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Qian H, Kessler M, Zhang J, Jin Y, Jiang M. Global patterns and climatic determinants of phylogenetic structure of regional fern floras. THE NEW PHYTOLOGIST 2023; 239:415-428. [PMID: 36994609 DOI: 10.1111/nph.18920] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 03/26/2023] [Indexed: 06/02/2023]
Abstract
Knowledge of relationships between phylogenetic structure of a biological assemblage and ecological factors that drive the variation of phylogenetic structure among regions is crucial for understanding the causes of variation in taxonomic composition and richness among regions, but this knowledge is lacking for the global flora of ferns. Here, we fill this critical knowledge gap. We divided the globe into 392 geographic units on land, collated species lists of ferns for each geographic unit, and used different phylogenetic metrics (tip- vs basal-weighted) reflecting different evolutionary depths to quantify phylogenetic structure. We then related taxonomic and phylogenetic structure metrics to six climatic variables for ferns as a whole and for two groups of ferns (old clades vs polypods) reflecting different evolutionary histories across the globe and within each continental region. We found that when old clades and polypods were considered separately, temperature-related variables explained more variation in these metrics than did precipitation-related variables in both groups. When analyses were conducted for continental regions separately, this pattern holds in most cases. Climate extremes have a stronger relationship with phylogenetic structure of ferns than does climate seasonality. Climatic variables explained more variation in phylogenetic structure at deeper evolutionary depths.
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Affiliation(s)
- Hong Qian
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
- Research and Collections Center, Illinois State Museum, 1011 East Ash Street, Springfield, IL, 62703, USA
| | - Michael Kessler
- Department of Systematic Botany, University of Zurich, Zurich, 8008, Switzerland
| | - Jian Zhang
- Center for Global Change and Complex Ecosystems, Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
| | - Yi Jin
- Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Karst Mountainous Areas of Southwestern China, Guizhou Normal University, Guiyang, 550025, China
| | - Meichen Jiang
- Center for Global Change and Complex Ecosystems, Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, China
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2
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Karichu MJ, Ngarega BK, Onjalalaina GE, Kamau P, Sessa EB. The potential distributions of African
Azolla
species and their implications for African wetland ecosystems for the future. Ecol Evol 2022. [DOI: 10.1002/ece3.9210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
| | - Boniface K. Ngarega
- Centre for Integrative Conservation, Xishuangbanna Tropical Botanical Garden Chinese Academy of Sciences Menglun China
- University of Chinese Academy of Sciences Beijing China
| | - Guy E. Onjalalaina
- University of Chinese Academy of Sciences Beijing China
- Faculty of Sciences University of Antananarivo Antananarivo Madagascar
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden Chinese Academy of Sciences Wuhan China
| | - Peris Kamau
- Botany Department National Museums of Kenya Nairobi Kenya
| | - Emily B. Sessa
- Department of Biology University of Florida Gainesville Florida USA
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3
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Yan Li, Chang Y, He X, Xu S, Su D. Effect of Environmental Factors on the Spatial Diversity Distribution Patterns of Lycophytes and Ferns in Northeast China. RUSS J ECOL+ 2022. [DOI: 10.1134/s1067413622020096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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4
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Bulafu C, Mucunguzi P, Sabakaki PZ. Species richness and distribution of terrestrial ferns in tropical forest fragments in and around Kampala central, Uganda. Afr J Ecol 2022. [DOI: 10.1111/aje.12987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Collins Bulafu
- Department of Plant Sciences, Microbiology and Biotechnology Makerere University Kampala Uganda
| | - Patrick Mucunguzi
- Department of Plant Sciences, Microbiology and Biotechnology Makerere University Kampala Uganda
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Gasper ALD, Grittz GS, Russi CH, Schwartz CE, Rodrigues AV. Expected impacts of climate change on tree ferns distribution and diversity patterns in subtropical Atlantic Forest. Perspect Ecol Conserv 2021. [DOI: 10.1016/j.pecon.2021.03.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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Fierascu I, Fierascu RC, Ungureanu C, Draghiceanu OA, Soare LC. Application of Polypodiopsida Class in Nanotechnology-Potential towards Development of More Effective Bioactive Solutions. Antioxidants (Basel) 2021; 10:748. [PMID: 34066800 PMCID: PMC8151343 DOI: 10.3390/antiox10050748] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 04/29/2021] [Accepted: 05/05/2021] [Indexed: 12/23/2022] Open
Abstract
The area of phytosynthesized nanomaterials is rapidly developing, with numerous studies being published yearly. The use of plant extracts is an alternative method to reduce the toxic potential of the nanomaterials and the interest in obtaining phytosynthesized nanoparticles is usually directed towards accessible and common plant species, ferns not being explored to their real potential in this field. The developed nanoparticles could benefit from their superior antimicrobial and antioxidant properties (compared with the nanoparticles obtained by other routes), thus proposing an important alternative against health care-associated and drug-resistant infections, as well as in other types of applications. The present review aims to summarize the explored application of ferns in nanotechnology and related areas, as well as the current bottlenecks and future perspectives, as emerging from the literature data.
