Marine Ecology-An Evolutionary Perspective最新文献

{"title":"Evaluation of fate of organic matter in sediment through microcosm experiments","authors":"Laxman Gardade,&nbsp;Lidita Khandeparker","doi":"10.1111/maec.12807","DOIUrl":"10.1111/maec.12807","url":null,"abstract":"<p>Laboratory microcosm experiments help to understand the degradation pattern of different sources derived from organic matter (OM) at the sediment–water interface and relate it to field processes. Microcosm experiments were carried out for 65 days to assess the degradation of organic materials such as diatoms, zooplankton, and mangrove leaves using source-specific fatty acid (FA) biomarkers. The viable bacterial population in the microcosm sediment was low on day 1, but on day 3, it increased substantially by two to threefold in all the treatments. An increase in the bacterial population resulted in a decrease in the FAs specific to organic materials during the initial incubation phase (10 days), suggesting the degradation of organic materials derived from different sources. The FAs specific to diatoms showed faster degradation when compared to zooplankton and mangrove-specific FAs. The degradation of FAs was influenced by the nature of the source material, unsaturation of FAs, and the sediment type. Sandy sediment facilitated higher degradation of diatom and zooplankton-specific FAs, whereas mangrove-specific FAs showed higher degradation in silty-clay sediment. Thus, bacterial community composition coupled with the habitat characteristics, the OM composition, and the grain size of the sediment, influenced the degradation of FAs. The degradation of mangrove-specific long-chain FAs was ~1.11–2.5 times higher when spiked with plankton-derived labile OM from mixed sources, which otherwise took a longer time for degradation pointing toward co-metabolism (priming effect), which could play a significant role in the cycling of terrestrial plant-derived OM in an estuarine ecosystem.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"45 4","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140939822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An in silico study to identify stress-induced microRNAs and their targets from a mangrove Avicennia marina","authors":"Anjali Sharma,&nbsp;Mousumi Datta,&nbsp;Prajita Kundu,&nbsp;Aditi Nayak","doi":"10.1111/maec.12806","DOIUrl":"10.1111/maec.12806","url":null,"abstract":"<p>Abiotic stresses encompass different environmental stimuli and constantly affect plant sustainability throughout their lifetime. Plants have developed several complex mechanisms to respond against these abiotic stresses. Studies have shown that microRNAs (miRNAs) effectively reduce stress-responsive genes that significantly help plants tolerate abiotic stresses such as drought, salinity, temperature, and heavy metals. The regulation of such genes by miRNAs not only aids in plant growth and development but also controls physiological processes such as identifying floral organs, leaf morphogenesis, and root development. As per the information, miRNA plays an important role in stress regulation and regulates homeostasis in mangrove plants such as <i>Rhizophore apiculata.</i> Several modern technologies and approaches have been developed to determine these stress response miRNAs. The targeted genes of miRNAs are transcription factors that further control a set of down and upstream genes to affect physiological response. This paper explores the miRNAs found in a mangrove plant <i>Avicennia marina</i>. The plant contains many miRNAs and knowledge of miRNAs – their development, roles, functions, and target genes under abiotic stress conditions.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"45 4","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140887237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigating the timing of spawning of two sea urchins (Tripneustes gratilla and Toxopneustes pileolus)","authors":"Shih-jie Lin,&nbsp;Chia-Hsuan Hsu,&nbsp;Keryea Soong","doi":"10.1111/maec.12802","DOIUrl":"10.1111/maec.12802","url":null,"abstract":"<p>Many marine organisms broadcast gametes for external fertilization, thus conspecifics need to concentrate the time of gamete release through synchronization with environmental factors. We investigated the timing of spawning in two sea urchin species, <i>Tripneustes gratilla</i> and <i>Toxopneustes pileolus</i>, by assessing the spawning potential of individuals using both surveys and experiments in southern Taiwan from March to November 2010. We developed a new method to observe the spawning potential without sacrificing any individuals, defining those individuals-initiated spawning within 30 min after 10 s of exposure to air as having the spawning potential. We discovered that the percentage of individuals with spawning potential, that is, the spawning ratios of the population, varied greatly from 0% to 80% in <i>To. pileolus</i> and from 0% to 50% in <i>Tr. gratilla</i> within the reproductive seasons. We evaluated the possibility of a lunar/semilunar rhythm of spawning ratios of the population and tested three environmental factors, that is, light intensity, tide, and temperature that could potentially affect the spawning potential of the sea urchins by experiments. Individuals with spawning potential were neither randomly nor evenly distributed among days but were aggregated on certain days; however, no lunar/semilunar rhythm of the spawning ratios was detected within the reproductive season. The possible role of the tidal factor within a day was not found in experiments in either species. However, when water temperature was &gt;27°C in our surveys, significantly higher spawning ratios were observed in <i>To. pileolus</i>, but not in <i>Tr. gratilla</i> in the reproductive season. A further temperature experiment in <i>To. pileolus</i> supported the positive role of high temperature on the spawning ratios of individuals. In addition, <i>To. pileolus</i> was more likely to spawn during the day than at night, and the light/dark experiments suggested that the spawning potential was controlled by an endogenous biological clock rather than by the ambient light conditions directly. The lack of rhythmic pattern and yet concentrated spawning of these sea urchins may be adaptive to avoid predation.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"45 3","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140590355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantifying direct and indirect linkages between seagrasses, environment and associated macrofauna in a temperate lagoon","authors":"Cloverley M. Lawrence","doi":"10.1111/maec.12804","DOIUrl":"https://doi.org/10.1111/maec.12804","url":null,"abstract":"<p>Seagrass ecosystems play a vital role in marine environments, providing essential services, including physical habitat that supports a species diversity critical to robust trophic structures. However, seagrass loss due to various influences raises concerns about the persistence of these ecosystems. Seagrass-associated macrofauna serve as indicators of environmental health, noting change or stability. This study investigated the structural and environmental drivers influencing macrofaunal communities associated with seagrass (<i>Zostera capensis</i>) in a temperate lagoon. Variation in macrofaunal community structure across phenotypically distinct seagrass populations found large-leaved morphotypes in deeper intertidal stands to support higher species diversity and richness. Conversely, small-leaved populations in higher shore positions had a greater abundance of desiccation-resistant gastropods. Seasonal differences were significant, with higher abundances generally observed during spring and summer, while diversity and richness peaked in autumn and winter. Structural equation modelling revealed shoot densities and leaf width to have positive direct effects on macrofaunal abundance, while temperature and tidal exposure produced significant indirect effects. Temperature had a direct effect on seagrass structure and significantly influenced five out of six seagrass metrics measured. Observations of seagrass distribution in the lagoon indicate significant declines in large-leaved populations with likely adverse consequences for associated macrofauna and related trophic levels.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"45 2","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/maec.12804","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140546756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Happy families? Insight into the coexistence between the curled octopus (Eledone cirrhosa) and common octopus (Octopus vulgaris) in waters around the UK","authors":"C. J. Barrett,&nbsp;A. Brazier","doi":"10.1111/maec.12803","DOIUrl":"10.1111/maec.12803","url":null,"abstract":"<p>This case study investigated the co-occurrence of the curled octopus (<i>Eledone cirrhosa</i>) and common octopus (<i>Octopus vulgaris</i>), in waters around the United Kingdom. The findings suggest that coexistence may be maintained because of the lack of competition for <i>E</i>. <i>cirrhosa</i> against the seemingly declining <i>O</i>. <i>vulgaris</i> populations, and that habitat and temporal partitioning are the likely mechanisms. It is contemplated whether species misidentification may an important factor in masking the accuracy of population dynamics of co-occurring octopus species, and, as such, potential uncertainty in octopus coexistence and any future fishery management decisions. It is confidently suggested that, currently, only two octopus species are resident to UK waters. Now, further studies should include diet partitioning to determine whether diet partitioning is a mechanism for <i>E</i>. <i>cirrhosa</i> and <i>O</i>. <i>vulgaris</i> coexistence, and monitoring may make us understand their population dynamics.