The significance and vulnerability of Australian saltmarshes: implications for management in a changing climate

Saintilan, Neil; Rogers, Kerrylee

doi:10.1071/mf12212

Cited by 59 publications

(29 citation statements)

References 118 publications

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“…According to a model for the Indo‐Pacific, mangroves from the GBR catchments, where sediment supply is high, are at relatively low risk of being submerged by 2100 (Lovelock, Cahoon, et al, ). In addition, sea‐level rise will cause mangroves to migrate into saltmarsh or adjacent freshwater wetlands (Saintilan & Rogers, ; Figure b). A further acceleration of sea‐level rise may result in the loss of intertidal wetlands of the region (Lovelock, Cahoon, et al, ).…”

Section: Status and Threats To Wetlands Within The Gbr Catchmentsmentioning

confidence: 99%

Managing threats and restoring wetlands within catchments of the Great Barrier Reef, Australia

Adame

Arthington

Waltham

et al. 2019

Aquatic Conservation

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1. The catchments of the Great Barrier Reef (GBR) in Australia include more than one million ha of wetlands, which help to sustain the health and resilience of the reef.2. This article reviews the status, values, and threats of wetlands in the GBR catchments, as well as the management, protection, and challenges and opportunities for their restoration and rehabilitation.3. At present, wetlands in the GBR catchments have low rates of area loss and are generally well protected; however, they face major management challenges owing to the intensive land use of the catchments, especially for grazing, agriculture, horticulture, and mining. Major threats to these wetlands include water pollution, invasive species, changes in hydrology, and increasing temperature and salinity resulting from climate change.4. In recent years wetlands have been considered primarily for their role in improving water quality to ameliorate contaminated terrestrial run-off to the GBR, with little attention given to their intrinsic value and other ecosystem services. 5. Financial opportunities for wetland restoration in addition to government-funded schemes include water pollution offsets, payment for ecosystem services, and nitrogen markets.6. Wetlands need to be protected, managed, and restored for the ecosystem services that they provide to the GBR, but also for their intrinsic value as significant features of coastal landscapes.

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Section: Status and Threats To Wetlands Within The Gbr Catchmentsmentioning

confidence: 99%

Managing threats and restoring wetlands within catchments of the Great Barrier Reef, Australia

Adame

Arthington

Waltham

et al. 2019

Aquatic Conservation

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“…Regardless of the driving process, the abovementioned observations imply that mangrove clearance results in a rising relative sea level, which then may impact on adjacent saltmarsh habitats or other land use functions (Rogers et al 2014;Saintilan and Rogers 2013). Exposed shorelines are also likely to become more vulnerable to erosion, especially if this localised rise in relative sea level is exacerbated by predicted global sea-level rise (Hayden and Granek 2015).…”

Section: Effects Of Mangrove Clearance On Estuarine Morphodynamicsmentioning

confidence: 99%

The Dynamics of Expanding Mangroves in New Zealand

Horstman

Lundquist

Bryan

et al. 2018

Coastal Research Library

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In contrast to the global trend of mangrove decline, New Zealand mangroves are rapidly expanding, facilitated by elevated sediment inputs in coastal waters as a consequence of large-scale land use changes following European settlement. New Zealand mangroves are at the southern limit of the global mangrove extent, which limits the tree height of Avicennia marina var. australasica, the only mangrove species present. Mangroves in New Zealand thrive in the sheltered environments of infilling drowned river valleys with abundant supply of fine terrigenous sediments, showing various stages of mangrove succession and expansion dynamics. Bio-physical interactions and carbon dynamics in these expanding temperate mangrove systems show similarities to, but also differ from those in tropical mangrove forests, for instance due to the limited height and complexity of the mangrove communities. Likewise, ecosystem services provided by New Zealand mangroves deviate from those offered by tropical mangroves. In particular, the association of mangrove expansion with the accumulation of (the increased supply of) fine sediments and the consequent change of estuarine ecosystems, has provoked a negative perception of mangrove expansion and subsequently led to mangrove clearing. Over recent decades, a body of knowledge has been developed regarding the planning and decision making relating to mangrove removal, yet there are still effects that are unknown, for example with respect to the post-clearance recovery of the original sandflat ecosystems. In this chapter we discuss the dynamics of New Zealand's expanding mangroves from a range of viewpoints, with the aim of elucidating the possible contributions of expanding mangroves to coastal ecosystem services, now and in the future. This chapter also reviews current policies and practice regarding mangrove removal in New Zealand and addresses the (un)known effects of mangrove clearance. These combined insights may contribute to the development of integrated coastal management strategies that recognise the full potential of expanding mangrove ecosystems.

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“…Saltmarshes vary in their ecological structure, including habitat types, hydrological regimes, and diversity of aquatic fauna, all of which drive mosquito oviposition behavior (Adam , McCall and Pennings ). Across Australia, saltmarsh vegetation is unique in the overlap of mangroves and halophytic succulent plants, grasses, and sedges between the tropics and cooler temperate regions, with mangroves being absent from Tasmania (Laegdsgaard , Saintilan and Rogers ). This provides a mosaic of habitats and environmental conditions that can be utilized by mosquito vectors.…”

Section: Introductionmentioning

confidence: 99%

Mosquito distribution in a saltmarsh: determinants of eggs in a variable environment

Rowbottom

Carver

Barmuta

et al. 2017

Journal of Vector Ecology

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Two saltmarsh mosquitoes dominate the transmission of Ross River virus (RRV, Togoviridae: Alphavirus), one of Australia's most prominent mosquito-borne diseases. Ecologically, saltmarshes vary in their structure, including habitat types, hydrological regimes, and diversity of aquatic fauna, all of which drive mosquito oviposition behavior. Understanding the distribution of vector mosquitoes within saltmarshes can inform early warning systems, surveillance, and management of vector populations. The aim of this study was to identify the distribution of Ae. camptorhynchus, a known vector for RRV, across a saltmarsh and investigate the influence that other invertebrate assemblage might have on Ae. camptorhynchus egg dispersal. We demonstrate that vegetation is a strong indicator for Ae. camptorhynchus egg distribution, and this was not correlated with elevation or other invertebrates located at this saltmarsh. Also, habitats within this marsh are less frequently inundated, resulting in dryer conditions. We conclude that this information can be applied in vector surveillance and monitoring of temperate saltmarsh environments and also provides a baseline for future investigations into understanding mosquito vector habitat requirements. Journal of Vector Ecology 42 (1): 161-170. 2017.

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The significance and vulnerability of Australian saltmarshes: implications for management in a changing climate

Cited by 59 publications

References 118 publications

Managing threats and restoring wetlands within catchments of the Great Barrier Reef, Australia

Managing threats and restoring wetlands within catchments of the Great Barrier Reef, Australia

The Dynamics of Expanding Mangroves in New Zealand

Mosquito distribution in a saltmarsh: determinants of eggs in a variable environment

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