequent public health interventions have depressed demand and disrupted supply chains for many fishing businesses. This paper provides an analysis of the COVID-19 impacts on the profitability of the EU fishing fleets. Nowcasting techniques were used to estimate the impact of the COVID-19 pandemic on the economic performance for the EU fishing fleet in 2020 and 2021. Our results show that the economic impact of COVID-19 on this sector was smaller than initially expected and overall profits remained positive. This was in part due to low fuel prices that reduced operating costs of fishing, and the early response from governments to support the sector. The results vary by fishing fleet, revealing that small-scale fleets and the fleets in the Mediterranean and Black seas have been more impacted than large-scale fleets and the fleets in the Northeast Atlantic.
{"title":"The economic performance of the EU fishing fleet during the COVID-19 pandemic","authors":"Griffin Carpenter, N. Carvalho, J. Guillen, R. Prellezo, S. Villasante, J. Andersen, Edvard Avdic Mravlje, J. Berkenhagen, C. Brigaudeau, B. Burke, A. Santos, Suzana Cano, F. Contini, José-María Da-Rocha, I. Davidjuka, Francisco Manuel Fernández Martínez, Ignacio Fontaneda-López, M. Gambino, Elena Garcia Caballero, O. Guyader, J. Herring, G. Hoekstra, Myrto Ioannou, E. Jackson, A. Jung, E. Kazlauskas, M. Keatinge, E. Kuzebski, Sophie Leonardi, Christelle Le Grand, J. Lees, Carmen Margarita Mancebo-Robledo, Marie-Dominique Minne, Arie Mol, Marta Moran Quintana, S. Nicheva, Heidi Pokki, J. Do Ó, A. Rodriguez, R. Sabatella, Andrew Sciberras, A. Souffez, Constantin Stroie, Hanna Swahnberg, I. Tzouramani, Maria Valiente Viana, K. Verlé, J. Virtanen, Ivan Vukov, K. Zhelev","doi":"10.1051/alr/2022022","DOIUrl":"https://doi.org/10.1051/alr/2022022","url":null,"abstract":"The COVID-19 outbreak and subsequent public health interventions have depressed demand and disrupted supply chains for many fishing businesses. This paper provides an analysis of the COVID-19 impacts on the profitability of the EU fishing fleets. Nowcasting techniques were used to estimate the impact of the COVID-19 pandemic on the economic performance for the EU fishing fleet in 2020 and 2021. Our results show that the economic impact of COVID-19 on this sector was smaller than initially expected and overall profits remained positive. This was in part due to low fuel prices that reduced operating costs of fishing, and the early response from governments to support the sector. The results vary by fishing fleet, revealing that small-scale fleets and the fleets in the Mediterranean and Black seas have been more impacted than large-scale fleets and the fleets in the Northeast Atlantic.","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57824936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
P. Ermgassen, Åsa Strand, Nienke Bakker, Ainhoa Blanco, K. Bonačić, P. Boudry, G. Brundu, T. Cameron, Iarfhlaith Connellan, F. Da costa, A. Debney, Monica Fabra, Anamarija Frankić, C. Gamble, Mathew W. Gray, Luke Helmer, Zoë Holbrook, Tristan Hugh‐Jones, P. Kamermans, Thorolf Magnesen, Pernille Nielsen, Joanna Preston, Christopher J. Ranger, C. Saurel, D. Smyth, Brecht Stechele, J. Theodorou, Bérenger Colsoul
The European flat oyster, Ostrea edulis, is a habitat-forming bivalve which was historically widespread throughout Europe. Following its decline due to overfishing, pollution, sedimentation, invasive species, and disease, O. edulis and its beds are now listed as a threatened and/or declining species and habitat by OSPAR. Increasing recognition of the plight of the oyster, alongside rapidly developing restoration techniques and growing interest in marine restoration, has resulted in a recent and rapid growth in habitat restoration efforts. O. edulis seed supply is currently a major bottleneck in scaling up habitat restoration efforts in Europe. O. edulis has been cultured for centuries, however, research into its culture declined following the introduction of the Pacific oyster, Crassostrea gigas to Europe in the early 1970 s. Recent efforts to renew both hatchery and pond production of O. edulis seed for habitat restoration purposes are hampered by restoration project timelines and funding typically being short, or projects not planning appropriately for the timescales required for investment, research-and-development and delivery of oyster seed by commercial producers. Furthermore, funding for restoration is intermittent, making long-term commitments between producers and restoration practitioners difficult. Long-term, strategic investment in research and production are needed to overcome these bottlenecks and meet current ambitious restoration targets across Europe.
