Journal: Marine Ecology Progress Series

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Inter-Research

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2012 - 201942020 - 20212
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Publications 1 - 6 of 6
  • Habitat characteristics and metapopulation dynamics of the copepod Tigriopus californicus
    Item type: Journal Article
    Altermatt, Florian; Bieger, Annette; Morgan, Steven G. (2012)
    Marine Ecology Progress Series
  • Dissolved organic matter from tropical peatlands reduces shelf sea light availability in the Singapore Strait, Southeast Asia
    Item type: Journal Article
    Martin, Patrick; Sanwlani, Nivedita; Lee, Tiffany Wan Qi; et al. (2021)
    Marine Ecology Progress Series
    Shelf seas provide valuable ecosystem services, but their productivity and ecological functioning depend critically on sunlight transmitted through the water column. Anthropogenic reductions in underwater light availability are thus a serious threat to coastal habitats. The flux of light-absorbing coloured dissolved organic matter (CDOM) from land to sea may have increased world-wide, but how this has altered the availability and spectral quality of light in shelf seas remains poorly known. We present time-series data from the Sunda Shelf in Southeast Asia, where the monsoon-driven reversal in ocean currents supplies water enriched in CDOM from tropical peatlands for part of the year, resulting in 5- to 10-fold seasonal variation in light absorption by CDOM. We show that this terrigenous CDOM can dominate underwater light absorption at wavelengths up to 500 nm, and shift the underwater irradiance spectrum towards longer wavelengths. The seasonal presence of terrigenous CDOM also reduces the 10% light penetration depth by 1-5 m, or 10-45%. We estimate that on average 0.6 m, or 25%, of this terrigenous CDOM-mediated shoaling might be attributable to the enhanced input of dissolved organic matter following peatland disturbance. The seasonal change in the light environment is correlated with changes in phytoplankton absorption spectra that suggest a photo-acclimation response, and we infer that terrigenous CDOM likely contributes to limiting the depth distribution of photosynthetic corals. The results reveal an ecologically important but largely overlooked impact of human modifications to carbon fluxes that is likely increasingly important in coastal seas.
  • Recruitment decline in North Sea herring is accompanied by reduced larval growth rates
    Item type: Journal Article
    Payne, Mark R.; Ross, Stine D.; Clausen, Lotte Worsøe; et al. (2013)
    Marine Ecology Progress Series
  • Light stimulates swimming behavior of larval eastern oysters Crassostrea virginica in turbulent flow
    Item type: Journal Article
    Wheeler, Jeanette D.; Luo, Elaine; Helfrich, Karl R.; et al. (2017)
    Marine Ecology Progress Series
  • Unified natural mortality estimation for teleosts and elasmobranchs
    Item type: Journal Article
    Dureuil, Manuel; Aeberhard, William H.; Burnett, Kirsti A.; et al. (2021)
    Marine Ecology Progress Series
    Natural mortality, M, is a key parameter for the assessment and management of living resources but is difficult to observe directly. Therefore, M is often estimated indirectly from life history traits, and it is typically assumed to be invariant over size, age, and time. Such indirect estimators are particularly relevant for data-poor species, including many elasmobranchs (sharks, skates, and rays). However, as commonly used estimators were developed largely with teleost (bony fish) data, their performance for elasmobranchs is currently unknown. Here, we show that the relationship between observed maximum age, tmax, and mean adult M is not significantly different between teleosts (n = 105) and elasmobranchs (n = 15). Furthermore, data on 16 teleosts and 2 elasmobranchs suggest that juvenile M can be estimated from adult M when juvenile M is inversely proportional to body length and when a reference length can be provided. We introduce this reference length as the length at the age after which M is assumed to be constant and demonstrate how it can be estimated using the von Bertalanffy growth function and the proportion surviving to tmax, which is shown to be approximately 1-2%. The data utilized here also suggest that if tmax is unknown it can be estimated from growth information by assuming that 99% of the asymptotic maximum length is reached at tmax. Based on these life history parameters, the same indirect M estimators can be utilized for teleosts and elasmobranchs, which may contribute to more reliable assessments of data-poor species.
  • Desperate planktotrophs: decreased settlement selectivity with age in competent eastern oyster Crassostrea virginica larvae
    Item type: Journal Article
    Meyek, Kristin S.; Wheeler, Jeanette D.; Houlihan, Erin; et al. (2018)
    Marine Ecology Progress Series
Publications 1 - 6 of 6