Biodiversity patterns of rock encrusting fauna from the shallow sublittoral of the Admiralty Bay

Krzemińska, Małgorzata; Kukliński, Piotr

doi:10.1016/j.marenvres.2018.03.016

Cited by 10 publications

(6 citation statements)

References 69 publications

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“…Many zoobenthic species were also found to be sensitive to high sedimentation rates. Thus, if the increasing intensity of glacial processes will continue in the upcoming years, the diversity of the encrusting fauna, ascidians in the shallow sublittoral could dramatically decrease (Krzeminska and Kuklinski 2018).…”

Section: Longer Productive Season and Food Base Composition Change/mi...mentioning

confidence: 99%

Polar biocenosis cumulative response to environmental stressors reveals who benefits from marine ice loss

Szeligowska

Moreno

2022

Preprint

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Marine ice is retreating in many sectors of Earth’s polar and subpolar regions. The rates are unprecedented, generating great concern in both scientific and public communities. Despite the expected serious implications, we lack a comprehensive understanding of how ice loss and related processes control marine biota and interactions at different spatiotemporal scales under multiple environmental stressors and drivers of change. We systematically review existing knowledge on how the losses of ice shelves, sea ice, and glaciers affect polar marine biocenosis. We include in situ, remote sensing, and modelling studies on sea ice biota, phyto- and zooplankton, fish, seabirds, phyto- and zoobenthos and marine mammals, covering a time span of three decades (1991-2022). We apply a qualitative ecosystem‐based risk assessment to assess the individual and cumulative response of ecosystem components and related ecosystem services. The most threats and opportunities are expected to manifest in the shallow coastal zones. They include loss of ice habitat, water column darkening due to sediment input with meltwater, increased sedimentation rates, and mechanical damage due to ice scouring, but also gain of marine habitat, lightening of the water column and nutrient input with meltwater. The cumulative score of all the stressors shows that marine ice loss will lead to autotroph-dominated polar marine systems with detrimental effects on secondary producers, i.e. zooplankton and zoobenthos, and sea ice-obligate species. Although similar stressors are recognised for polar and subpolar regions, some processes may differ in magnitude. This overview aims to provide summarised knowledge to inform science-based solutions for conservation and climate mitigation actions.

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Section: Longer Productive Season and Food Base Composition Change/mi...mentioning

confidence: 99%

Polar biocenosis cumulative response to environmental stressors reveals who benefits from marine ice loss

Szeligowska

Moreno

2022

Preprint

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“…Similar results were obtained when using abundance-based beta diversity (Bray-Curtis, Supplementary Figure 2). of glaciers, reducing the availability of substrates for settlement (e.g., Khim et al, 2007) and also compromising the fitness of suspension feeders due to appendage clogging and excess of mineral suspension (Husmann et al, 2012;Krzeminska and Kuklinski, 2018;Gutt et al, 2019;Topçu et al, 2019).…”

Section: Processes Generating Differences In Gamma Diversitymentioning

confidence: 99%

Beta Diversity of Antarctic and Sub-Antarctic Benthic Communities Reveals a Major Role of Stochastic Assembly Processes

et al. 2021

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Community assembly is the result of both, deterministic and stochastic processes. The former encompasses niche-based local-scale mechanisms such as environmental filtering and biotic interactions; the latter includes ecological drift, probabilistic colonisation, and random extinctions. Using standardised sampling protocols, we show that the spatial variation in species composition (beta diversity) of shallow subtidal macrobenthic communities of sub-Antarctic (Strait of Magellan and Yendegaia Fjord [Beagle Channel]) and Antarctic (Fildes Bay [King George Island, West Antarctic Peninsula]) localities reflects a high contribution of stochastic processes to community assembly. Null model analyses indicated that random sampling from species pools of different sizes drove the observed among-locality differences in incidence- and abundance-based beta diversity. We analysed a normalised stochasticity ratio (NST), which delimits between more deterministic (<50%) and more stochastic (>50%) assembly. NST was notably larger than 50%, with mean values of 69.5% (95% CI = 69.2–69.8%), 62.5% (62.1–62.9%), and 72.8% (72.5–73.2%) in Strait of Magellan, Yendegaia Fjord, and Fildes Bay, respectively. Accordingly, environmental factors, such as depth, seawater temperature, salinity, and underwater light penetration, accounted for a small fraction of the spatial variation in community composition across the three localities. In this region, therefore, stochastic processes could have stronger effects on community assembly than deterministic niche-based factors. As anthropogenic biotic homogenisation continues apace, our study can give useful insights into the major ecological processes in Southern Ocean’ coastal marine communities.

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“…In this sense, it has also been hypothesised that sedimentation of TSPM per se could act as a community shaping factor based on differential sensitivities of each species present. The most tolerant species would stand better, changing competitive relationships, shaping the resulting community even from the earlier recruitment stages (Clark et al, 2017a;Kim et al, 2021;Krzeminska and Kuklinski, 2018;Torre et al 2017). Understanding the extent to which coastal total suspended particulate matter (TSPM) dynamics affects vital functions and survival of benthic key species will help to predict future Antarctic benthic community composition, and to elucidate ecosystem thresholds (Clark et al, 2017b;Gardner, 2000;Jansenet al, 2018a;2018b).…”

Section: Introductionmentioning

confidence: 99%

Antarctic ascidians under increasing sedimentation: Physiological thresholds and ecosystem hysteresis

Torre

Alurralde

Lagger

et al. 2021

Marine Environmental Research

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Biodiversity patterns of rock encrusting fauna from the shallow sublittoral of the Admiralty Bay

Cited by 10 publications

References 69 publications

Polar biocenosis cumulative response to environmental stressors reveals who benefits from marine ice loss

Polar biocenosis cumulative response to environmental stressors reveals who benefits from marine ice loss

Beta Diversity of Antarctic and Sub-Antarctic Benthic Communities Reveals a Major Role of Stochastic Assembly Processes

Antarctic ascidians under increasing sedimentation: Physiological thresholds and ecosystem hysteresis

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