{"title":"Overcoming Ostrea edulis seed production limitations to meet ecosystem restoration demands in the UN decade on restoration","authors":"P. Ermgassen, Åsa Strand, Nienke Bakker, Ainhoa Blanco, K. Bonačić, P. Boudry, G. Brundu, T. Cameron, Iarfhlaith Connellan, F. Da costa, A. Debney, Monica Fabra, Anamarija Frankić, C. Gamble, Mathew W. Gray, Luke Helmer, Zoë Holbrook, Tristan Hugh‐Jones, P. Kamermans, Thorolf Magnesen, Pernille Nielsen, Joanna Preston, Christopher J. Ranger, C. Saurel, D. Smyth, Brecht Stechele, J. Theodorou, Bérenger Colsoul","doi":"10.1051/alr/2023012","DOIUrl":"https://doi.org/10.1051/alr/2023012","url":null,"abstract":"The European flat oyster, Ostrea edulis, is a habitat-forming bivalve which was historically widespread throughout Europe. Following its decline due to overfishing, pollution, sedimentation, invasive species, and disease, O. edulis and its beds are now listed as a threatened and/or declining species and habitat by OSPAR. Increasing recognition of the plight of the oyster, alongside rapidly developing restoration techniques and growing interest in marine restoration, has resulted in a recent and rapid growth in habitat restoration efforts. O. edulis seed supply is currently a major bottleneck in scaling up habitat restoration efforts in Europe. O. edulis has been cultured for centuries, however, research into its culture declined following the introduction of the Pacific oyster, Crassostrea gigas to Europe in the early 1970 s. Recent efforts to renew both hatchery and pond production of O. edulis seed for habitat restoration purposes are hampered by restoration project timelines and funding typically being short, or projects not planning appropriately for the timescales required for investment, research-and-development and delivery of oyster seed by commercial producers. Furthermore, funding for restoration is intermittent, making long-term commitments between producers and restoration practitioners difficult. Long-term, strategic investment in research and production are needed to overcome these bottlenecks and meet current ambitious restoration targets across Europe.","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57825187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Anadromous European smelt (Osmerus eperlanus) is a keystone species in lake and river ecosystems. In the past and present, stock declines in several of its habitats have been reported. The reasons for this are unclear. Experimental research on the early life stages could help to reveal the potential causes. For this purpose, knowledge on artificial propagation and rearing of early life stages is needed. Following from previous work, we show how to scale up and mass rear European smelt using conventional hatchery equipment and present a simplified protocol for first feeding. Smelt eggs, after egg adhesiveness is removed, can be incubated in standard hatchery equipment commonly used in aquaculture. Incubation in McDonald-type jars shows even improved results when settling of floating eggs is prevented. Next to avoiding egg loss this simultaneously reduces labor for daily care. First feeding of larval smelt can be achieved with decapsulated artemia cysts, eliminating the need for the labor-intensive green water production. Using the protocol presented, larvae of different stages can be produced in large quantities allowing further experimental studies.
