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Sharma P, Rathee S, Ahmad M, Siddiqui MH, Alamri S, Kaur S, Kohli RK, Singh HP, Batish DR. Leaf functional traits and resource use strategies facilitate the spread of invasive plant Parthenium hysterophorus across an elevational gradient in western Himalayas. BMC PLANT BIOLOGY 2024; 24:234. [PMID: 38561674 PMCID: PMC10985864 DOI: 10.1186/s12870-024-04904-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 03/13/2024] [Indexed: 04/04/2024]
Abstract
Parthenium hysterophorus L. (Asteraceae) is a highly prevalent invasive species in subtropical regions across the world. It has recently been seen to shift from low (subtropical) to high (sub-temperate) elevations. Nevertheless, there is a dearth of research investigating the adaptive responses and the significance of leaf functional traits in promoting the expansion to high elevations. The current study investigated the variations and trade-offs among 14 leaf traits (structural, photosynthetic, and nutrient content) of P. hysterophorus across different elevations in the western Himalayas, India. Plots measuring 20 × 40 m were established at different elevations (700 m, 1100 m, 1400 m, and 1800 m) to collect leaf trait data for P. hysterophorus. Along the elevational gradient, significant variations were noticed in leaf morphological parameters, leaf nutrient content, and leaf photosynthetic parameters. Significant increases were observed in the specific leaf area, leaf thickness, and chlorophyll a, total chlorophyll and carotenoid content, as well as leaf nitrogen and phosphorus content with elevation. On the other hand, there were reductions in the amount of chlorophyll b, photosynthetic efficiency, leaf dry matter content, leaf mass per area, and leaf water content. The trait-trait relationships between leaf water content and dry weight and between leaf area and dry weight were stronger at higher elevations. The results show that leaf trait variability and trait-trait correlations are very important for sustaining plant fitness and growth rates in low-temperature, high-irradiance, resource-limited environments at relatively high elevations. To summarise, the findings suggest that P. hysterophorus can expand its range to higher elevations by broadening its functional niche through changes in leaf traits and resource utilisation strategies.
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Affiliation(s)
- Padma Sharma
- Department of Environment Studies, Panjab University, Chandigarh, 160014, India
| | - Sonia Rathee
- Department of Botany, Panjab University, Chandigarh, 160014, India
| | - Mustaqeem Ahmad
- Department of Environment Studies, Panjab University, Chandigarh, 160014, India
| | - Manzer H Siddiqui
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Saud Alamri
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Shalinder Kaur
- Department of Botany, Panjab University, Chandigarh, 160014, India.
| | - Ravinder K Kohli
- Amity University, Sector 82A, IT City, International Airport Road, Mohali, 140 306, India
| | - Harminder Pal Singh
- Department of Environment Studies, Panjab University, Chandigarh, 160014, India
| | - Daizy R Batish
- Department of Botany, Panjab University, Chandigarh, 160014, India
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Duan X. Stoichiometric characteristics of woody plant leaves and responses to climate and soil factors in China. PLoS One 2023; 18:e0291957. [PMID: 37733819 PMCID: PMC10513206 DOI: 10.1371/journal.pone.0291957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 09/08/2023] [Indexed: 09/23/2023] Open
Abstract
The main research content of the field of ecological stoichiometry is the energy of various chemical elements and the interaction between organisms and the environment throughout ecological processes. Nitrogen and phosphorus are the main elements required for the growth and development of plants and these also form the constituent basis of biological organisms. Both elements interact and jointly regulate the growth and development of plants, and their element ratios are an indication of the nutrient utilization rate and nutrient limitation status of plants. Previous research developed a general biogeography model of the stoichiometric relationship between nitrogen and phosphorus in plant leaves on a global scale. Further, it was shown that the relative rate of nitrogen uptake by leaves was lower than that of phosphorus, and the scaling exponent of nitrogen and phosphorus was 2/3. However, it is not clear how the stoichiometric values of nitrogen and phosphorus, especially their scaling exponents, change in the leaves of Chinese woody plants in response to changing environmental conditions. Therefore, data sets of leaf nitrogen and phosphorus concentrations, and nitrogen to phosphorus ratios in Chinese woody plants were compiled and classified according to different life forms. The overall average concentrations of nitrogen and phosphorus in leaves were 20.77 ± 8.12 mg g-1 and 1.58 ± 1.00 mg g-1, respectively. The contents of nitrogen and phosphorus in leaves of deciduous plants were significantly higher than those of evergreen plants. In leaves, life form is the main driving factor of nitrogen content, and mean annual temperature is the main driving factor of phosphorus content; soil available nitrogen is the main driving factor of the nitrogen to phosphorus ratio. These values can be used for comparison with other studies. In addition, the scale index was found to be significantly different among different life forms. The scaling exponents of N-P of woody plants of different life forms, such as trees, shrubs, evergreen, deciduous, and coniferous plants are 0.67, 0.72, 0.63, 0.72, and 0.66, respectively. The N-P scaling exponent of shrubs was higher than that of trees, and that of deciduous plants was higher than that of evergreen plants. These results suggest that the internal attributes of different life forms, the growth rate related to phosphorus, and the relative nutrient availability of soil are the reasons for the unsteady relationship between nitrogen and phosphorus in leaves.
