scholarly journals Fire Regimes of Remnant Pitch Pine Communities in the Ridge and Valley Region of Central Pennsylvania, USA

Forests ◽  
2016 ◽  
Vol 7 (12) ◽  
pp. 224 ◽  
Author(s):  
Joseph Marschall ◽  
Michael Stambaugh ◽  
Benjamin Jones ◽  
Richard Guyette ◽  
Patrick Brose ◽  
...  
Keyword(s):  
Fire Regimes ◽  
Central Pennsylvania ◽  
Pitch Pine ◽  
Ridge And Valley

Dendroecology and climatic impacts for a relict, old-growth, bog forest in the Ridge and Valley Province of central Pennsylvania, U.S.A.

2001 ◽  
Vol 79 (1) ◽  
pp. 58-69 ◽  
Author(s):  
Marc D. Abrams ◽  
Carolyn A. Copenheaver ◽  
Bryan A. Black ◽  
Saskia van de Gevel
Keyword(s):  
Old Growth ◽  
Central Pennsylvania ◽  
Climatic Impacts ◽  
Ridge And Valley

scholarly journals Wave of fire: an anthropogenic signal in historical fire regimes across central Pennsylvania, USA

Ecosphere ◽  
2018 ◽  
Vol 9 (5) ◽  
pp. e02222 ◽  
Author(s):  
Michael C. Stambaugh ◽  
Joseph M. Marschall ◽  
Erin R. Abadir ◽  
Benjamin C. Jones ◽  
Patrick H. Brose ◽  
...  
Keyword(s):  
Fire Regimes ◽  
Central Pennsylvania

Effect of Animal Coaction and Seedbed Condition on Regeneration of Pitch Pine in the Barrens of Central Pennsylvania

Ecology ◽  
1942 ◽  
Vol 23 (3) ◽  
pp. 330-335 ◽  
Author(s):  
William C. Bramble ◽  
Maurice K. Goddard
Keyword(s):  
Central Pennsylvania ◽  
Pitch Pine

Community, edaphic, and historical analysis of mixed oak forests of the Ridge and Valley Province in central Pennsylvania

1992 ◽  
Vol 22 (6) ◽  
pp. 790-800 ◽  
Author(s):  
Gregory J. Nowacki ◽  
Marc D. Abrams
Keyword(s):  
Large Scale ◽  
Historical Analysis ◽  
Detrended Correspondence Analysis ◽  
Oak Forests ◽  
European Settlement ◽  
Central Pennsylvania ◽  
Quercus Species ◽  
History Of ◽  
Successional Species ◽  
Ridge And Valley

Fifty-nine mixed oak stands in the Ridge and Valley Province of central Pennsylvania were sampled to evaluate the potential for oak replacement by later successional species or oak stability across a diverse landscape. Using species importance, stands were separated into four groups along detrended correspondence analysis axes 1 and 2. Betulalenta L.–Quercusprinus L.–Quercusrubra L. and Q. prinus–Q. rubra groups occurred on sandstone-based Inceptisols and Ultisols on ridges, whereas mixed–Quercus and Quercusalba L. groups were representative of limestone-based Alfisols on valley floors. Quercus species dominated the overstory of all groups; however, the understories mainly comprised shade-adapted Acerrubrum L., Acerpensylvanicum L., and (or) B. lenta on the xeric ridges and A. rubrum and Prunusserotina Ehrh. in the mesic valleys. The presettlement forests consisted of Quercus, Pinus, and Castaneadentata (Marsh.) Borkh. on the ridges and Quercus, Pinus, and Carya in the valleys. Comparisons between presettlement and present-day forests indicate that Pinusstrobus L. and C. dentata have declined dramatically, whereas Quercus species have increased. Changes in disturbance patterns following European settlement (e.g., the charcoal iron industry) initially favored Quercus expansion, followed later by increases in Acer, Prunus, and Betula. Under existing conditions where large-scale disturbances from fire or logging are minimal, Quercus species are expected to decline slowly in importance, being replaced by Acer, Prunus, and (or) Betula species regardless of site moisture relations. Thus, mixed oak forests do not appear to represent a prominent edaphic climax in the region, despite the long history of oak domination.

Genesis of soils and landscapes in the Ridge and Valley province of central Pennsylvania

Geomorphology ◽  
1990 ◽  
Vol 3 (3-4) ◽  
pp. 245-261 ◽  
Author(s):  
Edward J. Ciolkosz ◽  
Brian J. Carter ◽  
Michael T. Hoover ◽  
Richard C. Cronce ◽  
William J. Waltman ◽  
...  
Keyword(s):  
Central Pennsylvania ◽  
Ridge And Valley ◽  
Genesis Of Soils

Dendroecology and climatic impacts for a relict, old-growth, bog forest in the Ridge and Valley Province of central Pennsylvania, U.S.A.

2001 ◽  
Vol 79 (1) ◽  
pp. 58-69 ◽  
Author(s):  
Marc D Abrams ◽  
Carolyn A Copenheaver ◽  
Bryan A Black ◽  
Saskia van de Gevel
Keyword(s):  
Tree Ring ◽  
Picea Mariana ◽  
Abies Balsamea ◽  
Tsuga Canadensis ◽  
Selective Logging ◽  
Small Scale ◽  
Central Pennsylvania ◽  
History Of ◽  
Wet Climate ◽  
Ridge And Valley

We report on the 440-year dendrochronological history of a relict, bog forest in the Ridge and Valley Province of central Pennsylvania that contains extreme southern, disjunct populations of Picea mariana (Mill.) BSP and Abies balsamea (L.) Mill. The forest is dominated by Tsuga canadensis (L.) Carr. (49% relative importance value), Picea mariana (16%), and Acer rubrum L. (15%). The few remaining Abies balsamea trees are in a advanced state of decline. Many Nyssa sylvatica Marsh. and T. canadensis trees recruited from 1560 and 1700, respectively, until 1890. However, the majority of the other tree species recruited during a 40-year period following selective logging of the forest in the 1890s and fires in about 1900 and 1914. We found a scarcity of tree saplings and no evidence of recruitment into the tree-size class for any species after 1950. The master tree-ring chronology for both N. sylvatica and T. canadensis exhibits a marked increase after the 1890s logging and a decrease after a 1900 fire. In addition, a large number of releases in individual tree chronologies occurred over the last 400 years, indicating the frequent occurrence of small-scale disturbances. Tree-ring growth during the 20th century was reduced by droughts and cool temperatures in the 1920s and in the early to middle 1960s. Abies balsamea cores exhibit a marked growth decline in 1986. Tsuga canadensis growth was very low between 1970 and 1998, despite a generally warm and wet climate during that time. Picea mariana had a dramatic increase in growth during very warm and wet climate between 1995 and 1998. Most Abies balsamea trees have reached their pathological age of 50-85 years and have active Armillaria root rot, insect infestations, and very poorly developed crowns. These symptoms or severe growth declines are not present in Picea mariana. It appears that the 10 000 year history of Abies balsamea presence at Bear Meadows will end soon, with no opportunity to reestablish itself because of the lack of a local seed source. The results of this study suggest that relict tree populations in the eastern United States may be particularly sensitive to direct and indirect anthropogenic impacts and climatic variations, and represent important benchmarks for comparisons with future studies.Key words: tree rings, disturbance, climate, global change, central Pennsylvania.

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