{"title":"First steps towards mass rearing of European smelt (Osmerus eperlanus, L.) using conventional hatchery equipment","authors":"S. Reiser, Timo Michels, Björn Illing","doi":"10.1051/alr/2023003","DOIUrl":"https://doi.org/10.1051/alr/2023003","url":null,"abstract":"Anadromous European smelt (Osmerus eperlanus) is a keystone species in lake and river ecosystems. In the past and present, stock declines in several of its habitats have been reported. The reasons for this are unclear. Experimental research on the early life stages could help to reveal the potential causes. For this purpose, knowledge on artificial propagation and rearing of early life stages is needed. Following from previous work, we show how to scale up and mass rear European smelt using conventional hatchery equipment and present a simplified protocol for first feeding. Smelt eggs, after egg adhesiveness is removed, can be incubated in standard hatchery equipment commonly used in aquaculture. Incubation in McDonald-type jars shows even improved results when settling of floating eggs is prevented. Next to avoiding egg loss this simultaneously reduces labor for daily care. First feeding of larval smelt can be achieved with decapsulated artemia cysts, eliminating the need for the labor-intensive green water production. Using the protocol presented, larvae of different stages can be produced in large quantities allowing further experimental studies.","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57824562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Verena M. Merk, Tanja Hausen, Timon Ameis, Bérenger Colsoul, M. Boersma, B. Pogoda
Growth is an important biological trait and monitoring metric for the assessment of the success and progress of restoration projects with the European oyster (Ostrea edulis). However, sampling time and frequency are often limited, as well as the ability to survey individual growth. Chemical dyes, such as calcein, can be used to create incremental markings for measuring growth in shell cross-sections, especially in bivalves. However, potential negative effects and limits for successful staining have not been assessed for O. edulis, yet. In this study, three different calcein concentrations (100 mg l−1, 150 mg l−1, 200 mg l−1) with three different immersion times (6 h, 12 h, 24 h) were tested for potential negative effects, the best incremental marking result and their potential to be used in growth measurements. Furthermore, the deposition of an annual growth line was investigated. Results showed that calcein is a reliable in situ fluorescence marker that produced sufficient growth lines in the cross-section of O. edulis. At a concentration of 100 mg l−1 or higher and immersion times of 6 h or more, no negative effects on growth and survival were observed after five months. Applications include the possibility for long-term, individual growth data for a large number of oysters for restoration monitoring as well as the option of marking restored oysters from aquaculture production to distinguish them from existing wild stock populations or natural offspring.
生长是衡量欧洲牡蛎(Ostrea edulis)恢复工程成功与进展的重要生物学性状和监测指标。然而，采样时间和频率往往是有限的，以及调查个人成长的能力。化学染料，如钙黄蛋白，可用于创建增量标记，以测量壳截面的生长，特别是在双壳类中。然而，潜在的负面影响和成功染色的限制尚未评估。在这项研究中，测试了三种不同钙黄蛋白浓度(100 mg l - 1,150 mg l - 1,200 mg l - 1)和三种不同浸泡时间(6小时，12小时，24小时)的潜在负面影响，最佳增量标记结果及其用于生长测量的潜力。此外，还研究了年生长线的沉积。结果表明，钙黄蛋白是一种可靠的原位荧光标记物，在毛竹的横截面上产生了足够的生长线。当浓度为100 mg l - 1或更高时，浸泡时间为6小时或更长，5个月后对生长和存活没有负面影响。应用包括为恢复监测提供大量牡蛎的长期个体生长数据的可能性，以及标记从水产养殖生产中恢复的牡蛎，以将它们与现有的野生种群或自然后代区分开来的选择。
{"title":"Potential of calcein staining as growth monitoring marker in Ostrea edulis","authors":"Verena M. Merk, Tanja Hausen, Timon Ameis, Bérenger Colsoul, M. Boersma, B. Pogoda","doi":"10.1051/alr/2023010","DOIUrl":"https://doi.org/10.1051/alr/2023010","url":null,"abstract":"Growth is an important biological trait and monitoring metric for the assessment of the success and progress of restoration projects with the European oyster (Ostrea edulis). However, sampling time and frequency are often limited, as well as the ability to survey individual growth. Chemical dyes, such as calcein, can be used to create incremental markings for measuring growth in shell cross-sections, especially in bivalves. However, potential negative effects and limits for successful staining have not been assessed for O. edulis, yet. In this study, three different calcein concentrations (100 mg l−1, 150 mg l−1, 200 mg l−1) with three different immersion times (6 h, 12 h, 24 h) were tested for potential negative effects, the best incremental marking result and their potential to be used in growth measurements. Furthermore, the deposition of an annual growth line was investigated. Results showed that calcein is a reliable in situ fluorescence marker that produced sufficient growth lines in the cross-section of O. edulis. At a concentration of 100 mg l−1 or higher and immersion times of 6 h or more, no negative effects on growth and survival were observed after five months. Applications include the possibility for long-term, individual growth data for a large number of oysters for restoration monitoring as well as the option of marking restored oysters from aquaculture production to distinguish them from existing wild stock populations or natural offspring.","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"73 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57825158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The creation of Exclusive Economic Zones (EEZs) in 1982 gave coastal countries sovereignty over their local tuna resources, whereas the migratory nature of tuna calls for regional management. However, as regional tuna management by Regional Fisheries Management Organisations (RFMOs) does not always facilitate optimal management of local resources by coastal countries, there is a need for an approach that ensures both the achievement of regional management objectives and optimisation of local benefits, i.e., “glocalised” management. To promote “glocal” management measures for the local populations of highly migratory species, (1) the spatio-temporal VAST model was used to estimate abundance indices for the adult regional Eastern Atlantic yellowfin tuna population and its local component in Ivorian waters using catch and effort data and (2) convergent cross mapping was used to examine the causal relationship between changes in abundance at these different spatial scales over time. Convergent cross-mapping detected a causal relationship between general stock dynamics and local dynamics, in the direction from global stock abundances to local resource abundances. This implies that the success of local fishing was closely linked to the general state of the stock. Conversely, we found no evidence of a causal relationship in the direction from local resources to the regional stock. This suggests that local adult dynamics had little or no influence on overall stock dynamics. Based on these results, we propose several criteria to ensure fairer distribution of tuna resources between coastal states and distant water fleets (DWFs).