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Affiliation(s)
- Irina Fierascu
- National Institute for Research & Development in Chemistry and Petrochemistry-ICECHIM, 060021 Bucharest, Romania;
- Faculty of Horticulture, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 011464 Bucharest, Romania
| | - Radu Claudiu Fierascu
- National Institute for Research & Development in Chemistry and Petrochemistry-ICECHIM, 060021 Bucharest, Romania;
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University “Politehnica” of Bucharest, 011061 Bucharest, Romania
| | - Camelia Ungureanu
- Department of General Chemistry, University “Politehnica” of Bucharest, 011061 Bucharest, Romania
| | - Oana Alexandra Draghiceanu
- Department of Natural Sciences, University of Pitesti, 1 Targu din Vale Str., 110040 Pitesti, Romania; (O.A.D.); (L.C.S.)
| | - Liliana Cristina Soare
- Department of Natural Sciences, University of Pitesti, 1 Targu din Vale Str., 110040 Pitesti, Romania; (O.A.D.); (L.C.S.)
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Sureshkumar J, Ayyanar M, Silambarasan R. Pteridophyte species richness along elevation gradients in Kolli Hills of the Eastern Ghats, India. JOURNAL OF ASIA-PACIFIC BIODIVERSITY 2020. [DOI: 10.1016/j.japb.2019.11.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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8
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Abotsi KE, Kokou K, Dubuisson JY, Rouhan G. A first checklist of the Pteridophytes of Togo (West Africa). Biodivers Data J 2018; 6:e24137. [PMID: 29904271 PMCID: PMC5999689 DOI: 10.3897/bdj.6.e24137] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 05/24/2018] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND The present work proposes, for the first time, a study exclusively focused on the diversity of Pteridophytes in Togo.The study was based on fieldwork that resulted in 869 new collections gathered between 2013 and 2017 in the country and on yet existing herbarium specimens kept at the Herbaria of Lomé and Paris. Thus, a total number of 1092 specimens collected throughout the country served as a basis for this work, to which were added the known, published occurrences of Pteridophytes for the country. NEW INFORMATION At the end of this study, a total diversity of 134 species belonging to 53 genera and 25 families and 12 orders were recorded and documented for the country. It results in 73 newly cited species for Togolese flora, including 61 spontaneous species. Lycopodiopsida (18 species) and Polypodiopsida (116 species) classes are both represented. The Polypodiales order is the most represented with 97 species. The Pteridaceae and Aspleniaceae families are the most diverse with 24 and 22 species respectively. Finally, notes were provided on species distribution at national level.
