scholarly journals Floristics of the Abrams Creek Wetlands, a Calcareous Fen Complex in Winchester City and Frederick County, Virginia

Castanea ◽  
2017 ◽  
Vol 82 (2) ◽  
pp. 132-155 ◽  
Author(s):  
Woodward S. Bousquet ◽  
Gary P. Fleming
Keyword(s):  
Calcareous Fen ◽  
Frederick County

Geologic map of the Winchester quadrangle, Frederick County, Virginia

2003 ◽  
Author(s):  
Randall C. Orndorff ◽  
David J. Weary ◽  
Ronald A. Parker
Keyword(s):  
Frederick County ◽  
Geologic Map

scholarly journals Characteristics of Liparis loeselii (L.) Rich. populations in selected Natura 2000 areas in eastern Poland

2020 ◽  
Vol 55 (3) ◽  
pp. 151-162
Author(s):  
Danuta Urban ◽  
Joanna Sender ◽  
Ewelina Tokarz ◽  
Andrzej Różycki
Keyword(s):  
Natura 2000 ◽  
Total Carbon ◽  
Habitat Conditions ◽  
Total Carbon Content ◽  
Poor Fen ◽  
Calcareous Fen ◽  
Liparis Loeselii ◽  
The Individual ◽  
Insight Into

AbstractIn view of the sensitivity of Liparis loeselii to changes in habitat conditions, we carried out a study with the aim to monitor population numbers, identify the individual features of the Liparis loeselii population, analyse habitat conditions, identify threats and propose conservation measures to preserve the species. The investigations were conducted in seven unmanaged objects located in three Natura 2000 areas in eastern Poland. The results of this study provide a new insight into Liparis loeselii ecology. The analysed populations inhabited some habitat types: extremely poor fen, transitional mire, rich fen, calcareous fen, spring-fed fen. The content of nutrients was similar in all the habitats. A CCA analysis revealed that the total carbon content, pH, and redox potential of the substrate determine differences between the habitats analysed. Juvenile individuals represented a maximum of 12% of the analysed populations and were the least abundant group of these plants. The flowering was primarily influenced by hydrological conditions. Based on the long-term observations reported in this article, it can be assumed that the species stands a chance of surviving at the localities analysed, provided that the habitat conditions do not change dramatically.

Micropiles in Karst: Interstate 70, Frederick County, MD

2007 ◽  
Author(s):  
Walter G. Kutschke
Keyword(s):  
Frederick County

scholarly journals Revision of the calcareous fen arachnofauna: habitat affinities of the fen-inhabiting spiders

ZooKeys ◽  
2018 ◽  
Vol 802 ◽  
pp. 67-108 ◽  
Author(s):  
Maija Štokmane ◽  
Inese Cera
Keyword(s):  
Species Richness ◽  
Northern Hemisphere ◽  
Ecological Groups ◽  
Pitfall Traps ◽  
Calcareous Fens ◽  
Spider Species ◽  
Calcareous Fen ◽  
Alkaline Environments ◽  
Habitat Affinities ◽  
Sweep Net

Calcareous fens are one of the most species-rich habitats of the temperate zone of the Northern Hemisphere. In spite of this species richness, however, calcareous fens are still rather poorly investigated. Consequently, the data of the fen-associated spider fauna are also largely lacking. The aim of the research was to study the spider fauna of the calcareous fens of Latvia and to draw conclusions about what kind of spider species and ecological groups typically inhabit calcareous fen habitats. Spiders were sampled in the summer months of 2010, 2011, and 2012 at nine different calcareous fens of the coastal lowland of Latvia. The spider collection was performed by pitfall traps and a sweep net. The examined material comprised 6631 adult spider individuals representing 21 families and 149 species. The main spider ecological groups that dominated in the studied calcareous fens were hygrophilous and photophilous species which largely reflect the main properties of our studied habitats, all of which were wet, open mire habitats. Nevertheless, the fen arachnofauna consisted also of spider groups which are less typical for moist, sun-exposed, and alkaline environments, like xerophilous, sciophilous, and sphagnophilous species, respectively. Finally, several spider species collected in this study have not been previously reported for the spider fauna of Latvia, and many more might still be undiscovered in these unique and poorly investigated habitats. Therefore, it is suggested that calcareous fens deserve special attention and they should definitely be investigated further.

Site Characterization and Geotechnical Roadway Design over Karst: Interstate 70, Frederick County, Maryland

2005 ◽  
Author(s):  
Walter G. Kutschke ◽  
S. Murray Miller ◽  
Wanfang Zhou ◽  
Barry F. Beck
Keyword(s):  
Site Characterization ◽  
Frederick County ◽  
Roadway Design

Impacts of groundwater extraction on calcareous fen floristic quality

2020 ◽  
Vol 49 (3) ◽  
pp. 723-734
Author(s):  
David Bart ◽  
Eric Booth ◽  
Steven P. Loheide ◽  
Thomas Bernthal
Keyword(s):  
Groundwater Extraction ◽  
Floristic Quality ◽  
Calcareous Fen

Pioneers of Old Monocacy: The Early Settlement of Frederick County, Maryland, 1721-1743

1988 ◽  
Vol 75 (1) ◽  
pp. 239
Author(s):  
Joseph C. Morton ◽  
Grace L. Tracey ◽  
John P. Dern
Keyword(s):  
Frederick County ◽  
Early Settlement

scholarly journals Characterization of nuclear microsatellite loci in the calcareous fen specialistScorpidium cossonii(Calliergonaceae)

2011 ◽  
Vol 98 (10) ◽  
pp. e290-e292 ◽  
Author(s):  
Yuppayao Kophimai ◽  
Carolina Cornejo ◽  
Markus Peintinger ◽  
Ariel Bergamini ◽  
Christoph Scheidegger
Keyword(s):  
Microsatellite Loci ◽  
Calcareous Fen ◽  
Nuclear Microsatellite

Pioneers of Old Monocacy: The Early Settlement of Frederick County, Maryland, 1721-1743.

1989 ◽  
Vol 55 (1) ◽  
pp. 107
Author(s):  
Elizabeth A. Kessel ◽  
Grace L. Tracey ◽  
John P. Dern
Keyword(s):  
Frederick County ◽  
Early Settlement
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