Aquatic Conservation-Marine and Freshwater Ecosystems最新文献

{"title":"The First Standardized Scoring System to Assess the Welfare of Free-Ranging Indo-Pacific Humpback Dolphins (Sousa chinensis)","authors":"Agathe Serres,&nbsp;Rebecca M. Boys,&nbsp;Ngaio J. Beausoleil,&nbsp;Sara Platto,&nbsp;Fabienne Delfour,&nbsp;Songhai Li","doi":"10.1002/aqc.70004","DOIUrl":"https://doi.org/10.1002/aqc.70004","url":null,"abstract":"<div>\u0000 \u0000 <p>The assessment of wild animal welfare has recently gained interest and represents a novel, complementary approach to monitoring free-ranging populations for conservation purposes. However, few attempts have been made to develop standardized welfare assessment tools for free-ranging animals. In the present study, a preliminary scoring system for the welfare assessment of Indo-Pacific humpback dolphins (IPHDs) was created using the Five Domains Model. During a series of online meetings, the panel established the scoring unit, the contribution of each parameter to the four physical/functional domains, the inferred mental states and impact intensity associated with each of these parameters, and the method of aggregating parameter scores within and among domains. The resulting framework includes a total of 53 parameter scores. A total of 20 welfare-status and 33 welfare-alerting parameters were identified; these are aggregated into two overall welfare grades for enhancement (positive experiences) and compromise (negative experiences). The panel attributed confidence scores to the intensity impact reflected by each parameter and associated mental states. As expected, these scores reflect higher confidence in welfare-status than welfare-alerting parameters; welfare compromise was also attributed higher confidence than welfare enhancement and Domain 1 (Nutrition) globally received higher confidence scores than other domains. As with any expert elicitation study, subjective biases likely exist; these can be reduced through further research on the suggested parameters. The framework uses current knowledge and has been developed to enable continual improvement as further evidence becomes available on various parameters. This study represents an important step in the development of a welfare assessment tool (WAT) for IPHDs. Next steps include defining measurement methods and thresholds for scoring parameter intensities, followed by reliability testing. This WAT can then be used to systematically monitor populations of IPHDs in a way that will better inform conservation measures and ensure their effectiveness.</p>\u0000 </div>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664905","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}

{"title":"Proposal on Species-Specific Synergistic Conservation Measures for Critically Endangered Gharial (Gavialis gangeticus)","authors":"Arvind Kumar Dwivedi,&nbsp;Kritish De","doi":"10.1002/aqc.70010","DOIUrl":"https://doi.org/10.1002/aqc.70010","url":null,"abstract":"<div>\u0000 \u0000 <p>The gharial (<i>Gavialis gangeticus</i>), a critically endangered freshwater reptile endemic to the Indian subcontinent, faces severe threats from various anthropogenic stressors. Despite positive conservation efforts, a holistic approach is essential for improved outcomes. This involves (1) identification of new conservation priority sites, (2) establishment of gharial populations outside protected areas, (3) interlinking ecosystem processes, (4) conducting census of gharial annually, (5) efficient use of digital technology, (6) adoption of best management practices to mitigate various threats, (7) assessment of inbreeding depression in gharial, (8) rescue and rehabilitation training for local communities, (9) interstate and trans-boundary commission and (10) survey on socio-economic status of local communities. Implementing the proposed synergistic measures will not only strengthen conservation efforts but also enhance the livelihoods of local communities, ensuring a sustainable future for this species.</p>\u0000 </div>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664838","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}

{"title":"Harbour Porpoise Bycatch: Determining Spatial Distribution of Risk to Inform Management Measures","authors":"Hope E. Irvine,&nbsp;Eunice H. Pinn,&nbsp;I. Philip Smith,&nbsp;William Lart","doi":"10.1002/aqc.70003","DOIUrl":"https://doi.org/10.1002/aqc.70003","url":null,"abstract":"<p>Bycatch in static nets (i.e., gillnets, trammel nets and tangle nets) has been identified as the leading cause of harbour porpoise mortality globally. Various options are available for mitigating and managing this risk. However, selecting the most effective management measures to balance harbour porpoise conservation needs with sustainable fishing practice is challenging. By understanding the spatial variation of bycatch risk, it is possible to tailor mitigation and management options for a specific localised area or region. This study identified areas of potential interaction between harbour porpoise and static net fishing activity. An interaction index, a measure of the coincidence of porpoise and fishing activity, was developed. Using this approach, it was possible to differentiate between areas that potentially represented concentrations of higher bycatch risk and other areas with a lower but more widespread level of risk. For the Irish and Celtic Seas, an area recognised as having the highest harbour porpoise bycatch rate in European waters, there was a low to moderate interaction index, with the risk spread over a relatively large area. In the North Sea, in contrast, high values of the interaction index occurred in smaller areas, indicating that bycatch risk was more concentrated in this region. With the exception of some coastal areas, the interaction index was generally low for the West of Scotland and Ireland region. The identification of potential areas of interaction between harbour porpoise and static net fishing provides an opportunity to focus monitoring efforts and inform management decisions. For example, the use of area-based management encompassing small areas may be appropriate when spatially concentrated risk of bycatch is evidenced, whereas the use of technical measures, such as pingers, could be considered for areas with widespread lower risk of bycatch.</p>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aqc.70003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664496","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}

