Relationships between pond water and tilapia skin microbiomes in aquaculture ponds in Malawi

Aquaculture, Год журнала: 2022, Номер 558, С. 738367 - 738367

Опубликована: Май 21, 2022

Язык: Английский

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Progress and Direction in the Use of Stable Isotopes to Understand Complex Coral Reef Ecosystems: A Review

CRC Press eBooks, Год журнала: 2022, Номер unknown, С. 373 - 432

Опубликована: Ноя. 16, 2022

Coral reef ecosystems are exceptionally complex with a myriad of trophic pathways and consumer relationships.The application stable isotopes (SIs) offers numerous advantages over traditional methods towards understanding these intricate systems.We summarise current knowledge derived from the rapidly increasing SI literature base identify potential gaps future directions for use SIs in coral ecosystem studies.Using topic modelling, form text mining, on 236 identified published works, we determined that research reefs broadly falls into five major topics.(1) Organic matter dynamics: analyses (SIA) have quantified substantial variability autochthonous (internal) allochthonous (external) fluxes across reefs.(2) Holobiont metabolism: nutrient acquisition, translocation partitioning, responses to various endogenous exogenous factors been explored through SIA.(3) Trophic niches: SIA has indicated considerable variation resource facilitates cooccurrence high densities consumers, emphasising many categorisations often too simplistic.(4) Fish diet habitat connectivity: revealed how ontogenetic, larval mobile predator movements link adjacent ecosystems.(5) Environmental drivers (both natural anthropogenic): can track anthropogenic inputs, revealing impacts human-derived pollutants systems.There number important gaps, however.Few studies compare feeding strategies guilds, is biased fish hard corals.Furthermore, few examine multiple taxonomic groups situ or consider environmental drivers.Studies also tend ignore underlying, but potentially substantial, spatiotemporal baselines as demonstrated 741 mean values extracted literature, making inferences based small variations problematic.Given face global decline, need be addressed while acknowledging limitations SIA; careful enhance processes driving change iconic marine ecosystems.

Язык: Английский

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An update on the biological parameters of the Norway lobster (Nephrops norvegicus) in the northwestern Mediterranean Sea

ICES Journal of Marine Science, Год журнала: 2024, Номер 81(3), С. 426 - 439

Опубликована: Фев. 2, 2024

Abstract The Norway lobster, Nephrops norvegicus, is one of the most valuable fishery resources in many coastal countries Mediterranean Sea and northeastern Atlantic Ocean. In Sea, several stocks are being overexploited, with ecological, economic, social consequences. To perform an adequate stock assessment provide guidance on maximum sustainable yield, reliable biological parameters species required. Considering that may change over time overexploited populations, present study, we updated key for N. norvegicus northwestern Sea: size at which 50% (L50) females were reproductive condition, length–weight relationship, individual structure. Moreover, daily landings combined spatial position vessels tracked by their Vessel Monitoring System (VMS), to obtain information geographical distribution series Landings Per Unit Effort (LPUE), as well total from 2008 2021. Our results suggest overexploitation resource, revealing a severe reduction maturity, earlier spawning brooding period, clear decrease LPUE time.

Язык: Английский

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Ecosystem‐level reference points: Moving toward ecosystem‐based fisheries management

Marine and Coastal Fisheries, Год журнала: 2024, Номер 16(2)

Опубликована: Март 21, 2024

Abstract Objective To support the movement in marine fisheries management toward ecosystem‐based by exploring ecosystem‐level reference points (ELRPs) as an option for managing at ecosystem level. An ELRP is harvest level or indicator with one more associated benchmarks thresholds (i.e., targets, limits) to identify, monitor, maintain desirable conditions and functions. Methods This paper explores development implementation of ELRPs sustainability, help identify when changes that impact resources occur, foster discussions trade‐offs decisions. Result We organize existing potential into five categories (statistical analysis nonlinear dynamics tipping points, productivity, trophic information, biodiversity, human dimensions), provide overview analytical methods can estimate benchmarks, examples where are being used today, evaluate pros cons different categories. also attempt next steps scientists managers further science, development, application ELRPs. Conclusion Ecosystem‐level be a proactive accountability mechanism achieve objectives preferred operating space early warning (e.g., points) could imminent if current biological ecological trends system continue.

Язык: Английский

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A NOAA Fisheries science perspective on the conditions during and after COVID-19: challenges, observations, and some possible solutions, or why the future is upon us

Canadian Journal of Fisheries and Aquatic Sciences, Год журнала: 2020, Номер 78(1), С. 1 - 12

Опубликована: Ноя. 2, 2020

Many fisheries and marine science organizations are working to determine how meet their missions in the midst of COVID-19 outbreak. As such, it seems prudent exchange ideas, share knowledge, initiate a discussion among us. scientific leadership team for NOAA Fisheries, we wanted offer some perspectives. Others also evaluating impacts but from perspective addressing tactical, day-to-day concerns restarting operations various fisheries-oriented organizations. Thus, seemed appropriate us explore potential challenges posed by purposefully ascertain whether there strategic opportunities improving conduct our operations. We need find ways mitigate effects on mission glean information responses while crisis. recommendations that end these thoughts not as having solved every problem, learn each other, compare across organizations, engage dialogue within discipline advance much-needed changes.

Язык: Английский

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