Impacts of past and future coastal changes on the Yukon coast — threats for cultural sites, infrastructure, and travel routes

Irrgang, Anna; Lantuit, Hugues; Gordon, Richard R.; Piskor, Ashley; Manson, Gavin K.

doi:10.1139/as-2017-0041

Cited by 40 publications

(29 citation statements)

References 47 publications

(60 reference statements)

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“…There has been dredging in harbour approaches and to build artificial islands for drilling. Future activities such as infrastructure development, new travel routes, and growing tourism opportunities may impact cultural sites (Irrgang et al, 2019).…”

Section: Mackenzie-beaufort Coastal Wetland Canadamentioning

confidence: 99%

Anthropogenic, Direct Pressures on Coastal Wetlands

et al. 2020

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Coastal wetlands, such as saltmarshes and mangroves that fringe transitional waters, deliver important ecosystem services that support human development. Coastal wetlands are complex social-ecological systems that occur at all latitudes, from polar regions to the tropics. This overview covers wetlands in five continents. The wetlands are of varying size, catchment size, human population and stages of economic development. Economic sectors and activities in and around the coastal wetlands and their catchments exert multiple, direct pressures. These pressures affect the state of the wetland environment, ecology and valuable ecosystem services. All the coastal wetlands were found to be affected in some ways, irrespective of the conservation status. The main economic sectors were agriculture, animal rearing including aquaculture, fisheries, tourism, urbanization, shipping, industrial development and mining. Specific human activities include land reclamation, damming, draining and water extraction, construction of ponds for aquaculture and salt extraction, construction of ports and marinas, dredging, discharge of effluents from urban and industrial areas and logging, in the case of mangroves, subsistence hunting and oil and gas extraction. The main pressures were loss of wetland habitat, changes in connectivity affecting hydrology and sedimentology, as well as contamination and pollution. These pressures lead to changes in environmental state, such as erosion, subsidence and hypoxia that threaten the sustainability of the wetlands. There are also changes in the state of the ecology, such as loss of saltmarsh plants and seagrasses, and mangrove trees, in tropical wetlands. Changes in the structure and function of the wetland ecosystems affect ecosystem

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Section: Mackenzie-beaufort Coastal Wetland Canadamentioning

confidence: 99%

Anthropogenic, Direct Pressures on Coastal Wetlands

et al. 2020

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“…Studies in Arctic coastal and marine environments have used the presence, location, species, and age of driftwood to infer the long-term variability of ocean current dynamics, sea-ice conditions, and the occurrence of storm surges (e.g. Reimnitz and Maurer, 1979;Harper et al, 1988;Dyke et al, 1997;Tremblay et al 1997;Bennike, 2004;Polyak et al, 2010;Nixon et al, 2016;Irrgang et al, 2019). Age control on Holocene driftwood is commonly obtained by radiocarbon ( 14 C) dating and the reported uncalibrated ages may have uncertainties in the order of decades to centuries (e.g.…”

Section: Introductionmentioning

confidence: 99%

Short communication: Driftwood provides reliable chronological markers in Arctic coastal deposits

Sander¹,

Kirdyanov²,

Crivellaro³

et al. 2020

Preprint

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Abstract. Originating from the boreal forest and often transported over large distances, driftwood characterises many Arctic coastlines. Here we present a combined assessment of radiocarbon (14C) and dendrochronological (ring width) age estimates of driftwood samples to constrain the progradation of two Holocene beach-ridge systems near the Lena Delta in the Siberian Arctic (Laptev Sea). Our data show that the 14C ages obtained on syndepositional driftwood from beach deposits yield surprisingly coherent chronologies for the coastal evolution of the field sites. The dendrochronological analysis of wood from modern driftlines revealed the origin and recent delivery of the wood from the Lena River catchments. This finding suggests that the duration transport lies within the uncertainty of state-of-the-art 14C dating and thus substantiates the validity of age indication obtained from driftwood. This observation will help to better understand changes in similar coastal environments, and to improve our knowledge about the response of coastal systems to past climate and sea-level changes.

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“…2012; O'Rourke 2017; Irrgang et al . 2019). In the Nuuk area, 70% of the registered sites are located within 200 m of the modern shoreline.…”

Section: Discussionmentioning

confidence: 99%

Arctic archaeological sites threatened by climate change: A regional multi‐threat assessment of sites in south‐west Greenland

et al. 2020

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Climate change threatens many well‐preserved archaeological sites in the Arctic. The paper presents the first Arctic multi‐threat assessment focusing on the Nuuk region of Greenland. The results suggest that the majority of the 336 known archaeological sites are already exposed to impacts from microbial degradation, permafrost thaw and vegetation, and that these impacts will increase over the next 80 years. Additional impacts from coastal erosion are only noted at a limited number of sites due to a predominant consolidated and uplifting coast. The applied methods represent an important first step to identify threatened sites and emphasize important data limitations.

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Impacts of past and future coastal changes on the Yukon coast — threats for cultural sites, infrastructure, and travel routes

Cited by 40 publications

References 47 publications

Anthropogenic, Direct Pressures on Coastal Wetlands

Anthropogenic, Direct Pressures on Coastal Wetlands

Short communication: Driftwood provides reliable chronological markers in Arctic coastal deposits

Arctic archaeological sites threatened by climate change: A regional multi‐threat assessment of sites in south‐west Greenland

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