Tidal Freshwater Swamps of a Lower Chesapeake Bay Subestuary

2007 ◽  
pp. 161-182 ◽  
Author(s):  
Richard D. Rheinhardt
Keyword(s):  
Chesapeake Bay ◽  
Tidal Freshwater

Isoetes × carltaylorii (Isoetes acadiensis × Isoetes engelmannii), a new interspecific quillwort hybrid from the Chesapeake Bay

1997 ◽  
Vol 75 (2) ◽  
pp. 301-309 ◽  
Author(s):  
Lytton J. Musselman ◽  
Rebecca D. Bray ◽  
David A. Knepper
Keyword(s):  
United States ◽  
North America ◽  
Key Words ◽  
Chesapeake Bay ◽  
Tidal Freshwater ◽  
Tidal Marshes ◽  
Rare Plant ◽  
Northeastern United States ◽  
Maritime Provinces ◽  
First Report

Isoetes acadiensis Kott is a plant of the Maritime provinces of Canada and the northeastern United States. In the Chesapeake Bay region, this quillwort has previously been misidentified as Isoetes riparia Engelm., Isoetes saccharata Engelm., or Isoetes saccharata var. reticulata A.A. Eaton. Isoetes × carltaylorii hyb.nov. is the hybrid between I. acadiensis (2n = 44) and Isoetes engelmannii A. Braun (2n = 22). This is the first report of a hybrid with I. acadiensis. An apparently sterile triploid (2n = 33), this rare plant of freshwater tidal marshes has the predicted range of sizes and megaspore features of a hybrid. This brings to 14 the number of interspecific quillwort hybrids described from North America since 1985. Key words: Isoetes saccharata var. reticulata, Isoetes riparia, Isoetes saccharata, megaspores, tidal freshwater rivers.

Finfish-Waterbird Trophic Interactions in Tidal Freshwater Tributaries of the Chesapeake Bay

Waterbirds ◽  
2007 ◽  
Vol 30 (sp1) ◽  
pp. 50-62 ◽  
Author(s):  
Catherine B. Viverette ◽  
Greg C. Garman ◽  
Stephen P. McIninch ◽  
A. Catherine Markham ◽  
Bryan D. Watts ◽  
...  
Keyword(s):  
Chesapeake Bay ◽  
Trophic Interactions ◽  
Tidal Freshwater

BIOGEOMORPHOLOGY OF AN UPPER CHESAPEAKE BAY RIVER-MOUTH TIDAL FRESHWATER MARSH

Wetlands ◽  
2000 ◽  
Vol 20 (3) ◽  
pp. 520-537 ◽  
Author(s):  
Gregory B. Pasternack ◽  
William B. Hilgartner ◽  
Grace S. Brush
Keyword(s):  
Chesapeake Bay ◽  
River Mouth ◽  
Freshwater Marsh ◽  
Tidal Freshwater ◽  
Tidal Freshwater Marsh

A Geospatial Approach for Estimating Suitable Habitat and Population Size of the Invasive Northern Snakehead

2015 ◽  
Vol 6 (1) ◽  
pp. 145-157 ◽  
Author(s):  
Joseph W. Love ◽  
Joshua J. Newhard ◽  
Brett Greenfield
Keyword(s):  
Chesapeake Bay ◽  
Population Size ◽  
Submerged Aquatic Vegetation ◽  
Aquatic Vegetation ◽  
Adult Population ◽  
Tidal Freshwater ◽  
Predatory Fish ◽  
Suitable Habitat ◽  
Potomac River ◽  
Chesapeake Bay Watershed

Abstract Northern snakehead Channa argus, an invasive predatory fish species from Asia, may continue to establish itself throughout temperate areas of the eastern United States, particularly in shallow vegetated habitats of ponds and streams. The species was first collected in the Potomac River in 2004 and has become successfully established in several major rivers within the Chesapeake Bay watershed. The objectives of this work were to develop habitat suitability criteria using a novel methodology that combines geographic information systems technology and fish surveys to estimate population sizes. A combination of catch data and reported or empirically derived habitat relationships were used to analyze seasonal distributions (March–October) in two tidal freshwater tributaries of the Potomac River: Nanjemoy Creek (2013) and Chopawamsic Creek (2010–2013). Adults were collected in relatively deeper sections of the streams (average depth 0.7–1.0 m) with a low cover of submerged aquatic vegetation (0–21% of site). Using additional distributional data, we identified suitability criteria as: 1) edges of submerged aquatic vegetation that included 5 m of vegetation and 5 m of adjacent open water; 2) less than 30% of mid-channel distance from shore, which may or may not include submerged aquatic vegetation; and 3) the upper 15% of the tidal freshwater stream. An adult population estimate derived from a suitable area in Pomonkey Creek (a tributary of the Potomac River) and estimated densities from Nanjemoy Creek and Chopawamsic Creek (i.e., three adults/ha) was not different from that expected using electrofishing surveys. Assuming approximately 7,093 ha of suitable habitat and three adults/ha, the number of adults was predicted to be 21,279 for 44 major tidal freshwater tributaries of the Potomac River. This is our first estimate of population size of northern snakehead for any river of the Chesapeake Bay watershed and its accuracy will undoubtedly improve as additional studies report variation in density for other tributaries. Because of the species’ ability to establish itself in temperate climates, it is important to engage the public to prevent additional releases of northern snakehead, especially to vulnerable habitats.

Biogeomorphic controls on sedimentation and substrate on a vegetated tidal freshwater delta in upper Chesapeake Bay

Geomorphology ◽  
2002 ◽  
Vol 43 (3-4) ◽  
pp. 293-311 ◽  
Author(s):  
Gregory B Pasternack ◽  
Grace S Brush
Keyword(s):  
Chesapeake Bay ◽  
Tidal Freshwater

Between ‘Savage Man’ and ‘Most Faithful Englishman’ Manteo and the Early Anglo-Indian Exchange, 1584–1590

Itinerario ◽  
2000 ◽  
Vol 24 (2) ◽  
pp. 146-169 ◽  
Author(s):  
Michael Leroy Oberg
Keyword(s):  
North Carolina ◽  
Chesapeake Bay ◽  
One Year ◽  
Anglo Indian

In August of 1587 Manteo, an Indian from Croatoan Island, joined a group of English settlers in an attack on the native village of Dasemunkepeuc, located on the coast of present-day North Carolina. These colonists, amongst whom Manteo lived, had landed on Roanoke Island less than a month before, dumped there by a pilot more interested in hunting Spanish prize ships than in carrying colonists to their intended place of settlement along the Chesapeake Bay. The colonists had hoped to re-establish peaceful relations with area natives, and for that reason they relied upon Manteo to act as an interpreter, broker, and intercultural diplomat. The legacy of Anglo-Indian bitterness remaining from Ralph Lane's military settlement, however, which had hastily abandoned the island one year before, was too great for Manteo to overcome. The settlers found themselves that summer in the midst of hostile Indians.

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