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Affiliation(s)
| | - Kouami Kokou
- Laboratory of Forestry Research, University of Lomé, Lomé, Togo
| | - Jean-Yves Dubuisson
- Institut Systématique Evolution Biodiversité (ISYEB), Sorbonne Université, MNHN, CNRS, EPHE, 57 rue Cuvier CP 39, Paris, France
| | - Germinal Rouhan
- Institut Systématique Evolution Biodiversité (ISYEB), Muséum national d'Histoire naturelle, CNRS, Sorbonne Université, EPHE, 57 rue Cuvier CP 39, Paris, France
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10
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Madagascar sheds new light on the molecular systematics and biogeography of grammitid ferns: New unexpected lineages and numerous long-distance dispersal events. Mol Phylogenet Evol 2017; 111:1-17. [DOI: 10.1016/j.ympev.2017.03.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 03/02/2017] [Accepted: 03/03/2017] [Indexed: 12/22/2022]
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Magill CR, Ashley GM, Domínguez-Rodrigo M, Freeman KH. Dietary options and behavior suggested by plant biomarker evidence in an early human habitat. Proc Natl Acad Sci U S A 2016; 113:2874-9. [PMID: 26903646 PMCID: PMC4801266 DOI: 10.1073/pnas.1507055113] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The availability of plants and freshwater shapes the diets and social behavior of chimpanzees, our closest living relative. However, limited evidence about the spatial relationships shared between ancestral human (hominin) remains, edible resources, refuge, and freshwater leaves the influence of local resources on our species' evolution open to debate. Exceptionally well-preserved organic geochemical fossils--biomarkers--preserved in a soil horizon resolve different plant communities at meter scales across a contiguous 25,000 m(2) archaeological land surface at Olduvai Gorge from about 2 Ma. Biomarkers reveal hominins had access to aquatic plants and protective woods in a patchwork landscape, which included a spring-fed wetland near a woodland that both were surrounded by open grassland. Numerous cut-marked animal bones are located within the wooded area, and within meters of wetland vegetation delineated by biomarkers for ferns and sedges. Taken together, plant biomarkers, clustered bone debris, and hominin remains define a clear spatial pattern that places animal butchery amid the refuge of an isolated forest patch and near freshwater with diverse edible resources.
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Affiliation(s)
| | - Gail M Ashley
- Department of Earth and Planetary Sciences, Rutgers University, Piscataway, NJ 08854
| | | | - Katherine H Freeman
- Department of Geosciences, The Pennsylvania State University, University Park, PA 16802
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12
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Zhu SD, Li RH, Song J, He PC, Liu H, Berninger F, Ye Q. Different leaf cost-benefit strategies of ferns distributed in contrasting light habitats of sub-tropical forests. ANNALS OF BOTANY 2016; 117:497-506. [PMID: 26684751 PMCID: PMC4765538 DOI: 10.1093/aob/mcv179] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 10/14/2015] [Indexed: 05/29/2023]
Abstract
BACKGROUND AND AIMS Ferns are abundant in sub-tropical forests in southern China, with some species being restricted to shaded understorey of natural forests, while others are widespread in disturbed, open habitats. To explain this distribution pattern, we hypothesize that ferns that occur in disturbed forests (FDF) have a different leaf cost-benefit strategy compared with ferns that occur in natural forests (FNF), with a quicker return on carbon investment in disturbed habitats compared with old-growth forests. METHODS We chose 16 fern species from contrasting light habitats (eight FDF and eight FNF) and studied leaf functional traits, including leaf life span (LLS), specific leaf area (SLA), leaf nitrogen and phosphorus concentrations (N and P), maximum net photosynthetic rates (A), leaf construction cost (CC) and payback time (PBT), to conduct a leaf cost-benefit analysis for the two fern groups. KEY RESULTS The two groups, FDF and FNF, did not differ significantly in SLA, leaf N and P, and CC, but FDF had significantly higher A, greater photosynthetic nitrogen- and phosphorus-use efficiencies (PNUE and PPUE), and shorter PBT and LLS compared with FNF. Further, across the 16 fern species, LLS was significantly correlated with A, PNUE, PPUE and PBT, but not with SLA and CC. CONCLUSIONS Our results demonstrate that leaf cost-benefit analysis contributes to understanding the distribution pattern of ferns in contrasting light habitats of sub-tropical forests: FDF employing a quick-return strategy can pre-empt resources and rapidly grow in the high-resource environment of open habitats; while a slow-return strategy in FNF allows their persistence in the shaded understorey of old-growth forests.