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Zhang X, Qin H, Zhang Y, Niu J, Wang Y, Shi L. Driving factors of community-level leaf stoichiometry patterns in a typical temperate mountain meadow ecosystem of northern China. FRONTIERS IN PLANT SCIENCE 2023; 14:1141765. [PMID: 37600167 PMCID: PMC10435321 DOI: 10.3389/fpls.2023.1141765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 07/06/2023] [Indexed: 08/22/2023]
Abstract
In ecological stoichiometry, the stoichiometry and spatial distribution of leaf carbon, nitrogen, and phosphorus are important research topics. Various studies have assessed leaf stoichiometry and its relationships with environmental factors at different scales. However, how the leaf carbon, nitrogen and phosphorus stoichiometric characteristics of the same vegetation type at the community level vary with environmental factors along a continuous altitudinal gradient remains poorly understood. In this paper, 13 sampling sites along an altitudinal gradient of 1,800-3,011 m in a typical temperate mountain meadow ecosystem on the southern slope of the Wutai Mountain in North China were sampled to explore the response of leaf carbon, nitrogen and phosphorus stoichiometric characteristics to altitude change using correlation analysis, and then quantified the contribution of driving factors using canonical correspondence analysis (CCA) and variation partitioning. We found that the community-level leaf stoichiometry of mountain meadows differed significantly at different altitudes, and an increase in altitude significantly decreased community-level leaf total nitrogen (LTN) and leaf total phosphorus (LTP); however, the leaf total carbon (LTC), C∶N, C∶P, and N∶P increased with an increase in altitude. Additionally, with increasing altitude, soil properties showed significant trends. Soil organic carbon (SOC), soil total nitrogen (STN), soil total phosphorus (STP), soil water content and soil electrical conductivity increased significantly, but soil temperature, soil bulk density and soil pH exhibited the opposite trend. Our results suggested that altitude, soil electrical conductivity and soil bulk density significantly influenced the changes in the leaf stoichiometric characteristics, explaining 75.5% of the total variation, and altitude had the greatest influence (36.6%). In the temperate mountains, altitude played a decisive role in affecting patterns of meadow plant nutrients and stoichiometry and was more important than soil in explaining leaf C∶N∶P stoichiometry variations. Our findings provide important references to understand the responses of plant stoichiometry to altitudinal gradients.
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Affiliation(s)
- Xiaolong Zhang
- School of Resources and Environment, Shanxi University of Finance and Economics, Taiyuan, China
| | - Hao Qin
- School of Statistics, Shanxi University of Finance and Economics, Taiyuan, China
| | - Yinbo Zhang
- School of Resources and Environment, Shanxi University of Finance and Economics, Taiyuan, China
| | - Junjie Niu
- Research Center for Science Development in Fenhe River Valley, Taiyuan Normal University, Taiyuan, China
| | - Yongji Wang
- School of Life Science, Shanxi Normal University, Taiyuan, China
| | - Lijiang Shi
- School of Resources and Environment, Shanxi University of Finance and Economics, Taiyuan, China
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López-Calvillo LF, Carbó-Ramírez P, Rodríguez-Ramírez EC. Small-fragment, high turnover: soil microenvironment fluctuation effect on tree diversity in a Neotropical montane oak forest. PeerJ 2023; 11:e15415. [PMID: 37250721 PMCID: PMC10215762 DOI: 10.7717/peerj.15415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 04/24/2023] [Indexed: 05/31/2023] Open
Abstract
