Why aquatic scientists should use sulfur stable isotope ratios (ẟ34S) more often

Chemosphere, Год журнала: 2024, Номер 355, С. 141816 - 141816

Опубликована: Март 29, 2024

Over the last few decades, measurements of light stable isotope ratios have been increasingly used to answer questions across physiology, biology, ecology, and archaeology. The vast majority analyse carbon (δ13C) nitrogen (δ15N) isotopes as 'default' isotopes, omitting sulfur (δ34S) due time, cost, or perceived lack benefits instrumentation capabilities. Using just isotopic can produce results that are inconclusive, uncertain, in worst cases, even misleading, especially for scientists new use interpretation data. values more regularly has potential mitigate these issues, given recent advancements lowered measurement barriers. Here we provide a review documenting case studies with real-world data, re-analysing different biological topics (i.e. niche, diet, movement bioarchaeology) without highlight various strengths this applications. Each study demonstrates how exclusion comes at detriment results, often leading very outputs, missing valuable discoveries entirely. We also include preliminary meta-analysis trophic discrimination factor (TDF) which suggest small (mean −0.4 ± 1.7 ‰ SD) but taxa-dependent mean discrimination. Given relying on currently underpin most our understanding ecological processes, concerning implications. Collectively, examples strongly researchers planning their research should incorporate where possible, systems now be carbon, nitrogen, sulfur.

Язык: Английский

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Abundance and Distribution of Blue Swimmer Crab in Response to Environmental Variation Across Two Contrasting Estuaries

Estuaries and Coasts, Год журнала: 2024, Номер 47(4), С. 1064 - 1074

Опубликована: Март 13, 2024

Abstract Portunid crabs are an iconic, high value species in NSW, but catches highly variable space and time. Substantial variation biomass is observed both exploited unfished populations, environmental effects on distribution abundance important factor contributing to this variability. Predicting responding variability a challenge for management sustainability of populations. We examine spatial temporal Blue Swimmer Crab ( Portunus armatus ) over 2.5 year trapping survey two temperate estuaries that differ tidal flow riverine input. Specifically, monthly catch rates throughout the estuary examined alongside temperature conductivity. In Wallis Lake, shallower with restricted entrance, water conductivity impacted there was no evidence pulses freshwater had major impact. For 10 °C increase population average shifted ~ 700 m closer ocean. Males were consistently located slightly further into compared females, convincing estuarine egression response lower salinity. Port Stephens, deeper, estuary, also abundance, while males more dispersed than within did not appear be influenced by temperature, or flow. These results highlight links between nuanced relationships geomorphology Crab.

Язык: Английский

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Influence of thermal effluent on biological traits of crabs in a recreational fishery

Journal of Thermal Biology, Год журнала: 2025, Номер unknown, С. 104150 - 104150

Опубликована: Июнь 1, 2025

Язык: Английский

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Restoring blue carbon ecosystems unlocks fisheries' potential

Restoration Ecology, Год журнала: 2023, Номер 32(1)

Опубликована: Ноя. 9, 2023

Globally, blue carbon ecosystems, including salt marsh, mangroves, and seagrasses, the associated ecosystem services they provide, have declined substantially. In response, restoration has recently increased but scale urgency of these activities been limited by lack economic drivers. Herein, a multidisciplinary approach is presented that links hydrologic with ecologic outputs to highlight potential for commercial fisheries could arise from restoring drained floodplain. Initially, stable isotope models are used predict return Eastern school prawn (approximately 300 kg yr −1 ha ). Hydrologic then applied determine area marshes mangroves (over 2,000 ha) be potentially restored via tidal introduction. Together, results indicate ecological in this region contribute an annual benefit approximately 230 tons additional harvest, which valued at $3.1 ± 1.3 million AUD fisheries. This would represent growth nearly 50% current harvest state. Given assessment excludes other values gained, such as species value, sequestration, biodiversity, flood control, it represents conservative financial estimate. Overall, analysis highlights co‐benefits projects, how business cases large‐scale projects developed using approaches.