{"title":"Towards “glocalised” management of tuna stocks based on causation between a stock and its component belonging temporally to local Exclusive Economic Zones","authors":"S. Akia, M. Amandè, D. Gaertner","doi":"10.1051/alr/2023018","DOIUrl":"https://doi.org/10.1051/alr/2023018","url":null,"abstract":"The creation of Exclusive Economic Zones (EEZs) in 1982 gave coastal countries sovereignty over their local tuna resources, whereas the migratory nature of tuna calls for regional management. However, as regional tuna management by Regional Fisheries Management Organisations (RFMOs) does not always facilitate optimal management of local resources by coastal countries, there is a need for an approach that ensures both the achievement of regional management objectives and optimisation of local benefits, i.e., “glocalised” management. To promote “glocal” management measures for the local populations of highly migratory species, (1) the spatio-temporal VAST model was used to estimate abundance indices for the adult regional Eastern Atlantic yellowfin tuna population and its local component in Ivorian waters using catch and effort data and (2) convergent cross mapping was used to examine the causal relationship between changes in abundance at these different spatial scales over time. Convergent cross-mapping detected a causal relationship between general stock dynamics and local dynamics, in the direction from global stock abundances to local resource abundances. This implies that the success of local fishing was closely linked to the general state of the stock. Conversely, we found no evidence of a causal relationship in the direction from local resources to the regional stock. This suggests that local adult dynamics had little or no influence on overall stock dynamics. Based on these results, we propose several criteria to ensure fairer distribution of tuna resources between coastal states and distant water fleets (DWFs).","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57824971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fernando Pagels, I. Garrido, Carla Teixeira, T. Tavares, B. Costas, F. Malcata, L. Valente, A. Catarina Guedes
Sea urchin processing practices by the canning industry result in a large volume of waste due to a high fraction of inedible parts, in special the gut, that can still be a valuable source of bioactive compounds. Therefore, this work aimed to thoroughly characterise gut biomass from Paracentrotus lividus evaluating its bioactive potential. The gut biomass was evaluated in terms of bioactive capacity, and biochemical composition in both males and females. Although no statistical differences were found between sexes in any of these parameters, this study provided a proof of concept on the potential of sea urchin's gut, obtained as a co-product in the sea urchin industry, for feed supplementation. The gut biomass exhibited a high antioxidant capacity (IC50 ≈ 0.5–1.0 mgDW mL−1 in four different assays) and bactericidal activity (IC50 < 1.0 mgDW mL−1 against Vibrio parahaemolyticus, Edwardsiella tarda, and Tenacibaculum maritimum). The gut co-product can also be used as a source of phenolic compounds, carotenoids, and PUFAs, with contents of 4.6 ± 0.4, 2.4 ± 0.8, and 93.0 ± 3.1 mg gDW−1, respectively. Overall, the sea urchin's gut seems a valuable product with a remarkable potential for use in aquafeeds as a source of bioactive compounds.