Background Soil microenvironmental variables showed an important key in α and β-tree diversity in Neotropical montane oak forest. Thus, understanding the microenvironment fluctuation at small-fragment effects on tree diversity is crucial in maintaining the montane oak ecosystems. In this study, we hypothesized that within a relatively small-fragment (151.63 ha), tree α and β-diversity fluctuate and specific soil microenvironmental factors could influence tree species diversity to answer three questions: Do tree α and β-diversity differ among transects, even in a short-distance between them? Do microenvironmental variables influence tree diversity composition that occurs within a relict Neotropical montane oak forest? Is there a particular microenvironmental variable influencing tree species-specific? Methods We established four permanent transects during a year in a relict Neotropical montane oak forest, we assessed tree diversity and specific microenvironmental variables (soil moisture, soil temperature, pH, depth litterfall and light incidence). This allowed us to evaluate how microenvironmental variables at small-fragment influence α and β-tree diversity and tree species-specific. Results Our results showed that α-diversity was not different among transects; however, β-diversity of tree species was mostly explained by turnover and soil moisture, soil temperature, and light incidence were the microenvironmental variables that triggered the replacement (i.e., one species by another). Those variables also had effect on tree species-specific: Mexican beech (Fagus mexicana), Quebracho (Quercus delgadoana), Pezma (Cyathea fulva), Aguacatillo (Beilschmiedia mexicana), Pezma (Dicksonia sellowiana var. arachneosa), and Mountain magnolia (Magnolia schiedeana). Discussion Our results confirm our hypothesis related to β-diversity but not with α-diversity; however, the tree community structure of the diversity was similar among transects. Our study represents the first effort to evaluate and link the soil microenvironmental effect on tree α and β-diversity, finding a high replacement in a small-fragment of Neotropical montane oak forest from eastern Mexico.
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Affiliation(s)
- Luis F. López-Calvillo
- Laboratorio de Biogeografía y Sistemática, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City, CDMX, Mexico
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Fisher JB, Dohlen MB, Halverson GH, Collison JW, Pearson C, Huntington JL. Remotely sensed terrestrial open water evaporation. Sci Rep 2023; 13:8174. [PMID: 37210390 PMCID: PMC10199918 DOI: 10.1038/s41598-023-34921-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 05/10/2023] [Indexed: 05/22/2023] Open
Abstract
Terrestrial open water evaporation is difficult to measure both in situ and remotely yet is critical for understanding changes in reservoirs, lakes, and inland seas from human management and climatically altered hydrological cycling. Multiple satellite missions and data systems (e.g., ECOSTRESS, OpenET) now operationally produce evapotranspiration (ET), but the open water evaporation data produced over millions of water bodies are algorithmically produced differently than the main ET data and are often overlooked in evaluation. Here, we evaluated the open water evaporation algorithm, AquaSEBS, used by ECOSTRESS and OpenET against 19 in situ open water evaporation sites from around the world using MODIS and Landsat data, making this one of the largest open water evaporation validations to date. Overall, our remotely sensed open water evaporation retrieval captured some variability and magnitude in the in situ data when controlling for high wind events (instantaneous: r2 = 0.71; bias = 13% of mean; RMSE = 38% of mean). Much of the instantaneous uncertainty was due to high wind events (u > mean daily 7.5 m·s-1) when the open water evaporation process shifts from radiatively-controlled to atmospherically-controlled; not accounting for high wind events decreases instantaneous accuracy significantly (r2 = 0.47; bias = 36% of mean; RMSE = 62% of mean). However, this sensitivity minimizes with temporal integration (e.g., daily RMSE = 1.2-1.5 mm·day-1). To benchmark AquaSEBS, we ran a suite of 11 machine learning models, but found that they did not significantly improve on the process-based formulation of AquaSEBS suggesting that the remaining error is from a combination of the in situ evaporation measurements, forcing data, and/or scaling mismatch; the machine learning models were able to predict error well in and of itself (r2 = 0.74). Our results provide confidence in the remotely sensed open water evaporation data, though not without uncertainty, and a foundation by which current and future missions may build such operational data.
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Affiliation(s)
- Joshua B Fisher
- Schmid College of Science and Technology, Chapman University, 1 University Drive, Orange, CA, 92866, USA.