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Affiliation(s)
- Shi-Dan Zhu
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, 723 Xingke Road, Guangzhou 510650, China
| | - Rong-Hua Li
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, 723 Xingke Road, Guangzhou 510650, China, University of Chinese Academy of Sciences, 19A Yuquan road, Beijing 100049, China and
| | - Juan Song
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, 723 Xingke Road, Guangzhou 510650, China, University of Chinese Academy of Sciences, 19A Yuquan road, Beijing 100049, China and
| | - Peng-Cheng He
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, 723 Xingke Road, Guangzhou 510650, China, University of Chinese Academy of Sciences, 19A Yuquan road, Beijing 100049, China and
| | - Hui Liu
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, 723 Xingke Road, Guangzhou 510650, China
| | - Frank Berninger
- Department of Forest Sciences, University of Helsinki, 224 Helsingin Yliopisto, Finland
| | - Qing Ye
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, 723 Xingke Road, Guangzhou 510650, China,
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13
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Kamiński MJ. Phylogenetic reassessment and biogeography of theEctateusgeneric group (Coleoptera: Tenebrionidae: Platynotina). Zool J Linn Soc 2015. [DOI: 10.1111/zoj.12263] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Abotsi KE, Radji AR, Rouhan G, Dubuisson JY, Kokou K. The Pteridaceae family diversity in Togo. Biodivers Data J 2015; 3:e5078. [PMID: 26312048 PMCID: PMC4549653 DOI: 10.3897/bdj.3.e5078] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Accepted: 07/10/2015] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND The Pteridaceae family is the largest fern family in Togo by its specific and generic diversity. Like all other families of ferns in the country, Pteridaceae are poorly studied and has no identification key. The objective of this study is to perform a taxonomic revision and list establishment of this family of leptosporangiate ferns in the light of current available knowledge about the family. Pteridaceae was also assessed in terms of its diversity and conservation status, this was conducted through the recent field data and the existing herbaria specimens. The current study permits to confirm the presence of Pteris similis Kuhn. which brought the number of Pteridaceae to 17 in Togo. NEW INFORMATION This study provides first local scientific information about the fern flora of Togo. It confirmed the presence of Pterissimilis Kuhn. in Togo and brought the Pteridaceae family diversity to 17 species. A species identification key is provided for the easy identification of the Pteridaceae of Togo.
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Affiliation(s)
| | | | - Germinal Rouhan
- Museum National d'Histoire Naturelle, Paris cedex 05, France
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Nagalingum NS, Knerr N, Laffan SW, González-Orozco CE, Thornhill AH, Miller JT, Mishler BD. Continental scale patterns and predictors of fern richness and phylogenetic diversity. Front Genet 2015; 6:132. [PMID: 25926846 PMCID: PMC4396410 DOI: 10.3389/fgene.2015.00132] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Accepted: 03/19/2015] [Indexed: 12/02/2022] Open
Abstract
Because ferns have a wide range of habitat preferences and are widely distributed, they are an ideal group for understanding how diversity is distributed. Here we examine fern diversity on a broad-scale using standard and corrected richness measures as well as phylogenetic indices; in addition we determine the environmental predictors of each diversity metric. Using the combined records of Australian herbaria, a dataset of over 60,000 records was obtained for 89 genera to infer richness. A molecular phylogeny of all the genera was constructed and combined with the herbarium records to obtain phylogenetic diversity patterns. A hotspot of both taxic and phylogenetic diversity occurs in the Wet Tropics of northeastern Australia. Although considerable diversity is distributed along the eastern coast, some important regions of diversity are identified only after sample-standardization of richness and through the phylogenetic metric. Of all of the metrics, annual precipitation was identified as the most explanatory variable, in part, in agreement with global and regional fern studies. However, precipitation was combined with a different variable for each different metric. For corrected richness, precipitation was combined with temperature seasonality, while correlation of phylogenetic diversity to precipitation plus radiation indicated support for the species-energy hypothesis. Significantly high and significantly low phylogenetic diversity were found in geographically separate areas. These separate areas correlated with different climatic conditions such as seasonality in precipitation. The phylogenetic metrics identified additional areas of significant diversity, some of which have not been revealed using traditional taxonomic analyses, suggesting that different ecological and evolutionary processes have operated over the continent. Our study demonstrates that it is possible and vital to incorporate evolutionary metrics when inferring biodiversity hotspots from large compilations of data.
