ORCID Profile
0000-0002-2701-5961
Current Organisation
University of Tasmania
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Publisher: CSIRO Publishing
Date: 2021
DOI: 10.1071/MF20069
Abstract: There is a growing body of research highlighting the importance of saltmarshes as habitats for fish for feeding, refuge from predation and reproduction. However, more work is needed on fish on vegetated marsh flats (or surfaces). We reviewed 60 studies that used 21 methods to s le fish assemblages on saltmarsh flats. Drop s lers, fyke nets and pop nets were most frequently employed, with considerably more studies being conducted in graminoid than succulent marsh. Reporting of s ling temporal and tidal details, environmental variables and fish attributes was inconsistent. Most of the papers focussed on one or more of conservation management, comparisons among habitat types, and the use of saltmarsh (including fish activity type or residency status). Important potential areas of research include the relationships between the fish assemblages of saltmarsh flats and coastal fisheries, the effects of invasive plant species and marsh restoration efforts in areas outside the United States, and the potential effects of sea-level rise on vegetated flats as fish habitat. S ling methods that provide density measures are likely to be most useful for most of this research. Thus, drop s lers and pop nets are an appropriate choice, the former in graminoid saltmarshes and the latter in succulent saltmarshes.
Publisher: No publisher found
Date: 2019
DOI: 10.1071/MF17154
Publisher: The Royal Society of Tasmania
Date: 2016
Publisher: Wiley
Date: 02-11-2023
DOI: 10.1111/REC.13812
Abstract: Vegetation changes in saltmarsh habitat can influence fish assemblages and abundance. In Tasmania, Australia, mid‐latitude succulent saltmarsh communities have been invaded by the introduced tall grass, Spartina anglica. Eradication efforts have been ongoing since the 1990s with purported benefits for fish access to intertidal foraging grounds, but a lack of knowledge of the impact of S. anglica on fish limits understanding of the benefits and effectiveness of native habitat restoration. Here, we investigate whether fish assemblages in native saltmarshes and non‐native S. anglica grassland differ in species ersity, fish abundance, and size class distribution. We used buoyant pop nets to s le fishes in Sarcocornia quinqueflora herbland and S. anglica grassland swards at three s ling stations in northwest Tasmania. Very few in iduals and low species ersity were recorded in both vegetation types at the s ling station with the most well‐established S. anglica infestation. Elsewhere, richness and ersity were higher in S. quinqueflora herbland. Overall fish abundance was higher in S. quinqueflora than in S. anglica , with a very strong effect at one s ling station. Fewer small in iduals of the numerically dominant Atherinosoma microstoma were recorded in S. anglica , potentially indicating impaired nursery function. Our results provide important insights for S. anglica control, as we are the first to demonstrate a relationship between S. anglica presence and fish characteristics in southern Australian saltmarsh. These results indicate that S. anglica control is valuable for fish conservation. An extension of our research to document the effects of S. anglica removal on fishes is desirable.
Publisher: American Association for Cancer Research (AACR)
Date: 14-06-2018
DOI: 10.1158/1078-0432.CCR-17-2701
Abstract: Purpose: Checkpoint kinase 1 inhibitors (CHEK1i) have single-agent activity in vitro and in vivo. Here, we have investigated the molecular basis of this activity. Experimental Design: We have assessed a panel of melanoma cell lines for their sensitivity to the CHEK1i GNE-323 and GDC-0575 in vitro and in vivo. The effects of these compounds on responses to DNA replication stress were analyzed in the hypersensitive cell lines. Results: A subset of melanoma cell lines is hypersensitive to CHEK1i-induced cell death in vitro, and the drug effectively inhibits tumor growth in vivo. In the hypersensitive cell lines, GNE-323 triggers cell death without cells entering mitosis. CHEK1i treatment triggers strong RPA2 hyperphosphorylation and increased DNA damage in only hypersensitive cells. The increased replication stress was associated with a defective S-phase cell-cycle checkpoint. The number and intensity of pRPA2 Ser4/8 foci in untreated tumors appeared to be a marker of elevated replication stress correlated with sensitivity to CHEK1i. Conclusions: CHEK1i have single-agent activity in a subset of melanomas with elevated endogenous replication stress. CHEK1i treatment strongly increased this replication stress and DNA damage, and this correlated with increased cell death. The level of endogenous replication is marked by the pRPA2Ser4/8 foci in the untreated tumors, and may be a useful marker of replication stress in vivo. Clin Cancer Res 24(12) 2901–12. ©2018 AACR.
Publisher: Wiley
Date: 13-06-2019
DOI: 10.1002/ESP.4644
Publisher: CSIRO Publishing
Date: 2020
DOI: 10.1071/PC19016
Abstract: Temperate Australian saltmarshes, including those in the southern island state of Tasmania, are considered to be a threatened ecological community under Australian federal legislation. There is a need to improve our understanding of the ecological components, functional relationships and threatening processes of Tasmanian coastal saltmarshes and distil research priorities that could assist recovery actions. A semisystematic review of the literature on Tasmanian coastal saltmarshes supported by expert local knowledge identified 75 studies from 1947 to 2019. Existing understanding pertains to saltmarsh plants, soils, invertebrates and human impacts with ongoing studies currently adding to this knowledge base. Several knowledge gaps remain, and the present review recommends six key priority areas for research: (1) citizen science–organised inventory of (initially) saltmarsh birds, plants and human impacts with the potential for expansion of datasets (2) use of saltmarsh by marine transient species including fish and decapods (3) use of saltmarsh by, and interactions with, native and introduced mammals (4) invertebrates and their interactions with predators (e.g. birds, fish) and prey (e.g. insects, plants, detritus) (5) historic saltmarsh loss and priority areas for conservation (6) monitoring changes to saltmarsh due to both localised human impacts (e.g. grazing, eutrophication, destruction) and global change factors (e.g. climate change, sea-level rise). Addressing these research priorities will help in developing a better understanding of the ecological character of Tasmanian coastal saltmarshes and improve their conservation management.
Publisher: Wiley
Date: 31-01-2019
No related grants have been discovered for Violet Harrison-Day.