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"45 3","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140361054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatial and temporal recruitment variability of sandy subtidal megabenthic populations on an open coastline influenced by a tsunami caused by the 2011 Tohoku earthquake","authors":"Daisuke Sugiura,&nbsp;Shotaro Fukui-Hashizume,&nbsp;Hideki Noro,&nbsp;Yoshikazu Fujikawa","doi":"10.1111/maec.12801","DOIUrl":"10.1111/maec.12801","url":null,"abstract":"<p>The spatial distribution and size structure of two infaunal filter-feeding bivalves, that is, Sakhalin surf clam <i>Spisula sachalinensis</i> (Schrenck, 1862) and dwarf sunray surf clam <i>Mactra crossei</i> (Dunker, 1877), and an epibenthic deposit feeder, namely the sand dollar <i>Scaphechinus mirabilis</i> (A. Agassiz, 1864), were investigated on an open sandy beach in northern Japan after the tsunami caused by the 2011 Tohoku earthquake. Settlement of <i>S. sachalinensis</i> was relatively abundant in the 2011- and 2012-year classes, but then substantially decreased until the early months of 2013. The 0+-year-old distribution was associated mainly with a depth gradient and weakly with the median grain size of the sediment. <i>Mactra crossei</i> had (1) an inverse trend in long-shore variation in abundance at 2+ years of age and (2) later-post-settlement processes that regulated its population dynamics, compared to those of <i>S. sachalinensis</i>. The 2010-year classes for both Mactridae species survived until 2+ years of age, although their abundance showed a high level of spatial variation. <i>Scaphechinus mirabilis</i> showed fine-scale spatial variation in their recruitment dynamics. The cross-shore distribution of <i>S. mirabilis</i> showed a clear ontogenetic shift from shallow to deep water. The cross-shore distribution of small <i>S. mirabilis</i> (&lt;40 mm in test diameter) overlapped that of the juvenile <i>S. sachalinensis</i>, but their interaction was unclear. Overall, the level of spatial and temporal recruitment variation was relatively high in each species. However, the tsunami has scarcely influenced the cross-shore distribution and population structure of each species.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"45 3","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140168180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The eternal life of taxonomic monographs: The series on the Fauna and Flora of the Gulf of Naples","authors":"Ferdinando Boero","doi":"10.1111/maec.12800","DOIUrl":"10.1111/maec.12800","url":null,"abstract":"<p>Taxonomic monographs, such as those of the Fauna and Flora of the Gulf of Naples, have almost eternal life, in terms of scientific relevance, and keep being cited even after centuries.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"45 2","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140075866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Epizoic yellow sponge (Poecilosclerida, Demospongiae) expansion on living Scleractinian corals in Bintan, Riau Archipelago, Indonesia","authors":"Ofri Johan,&nbsp;Nicole J. de Voogd,&nbsp;Agus Budianto,&nbsp;Sonja Peters,&nbsp;Samir M. Aljbour,&nbsp;Andreas Kunzmann","doi":"10.1111/maec.12796","DOIUrl":"10.1111/maec.12796","url":null,"abstract":"<p>Coral reef ecosystems in Indonesia are under threat due to changes in the environment driven by global climate change, along with local disturbances such as sedimentation and eutrophication. Consequently, comprehensive coral reef monitoring activities have been initiated at numerous locations across Indonesia. In this study, the findings from coral reef health surveys across 14 reef sites (within 40 hectares) in the Bintan area (Riau Archipelago, Indonesia; 100 km southeast of Singapore) revealed a potentially novel epizoic yellow sponge species (<i>Phorbas</i> sp.) that overgrows coral colonies. This species, tentatively classified as a new <i>Phorbas</i> sp. (order Poecilosclerida: family Hymedesmiidae), was identified through a combined approach employing classical taxonomic methods along with DNA barcoding using the cytochrome c oxidase I (COI) gene. At every site, three permanent 20-m transects were established to annually monitor live coral coverage and species composition between 2014 and 2017. The survey indicated a notable change in the overall coral cover during this period. The abundance of coral diseases was investigated in 2014 and 2017. Additionally, the progress of <i>Phorbas</i> sp., was closely monitored (i.e., every second day for one week) at Bintan Island (site 11) during the dry season in August 2017. This approach aimed to approximate the relative impact of each incident on the coral's condition. The results indicated that the most comprehensive change occurred due to the overgrowth of <i>Phorbas</i> sp., which affected 12 scleractinian coral species across eight genera in almost all sites except one. The abundance of this epizoic sponge infestation was highest at Pulau Beralas Pasir (site 10), constituting 22.9% of all recorded life forms, and lowest at Pulau Pangkil-Besar (site 13), with only 0.7%. The expansion of the thin yellow sponge tissue was estimated to increase by up to 0.51 ± 0.48 cm² per day on <i>Porites</i> coral.