The relationship of buried, germinating seeds to vegetation in an old-growth Colorado subalpine forest

1978 ◽  
Vol 56 (13) ◽  
pp. 1505-1509 ◽  
Author(s):  
Stephen A. Whipple
Keyword(s):  
Subalpine Forest ◽  
Forest Species ◽  
Forest Stands ◽  
Rapid Loss ◽  
Old Growth ◽  
Old Growth Forest ◽  
Viable Seeds ◽  
Relationship Of ◽  
Germinating Seeds ◽  
The Relationship

Species of buried, germinating seeds and species occurring in the vegetation are compared for two Colorado subalpine forest stands, one dry and one mesic, both over 325 years old. The total numbers of seeds found were small and the correspondence with species in the vegetation was poor. This is consistent with reports from other old-growth forests and may be accounted for by a combination of low seed input and rapid loss of viable seeds from the soil reservoir for old-growth forest species.

scholarly journals Retention Forestry Supports Bird Diversity in Managed, Temperate Hardwood Floodplain Forests

Forests ◽  
2019 ◽  
Vol 10 (4) ◽  
pp. 300 ◽  
Author(s):  
Ivo Machar ◽  
Martin Schlossarek ◽  
Vilem Pechanec ◽  
Lubos Uradnicek ◽  
Ludek Praus ◽  
...  
Keyword(s):  
Hardwood Forests ◽  
Bird Diversity ◽  
Floodplain Forests ◽  
Forest Stands ◽  
Old Growth ◽  
Clear Cutting ◽  
Old Growth Forest ◽  
Oak Trees ◽  
Retention Forestry

The retention forestry approach is considered as one of the potentially effective tools for sustainable forest management for conservation of biodiversity in managed temperate and boreal forests. Retention of old-growth forest structures (e.g., very large old living trees) in forest stands during clear-cutting provides maintenance of key habitats for many old-growth forest interior-species. Most of ecological studies on green tree retention (GTR) consequences for biodiversity have been focused on birds. However, the long-term studies of GTR impacts on forest birds are very poor. In this paper, we focused on assessment of the long-term consequences of leaving legacy oak trees on the cut areas for bird diversity 18–22 years after clear-cutting in managed temperate European hardwood floodplain forests. Results based on bird counting using mapping of bird nesting territories revealed a key importance of legacy oak trees for maintaining bird diversity in the study area. These results are widely applicable for managed temperate hardwood forests with serious dominance of oak (Quercus sp.) in forest stands. Legacy oak trees in this habitat type are keystone structures for bird diversity. Retention approach focused on these trees is potentially an important conservation tool for preserving forest bird diversity and other associated species in temperate hardwood forests managed by clear-cutting.

scholarly journals Plot Size Recommendations for Biomass Estimation in a Midwestern Old-Growth Forest

1998 ◽  
Vol 15 (4) ◽  
pp. 165-168 ◽  
Author(s):  
Martin A. Spetich ◽  
George R. Parker
Keyword(s):  
Deciduous Forest ◽  
Biomass Estimation ◽  
Old Growth ◽  
Acceptable Error ◽  
The Core ◽  
Plot Size ◽  
Large Size ◽  
Old Growth Forest ◽  
Small Plot ◽  
The Relationship

Abstract We examine the relationship between disturbance regime and plot size for woody biomass estimation in a midwestern old-growth deciduous forest from 1926 to 1992. Analysis was done on the core 19.6 ac of a 50.1 ac forest in which every tree 4 in. dbh and greater has been tagged and mapped since 1926. Five windows of time are compared—1926, 1976, 1981, 1986 and 1992. The most efficient plot sizes requiring measurement of the least total area range from 0.02 to 1.6 ac. A small plot size was recommended after grazing disturbance, and a large size was recommended when mortality was high and acceptable error was low. North. J. Appl. For. 15(4):165-168.

scholarly journals Monitoring and assessing old‐growth forest stands by plot sampling

2010 ◽  
Vol 144 (1) ◽  
pp. 171-179 ◽  
Author(s):  
P. Corona ◽  
C. Blasi ◽  
G. Chirici ◽  
L. Facioni ◽  
L. Fattorini ◽  
...  
Keyword(s):  
Forest Stands ◽  
Old Growth ◽  
Plot Sampling ◽  
Old Growth Forest

Structure, composition, and diversity of old-growth black spruce boreal forest of the Clay Belt region in Quebec and Ontario

2003 ◽  
Vol 11 (S1) ◽  
pp. S79-S98 ◽  
Author(s):  
Karen Harper ◽  
Catherine Boudreault ◽  
Louis DeGrandpré ◽  
Pierre Drapeau ◽  
Sylvie Gauthier ◽  
...  
Keyword(s):  
Boreal Forest ◽  
Picea Mariana ◽  
Black Spruce ◽  
Small Scale ◽  
Structural Development ◽  
Spruce Forest ◽  
Forest Stands ◽  
Old Growth ◽  
Old Growth Forest ◽  
Old Growth Forests

