270 likes | 440 Views
WELCOME 2012 Trainees!. THANK YOU!. CORE THEMES Everything is connected Nature is dynamic Human values impact natural systems. Pennsylvania Master Naturalist Understanding Ecoregions.
E N D
CORE THEMES • Everything is connected • Nature is dynamic • Human values impact natural systems
Pennsylvania Master Naturalist Understanding Ecoregions “In every outthrust headland, in every curving beach, in every grain of sand there is the story of the earth.” --Rachel Carson
Ecoregions bring order to something complex – the natural landscape.
Northern PiedmontPiedmont Upland, Piedmont Limestone/ Dolomite Lowland, Triassic Lowland
Northern PiedmontPiedmont Uplands • Rounded hills, low ridges, high relief and narrow valleys. • Substantially higher relief than neighboring ecoregions. • Folded and faulted paleozoic and precambrian metamorphic rock. • Deep Ultisols and Inceptisols are common soils. Chrome soils from serpentinite also occur. • The Chrome soils support eastern serpentine barrens (Chester, Delaware, and Lancaster counties)
Northern PiedmontPiedmont Limestone/Dolomite Lowlands • Nearly level, undulating terrain consisting of sink holes, caverns, and disappearing streams. • Ordovician limestone predominates, dolomite and shale also occur. • Soils are derived largely from carbonate rock and are very fertile. • Soils support a natural vegetation of Appalachian Oak Forest (white and red oak), which has been almost entirely replaced by general farming.
Northern PiedmontTriassic Lowlands • Wide undulating ridges, broad valleys, limited local relief. • Underlain by sedimentary rock. • Soils are derived triassic sandstone, shale, siltstone, and argillite. • Soils support a natural vegetation of Appalachian Oak forest (dominated by red and white oaks). • Supports a mosaic of dairy farms, houses, and woodland.
Natural Communities of the Northern Piedmont
Middle Atlantic Coastal Plain:Delaware River Terraces & Uplands
Middle Atlantic Coastal Plain:Delaware River Terraces & Uplands • Low, nearly level terraces. • Ocean modified climate. • Saline marsh deposits dominate; alluvial and estuarine sand and silt also widespread. • Underlain by unconsolidated and easily eroded Quaternary gravels, sands and silts.
Middle Atlantic Coastal Plain:Delaware River Terraces & Uplands
1777 2007
Middle Atlantic Coastal Plain:Delaware River Terraces & Uplands King Rail Ralas elegans elegans Coastal Plain Leopard Frog Rana utricularia Red-bellied Turtle Pseudemys rubriventris Short-eared Owl Asioflammeusflammeus Bog Turtle Clemmys muhlenbergii
PA Endangered Plants river bank quillwort Isoetes riparia swamp beggar-ticks Bidens bidentoides Arrowhead Sagittaria calycina coast violet Viola brittoniana
The Urban Ecosystem Biological Social Physical/Built