A5010183512- Bryophyte Studies and Records
- Botany and Plant Ecology Studies
- Lichen and fungal ecology
- Peatlands and Wetlands Ecology
- Geology and Paleoclimatology Research
- Geological and Geochemical Analysis
- Geological Studies and Exploration
- Flowering Plant Growth and Cultivation
- Coastal wetland ecosystem dynamics
- Geochemistry and Geologic Mapping
- Geological Modeling and Analysis
- Indigenous Studies and Ecology
- History of Science and Natural History
- Arctic and Russian Policy Studies
- Tree-ring climate responses
- Climate change and permafrost
- Polar Research and Ecology
- Mineralogy and Gemology Studies
- Methane Hydrates and Related Phenomena
- Marine and coastal plant biology
- Animal and Plant Science Education
- Archaeology and Natural History
SUNY Oneonta
2013-2024
New York State Museum
2010-2013
University at Albany, State University of New York
2010-2013
Albany State University
2010
New York University
2010
Natural Resources Canada
1972-2002
Abstract The relative importance of global versus local environmental factors for growth and thus carbon uptake the bryophyte genus Sphagnum— main peat‐former ecosystem engineer in northern peatlands—remains unclear. We measured length net primary production (NPP) two abundant Sphagnum species across 99 Holarctic peatlands. tested previously proposed abiotic biotic drivers peatland (climate, N deposition, water table depth vascular plant cover) on these responses. Employing structural...
Abstract. Rain-fed peatlands are dominated by peat mosses (Sphagnum sp.), which for their growth depend on nutrients, water and CO2 uptake from the atmosphere. As isotopic composition of carbon (12,13C) oxygen (16,18O) these Sphagnum affected environmental conditions, tissue accumulated in constitutes a potential long-term archive that can be used climate reconstruction. However, there is inadequate understanding how isotope values influenced restricts current use as palaeoenvironmental...
Until a few years ago, Sphagnum magellanicum was understood to be single widespread species with an intercontinental range. Recent work by Norwegian sphagnologists showed that S. s.str. is restricted southern South America and plants known as in Europe should referred divinum medium. In separate publication, we there are two additional major clades eastern North America, describe them herein diabolicum magniae. These very hard distinguish morphologically (and also from medium) but distinct...
Many alpine bryophytes rely primarily if not exclusively on gametophytic fragments for reproduction. The dispersal role of these fragments, however, has been adequately addressed. objective this study was to determine the extent which disperse summits and reproductive viability those fragments. Airborne diaspores were collected from early spring snow deposits in 2008, 2009, 2010 summit Mt. Marcy, summer propagule traps placed Marcy Algonquin Peak 2009 2010. All identified genus and/or...
The Adirondack Mountains of New York State hold some the southernmost communities alpine vegetation in eastern United States. Containing greatest concentration rare and endangered species State, this ∼12,000-year-old ecosystem is important to understanding ecological history northeastern North America. In order monitor floristic vegetational shifts over time, 11 permanent transects were established 1984 on four summits (Wright, Algonquin, Boundary, Iroquois) MacIntyre Range High Peaks...
The Holantarctic Sphagnum ×falcatulum s.l. is a cryptic species complex comprised of the allo-allo-triploid S. s.s. and its immediate progenitors: haploid (S. cuspidatum) an unnamed allo-diploid species. distributions members this are presently unclear. Prior genetic study has shown that (1) amphi-Pacific most widespread Sphagna in Holantarctic, (2) cuspidatum present Queensland, Australia, (3) plants occur on South Island, New Zealand. Using morphological analyses, we document occurrence...
Abstract Background and Aims Sphagnum (peatmoss) comprises a moss (Bryophyta) clade with ~300–500 species. The genus has unparalleled ecological importance because Sphagnum-dominated peatlands store almost third of the terrestrial carbon pool peatmosses engineer formation microtopography peatlands. Genomic resources for are being actively expanded, but many aspects their biology still poorly known. Among these degree to which species reproduce asexually, relative frequencies male female...
Abstract The use of species as a concept is an important metric for assessing biological diversity and ecosystem function. However, delimiting based on morphological characters can be difficult, especially in aquatic plants that exhibit high levels variation overlap. Sphagnum cuspidatum complex, which includes dominate peatland hollows, provides example challenges delimitation. Microscopic have been used to define taxa the possibility these may simply phenoplastic responses water...
Species delimitation is problematic in many plant groups and among the mosses, Sphagnum one of more contentious genera because high levels morphological variation. The allopolyploid species, majus, comprises such complex. Two morphologically differentiated but overlapping subspecies have been described. We conducted morphometric molecular analyses with samples from around Northern Hemisphere to test for phenotypic phylogenetic differentiation between subspecies. Although field collections...
Abstract Bryophytes generally have broad geographical ranges that suggest high dispersal ability. The aim of this study was to test hypotheses about limitation, as indicated by isolation distance, in four spore-producing species the moss genus Sphagnum (Sphagnum carolinianum, missouricum, macrophyllum and pylaesii) assess whether plants southern USA harbour levels unique alleles and/or other indicators exceptional genetic diversity. Isolation distance detected all species, but regional...
The bryoflora of Martha's Vineyard and Nomans Land has received little organized study. However, these islands 100 mi2 1 mi2, respectively, seven miles south Cape Cod, are considerable bryological interest. They part the Atlantic Coastal Plain located near northern, largely submerged end this physiographic province, which extends southward along entire eastern coast United States. Late Pleistocene glaciers reached as far area, leaving behind massive deposits terminal moraine associated...
Sphagnum magellanicum (Sphagnaceae, Bryophyta) has been considered to be a single semi-cosmopolitan species, but recent molecular analyses have shown that it comprises complex of at least seven reciprocally monophyletic groups, are difficult or impossible distinguish morphologically.
The moss Ptychomitrium serratum (C. Müll. Hal. ex Schimp.) Besch., is native to Mexico and parts of western Texas southern New Mexico, it a rare adventive in the area from East Louisiana Missouri, Tennessee, South Carolina, northward locations near coast York State Massachusetts. In part this calcicole’s range, all collections are past 50 years. Concrete, mortar, rarely asphalt shingle its only known substrata region, which contrasts sharply with common occurrence on limestone portion range....
We deploy Shannon analysis of five ancestrally (ANCE) diagnostic microsatellite loci to explore the patterns ‘deep’ allelic genetic diversity within peat moss Sphagnum ×australe Mitt. s.l. cryptic species complex across its Australasian distribution. There is both notable divergence among and considerable overlap three allopolyploid lineages this complex, two gametophytically allodiploid (R1S1 R2S2) one allotriploid (FR1*S1*). Detailed biogeographic reflect historical differences in...
This study uses microsatellites (SSRs) and nucleotide sequences to explore unresolved questions associated with four of the six Sphagnum species reported for Île Amsterdam: cavernulosum unknown subgenus, S. complanatum islei subg. Subsecunda, plants that initial morphological placed in Cuspidata. Genetic analyses show all belong subgenus Subsecunda none are allopolyploids. The initially Cuspidata shown 'S. africanum' clade closest African truncatum based on morphology. cavernulosum,...
Encalypta sylvatica, a new species of Encalyptaceae from northern China
170 species of bryophytes, including 141 mosses, and 29 liverworts are reported from Delaware County, New York. A total 48 new county records have been recorded. Ulota drummondii, a previously unknown York State, as well the rare Plagiothecium latebricola among for county. This flora is first known county-wide bryophyte survey in Catskills Region State. After examination collections herbaria, field surveys were conducted during spring summer months 2013 2014. To ensure sufficient sampling...