Old-growth black spruce (Picea mariana) boreal forest in the Clay Belt region of Ontario and Quebec is an open forest with a low canopy, quite different from what many consider to be "old growth". Here, we provide an overview of the characteristics of old-growth black spruce forest for three different site types on organic, clay, and coarse deposits. Our objectives were (1) to identify the extent of older forests; (2) to describe the structure, composition, and diversity in different age classes; and (3) to identify key processes in old-growth black spruce forest. We sampled canopy composition, deadwood abundance, understorey composition, and nonvascular plant species in 91 forest stands along a chronosequence that extended from 20 to more than 250 years after fire. We used a peak in tree basal area, which occurred at 100 years on clay and coarse sites and at 200 years on organic sites, as a process-based means of defining the start of old-growth forest. Old-growth forests are extensive in the Clay Belt, covering 30–50% of the forested landscape. Black spruce was dominant on all organic sites, and in all older stands. Although there were fewer understorey species and none exclusive to old-growth, these forests were structurally diverse and had greater abundance of Sphagnum, epiphytic lichens, and ericaceous species. Paludification, a process characteristic of old-growth forest stands on clay deposits in this region, causes decreases in tree and deadwood abundance. Old-growth black spruce forests, therefore, lack the large trees and snags that are characteristic of other old-growth forests. Small-scale disturbances such as spruce budworm and windthrow are common, creating numerous gaps. Landscape and stand level management strategies could minimize structural changes caused by harvesting, but unmanaged forest in all stages of development must be preserved in order to conserve all the attributes of old-growth black spruce forest. Key words: boreal forest, old growth, paludification, Picea mariana, structural development, succession.

scholarly journals Relationship of Flowering Time, Rate of Seed Germination, and Time of Leaf Budbreak and Usefulness in Selecting for Late-flowering Apples

1991 ◽  
Vol 116 (3) ◽  
pp. 565-568 ◽  
Author(s):  
Shawn A. Mehlenbacher ◽  
Anna M. Voordeckers
Keyword(s):  
Genetic Variation ◽  
Seed Germination ◽  
Time Rate ◽  
Late Flowering ◽  
Chilling Temperatures ◽  
Selection For ◽  
Highly Correlated ◽  
Relationship Of ◽  
Germinating Seeds ◽  
The Relationship

The relationship between dormancy of seeds and buds of apple (Malus × domestica Borkh.) might provide breeders with an early opportunity to select for delayed development. Seeds of late-flowering genotypes require much longer exposure to chilling temperatures than those of early flowering” genotypes, and they germinate over a much longer period. In three progenies that exhibit much variation for the two traits, seed germination time was correlated with time of leafing-out of the resulting seedlings, and could be used to select for delayed budbreak. However, selection would be ineffective when little genetic variation for seed germination and budbreak is present. Leafing-out ratings in the nursery in the 2nd year were highly correlated with those in the 3rd year, indicating that selection for late leafing in the nursery during the 2nd year would be more effective than selection based on seed dormancy, especially in progenies exhibiting little genetic variability for this trait. Breeders can effectively use both relationships by first eliminating early germinating seeds and then eliminating early leafing seedlings.

New and interesting lichen records from old-growth forest stands in the German National Park Bayerischer Wald

Nova Hedwigia ◽  
2002 ◽  
Vol 74 (1-2) ◽  
pp. 25-49 ◽  
Author(s):  
Christian Printzen ◽  
Josef Halda ◽  
Zdeněk Tønsberg Palice
Keyword(s):  
National Park ◽  
Forest Stands ◽  
Old Growth ◽  
Old Growth Forest

Effects of forest age on fruit composition and removal in tropical bird-dispersed understorey trees

2009 ◽  
Vol 25 (5) ◽  
pp. 515-522 ◽  
Author(s):  
Heather A. Lumpkin ◽  
W. Alice Boyle
Keyword(s):  
Secondary Forest ◽  
Interspecific Interactions ◽  
Land Use Changes ◽  
Light Availability ◽  
Forest Age ◽  
Forest Species ◽  
Fruit Removal ◽  
Old Growth ◽  
Removal Rates ◽  
Old Growth Forest

Abstract:Little is known about how land-use changes affect interspecific interactions such as fruit–frugivore mutualisms. Forest age could affect both fruit sugar concentrations via differences in light availability or disperser abundance, and fruit removal rates via differences in bird and plant community composition. We examined how these two factors are affected by forest age in a Costa Rican rain forest. We compared seven young-secondary forest species, seven old-growth forest species, andMiconia nervosagrowing in both forests. We measured sugar concentrations in fruits and manipulated the location of paired fruiting branches, measuring subsequent fruit removal. Sugar concentration means were on average 2.1 percentage points higher in young-secondary forest species than in old-growth forest species, but did not differ amongMiconia nervosafruits from the two forests. Fruit removal rates were higher in young-secondary forest for 86% of young-secondary forest species, 71% of old-growth forest species, and on average for both young-secondary and old-growth forestMiconia nervosaindividuals. Higher sugar concentrations in young-secondary forest plants could reflect stronger competition for dispersers, while experimental fruit removal results suggests the opposite patterns of competition; fruits are more likely to be removed by dispersers in young-secondary forest independent of fruit nutrient concentration.

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