- Joint Institute for Regional Earth System Science and Engineering, University of California, Los Angeles, 607 Charles E Young Drive East, Los Angeles, CA, 90095, USA.
| | - Matthew B Dohlen
- Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA, 91109, USA
| | - Gregory H Halverson
- Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA, 91109, USA
| | - Jacob W Collison
- Department of Civil Engineering, University of New Mexico, 1 University of New Mexico, Albuquerque, NM, 87131, USA
| | - Christopher Pearson
- Division of Hydrologic Sciences, Desert Research Institute, 2215 Raggio Parkway, Reno, NV, 89512, USA
| | - Justin L Huntington
- Division of Hydrologic Sciences, Desert Research Institute, 2215 Raggio Parkway, Reno, NV, 89512, USA
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Bristol D, Hassan K, Blankinship JC, Nielsen UN. Responses of nematode abundances to increased and reduced rainfall under field conditions: A meta‐analysis. Ecosphere 2023. [DOI: 10.1002/ecs2.4364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Affiliation(s)
- Dylan Bristol
- Hawkesbury Institute for the Environment Western Sydney University Penrith New South Wales Australia
| | - Kamrul Hassan
- Hawkesbury Institute for the Environment Western Sydney University Penrith New South Wales Australia
- Department of Entomology Sylhet Agricultural University Sylhet Bangladesh
| | | | - Uffe N. Nielsen
- Hawkesbury Institute for the Environment Western Sydney University Penrith New South Wales Australia
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Guo Y, Ji L, Wang M, Shan C, Shen F, Yang Y, He G, Purahong W, Yang L. View from the Top: Insights into the Diversity and Community Assembly of Ectomycorrhizal and Saprotrophic Fungi along an Altitudinal Gradient in Chinese Boreal Larix gmelinii-Dominated Forests. Microorganisms 2022; 10:microorganisms10101997. [PMID: 36296273 PMCID: PMC9607379 DOI: 10.3390/microorganisms10101997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 09/30/2022] [Accepted: 10/07/2022] [Indexed: 11/24/2022] Open
Abstract
The altitudinal patterns of soil fungi have attracted considerable attention; however, few studies have investigated the diversity and community assembly of fungal functional guilds along an altitudinal gradient. Here, we explored ectomycorrhizal (EcM) and saprotrophic (SAP) fungal diversity and community assembly along a 470 m vertical gradient (ranging from 830 to 1300 m) on Oakley Mountain, sampling bulk soils in the 0–10 cm and 10–20 cm soil layers of Larix gmelinii-dominated forests. Illumina MiSeq sequencing of the ITS genes was employed to explore the fungal community composition and diversity. The relative abundance of EcM and SAP fungi showed a divergent pattern along an altitudinal gradient, while we observed a consistent altitudinal tendency for EcM and SAP fungal diversity and community assembly. The diversity of both fungal guilds increased with increasing altitude. Altitude and soil moisture were the key factors affecting the community composition of both fungal guilds. In addition, the plant community composition significantly affected the EcM fungal community composition, whereas the dissolved organic nitrogen and ammonium nitrogen contents were the driving factors of SAP fungal community. Despite the effects of vegetation and soil factors, EcM and SAP fungal communities were mainly governed by stochastic processes (especially drift) at different altitudes and soil depths. These results shed new light on the ecology of different fungal functional guilds along an altitudinal gradient, which will provide a deeper understanding of the biogeography of soil fungi.
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Affiliation(s)
- Yi Guo
- School of Forestry, Central South University of Forestry and Technology, Changsha 410004, China
| | - Li Ji
- School of Forestry, Central South University of Forestry and Technology, Changsha 410004, China
- Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, China
- Department of Soil Ecology, UFZ-Helmholtz Centre for Environmental Research, 06120 Halle (Saale), Germany
| | - Mingwei Wang
- Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Chengfeng Shan
- Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Fangyuan Shen
- Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Yuchun Yang
- Jilin Academy of Forestry, Changchun 130033, China
| | - Gongxiu He
- School of Forestry, Central South University of Forestry and Technology, Changsha 410004, China
- Correspondence: (G.H.); (L.Y.); Tel.: +86-137-9661-1896 (L.Y.)
| | - Witoon Purahong
- Department of Soil Ecology, UFZ-Helmholtz Centre for Environmental Research, 06120 Halle (Saale), Germany
| | - Lixue Yang
- Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, China
- Correspondence: (G.H.); (L.Y.); Tel.: +86-137-9661-1896 (L.Y.)