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"45 2","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/maec.12796","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139954974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Macoma calcarea (Gmelin, 1791), a poorly studied bivalve, in the Kara Sea: Distribution and growth variability","authors":"Kseniya N. Lisitsyna,&nbsp;Alexandra V. Gerasimova,&nbsp;Nadezhda A. Filippova","doi":"10.1111/maec.12798","DOIUrl":"10.1111/maec.12798","url":null,"abstract":"<p><i>Macoma calcarea</i>, one of the most common bivalves in the infauna of the Arctic seas of Russia, is still poorly investigated from an ecological viewpoint. We studied the distribution and growth of <i>Macoma</i> in the southwestern part of the Kara Sea. The samples were obtained at 119 stations at depths from 4 to 415 m in 2012–2013. The main trends in the distribution of this species corresponded to its feeding type (deposit-feeder), the biogeographic affiliation and the features of reproductive ecology. <i>Macoma calcarea</i> in the study area were mainly concentrated at depths of 20–50 m. Their density and biomass were, respectively, eight and two times higher on silty sediments than on sandy ones. The results of age assessment of <i>M. calcarea</i> by the external growth marks and the shell cross-sections were quite similar. However, age determination based on internal growth marks was found to be preferable for older individuals and individuals with heavily eroded shells. Group growth rate of <i>M. calcarea</i> was not very sensitive to environmental conditions. No site-to-site variability in the growth characteristics was found. The maximum size and age of <i>M. calcarea</i> (37 mm and 21 years respectively), as well as the average annual growth rate (about 2 mm/year), were close to the values of these parameters in other parts of the distribution of this species.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"45 3","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139762395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of a cyclonic eddy on phytoplankton: A bioassay experiment","authors":"Alexander S. Mikaelyan,&nbsp;Anna V. Lifanchuk,&nbsp;Sergey A. Mosharov,&nbsp;Alexey V. Fedorov,&nbsp;Irina V. Mosharova,&nbsp;Oksana A. Ocherednik","doi":"10.1111/maec.12797","DOIUrl":"10.1111/maec.12797","url":null,"abstract":"<p>Cyclonic eddies often increase the primary productivity of marine ecosystems. However, the study of their influence on the taxonomic structure and productivity of plankton is complex due to the short-term and mesoscale nature of the action of eddies. In a laboratory bioassay experiment, we simulated two mechanisms of eddy's effect on the deep phytoplankton maximum: an increase in the upward flow of deep nutrients and illumination. Doubling of nutrient additions compared to control increased chlorophyll's specific growth rate (SGR) 1.7-fold over 12 days while doubling the light intensity increased SGR by 3.5 times. During the first 4 days of the experiment, at the exponential growth stage, SGR of carbon biomass was maximum with the simultaneous doubling of nutrients and light (0.44 day⁻¹). It was statistically significantly higher than at increased nutrients but not light. These results suggest that nutrient deficiencies were less crucial for phytoplankton growth than light. The increase in the phytoplankton biomass was mainly due to the growth of a large-celled diatom <i>Pseudosolenia calcar-avis</i>. It showed the highest SGR (1.15–1.28 day⁻¹) at increased nutrients and/or light, resulting in high wet biomass of 2–3 g m⁻³ over 4 days. The ecological meaning of the obtained results is as follows. First, in the eddy, where the deep phytoplankton maximum is located close to the nutricline, its rise to more illuminated layers results in higher phytoplankton growth than the shortening distance to the nutricline. Second, increases in the upward flow of nutrients and light intensity, separate or simultaneous, stimulate the rapid reproduction of large-celled diatoms that increase the carbon-to-chlorophyll ratio by 2–4 times. Third, exposure to a typical Black Sea mesoscale cyclonic eddy can lead to phytoplankton blooms in the thermocline within a few days.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"45 2","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139762241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}