Aquatic Conservation-Marine and Freshwater Ecosystems最新文献

{"title":"Local Ecological Knowledge as a Conservation Tool for Identifying Threats to the Pacific Goliath Grouper (Epinephelus quinquefasciatus) in Panama","authors":"Carolina Chong-Montenegro,&nbsp;Gustavo A. Castellanos-Galindo,&nbsp;D. Ross Robertson","doi":"10.1002/aqc.70021","DOIUrl":"https://doi.org/10.1002/aqc.70021","url":null,"abstract":"<div>\u0000 \u0000 <p>The Pacific goliath grouper, <i>Epinephelus quinquefasciatus</i>, is the largest reef fish of the tropical Eastern Pacific. The IUCN categorizes it as Data Deficient because of the lack of population data and the risk posed by fishing. Using fishers' local ecological knowledge, we assessed Pacific goliath grouper historical catch trends along Panama's Pacific coast. Handline and speargun catches showed significant declines in the average weight of Pacific goliath grouper landed from 1958 to 2018. Market demand and environmental degradation were identified as primary drivers of the Pacific goliath grouper perceived decline. Local ecological knowledge demonstrated that valuable fisheries information can be derived and used to inform species' population trends.</p>\u0000 </div>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142708349","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":"Faunal Composition of the Sumisu Caldera Hydrothermal Vent Field as a Key Baseline for Conservation in Light of Deep-Sea Mining","authors":"Chong Chen,&nbsp;Natsumi Hookabe,&nbsp;Rina Hashimoto,&nbsp;Satoshi Shimooka,&nbsp;Shoki Shiraki,&nbsp;Daisuke Uyeno,&nbsp;Shinsuke Kawagucci","doi":"10.1002/aqc.70009","DOIUrl":"https://doi.org/10.1002/aqc.70009","url":null,"abstract":"<p>Hydrothermal vents are biodiversity hotspots on the deep seafloor powered by chemosynthetic primary production, inhabited by a specially adapted fauna whose composition varies between regions. Sumisu Caldera, located approximately 500 km south of Tokyo, hosts a hot vent with an unusual species composition among the Izu–Ogasawara Arc sites and has been suggested as a priority site for conservation in light of upcoming deep-sea mining for massive sulfides. However, this was based on just five species serendipitously recorded from geological surveys. Here, we carried out the first comprehensive biological sampling of Sumisu using two dives of the human-occupied vehicle <i>Shinkai 6500</i>. Together with literature records, we count a total of 54 animal species of which at least 25 are endemic to chemosynthetic ecosystems, drastically increasing the known faunal diversity—including three sponges, one cnidarian, 12 molluscs, 23 annelids, 13 arthropods, one echinoderm, and one fish. The presence of sediments facilitating the occurrence of burrowing species and three non-endemic predators contribute to the high species richness. Our findings make Sumisu the most species-rich vent community in the entire northwestern Pacific and our work serves as a prime example for detailed faunal surveys to obtain key piece of baseline data for future environmental assessments. Although the apparent lack of massive sulfide deposits means Sumisu is unlikely to be an immediate target of mining, its close distance to Bayonnaise Knoll with a major deposit and the possibility that it acts as a critical stepping-stone population for many species, as well as the presence of several endangered ones, presents a case for its protection.</p>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aqc.70009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142724260","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":"Quantitative Comparison of ROV and Diver-Based Photogrammetry to Reconstruct Maerl Bed Ecosystems","authors":"Iona L. R. Paterson,&nbsp;Kathryn E. Dawson,&nbsp;Andrew O. M. Mogg,&nbsp;Martin D. J. Sayer,&nbsp;Heidi L. Burdett","doi":"10.1002/aqc.70007","DOIUrl":"https://doi.org/10.1002/aqc.70007","url":null,"abstract":"<p>In a time of ever-increasing pressure on the coastal ocean and rising costs, the development of effective and efficient methods for assessing the health of marine ecosystems is becoming essential for continued conservation efforts. Taking advantage of technologies such as remotely operated vehicles (ROVs) may be a way of achieving this, but a quantitative check on the quality of ROV-derived data is necessary. Here, using coralline algae reefs (maerl beds) as a model habitat, we compared 3D seabed reconstructions obtained from structure-from-motion photogrammetry surveys from diver-held and ROV-mounted camera systems. We found that both approaches achieved satisfactory alignment and mm-scale resolution, allowing small-scale features and individual organisms in the maerl bed to be resolved. The higher quality camera system available to divers resulted in generally lower modelling errors, but the spatial extent of surveys was highly restricted. In contrast, although associated with a slightly higher error, we show that much larger areas can be surveys by ROVs—we reconstructed 11,285 m² of seabed in just 400 min of ROV deployment time. Moving forward, we recommend that a hybrid survey approach is adopted: utilising ROV surveys for large-scale monitoring and diver surveys for higher detail insights that are informative for areas with highly complex and fine-scale morphologies (like coralline algae reefs). Here, even small changes in complexity can be indicative of habitat change, and associated species can be small in size so multiscale visual assessment is beneficial.