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Qin H, Jiao L, Zhou Y, Wu J, Che X. Elevation affects the ecological stoichiometry of Qinghai spruce in the Qilian Mountains of northwest China. FRONTIERS IN PLANT SCIENCE 2022; 13:917755. [PMID: 36186057 PMCID: PMC9515584 DOI: 10.3389/fpls.2022.917755] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 08/15/2022] [Indexed: 06/16/2023]
Abstract
Environmental heterogeneity in temperature, moisture, and soil fertility caused by elevation gradients can affect the trade-offs in the survival strategies of tree species. There is uncertainty about the allocation of resources to different tissues of trees in response to the elevation gradient with respect to carbon (C), nitrogen (N), and phosphorus (P). Here, the C, N, and P content of leaves, branches, trunks, and thick and fine roots of Picea crassifolia (Qinghai spruce) and their stoichiometric changes across three different elevations were investigated in the Qilian Mountains. We found that N:P of Qinghai spruce was <14 in all tissues at most elevations, indicating that Qinghai spruce was more susceptible to N limitation. Meanwhile, the N content and N:P of Qinghai spruce each were significantly negatively correlated with temperature (p < 0.05), and its P content was lower at high elevation. The contribution of soil-climate interactions on the elevation gradient to each tissue type was 34.02% (leaves), 16.84% (branches), 67.78% (trunks), 34.74% (thick roots), and 49.84% (fine roots), indicating that interacting climate and soil factors on the elevation gradient predominately drove the C, N, and P content and stoichiometry variation in each tissue type of Qinghai spruce trees. The results of this study clarify that the elevation gradient regulates the elemental content and resource allocation in Qinghai spruce, providing basic data and an important timely reference for future forest management in the regions where coniferous trees grows. These findings also help improve our understanding of elevational patterns of forest ecosystem stoichiometry in arid and semiarid regions.
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Affiliation(s)
- Huijun Qin
- College of Geography and Environment Science, Northwest Normal University, Lanzhou, China
- Key Laboratory of Resource Environment and Sustainable Development of Oasis, Gansu Province, Lanzhou, China
| | - Liang Jiao
- College of Geography and Environment Science, Northwest Normal University, Lanzhou, China
- Key Laboratory of Resource Environment and Sustainable Development of Oasis, Gansu Province, Lanzhou, China
| | - Yi Zhou
- College of Geography and Environment Science, Northwest Normal University, Lanzhou, China
- Key Laboratory of Resource Environment and Sustainable Development of Oasis, Gansu Province, Lanzhou, China
| | - Jingjing Wu
- College of Geography and Environment Science, Northwest Normal University, Lanzhou, China
- Key Laboratory of Resource Environment and Sustainable Development of Oasis, Gansu Province, Lanzhou, China
| | - Xichen Che
- College of Geography and Environment Science, Northwest Normal University, Lanzhou, China
- Key Laboratory of Resource Environment and Sustainable Development of Oasis, Gansu Province, Lanzhou, China
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Smith SW, Rahman NEB, Harrison ME, Shiodera S, Giesen W, Lampela M, Wardle DA, Chong KY, Agusti R, Wijedasa LS, Teo PY, Fatimah YA, Teng NT, Yeo JKQ, Alam MJ, Brugues Sintes P, Darusman T, Graham LLB, Katoppo DR, Kojima K, Kusin K, Lestari DP, Metali F, Morrogh‐Bernard HC, Nahor MB, Napitupulu RRP, Nasir D, Nath TK, Nilus R, Norisada M, Rachmanadi D, Rachmat HH, Ripoll Capilla B, Salahuddin, Santosa PB, Sukri RS, Tay B, Tuah W, Wedeux BMM, Yamanoshita T, Yokoyama EY, Yuwati TW, Lee JSH. Tree species that ‘live slow, die older’ enhance tropical peat swamp restoration: evidence from a systematic review. J Appl Ecol 2022. [DOI: 10.1111/1365-2664.14232] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Stuart W. Smith
- Asian School of Environment Nanyang Technological University Singapore
- Department of Physical Geography Stockholm University Sweden
| | | | - Mark E. Harrison
- Centre for Ecology and Conservation, College of Life and Environmental Sciences University of Exeter UK
- School of Geography, Geology and the Environment University of Leicester UK
| | - Satomi Shiodera
- Department of Global Liberal Studies, Faculty of Global Liberal Studies Nanzan University Japan
- Centre for Southeast Asian Studies Kyoto University Japan
- Research Institute for Humanity and Nature Japan
| | - Wim Giesen
- Euroconsult Mott MacDonald the Netherlands
- Naturalis Biodiversity Centre the Netherlands
| | - Maija Lampela
- Environmental Research Institute National University of Singapore Singapore
- Department of Forest Sciences University of Helsinki Finland
| | - David A. Wardle
- Asian School of Environment Nanyang Technological University Singapore
| | - Kwek Yan Chong
- Singapore Botanic Gardens, National Parks Board Singapore
- Department of Biological Sciences National University of Singapore Singapore