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Affiliation(s)
- Nathalie S. Nagalingum
- National Herbarium of New South Wales, Royal Botanic Gardens and Domain TrustSydney, NSW, Australia
| | - Nunzio Knerr
- Centre for Australian National Biodiversity Research, Commonwealth Scientific and Industrial Research Organisation Plant IndustryCanberra, ACT, Australia
| | - Shawn W. Laffan
- Centre for Ecosystem Science, School of Biological, Earth and Environmental Sciences, University of New South WalesSydney, NSW, Australia
| | - Carlos E. González-Orozco
- Centre for Australian National Biodiversity Research, Commonwealth Scientific and Industrial Research Organisation Plant IndustryCanberra, ACT, Australia
- Institute for Applied Ecology and Collaborative Research Network for Murray-Darling Basin Futures, University of CanberraACT, Australia
| | - Andrew H. Thornhill
- Centre for Australian National Biodiversity Research, Commonwealth Scientific and Industrial Research Organisation Plant IndustryCanberra, ACT, Australia
- Australian Tropical Herbarium, James Cook UniversityCairns, QLD, Australia
| | - Joseph T. Miller
- Centre for Australian National Biodiversity Research, Commonwealth Scientific and Industrial Research Organisation Plant IndustryCanberra, ACT, Australia
| | - Brent D. Mishler
- University and Jepson Herbaria, and Department of Integrative Biology, University of CaliforniaBerkeley, CA, USA
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Stein A, Kreft H. Terminology and quantification of environmental heterogeneity in species-richness research. Biol Rev Camb Philos Soc 2014; 90:815-36. [DOI: 10.1111/brv.12135] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Revised: 07/05/2014] [Accepted: 07/09/2014] [Indexed: 11/26/2022]
Affiliation(s)
- Anke Stein
- Biodiversity, Macroecology & Conservation Biogeography Group; University of Göttingen; Büsgenweg 1 37077 Göttingen Germany
| | - Holger Kreft
- Biodiversity, Macroecology & Conservation Biogeography Group; University of Göttingen; Büsgenweg 1 37077 Göttingen Germany
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LIN SHENGPAN, MOORE NATHANJ, MESSINA JOSEPHP, WU JIAPING. Evaluation of MODIS surrogates for meteorological humidity data in east Africa. INTERNATIONAL JOURNAL OF REMOTE SENSING 2013; 34:4669-4679. [PMID: 23956475 PMCID: PMC3744380 DOI: 10.1080/01431161.2013.781288] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Satellite remote sensing technology has shown promising results in characterizing the environment in which plants and animals thrive. Remote sensing scientists, biologists, and epidemiologists are adopting remotely sensed imagery to compensate for the paucity of weather information measured by weather stations. With measured humidity from three stations as baselines, our study reveals that Normalised Difference Vegetation Index (NDVI) and atmosphere saturation deficits at the 780 hPa pressure level (DMODIS), both of which were derived from the MODerate-resolution Imaging Spectroradiometer (MODIS) sensor, were significantly correlated with station saturation deficits (Dstn)(ȣrȣ = 0.42-0.63, p < 0.001). These metrics have the potential to estimate saturation deficits over east Africa. Four to nine days of lags were found in the NDVI responding to Dstn. For the daily estimations of Dstn, DMODIS had a better performance than the NDVI. However, both of them poorly explained the variances in daily Dstn using simple regression models (adj. R2 = 0.17-0.39). When the estimation temporal scale was changed to 16-day, their performances were similar, and both were better than daily estimations. For Dstn estimations at coarser geographic scales, given that many factors such as soil, vegetation, slope, aspect, and wind speed might complicate the NDVI response lags and model construction, DMODIS is more favourable as a proxy of the saturation deficit over ground due to its simple relationship with Dstn.
