Tree planting by tenants in County Down during the eighteenth and nineteenth centuries
Afforestation ; Eighteenth Century ; Forest ; Historical geography ; Nineteenth Century ; Northern Ireland ; Rural landscape ; Tree ; Tree species ; United Kingdom
Registers of tenant tree planting between 1769 and 1909 are examined. 5.13 million trees were planted. Registrations were highest in the decade 1810-29, declining sharply in the mid-1830s. Numbers of trees planted peaked in the 1820-29 and 1830-39
decades as plantations became prominent. Three quarters of trees planted were conifers and larch accounted for 51% of all trees planted. Landscape impacts of planting are discussed in comparison with present woodlands and trees.
Fluvial process and the establishment of bottomland trees
Flood ; Hydraulic works ; Meander ; Missouri ; Montana ; Spatial variation ; Stream ; Tree ; United States of America ; Vegetation
The effects of river regulation on bottomland tree communities in western North America have generated substantial concern because of the important habitat and aesthetic values of these communities. Consideration of such effects in water management
decisions has been hampered by the apparent varaibility of responses of bottomland tree communities to flow alteration. When the relation between streamflow and tree establishment is placed in a geomorphic context, however, much of that variability
is explained, and prediction of changes in tree community is improved.
Tree-ring analysis and Quaternary geology: principles and recent applications
This paper presents a review of recent advances and applications in the field of dendrogeomorphology over the last decades. Emphasis here is placed on those applications that utilize tree-ring chronologies to extract information on the timing
and extent of past geomorphic changes. Examples are presented to illustrate how trees record Quaternary events, to emphasize the importance of tree-ring crossdating in the determination of precise calendar dates of events and, to show the utility of tree
1996
[b1] Tree-ring Laboratory, Lamont-Doherty Earth Observatory, Palisades, NY 1096, Etats-Unis
Tropical tree stand structures on a seasonally flooded elevation gradient in Northern Australia
Australia ; Fire ; Floodplain ; Forest ; Mortality ; Northern Territory ; Population dynamics ; Spatial variation ; Tree ; Tropical rain forest ; Tropical zone
The objective of this paper is to determine if there is any evidence of expansion or contraction of five dominant trees across the elevation gradient above a seasonal floodplain. Spatial variation in the size-class distributions of the five dominant
tree species is determined. The mortality of different stem sizes of the five species following a wildfire is also determined by analysing the data set of Bowman and Panton (1994). These data also provide insights into the regeneration processes
Australia ; Biogeography ; Chile ; Ecology ; New Caledonia ; New Zealand ; Pacific Region ; Papua New Guinea ; Phytogeography ; Tree
Excellent treatment of distribution, history, and ecology of the tree genus Nothofagus with the collaboration of more than 20 specialists. This genus occurs in New Zealand, Australia, New Guinea, New Caledonia, Chile and Argentina and as fossils
This paper presents the findings of very recent research on the Lower Grindelwald Glacier (Bernese Alps). Numerous samples of palaeosols and fossil wood (tree trunks, roots and macro-remains) found in the lateral Stieregg and Zäsenberg moraines
between 1986 and 1990 were radiocarbon dated. Owing to the good condition of several fossil tree trunks, dendrochronological analyses were also conducted. The AA. evaluate even more precisely how tongue-length and volume of the Lower Grindelwald Glacier
This paper compares the detailed recent oscillation histories of the San Quintin and San Rafael Glaciers in southern Chile and relates these to climatic data. Earlier reports, maps, aerial photographs, and tree-ring dates for moraines are used
Carbon cycle ; Deforestation ; Developing countries ; Forest ; Global change ; Greenhouse effect ; Human impact ; Natural resources ; Spatial variation ; Tree line ; Tropical zone ; Water deficit
réchauffement planétaire se confirme, la répartition des grands biomes devrait s'en trouver affectée: remontée en latitude de la tree-line, élévation altitudinale de la limite supérieure de la forêt, stress hydrique accru de certaines forêts sèches tropicales
This paper reports the results of a comparison of wood anatomy of T. occidentalis collected from old living trees, from subaerially exposed stems that started to grow between 3500 and 1600 cal yr B.P., and from submerged stems in growth position