罐头工业对海胆的加工造成了大量的浪费，因为其中有很大一部分是不可食用的部分，特别是内脏，而这些部分仍然是生物活性化合物的宝贵来源。因此，本研究旨在全面表征lividus副尖梭菌的肠道生物量，评估其生物活性潜力。从生物活性容量和生化组成方面对雄性和雌性肠道生物量进行了评估。虽然在这些参数中没有发现性别之间的统计差异，但这项研究为海胆肠道作为海胆工业的副产品用于饲料补充的潜力提供了概念证明。肠道生物量表现出较高的抗氧化能力(在四种不同的测定中IC50≈0.5-1.0 mgDW mL - 1)和杀菌活性(IC50 < 1.0 mgDW mL - 1)，对副溶血性弧菌、迟缓爱德华菌和海洋Tenacibaculum均有抑制作用。肠道副产物还可以作为酚类化合物、类胡萝卜素和PUFAs的来源，其含量分别为4.6±0.4、2.4±0.8和93.0±3.1 mg gDW−1。总的来说，海胆的肠道似乎是一种有价值的产品，在水产饲料中作为生物活性化合物的来源具有显著的潜力。
{"title":"Sea urchin (Paracentrotus lividus) gut biomass as a co-product with antioxidant and antibacterial potential to supplement aquafeeds","authors":"Fernando Pagels, I. Garrido, Carla Teixeira, T. Tavares, B. Costas, F. Malcata, L. Valente, A. Catarina Guedes","doi":"10.1051/alr/2023022","DOIUrl":"https://doi.org/10.1051/alr/2023022","url":null,"abstract":"Sea urchin processing practices by the canning industry result in a large volume of waste due to a high fraction of inedible parts, in special the gut, that can still be a valuable source of bioactive compounds. Therefore, this work aimed to thoroughly characterise gut biomass from Paracentrotus lividus evaluating its bioactive potential. The gut biomass was evaluated in terms of bioactive capacity, and biochemical composition in both males and females. Although no statistical differences were found between sexes in any of these parameters, this study provided a proof of concept on the potential of sea urchin's gut, obtained as a co-product in the sea urchin industry, for feed supplementation. The gut biomass exhibited a high antioxidant capacity (IC50 ≈ 0.5–1.0 mgDW mL−1 in four different assays) and bactericidal activity (IC50 < 1.0 mgDW mL−1 against Vibrio parahaemolyticus, Edwardsiella tarda, and Tenacibaculum maritimum). The gut co-product can also be used as a source of phenolic compounds, carotenoids, and PUFAs, with contents of 4.6 ± 0.4, 2.4 ± 0.8, and 93.0 ± 3.1 mg gDW−1, respectively. Overall, the sea urchin's gut seems a valuable product with a remarkable potential for use in aquafeeds as a source of bioactive compounds.","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57825041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study introduces the concept of portfolios of distribution maps, which consist of the reduced set of empirical orthogonal maps that best explain spatial biomass distributions of a given species over time. The approach is demonstrated for the distributions of common octopus (Octupus vulgaris) off Mauritania over the last thirty years. The maps in the portfolio are the subset of empirical orthogonal maps that allowed to recover 60% of the spatiotemporal biomass distribution variance and whose temporal weights were significantly correlated with abundance. For octopus during the hot season, one single map explained half of the overall variance of the distribution data, while during the cold season, the portfolio of octopus distribution maps consisted of four maps, with the temporal weights of the second map being negatively correlated with upwelling intensity six months before. The size of each portfolio represents the number of distinct spatial patterns describing octopus spatial distributions. Assuming that specific but hidden processes explain each biomass spatial distribution of the portfolio, the size of a map portfolio might be interpreted as a proxy for system resilience. A small portfolio could reflect systems that are more fragile.
