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- and P. glauca in Thuja-Betula forests. (1)
- A lack of suitable substrate is thought to be limiting their seedling establishment so I asked which substrates the seedlings preferred in the old forest. To answer both questions (1)
- A stump (rather than a log). For B. alleghaniensis seedlings (1)
- Abies balsamea (1)
- Amonia (1)
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- And Acer saccharum. Although CWD covered 5% of the ground in this old forest (1)
- And is also limited by the availability of canopy gaps. Its seedlings preferred CWD that was (1)
- And the uncommon Picea glauca were found exclusively on coarse woody debris (CWD) rather than leaf litter. I used a generalized linear mixed effects model to rank the influence of each type of CWD on seedling density while comparing their influence to that of site level variables. T. occidentalis regeneration is failing (1)
- Archaeabacteria (1)
- B. alleghaniensis (1)
- CWD traits were almost twice as influential as site level variables. High decay class CWD was the most important factor for seedlings of the uncommon canopy species P. glauca (1)
- Competition (1)
- Conifer wood. Site level variables did not influence T. occidentalis seedling density. B. alleghaniensis may be replacing itself in the canopy but only just (1)
- Due to either herbivory or a lack of light. Its seedlings did show significant preferences for CWD that was (1)
- Facilitation (1)
- Highly decayed (1)
- I measured the seedling densities of all canopy tree species across height classes and substrate types within twenty 100m2 plots. T. occidentalis (1)
- In decreasing order of importance: moss covered (1)
- In decreasing order: moss covered (1)
- It is much less abundant in rotation harvested forests. Adequate quantity and quality of CWD is a vital factor for natural regeneration of T. occidentalis (1)
- Marsh ecology (1)
- Moderately decayed (1)
- Northeastern Minnesota’s logging history has altered the forests enough to cause concern about the reproduction of Thuja occidentalis and Betula alleghaniensis. I studied a rare old growth example of an already rare mesic Thuja-Betula forest and asked how well those species were regenerating in that mostly unaltered ecosystem. In managed forests (1)
- Oxidation-reduction reaction (1)
- Plant colonization (1)
- Proteobacteria (1)
- Seed limitation (1)
- Seedling establishment (1)
- Thuja wood (1)
- With no seedlings >10cm tall (1)
Articles 1 - 3 of 3
Full-Text Articles in Physical Sciences and Mathematics
Distribution And Diversity Of Archaeal And Bacterial Ammonia Oxidizers In Salt Marsh Sediments, Nicole S. Moin, Katelyn A. Nelson, Alexander Bush, Anne E. Bernhard
Distribution And Diversity Of Archaeal And Bacterial Ammonia Oxidizers In Salt Marsh Sediments, Nicole S. Moin, Katelyn A. Nelson, Alexander Bush, Anne E. Bernhard
Biology Faculty Publications
Diversity and abundance of ammonia-oxidizing Betaproteobacteria (β-AOB) and archaea (AOA) were investigated in a New England salt marsh at sites dominated by short or tall Spartina alterniflora (SAS and SAT sites, respectively) or Spartina patens (SP site). AOA amoA gene richness was higher than β-AOB amoA richness at SAT and SP, but AOA and β-AOB richness were similar at SAS. β-AOB amoA clone libraries were composed exclusively of Nitrosospira-like amoA genes. AOA amoA genes at SAT and SP were equally distributed between the water column/sediment and soil/sediment clades, while AOA amoA sequences at SAS were primarily affiliated with the …
Seedlings’ Substrate Preferences In A Minnesota Old Growth Thuja-Betula Forest, Stephen C. Rossiter
Seedlings’ Substrate Preferences In A Minnesota Old Growth Thuja-Betula Forest, Stephen C. Rossiter
Environmental Studies Honors Papers
Northeastern Minnesota’s logging history has altered the forests enough to cause concern about the reproduction of Thuja occidentalis and Betula alleghaniensis. I studied a rare old growth example of an already rare mesic Thuja-Betula forest and asked how well those species were regenerating in that mostly unaltered ecosystem. In managed forests, a lack of suitable substrate is thought to be limiting their seedling establishment so I asked which substrates the seedlings preferred in the old forest. To answer both questions, I measured the seedling densities of all canopy tree species across height classes and substrate types within twenty 100m2 plots. …
Dispersal And Establishment Both Limit Colonization During Primary Succession On A Glacier Foreland, Chad C. Jones, Roger Del Moral
Dispersal And Establishment Both Limit Colonization During Primary Succession On A Glacier Foreland, Chad C. Jones, Roger Del Moral
Botany Faculty Publications
Plant colonization can be limited by lack of seeds or by factors that reduce establishment. The role of seed limitation in community assembly is being increasingly recognized, but in early primary succession, establishment failure is still considered more important. We studied the factors limiting colonization on the foreland of Coleman Glacier, Washington, USA to determine the importance of seed and establishment limitation during primary succession. We also evaluated the effects of seed predation, drought and existing vegetation on establishment. We planted seeds of seven species into plots of four different ages and found evidence that both seed and establishment limitation …