{"title":"Declines in Freshwater Mussels and Loss of Mussel–Invertebrate Interactions in the Subtropical Waterbodies of Dhaka, Bangladesh","authors":"Isobel Ollard,&nbsp;David C. Aldridge,&nbsp;Fatima Jannat,&nbsp;Gawsia W. Chowdhury","doi":"10.1002/aqc.70005","DOIUrl":"https://doi.org/10.1002/aqc.70005","url":null,"abstract":"<p>\u0000 \u0000 </p>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aqc.70005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664497","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}

{"title":"High Vulnerability of Rhodolith Bed Frameworks and Underlying Sediment to Ongoing Ocean Climate Change","authors":"Aidan Hicks,&nbsp;Kyle R. Millar,&nbsp;Patrick Gagnon","doi":"10.1002/aqc.70001","DOIUrl":"https://doi.org/10.1002/aqc.70001","url":null,"abstract":"<div>\u0000 \u0000 <p>Rhodoliths are non-geniculate, free-living coralline red algae that can accumulate on the seafloor and form structurally complex habitats supporting highly biodiverse communities termed rhodolith beds. Limited understanding of key rhodolith kinetical attributes and how they scale with environmental variability limits ability to predict changes in rhodolith bed distribution and abundance in a globally changing ocean climate. We carried out two experiments in an oscillatory wave tank to test the effects of (1) rhodolith (<i>Boreolithothamnion glaciale</i>) density and wave velocity on rhodolith displacement and abrasion over a hard substratum and (2) rhodolith density on rhodolith displacement and the stability of underlying sediment. We established that on a hard substratum, (1) a threshold wave velocity of ~0.3 m s⁻¹ is required to induce noticeable displacement in average-sized rhodoliths and (2) rhodolith abrasion increases (quasi-linearly) with wave velocity up to this threshold. We also showed that (3) for a same rhodolith density, rhodolith displacement is at least two times smaller on a sedimentary than hard substratum and (4) the loss of sediment underneath rhodoliths decreases (quasi-linearly) with an increase in rhodolith density. Rates documented and strong scaling with changes in water motion and rhodolith density indicate that relatively small changes in the density of rhodoliths or hydrodynamic forces can quickly destabilize rhodolith bed frameworks and underlying sediment. These rates can be used to develop predictive models of change in rhodolith bed distribution and abundance that can in turn inform development of more accurate, science-based rhodolith bed conservation strategies.</p>\u0000 </div>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664493","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}

{"title":"The Benefit of Coralline Algae Science to Elevate Ocean Literacy","authors":"Siddhi Joshi,&nbsp;Heidi L. Burdett","doi":"10.1002/aqc.70006","DOIUrl":"https://doi.org/10.1002/aqc.70006","url":null,"abstract":"","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664494","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}

{"title":"DNA Metabarcoding Reveals the Dietary Composition for Smooth-Coated Otter (Lutrogale perspicillata) and Asian Small-Clawed Otter (Aonyx cinereus) in Malaysia","authors":"Nursyuhada Othman,&nbsp;Kaviarasu Munian,&nbsp;Hidayah Haris,&nbsp;Nur Hartini Sariyati,&nbsp;Nurfatiha Akmal Fawwazah Abdullah-Fauzi,&nbsp;Mohd Lokman Ilham-Norhakim,&nbsp;Abd Rahman Mohd-Ridwan,&nbsp;Nor Rahman Aifat,&nbsp;Pazil Abdul-Patah,&nbsp;Hiroshi Sasaki,&nbsp;Daisuke Waku,&nbsp;Md Nor Shukor,&nbsp;Badrul Munir Md-Zain,&nbsp;Muhammad Abu Bakar Abdul-Latiff","doi":"10.1002/aqc.4263","DOIUrl":"https://doi.org/10.1002/aqc.4263","url":null,"abstract":"<div>\u0000 \u0000 <p>The declining population of otter species in Malaysia, including the Asian small-clawed otter (<i>Aonyx cinereus</i>), smooth-coated otter (<i>Lutrogale perspicillata</i>) and hairy-nosed otter (<i>Lutra sumatrana</i>), is primarily attributed to habitat changes. Understanding the ecological aspects of otters, including their diets, is crucial for formulating effective conservation management strategies. To address this knowledge gap, we employed Next Generation Sequencing (NGS) as an alternative approach to enhance our understanding of the species' food chain. Specifically, this study investigated the diets of Asian small-clawed otters and smooth-coated otters by analysing an ~130 bp segment of the Cytochrome <i>b</i> (Cyt<i>b</i>) gene using Illumina Miniseq platform. The analysis successfully generated 572,311 reads, identifying four families, nine genera and 11 food species consumed by both otter species. Smooth-coated otters primarily consumed fish (96%) and frogs (4%), whereas Asian small-clawed otters exclusively fed on fish (100%), with the genus <i>Esomus</i> being the predominant fish genus found in the spraints. The diversity analysis of their diets revealed significant differences between two species (<i>p</i> &lt; 0.05). As a result, DNA metabarcoding provides a reliable method for verifying otter dietary information and can serve as a valuable tool in assessing fish diversity, thus contributing significantly to the management and conservation of otter populations, particularly in Malaysia.</p>\u0000 </div>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142561727","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}