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Affiliation(s)
- SHENGPAN LIN
- College of Environment and Natural Resources, Zhejiang University, Hangzhou, Zhejiang, China
| | - NATHAN J. MOORE
- College of Environment and Natural Resources, Zhejiang University, Hangzhou, Zhejiang, China
- Department of Geography and Center for Global Change and Earth Observations, Michigan State University, East Lansing, Michigan, USA
| | - JOSEPH P. MESSINA
- Department of Geography and Center for Global Change and Earth Observations, Michigan State University, East Lansing, Michigan, USA
| | - JIAPING WU
- College of Environment and Natural Resources, Zhejiang University, Hangzhou, Zhejiang, China
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Creese C, Lee A, Sack L. Drivers of morphological diversity and distribution in the Hawaiian fern flora: trait associations with size, growth form, and environment. AMERICAN JOURNAL OF BOTANY 2011; 98:956-66. [PMID: 21653508 DOI: 10.3732/ajb.1000237] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
PREMISE OF THE STUDY Hawaii is home to 238 native and 35 alien fern and lycophyte taxa distributed across steep gradients in elevation and resource availability. The fern flora spans a wide range of growth forms, with extraordinary diversity in morphology and plant size. Yet the potential factors underlying this diversity have remained enigmatic. METHODS We used a trait database generated from the most recent and comprehensive survey of Hawaiian ferns and lycophytes to test hypotheses of size-scaling and trait associations with environment and growth form as factors underlying this diversity. We also tested relationships among morphology, taxon abundance and distribution and identified key differences between native and alien taxa. KEY RESULTS Strong trait-trait relationships included geometric scaling of plant dimensions with a tendency for more divided fronds in larger ferns. Trait-environment relationships independent of size included more divided fronds at higher elevation, longer blades in shaded habitats, and fronds with shorter stipes and fewer pinnae in drier habitats. Growth forms differed in mean size with epiphytic and epipetric taxa smaller than terrestrial ferns. Plant size was independent of taxon abundance and distribution across islands, and native and alien ferns did not differ in mean size. Alien taxa were more abundant, especially at lower elevations, apparently due to human land use. CONCLUSIONS These relationships point to linkages of fern form and demography with biogeography and highlight potential flora-scale physiological and morphological adaptations in ferns across contrasting environments.
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Affiliation(s)
- Chris Creese
- Department of Ecology and Evolutionary Biology, University of California Los Angeles, 621 Charles E. Young Drive South Box 951606, Los Angeles, California 90095-1606, USA.
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Kao WY, Lin BL. Phototropic leaf movements and photosynthetic performance in an amphibious fern, Marsilea quadrifolia. JOURNAL OF PLANT RESEARCH 2010; 123:645-53. [PMID: 20091204 DOI: 10.1007/s10265-009-0300-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2009] [Accepted: 11/23/2009] [Indexed: 05/07/2023]
Abstract
Diurnal phototropism has not been reported in ferns. In this study we found that the four leaflets of the amphibious fern Marsilea quadrifolia are capable of adjusting their leaflet angle and leaflet azimuth in response to changes in the position of the sun's direct beam, exhibiting more diaphototropic movements (orienting the plane of the lamina perpendicular to incident light) in the morning and late afternoon, and more paraphototropic movements (orienting the plane of the lamina parallel to incident light) at noon. In addition, by cutting off the leaflet lamina and covering portions of leaflets with black tape, the junction between the leaflet and petiole was found to be responsible for light reception. Among the light spectrum investigated, blue light was the most effective at inducing diaphototropism. The role of diurnal phototropism in enhancing carbon return and ameliorating photoinhibition was also evaluated. It was concluded that diurnal phototropic leaf movement represents one of the plastic responses enabling this amphibious fern to grow under terrestrial conditions.
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Affiliation(s)
- Wen-Yuan Kao
- Institute of Ecology and Evolutionary Biology, National Taiwan University, Taipei, Taiwan.
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20
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Differences in light usage among three fern species of genus Blechnum of contrasting ecological breadth in a forest light gradient. Ecol Res 2009. [DOI: 10.1007/s11284-009-0656-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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