Climate Change, Sea Level Rise and Morphological Developments in the Dutch Wadden Sea, a Marine Wetland

Misdorp, Robbert; Steyaert, Frank; Hallie, Frank P.; Ronde, John de

doi:10.1007/978-94-009-2003-3_16

Cited by 8 publications

(2 citation statements)

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“…On the other hand, rising sea level and amplification of the tidal range in the Wadden Sea (Jensen et al, 1992) have focused attention on a possible future reduction of tidal flat areas (Misdorp et al, 1990). An increase in hydrodynamic forces is likely to expand unstable rippled sand flats at the expense of stable, sedimentary areas, thus changing intertidal morphology and habitat composition.…”

Section: Introductionmentioning

confidence: 99%

Macrofauna on flood delta shoals in the Wadden Sea with an underground association between the lugwormArenicola marina and the amphipodUrothoe poseidonis

Lackschewitz

Reise

1998

Helgoländer Meeresunters.

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Living conditions for macrofauna on flood delta shoals are determined by surf, strong currents and sediment mobility. Thus, a unique assemblage of invertebrate species colonize these far off-shore, low intertidal flats. We here describe the macrobenthic fauna of emerging shoals in the Wadden Sea between the islands of RSm5 and Sylt. Besides ubiquitous macroinvertebrates of the intertidal zone and species which attain their main distribution in the subtidal zone, the flood delta shoals are characterized by organisms adapted to live in these highly unstable sediments, like the polychaetes Spio martinensis, Streptosyllis websteri, Magelona mirabilis, Psammodrilus balanoglossoides, the pericarid crustaceans Cumopsis goodsiri, Tanaissus lilljeborgi, Bathyporeia sarsi and a few others. Average abundance (1440 m -2 of ind > 1 re_m) and biomass (12.9 g AFDW m -2) were low compared to other intertidal habitats in the Wadden Sea. Biomass was dominated by largesized individuals of the lugworm Arenicola marina. The U-shaped burrows of these polychaetes were inhabited by high numbers of Urothoe poseidonis. Maximum densities of these amphipods occurred in the deepest parts of the burrows. Sampling at approximately monthly intervals revealed no apparent seasonality of U. poseidonis abundance. Together with small Capitella capitata, these amphipods constitute a deep-dwelling component of the macrofauna associated with lugworms, which is separated from all other macrofauna living at the sediment surface. As a response to rising sea level and increasing tidal ranges, we expect the unstable sandy shoals, inhabited by numerous Spio martinensis and Urothoe poseidonis, to expand within the Wadden Sea at the cost of stable sandy flats with abundant macrofauna.

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Section: Introductionmentioning

confidence: 99%

Macrofauna on flood delta shoals in the Wadden Sea with an underground association between the lugwormArenicola marina and the amphipodUrothoe poseidonis

Lackschewitz

Reise

1998

Helgoländer Meeresunters.

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“…Sea-level rise is causing coastal destruction along the coasts of North Carolina (Hackney and Cleary 1987), South Carolina (Daniels 1992), the Netherlands (Misdorp et aL 1990), and France (Lefeuvre 1990). In coastal regions that only experience periodic flooding and exposure to saline conditions due to tidal fluctuations, climatic change is causing seawater to move further inland.…”

Section: Introductionmentioning

confidence: 98%

Flood and salinity stress of wetland woody species, buttonbush (Cephalanthus occidentalis) and swamp tupelo (Nyssa sylvatica var.biflora)

1998

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Buttonbush (Cephalanthus occidentalis) and swamp tupelo (Nysxa sylvatica vat. biflora) seedlings were exposed to flooding and salinity conditions simulating the chronic exposure of sea-level rise and the acute exposure of hurricane storm surge. Chronically exposed seedlings were either watered or flooded with 0, 2, or 10 ppt salinity. Those in the acute experiment were watered or flooded with freshwater until exposed to a 21-ppt salinity surge for 48 hours. Freshwater flooding reduced photosynthesis (A), water pressure potential (~), height, and stem and root biomass for swamp tupelo while biomass of buttonbush roots decreased and stem increased. Chronic watering with 2 ppt salinity reduced height, basal diameter, and stem and root biomass for swamp tupelo but did not significantly affect buttonbush. Both species were negatively affected by watering with 10 ppt salinity, with total mortality of swamp tupelo. Flooding with 2 ppt salinity also caused a 100% mortality for swamp tupelo. All buttonbush seedlings survived with reduced A, ~F, and stem and root biomass. Plants chronically flooded with 10 ppt salinity were more affected, with drastically decreased A, stomatal conductance (g~), and • within the first day of treatment and all dying within three weeks. Watering with 21 ppt salinity reduced A and g~ of both species during the second day of the surge, but buttonbush recovered within the next 20 days. Flooding with 21-ppt saline water also greatly impacted buttonbush, which did not recover as when watered with 21 ppt salinity. Swamp tupelo was already stressed due to flooding and showed no further reduction in A or g~ due to the 21-ppt salinity flood surge. Buttonbush seedlings were more tolerant of salinity and flooding conditions than swamp tupelo seedlings, although it is unlikely that either species could survive long-term exposure to 10-ppt salinity flooding.

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Austauschprozesse im Sylt-Rømø Wattenmeer: Zusammenschau und Ausblick

Reise¹,

Köster²,

Müller³

et al. 1998

Ökosystem Wattenmeer/the Wadden Sea Ecosystem

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Climate Change, Sea Level Rise and Morphological Developments in the Dutch Wadden Sea, a Marine Wetland

Cited by 8 publications

References 1 publication

Macrofauna on flood delta shoals in the Wadden Sea with an underground association between the lugwormArenicola marina and the amphipodUrothoe poseidonis

Macrofauna on flood delta shoals in the Wadden Sea with an underground association between the lugwormArenicola marina and the amphipodUrothoe poseidonis

Flood and salinity stress of wetland woody species, buttonbush (Cephalanthus occidentalis) and swamp tupelo (Nyssa sylvatica var.biflora)

Austauschprozesse im Sylt-Rømø Wattenmeer: Zusammenschau und Ausblick

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