{"title":"Portfolio of distribution maps for Octopus vulgaris off Mauritania","authors":"Dedah Ahmed-Babou, H. Demarcq, B. Meissa, N. Bez","doi":"10.1051/alr/2023008","DOIUrl":"https://doi.org/10.1051/alr/2023008","url":null,"abstract":"This study introduces the concept of portfolios of distribution maps, which consist of the reduced set of empirical orthogonal maps that best explain spatial biomass distributions of a given species over time. The approach is demonstrated for the distributions of common octopus (Octupus vulgaris) off Mauritania over the last thirty years. The maps in the portfolio are the subset of empirical orthogonal maps that allowed to recover 60% of the spatiotemporal biomass distribution variance and whose temporal weights were significantly correlated with abundance. For octopus during the hot season, one single map explained half of the overall variance of the distribution data, while during the cold season, the portfolio of octopus distribution maps consisted of four maps, with the temporal weights of the second map being negatively correlated with upwelling intensity six months before. The size of each portfolio represents the number of distinct spatial patterns describing octopus spatial distributions. Assuming that specific but hidden processes explain each biomass spatial distribution of the portfolio, the size of a map portfolio might be interpreted as a proxy for system resilience. A small portfolio could reflect systems that are more fragile.","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57825106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kenn Papadopoulo, D. Villegas‐Ríos, G. Mucientes, A. Hillinger, A. Alonso‐Fernández
Fish movements are fundamental to their ecology and survival. Understanding the causes and consequences of the spatial behaviour of fish is of high relevance as it provides critical knowledge for conservation purposes. Skate (Rajidae) populations face an unprecedented global decline due to overfishing. In this study, we used acoustic telemetry to track the movements of nine individuals of the near threatened thornback skate (Raja clavata) around the Cíes Islands, a small marine protected area in the northwest of the Iberian Peninsula. Our results demonstrate the significant impacts of biotic and abiotic drivers on the spatial behaviour of R. clavata. Overall residency inside the study array was low (0.073), differed between sexes (higher for females) and over the course of the year (peaking in summer). The analysis of the direction of the excursions performed by R. clavata individuals revealed high consistency in the exit and entry areas and a strong connectivity with inshore waters connecting with the Ría de Vigo, as compared with offshore waters connecting with the open ocean. Finally, the activity space of R. clavata also varied over the time of the year with a peak in summer. This study provides an important baseline information for understanding the spatial behaviour of R. clavata that can serve as a starting point for planning future conservation actions or studies.
鱼类的活动对它们的生态和生存至关重要。了解鱼类空间行为的原因和后果是高度相关的，因为它为保护目的提供了关键的知识。由于过度捕捞，鳐(Rajidae)的数量面临着前所未有的全球下降。在这项研究中，我们使用声波遥测技术跟踪了Cíes群岛周围9只濒临威胁的刺背鳐(Raja clavata)的活动，这是伊比利亚半岛西北部的一个小型海洋保护区。我们的研究结果表明，生物和非生物驱动因素对克拉瓦塔的空间行为有显著影响。在研究阵列中的总体驻留率很低(0.073)，在性别之间(女性较高)和一年中的过程中(夏季达到峰值)存在差异。对克拉瓦塔r.c avata个体迁徙方向的分析显示，与与公海相连的近海水域相比，它们在出口和入境区域具有高度的一致性，与Ría de Vigo相连的近海水域具有很强的连通性。最后，克拉瓦塔的活动空间在一年中的不同时间也有变化，在夏季达到高峰。该研究为了解克拉瓦塔的空间行为提供了重要的基线信息，可作为规划未来保护行动或研究的起点。
{"title":"Drivers of the spatial behaviour of the threatened thornback skate (Raja clavata)","authors":"Kenn Papadopoulo, D. Villegas‐Ríos, G. Mucientes, A. Hillinger, A. Alonso‐Fernández","doi":"10.1051/alr/2023017","DOIUrl":"https://doi.org/10.1051/alr/2023017","url":null,"abstract":"Fish movements are fundamental to their ecology and survival. Understanding the causes and consequences of the spatial behaviour of fish is of high relevance as it provides critical knowledge for conservation purposes. Skate (Rajidae) populations face an unprecedented global decline due to overfishing. In this study, we used acoustic telemetry to track the movements of nine individuals of the near threatened thornback skate (Raja clavata) around the Cíes Islands, a small marine protected area in the northwest of the Iberian Peninsula. Our results demonstrate the significant impacts of biotic and abiotic drivers on the spatial behaviour of R. clavata. Overall residency inside the study array was low (0.073), differed between sexes (higher for females) and over the course of the year (peaking in summer). The analysis of the direction of the excursions performed by R. clavata individuals revealed high consistency in the exit and entry areas and a strong connectivity with inshore waters connecting with the Ría de Vigo, as compared with offshore waters connecting with the open ocean. Finally, the activity space of R. clavata also varied over the time of the year with a peak in summer. This study provides an important baseline information for understanding the spatial behaviour of R. clavata that can serve as a starting point for planning future conservation actions or studies.","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57824959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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