{"title":"Invasion Dynamics of the Alien Amphibian Xenopus laevis in France: Perspectives for Management","authors":"Alain Pagano,&nbsp;Clément Harmange,&nbsp;Mariastella Rappoccio,&nbsp;Tatiana Colchen,&nbsp;Gabriel Combet,&nbsp;Philippe Chouteau,&nbsp;Damien Picard,&nbsp;Eléonore Moreau,&nbsp;Marco Bartoli,&nbsp;Olivier Pays","doi":"10.1002/aqc.70000","DOIUrl":"https://doi.org/10.1002/aqc.70000","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Invasive alien species (IAS) are recognised as pervasive drivers of global environmental change and pose significant threats to socio-ecosystems worldwide. Although much attention is focused on prevalent IAS, the oversight of species that are still contained and approaching critical invasion thresholds raises concern. In this context, scientific support to implement effective and spatially informed management strategies is critically needed.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Aims</h3>\u0000 \u0000 <p>Our study focuses on the African clawed frog, <i>Xenopus laevis</i>, a concerning IAS projected to undergo a substantial expansion in Europe.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials &amp; Methods</h3>\u0000 \u0000 <p>Using a comprehensive analysis of three distinct datasets, our study aimed to document newly colonised sites and provide an up-to-date overview of the current distribution and invasion dynamics of <i>X. laevis</i> in France.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Our results revealed recent colonisation of new sites within the established range of the species and the continuous progression of the invasion front at a rate of 1.2 km per year. This annual progression currently translates to an expansion of approximately 400 km² per year in the predicted distribution range of the species.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Discussion</h3>\u0000 \u0000 <p>Emphasising the urgent need for proactive management, we recommend measures encompassing prevention, early detection and rapid responses to invasion, delineated across three strategic zoning levels.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Immediate and coordinated efforts are imperative to anticipate and mitigate the considerable socio-environmental impacts associated with this species in the future.</p>\u0000 </section>\u0000 </div>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aqc.70000","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142555388","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}

{"title":"Just Add Water and Stir: An Artificial Suburban Lake Develops Into an Important Moulting Site for Large-Bodied Herbivorous Wildfowl","authors":"Kevin Kuhlmann Clausen,&nbsp;Per Nissen Grøn,&nbsp;Henning Lykke Larsen,&nbsp;Preben Clausen,&nbsp;Anthony David Fox","doi":"10.1002/aqc.70002","DOIUrl":"https://doi.org/10.1002/aqc.70002","url":null,"abstract":"<p>Egø Engsø is an artificial Danish suburban lake created in 2006, primarily for nutrient retention and flood control. Expanding submerged macrophyte cover (dominated by Stoneworts <i>Chara</i> spp. and Pondweeds <i>Potamogeton</i> spp.) attracted moulting concentrations of 600 mute swans <i>Cygnus olor</i>, 1100 greylag geese <i>Anser anser</i> and 280 Canada geese <i>Branta canadensis</i>. These unexpected additions to the avifauna benefit from reliable food supplies and effective protection from recreational disturbance on and near the water surface. Egø Engsø is a model of enabling intense human activity at a waterbird moulting site, and confirming appropriate planning can accommodate multiple functional objectives following wetland creation.</p>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 10","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aqc.70002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142525023","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}

{"title":"The Methods for Estimating Lake Volume, Mean Depth, and Maximum Depth in European Standard EN 16039:2011 Are Flawed and Should Not Be Used","authors":"David Seekell,&nbsp;Cristian Gudasz","doi":"10.1002/aqc.4260","DOIUrl":"https://doi.org/10.1002/aqc.4260","url":null,"abstract":"<p>The European Standard EN 16039:2011 provides guidelines for assessing lake hydromorphology within the Water Framework Directive and includes methods for estimating volume, mean depth, and maximum depth based on statistical models applied to data from topographic maps. We tested the predictive accuracy of these models using independently collected bathymetric data from 35 Swedish lakes. The models had no predictive power, and the maximum depth predictions were inversely correlated with the observed values. The mean absolute percent error was 46% for volume and mean depth, and 85% for maximum depth. The models are flawed and should not be used.</p>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 10","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aqc.4260","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142447511","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}