An Overview of Changing Usage and Management Issues in New Zealand's Surf Zone Environment

Hume, Terry M.; Mulcahy, Nick; Mead, Shaw

doi:10.2112/si87-001.1

Cited by 10 publications

(5 citation statements)

References 13 publications

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“…et al 10.3389/fmars.2023.1170756 The largest tides occur in the west coast due in part to the larger amplitude of the S2 constituent. Hume et al (2016) have classified all hydro systems of New Zealand; most estuaries in NZ are permanently connected to the ocean through one or more entrances. These systems have a complex morphology, with various geometries and extensive intertidal zoneswhich in some cases, can be more than 90% of the estuary's total area.…”

Section: Figurementioning

confidence: 99%

A regional analysis of tide-surge interactions during extreme water levels in complex coastal systems of Aotearoa New Zealand

et al. 2023

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Tide-surge interaction (TSI) is a critical factor in assessing flooding in shallow coastal systems, particularly in estuaries and harbours. Non-linear interactions between tides and surges can occur due to the water depth and bed friction. Global investigations have been conducted to examine TSI, but its occurrence and impact on water levels in Aotearoa New Zealand (NZ) have not been extensively studied. Water level observations from 36 tide gauges across the diverse coast of NZ were analysed to determine the occurrence and location of TSI. Statistical analysis and numerical modelling were conducted on data from both inside and outside estuaries, focusing on one estuary (Manukau Harbour) to determine the impact of TSI and estuarine morphology on the co-occurrence rate of extreme events. TSI was found to occur at most sites in NZ and primarily affects the timing of the largest surges relative to high tide. There were no regional patterns associated with the tide, non-tidal residual, or skew-surge regimes. The strongest TSI occurred in inner estuarine locations and was correlated with the intertidal area. The magnitude of the TSI varied depending on the method used, ranging from -16 cm to +27 cm. Co-occurrence rates of extreme water levels outside and inside the same estuary varied from 20% to 84%, with TSI modulating the rate by affecting tidal amplification. The results highlight the importance of investing in a more extensive tide gauge network to provide longer observations in highly populated estuarine coastlines. The incorporation of TSI in flooding hazard projections would benefit from more accurate and detailed observations, particularly in estuaries with high morphological complexity. TSI occurs in most sites along the coast of NZ and has a significant impact on water levels in inner estuarine locations. TSI modulates the co-occurrence rate of extreme water levels in estuaries of NZ by affecting tidal amplification. Therefore, further investment in the tide gauge network is needed to provide more accurate observations to incorporate TSI in flooding hazard projections.

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Section: Figurementioning

confidence: 99%

A regional analysis of tide-surge interactions during extreme water levels in complex coastal systems of Aotearoa New Zealand

et al. 2023

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“…The Inlet opens to Tasman Bay at the western and eastern ends of the Island (Figure 1). The spring tidal range is 3.7 m [25], and the residence time of the water ranges from 0.6 days (near complete tidal mixing) to 11.6 days [26]. The volumes of freshwater discharges to the Inlet from streams and rivers are low compared to the volumes of water exchanged by the tides.…”

Section: Study Areamentioning

confidence: 99%

Monitoring Intertidal Habitats for Effects from Biosolids Applications onto an Adjacent Forestry Plantation

et al. 2023

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Stabilised organic solids derived from sewage sludge (“biosolids”) are applied to land as an alternative to disposal as landfill. This study evaluated the long-term effects of biosolids applied to forestry plantations on the adjacent intertidal habitats of Rabbit Island (New Zealand). On this island, biosolids are applied to enhance the growth of trees (Pinus radiata). Shoreline topography, macroalgal cover, sediment grain size, the concentrations of nutrients, trace metals, and faecal indicator bacteria, and benthic infaunal communities were studied in 2008, 2014, and 2019 at twelve intertidal transect sites (four “reference” and eight “application”) adjacent to forestry blocks where biosolids have been applied over a period of 24 years. The sediment composition did not differ significantly between the survey years or between the reference and application sites. Total nitrogen concentrations in the sediments increased over time at some transects, but such increases were not consistent among the application transects. No symptoms of excessive algal growth, sediment anoxia, and hydrogen sulphide odours were observed at most sites. Key infaunal taxa were similar between the reference and application transects. Overall, no long-term adverse changes to intertidal habitats attributed to biosolids application were detected between the reference and application sites. This study shows that biosolids application can co-occur without detectable adverse effects on nearby intertidal environments. In a global context of rising concern over climate change, environmental pollution, and resource scarcity, forest fertilisation with biosolids can facilitate biomass production and soil development while protecting valued coastal ecosystems.

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“…Surfi ng (Hume et al, 2019;Ponti ng & O'Brien, 2014;Rendle & Rodwell, 2014;Scheske et al, 2019) 4 Sailing (Jones & Navarro, 2018;Philippe, 2020;Rahman et al, 2020) 3…”

Section: Sport Arti Cles Sum Of Arti Clesmentioning

confidence: 99%

Nautical Sports Tourism: An exploratory analysis on opportunities for future development

et al. 2022

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Nautical tourism has become a very popular tourism niche either for practitioners or spectators. Due to the COVID-19 outbreak, new concerns to tourists as well as different motivations to travel have emerged. In this context, the appreciation of simpler lifestyles, contact with nature and water and the practice of outdoors activities are the new trend in the post-COVID-19 world. Therefore, with the purpose to identify managerial, governmental and academic opportunities to develop this promising sector, a literature review on Nautical Sports Tourism was developed. Following a four stages bibliometric analysis (Database selection, search criteria, data selection and analysis of results), this study revealed that, although it regards a topic of considerable growing interest, there is still a long way for the nautical sports tourism literature research to reach its maturity. Regardless of the unquestionable relevance of the current publications, there is still a lack of specific theory development and framework propositions in the field of nautical sports tourism. Even so, it was observed that the combination of sports and tourism in nautical environments opens a myriad of possibilities for places willing to enhance their competitiveness, improve brand image and qualify and diversify the coastal infrastructures.

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An Overview of Changing Usage and Management Issues in New Zealand's Surf Zone Environment

Cited by 10 publications

References 13 publications

A regional analysis of tide-surge interactions during extreme water levels in complex coastal systems of Aotearoa New Zealand

A regional analysis of tide-surge interactions during extreme water levels in complex coastal systems of Aotearoa New Zealand

Monitoring Intertidal Habitats for Effects from Biosolids Applications onto an Adjacent Forestry Plantation

Nautical Sports Tourism: An exploratory analysis on opportunities for future development

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