Print Report

CEGL006614 Intertidal Mudflats Sparse Vegetation

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Intertidal Mudflats Sparse Vegetation

Colloquial Name: North Atlantic Coast Estuarine Intertidal Mudflats

Hierarchy Level:  Association

Type Concept: This is a saline (>18.0 ppt) intertidal mudflat community that typically lacks vegetation. Ulva lactuca (sea-lettuce) may be present or prominent. The substrate consists of silt or sand that is rich in organic matter and poorly-drained at low tide. These saline intertidal mudflats extend along the North Atlantic Coast from Maine to New York.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: This type is likely covered by the marine classification; however, this mudflat community occurs in coastal vegetation mapping projects, and it seems appropriate to classify it under sparse vegetation for the time being, until the marine classification can be applied to vegetation mapping projects.

Similar NVC Types: No Data Available
note: No Data Available

Physiognomy and Structure: No Data Available

Floristics: This association typically does not have vegetation. However, some examples have dense cover of the green alga Ulva lactuca.

Dynamics:  Maritime dynamics influence this Atlantic Coast intertidal mudflat association. It is washed by low-energy waves and flooded by semidiurnal tides. Fluctuating salinity levels also influence the community. This is a relatively low-diversity but highly productive community, best characterized by the benthic invertebrate fauna including Mya arenaria (softshell clam), Littorina littorea (common periwinkle), Mytilus edulis (blue mussel), and various mud worms in Polydora spp., Streblospio benedicti and others. These invertebrates are a food source for migrant shorebirds such as Calidris alba (sanderling), Calidris minutilla (least sandpiper), Haematopus palliatus (American oystercatcher), Tringa semipalmata (willet), Charadrius semipalmatus (semipalmated plover), Pluvialis squatarola (black-bellied plover), and others. Coastal and estuarine fish migrate over these flats at high tide and feed on invertebrates in the sediment (Edinger et al. 2014a).

Environmental Description:  This association occurs on saline mudflats located between the highest high tide and the lowest low tide along the North Atlantic Coast. Salinity levels are greater than 18.0 parts per thousand of ocean-derived salts. They are completely exposed at low tide and are tidally-flooded twice daily. The substrate consists of silt or sand that is poorly-drained at low tide and rich in organic matter. These areas are subject to moderated fluctuations in salinity and moisture and are washed by low-energy waves. The substrate may be covered with algae.

Geographic Range: These intertidal mudflats extend along the Atlantic Coast from Maine to New York and possibly New Jersey.

Nations: US

States/Provinces:  CT, DE, MA, MD, ME, NH, NJ, NY, RI




Confidence Level: Low - Poorly Documented

Confidence Level Comments: No Data Available

Grank: G5

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Ulva lactuca community (Metzler and Barrett 2006)
= Intertidal Mudflats Sparse Vegetation (MNAP 1991)

Concept Author(s): B.L. Welsh (1980) and R.B. Whitlatch (1982)

Author of Description: E. Largay and G. Edinger

Acknowledgements: No Data Available

Version Date: 03-23-07

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