| | - Randi Agusti
- Environmental Research Institute National University of Singapore Singapore
- Natural Kapital Indonesia Pontianak Indonesia
| | - Lahiru S. Wijedasa
- Environmental Research Institute National University of Singapore Singapore
- BirdLife International Cambridge UK
- ConservationLinks Pvt Ltd Singapore
| | - Pei Yun Teo
- Asian School of Environment Nanyang Technological University Singapore
- Future Cities Lab Global Singapore‐ETH Centre Singapore
| | - Yuti A. Fatimah
- Asian School of Environment Nanyang Technological University Singapore
| | | | - Joanne K. Q. Yeo
- Asian School of Environment Nanyang Technological University Singapore
| | - M. Jahangir Alam
- School of Environmental and Geographical Sciences University of Nottingham Malaysia Malaysia
| | | | | | - Laura L. B. Graham
- Borneo Orangutan Survival Foundation Indonesia
- Tropical Forests and People Research Centre University of the Sunshine Coast Australia
| | | | - Katsumi Kojima
- Asian Research Center for Bioresource and Environmental Sciences, Graduate School of Agricultural and Life Sciences The University of Tokyo Japan
| | - Kitso Kusin
- Centre for the International Cooperation in Sustainable Management of Tropical Peatlands University of Palangka Raya Indonesia
| | | | - Faizah Metali
- Faculty of Science, Universiti Brunei Darussalam Brunei Darussalam
| | - Helen C. Morrogh‐Bernard
- Centre for Ecology and Conservation, College of Life and Environmental Sciences University of Exeter UK
| | | | | | - Darmae Nasir
- Centre for the International Cooperation in Sustainable Management of Tropical Peatlands University of Palangka Raya Indonesia
| | - Tapan Kumar Nath
- School of Environmental and Geographical Sciences University of Nottingham Malaysia Malaysia
| | | | - Mariko Norisada
- Asian Research Center for Bioresource and Environmental Sciences, Graduate School of Agricultural and Life Sciences The University of Tokyo Japan
| | - Dony Rachmanadi
- Research Center of Ecology and Ethnobiology, National Research and Innovation Agency (BRIN) Indonesia
| | - Henti H. Rachmat
- Research Center of Ecology and Ethnobiology, National Research and Innovation Agency (BRIN) Indonesia
| | | | - Salahuddin
- Yayasan Borneo Nature Indonesia, Palangka Raya, Central Kalimantan Indonesia
- Centre for the International Cooperation in Sustainable Management of Tropical Peatlands University of Palangka Raya Indonesia
| | - Purwanto B. Santosa
- Research Center of Plant Conservation, Botanical Garden and Forestry, National Research and Innovation Agency (BRIN) Indonesia
| | - Rahayu S. Sukri
- Institute for Biodiversity and Environmental Research Universiti Brunei Darussalam Brunei Darussalam
| | | | - Wardah Tuah
- Institute for Biodiversity and Environmental Research Universiti Brunei Darussalam Brunei Darussalam
| | - Béatrice M. M. Wedeux
- Department of Plant Sciences University of Cambridge Conservation Research Institute Cambridge UK
| | - Takashi Yamanoshita
- Asian Research Center for Bioresource and Environmental Sciences, Graduate School of Agricultural and Life Sciences The University of Tokyo Japan
| | | | - Tri Wira Yuwati
- Research Center of Ecology and Ethnobiology, National Research and Innovation Agency (BRIN) Indonesia
| | - Janice S. H. Lee
- Asian School of Environment Nanyang Technological University Singapore
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Bürli S, Pannell JR, Tonnabel J. Environmental variation in sex ratios and sexual dimorphism in three wind‐pollinated dioecious plant species. OIKOS 2022. [DOI: 10.1111/oik.08651] [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)
- Sarah Bürli
- Dept of Ecology and Evolution, Le Biophore, UNIL‐SORGE, Univ. of Lausanne Lausanne Switzerland
- Botanical Garden&Inst. of Plant Sciences of the Univ. of Bern Bern Switzerland
| | - John R. Pannell
- Dept of Ecology and Evolution, Le Biophore, UNIL‐SORGE, Univ. of Lausanne Lausanne Switzerland
| | - Jeanne Tonnabel
- Dept of Ecology and Evolution, Le Biophore, UNIL‐SORGE, Univ. of Lausanne Lausanne Switzerland
- CEFE, Univ. Montpellier, CNRS, Univ. Paul Valéry Montpellier 3, EPHE, IRD Montpellier France
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11
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Hong DS, Gonzales KE, Fahey TJ, Yanai RD. Foliar nutrient concentrations of six northern hardwood species responded to nitrogen and phosphorus fertilization but did not predict tree growth. PeerJ 2022; 10:e13193. [PMID: 35474687 PMCID: PMC9035280 DOI: 10.7717/peerj.13193] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 03/09/2022] [Indexed: 01/12/2023] Open
Abstract
