Variation in moss floras of granite outcrops in the southern Piedmont, eastern U.S.A
| Autor: | Randi Korn, David R. Morgan, Lidija Krstec |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Best fitting biology Outcrop Biogeography Plant Science biology.organism_classification 010603 evolutionary biology 01 natural sciences Species-area curve Moss Power model Paleontology Physical geography Ecology Evolution Behavior and Systematics Geology 010606 plant biology & botany Global biodiversity |
| Zdroj: | The Bryologist. 119:16-28 |
| ISSN: | 1938-4378 0007-2745 |
| DOI: | 10.1639/0007-2745-119.1.016 |
| Popis: | Moss floras on granite outcrops in the Piedmont of Georgia and Alabama were studied by conducting thorough inventories of 15 outcrops, with the objective of investigating variation in moss flora composition among granite outcrops of different sizes. Across all 15 study sites 78 species were collected, with the number of species per site ranging from 23 at the smallest to 57 at the largest. Linear and nonlinear regression analyses comparing species number with area and with perimeter length showed that, of the four models tested, three nonlinear models produced substantially better results than the linear model, with the power model producing the best fitting curves among these three. In addition, species number was found to be more closely correlated with perimeter length than with area. Thirty-two of the most frequent species comprised the core group of granite outcrop mosses; they each occurred at 60–100% of the 15 sites and formed the bulk of the floras of all but the two largest outcrops. Eig... |
| Databáze: | OpenAIRE |
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