</p>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aqc.70007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142724258","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":"Assessing Potential Spawning and Nursery Habitat Availability in the River Rhine for the Critically Endangered European Sturgeon","authors":"Niels W. P. Brevé,&nbsp;Debora A. J. van Dieren,&nbsp;Marc Weeber,&nbsp;Erik Mosselman,&nbsp;Leopold A. J. Nagelkerke,&nbsp;AlberTinka J. Murk,&nbsp;Anthonie D. Buijse","doi":"10.1002/aqc.70016","DOIUrl":"https://doi.org/10.1002/aqc.70016","url":null,"abstract":"<p>Information about reproductive habitat and migration pathways is of paramount importance to restore migratory fish species. This study assesses the availability of spawning and nursery habitats for the European sturgeon (<i>Acipenser sturio</i>) in the delta and lower Rhine (covering over 350 river kilometres) as part of a larger feasibility assessment for a future restoration of this critically endangered species. The general approach has three steps: (1) the identification of the species' specific habitat requirements, based on a systematic literature review; (2) the collection and preprocessing of data from two countries, including the 1D and 2D modelling of water depths and flow velocities; and (3) GIS-based mapping of spawning and nursery habitat. Based on a HSI score of 1, we identify a total of 0.75 km² as minimal spawning habitat, potentially suitable for approximately 2500 female European sturgeons (one spawning site would use ~300 m²). This is sufficient, as currently, only an estimated maximum number of 750 adults exist. Suitable spawning habitat is mainly located in the German state of North Rhine-Westphalia, whereas suitable nursery habitat is mainly located in the Netherlands. The availability is, however, significantly reduced by coastal infrastructure (damming) and inland navigation. The insights gained can be used to assess the current suitability of the river Rhine for the species' reintroduction and to identify opportunities for habitat restoration and protection for various life stages. The outcomes thus play an essential role in the conservation of the species. In addition, the modelling approach developed could be applied to other northwestern European rivers. This broader application would allow intercomparison and support decisions about which rivers are best suited for future reintroduction of the critically endangered European sturgeon.</p>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aqc.70016","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142724261","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":"New Data on the Distribution of Sperm Whales in the Western Mediterranean Highlights Insufficiency of Currently Proposed Protection Measures","authors":"J.-M. Brotons,&nbsp;M. Cerdá,&nbsp;E. Pirotta,&nbsp;L. Rendell","doi":"10.1002/aqc.70020","DOIUrl":"https://doi.org/10.1002/aqc.70020","url":null,"abstract":"<p>As part of ongoing efforts to protect marine megafauna, especially cetaceans, in the NW Mediterranean Sea, a ‘Particularly Sensitive Sea Area’ (PSSA) was established in July 2023 by the governments of France, Italy, Spain and Monaco through the Marine Environment Protection Committee (MEPC) of the International Maritime Organisation (IMO). This is a legal instrument by which maritime traffic can be subject to advisories or controls to protect the natural environment. While the new PSSA is a significant step forward in terms of marine wildlife protection in the region, the current area only partially includes the waters that play a key ecological role for the conservation of Mediterranean sperm whales (<i>Physeter macrocephalus</i>) around the Balearics Archipelago. This isolated population is currently classified as endangered by the IUCN. Survey data from 2019 to 2022 show how the current area does not include portions of habitat in which calves are more likely to be encountered and risks displacing any maritime traffic that chooses to avoid the voluntary PSSA restrictions into habitat that is sensitive for calf survival. We argue therefore that this PSSA should be augmented to incorporate waters that are an important habitat for this endangered population.</p>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aqc.70020","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707843","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":"Rhodolith Beds in a Shifting World: A Palaeontological Perspective","authors":"Julio Aguirre,&nbsp;Juan C. Braga","doi":"10.1002/aqc.70015","DOIUrl":"https://doi.org/10.1002/aqc.70015","url":null,"abstract":"<p>The occurrence of rhodolith beds in the stratigraphic record from the Cretaceous to the Pleistocene was analysed from published papers. Most data refer to low–mid latitude records of rhodolith beds described in the Tethyan–Paratethyan–Mediterranean domain. The first putative rhodolith beds are from Albian (uppermost Lower Cretaceous) deposits. These rhodolith beds are made up mostly of unattached loose branching corallines as well as of nodular structures. From the Coniacian (Upper Cretaceous) to the Langhian (Middle Miocene), abundance of rhodolith beds shows a generally increasing fluctuating trend with two significant expansions in the Priabonian (late Eocene) and during the Aquitanian–Langhian (Early-Middle Miocene). After the Langhian maximum, rhodolith beds sharply declined to a minimum in the Zanclean (Early Pliocene). During the Pleistocene, they recovered to values similar to those reached in the Langhian. The general increase in rhodolith beds up the Langhian maximum correlates well with global temperature and <i>p</i>CO₂ declines and with an ocean pH increase. The tectonic activity leading to important palaeogeographic changes in the Tethyan–Parathetyan–Mediterranean realm might account for the Serravallian–Zanclean downfall of rhodolith-dominated deposits. The Cretaceous–Pleistocene record of rhodolith beds shows that these ecosystems withstood successfully a highly changing world. The rapid acclimation of particular taxa to environmental changes and the variable reaction of taxa distributed at different water depths can be crucial to understand their success. In this regard, it would be interesting to analyse how different taxa in modern deep rhodolith beds respond to changing oceanic conditions.