Foliar chemistry can be useful for diagnosing soil nutrient availability and plant nutrient limitation. In northern hardwood forests, foliar responses to nitrogen (N) addition have been more often studied than phosphorus (P) addition, and the interactive effects of N and P addition have rarely been described. In the White Mountains of central New Hampshire, plots in ten forest stands of three age classes across three sites were treated annually beginning in 2011 with 30 kg N ha-1 y-1 or 10 kg P ha-1 y-1 or both or neither-a full factorial design. Green leaves of American beech (Fagus grandifolia Ehrh.), pin cherry (Prunus pensylvanica L.f.), red maple (Acer rubrum L.), sugar maple (A. saccharum Marsh.), white birch (Betula papyrifera Marsh.), and yellow birch (B. alleghaniensis Britton) were sampled pre-treatment and 4-6 years post-treatment in two young stands (last cut between 1988-1990), four mid-aged stands (last cut between 1971-1985) and four mature stands (last cut between 1883-1910). In a factorial analysis of species, stand age class, and nutrient addition, foliar N was 12% higher with N addition (p < 0.001) and foliar P was 45% higher with P addition (p < 0.001). Notably, P addition reduced foliar N concentration by 3% (p = 0.05), and N addition reduced foliar P concentration by 7% (p = 0.002). When both nutrients were added together, foliar P was lower than predicted by the main effects of N and P additions (p = 0.08 for N × P interaction), presumably because addition of N allowed greater use of P for growth. Foliar nutrients did not differ consistently with stand age class (p ≥ 0.11), but tree species differed (p ≤ 0.01), with the pioneer species pin cherry having the highest foliar nutrient concentrations and the greatest responses to nutrient addition. Foliar calcium (Ca) and magnesium (Mg) concentrations, on average, were 10% (p < 0.001) and 5% lower (p = 0.01), respectively, with N addition, but were not affected by P addition (p = 0.35 for Ca and p = 0.93 for Mg). Additions of N and P did not affect foliar potassium (K) concentrations (p = 0.58 for N addition and p = 0.88 for P addition). Pre-treatment foliar N:P ratios were high enough to suggest P limitation, but trees receiving N (p = 0.01), not P (p = 0.64), had higher radial growth rates from 2011 to 2015. The growth response of trees to N or P addition was not explained by pre-treatment foliar N, P, N:P, Ca, Mg, or K.
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Affiliation(s)
- Daniel S. Hong
- State University of New York College of Environmental Science and Forestry, Syracuse, NY, United States of America
| | - Kara E. Gonzales
- California Department of Fish and Wildlife, Sacramento, CA, United States of America
| | | | - Ruth D. Yanai
- State University of New York College of Environmental Science and Forestry, Syracuse, NY, United States of America
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12
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Manu R, Corre MD, Aleeje A, Mwanjalolo MJG, Babweteera F, Veldkamp E, van Straaten O. Responses of tree growth and biomass production to nutrient addition in a semi-deciduous tropical forest in Africa. Ecology 2022; 103:e3659. [PMID: 35129838 DOI: 10.1002/ecy.3659] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 09/24/2021] [Accepted: 10/25/2021] [Indexed: 11/11/2022]
Abstract
Experimental evidence of nutrient limitations on primary productivity in Afrotropical forests is rare and globally underrepresented, yet are crucial for understanding constraints to terrestrial carbon uptake. In an ecosystem-scale nutrient manipulation experiment, we assessed the early responses of tree growth rates among different tree sizes, taxonomic species and at a community level in a humid tropical forest in Uganda. Following a full factorial design, we established 32 (eight treatments × four replicates) experimental plots of 40 m × 40 m each. We added nitrogen (N), phosphorus (P), potassium (K), their combinations (NP, NK, PK, and NPK) and control at the rates of 125 kg N.ha-1 .yr-1 , 50 kg P.ha-1 .yr-1 and 50 kg K.ha-1 .yr-1 , split into four equal applications, and measured stem growth of more than 15,000 trees with diameter at breast height (DBH) ≥ 1 cm. After two years, the response of tree stem growth to nutrient additions was dependent on tree sizes, species and leaf habit but not community-wide. First, tree stem growth increased under N additions, primarily among medium-sized trees (10-30 cm DBH), and in trees of Lasiodiscus mildbraedii in the second year of the experiment. Second, K limitation was evident in semi-deciduous trees, which increased stem growth by 46% in +K than -K treatments, following a strong, prolonged dry season during the first year of the experiment. This highlights the key role of K in stomatal regulation and maintenance of water balance in trees, particularly under water-stressed conditions. Third, the role of P in promoting tree growth and carbon accumulation rates in this forest on highly weathered soils was rather not pronounced; nonetheless, mortality among saplings (1-5 cm DBH) was reduced by 30% in +P than in -P treatments. Although stem growth responses to nutrient interaction effects were positive or negative (likely depending on nutrient combinations and climate variability), our results underscore the fact that, in a highly diverse forest ecosystem, multiple nutrients and not one single nutrient regulate tree growth and aboveground carbon uptake due to varying nutrient requirements and acquisition strategies of different tree sizes, species and leaf habits.