Язык: Английский

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Ecosystem Service Valuation of Blue Carbon Habitats: A Review for Saltmarshes and Seagrasses

Journal of Ocean and Coastal Economics, Год журнала: 2023, Номер 10(1)

Опубликована: Ноя. 14, 2023

Oceans and coastal marine ecosystems, particularly vegetated habitats such as mangroves, seagrass, saltmarsh, play a significant role in the global carbon cycle long-term sinks. Ensuring that these continue to function sinks do not become sources of emissions through habitat degradation is vital for climate environmental policy goals. These blue ecosystems also provide number other important ecosystem services societies. Understanding economic value necessary make informed decisions weigh costs benefits management plans. This paper reviews current literature on service valuation associated with two types; saltmarshes seagrasses. It examines methods used identifies remaining gaps terms benefit values are underrepresented. The results indicate saltmarsh seagrass wealth can be valued using established methods, but there remains knowledge deficit certain regions when it comes estimation particular values.

Язык: Английский

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Tolerance of the Australian halophyte, beaded samphire, Sarcocornia quinqueflora, to Pb and Zn under glasshouse conditions: Evaluating metal uptake and partitioning, photosynthetic performance, biomass, and growth

Aquatic Toxicology, Год журнала: 2024, Номер 270, С. 106887 - 106887

Опубликована: Март 11, 2024

Saltmarsh sediments are susceptible to accumulation of excessive concentrations anthropogenically elevated metals such as lead (Pb) and zinc (Zn). The resident salt tolerant plants saltmarsh ecosystems form the basal underpinning these ecosystems. As such, metal-associated adverse impacts on their physiology can have detrimental flow-on effects at individual, population, community levels. present study assessed partitioning ecologically relevant Pb, Zn, combination in a dominant Australian species, Sarcocornia quinqueflora. Plants were hydroponically maintained under glasshouse conditions for 16 weeks exposure either Pb (20 µg l–1), Zn (100 or mixture. We evaluated chronic toxicological single mixed metal treatments with reference uptake partitioning, photosynthetic performance, pigment concentration, biomass growth. Lead was more toxic than appeared an antagonistic effect S.quinqueflora terms uptake, concentrations, Indeed, tolerance index 55 % treated compared 77 73 Pb+Zn plants. Finally, quinqueflora primarily accumulated both roots exceeding unity whilst translocation above ground tissues restricted regardless treatment. This suggests that S. may be suitable phytostabilisation particularly presence Zn.

Язык: Английский

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Imaging Sonar Reveals Diel Movement of Fish Throughout a Developed Australian Estuary

Estuaries and Coasts, Год журнала: 2023, Номер 47(3), С. 880 - 893

Опубликована: Дек. 14, 2023

Язык: Английский

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Sub-lethal effects of metal(loid) contamination on the halophyte Sarcocornia quinqueflora with links to plant photosynthetic performance and biomass – A field study

Marine Pollution Bulletin, Год журнала: 2024, Номер 205, С. 116569 - 116569

Опубликована: Июнь 17, 2024

Two saltmarsh locations within Lake Macquarie, NSW, Australia were selected to investigate the uptake and partitioning of metal(loid)s Cu, Zn, As, Se, Cd Pb in Australian halophyte, Sarcocornia quinqueflora associated sub-lethal effects on plant health, including photosynthetic performance, biomass, productivity. Metal(loid)s primarily accumulated roots (BCF > 1). Barriers transport observed at root non-photosynthetic stem transition (TF < 1) for all metal(loid)s, suggesting this species is suitable phytostabilisation. Sediment tissue metal(loid) concentrations significantly correlated with performance biomass. As such, action sediment subsequent effect biomass S.quinqueflora appear be targets molecular analyses further elucidate mechanisms responsible adverse development outcome pathways.

Язык: Английский

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Recreational fishing expenditure as an indicator of coastal wetland habitat value

Environmental Science Advances, Год журнала: 2024, Номер 3(9), С. 1259 - 1270

Опубликована: Янв. 1, 2024

We present a new approach for partitioning expenditure on recreational fishing to coastal wetland habitats. The value of habitats fisheries was considerable, exceeding similarly derived values commercial fisheries.

Язык: Английский

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