</p>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aqc.70015","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665780","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":"Spatial Occupancy Models for Data Collected on Stream Networks","authors":"Olivier Gimenez","doi":"10.1002/aqc.70013","DOIUrl":"https://doi.org/10.1002/aqc.70013","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":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aqc.70013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665779","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":"Analysing Turbulence Patterns in Nature-Like Fishways: An Experimental Approach","authors":"Long Zhu,&nbsp;Jinchao Xu,&nbsp;Nanbo Tang,&nbsp;Xiaogang Wang,&nbsp;Sadashiv Chaturvedi,&nbsp;Min Liu,&nbsp;Prashant K. Srivastava","doi":"10.1002/aqc.70014","DOIUrl":"https://doi.org/10.1002/aqc.70014","url":null,"abstract":"<div>\u0000 \u0000 <p>Nature-like fishways are an important measure for restoring fish passage, mitigating the impacts of barriers, and providing valuable habitat benefits in a more natural and effective way than traditional technical fishways. Their ecological advantages make them a preferred solution in many river restoration projects. The turbulence at the fishway's pool is a key challenge in the design of fishways. This study evaluated the hydraulic performance of the nature-like fishway section of the Zongyang Fishway Project in China. This utilized a trapezoidal cross-section with a 1:242 bottom slope, 1:2 side slopes, and an operating water depth of 1–3 m. The bottom and sides were paved with 0.2–0.5 m diameter pebbles to create suitable habitat for bottom-dwelling fish. The target design velocity was 0.7–0.9 m s⁻¹. A physical model was constructed to assess the hydraulic characteristics of the nature-like fishway, including flow velocities within the slots and turbulence levels in the pools. The results showed that the slot velocities were within the target range, the head loss was parallel to the bottom elevation, and the flow field near the bottom mimicked technical fishway conditions, whereas the surface flow resembled open channel flow. Turbulence intensity remained below 60% of the design velocity. These findings provide valuable insights into the hydraulic performance and suitability of this nature-like fishway design for facilitating fish passage of the target freshwater species along with directly aiding to SDGs 6 and 14.</p>\u0000 </div>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665057","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":"Selective Breeding Is an Underexplored Route Towards Conservation of the Endangered Noble Crayfish","authors":"Joel Vikberg Wernström","doi":"10.1002/aqc.70011","DOIUrl":"https://doi.org/10.1002/aqc.70011","url":null,"abstract":"","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664856","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":"Behaviours of Sea Turtles in Shipwrecks in Northeast Brazil","authors":"Alana Thaís Teixeira da Silva Leitão,&nbsp;Maria Danise de Oliveira Alves,&nbsp;José Carlos Pacheco dos Santos,&nbsp;Bruna Bezerra","doi":"10.1002/aqc.4259","DOIUrl":"https://doi.org/10.1002/aqc.4259","url":null,"abstract":"<div>\u0000 \u0000 <p>\u0000 \u0000 </p><ol>\u0000 \u0000 \u0000 <li>Shipwrecks are one of the most common types of artificial reefs. They are home to several sea creatures, including sea turtles. Here, we aim to understand the relationship between sea turtles and shipwrecks by investigating species occurrence, behaviours and food availability in artificial reefs in Pernambuco, Northeast Brazil.</li>\u0000 \u0000 \u0000 <li>To map sea turtle occurrence in shipwrecks, we considered data from the literature, and we inspected 54,145 photos resulting from 867 recreational dives performed in 19 shipwrecks. We then selected four wrecks for systematic behavioural observations through 97 h and 56 min of passive video recordings. We also investigated potential food resources for turtles in these shipwrecks.</li>\u0000 \u0000 \u0000 <li>We identified three turtle species (i.e., <i>Chelonia mydas, Eretmochelys imbricata</i> and <i>Caretta caretta</i>), but most records were juvenile <i>Chelonia mydas</i> individuals using conserved wrecks. We recorded nine behaviours. ‘Resting’ was the predominant activity for all three species, representing over 60% of the records for all species. Their overall activity pattern varied. The wrecks were predominantly encrusted with ascidia, octocoral, sponge and algae—organisms that are part of sea turtles' diet. We highlight the ecological role of the shipwrecks for sea turtles since they may serve as shelter (especially for the juveniles of <i>Chelonia mydas</i>), potentially protecting them against predators and strong currents. The wrecks may also serve as potential feeding areas for sea turtles. We reinforce the need to establish appropriate regulations for recreational dive tourism in shipwrecks in Brazil to avoid disturbing sea turtles in this ecologically important artificial reef.</li>\u0000 </ol>\u0000 \u0000 </div>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"34 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664795","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}