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Affiliation(s)
- Raphael Manu
- Department of Soil Science of Tropical and Subtropical Ecosystems, Georg-August University of Goettingen, Buesgenweg 2, 37077, Goettingen, Germany
| | - Marife D Corre
- Department of Soil Science of Tropical and Subtropical Ecosystems, Georg-August University of Goettingen, Buesgenweg 2, 37077, Goettingen, Germany
| | - Alfred Aleeje
- Department of Agricultural Production, Makerere University, P.O. Box 7062, Kampala, Uganda
| | - Majaliwa J G Mwanjalolo
- Department of Geography, Geo-informatics and Climate Sciences, Makerere University, P.O. Box 7062, Kampala, Uganda.,Regional FORUM for capacity building in Agriculture-RUFORUM, Kampala, Uganda
| | - Fred Babweteera
- Department of Forestry, Biodiversity and Tourism, Makerere University, P.O. Box 7062, Kampala, Uganda.,Budongo Conservation Field Station, P.O. Box 362, Masindi, Uganda
| | - Edzo Veldkamp
- Department of Soil Science of Tropical and Subtropical Ecosystems, Georg-August University of Goettingen, Buesgenweg 2, 37077, Goettingen, Germany
| | - Oliver van Straaten
- Department of Soil Science of Tropical and Subtropical Ecosystems, Georg-August University of Goettingen, Buesgenweg 2, 37077, Goettingen, Germany.,Johann Heinrich von Thuenen Institute, Institute for Forest Ecosystems, Alfred-Möller-Straße 1, Eberswalde, Germany
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13
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Schulte‐Uebbing LF, Ros GH, de Vries W. Experimental evidence shows minor contribution of nitrogen deposition to global forest carbon sequestration. GLOBAL CHANGE BIOLOGY 2022; 28:899-917. [PMID: 34699094 PMCID: PMC9299138 DOI: 10.1111/gcb.15960] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 09/09/2021] [Indexed: 05/12/2023]
Abstract
Human activities have drastically increased nitrogen (N) deposition onto forests globally. This may have alleviated N limitation and thus stimulated productivity and carbon (C) sequestration in aboveground woody biomass (AGWB), a stable C pool with long turnover times. This 'carbon bonus' of human N use partly offsets the climate impact of human-induced N2 O emissions, but its magnitude and spatial variation are uncertain. Here we used a meta-regression approach to identify sources of heterogeneity in tree biomass C-N response (additional C stored per unit of N) based on data from fertilization experiments in global forests. We identified important drivers of spatial variation in forest biomass C-N response related to climate (potential evapotranspiration), soil fertility (N content) and tree characteristics (stand age), and used these relationships to quantify global spatial variation in N-induced forest biomass C sequestration. Results show that N deposition enhances biomass C sequestration in only one-third of global forests, mainly in the boreal region, while N reduces C sequestration in 5% of forests, mainly in the tropics. In the remaining 59% of global forests, N addition has no impact on biomass C sequestration. Average C-N responses were 11 (4-21) kg C per kg N for boreal forests, 4 (0-8) kg C per kg N for temperate forests and 0 (-4 to 5) kg C per kg N for tropical forests. Our global estimate of the N-induced forest biomass C sink of 41 (-53 to 159) Tg C yr-1 is substantially lower than previous estimates, mainly due to the absence of any response in most tropical forests (accounting for 58% of the global forest area). Overall, the N-induced C sink in AGWB only offsets ~5% of the climate impact of N2 O emissions (in terms of 100-year global warming potential), and contributes ~1% to the gross forest C sink.
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Affiliation(s)
- Lena F. Schulte‐Uebbing
- Environmental Systems Analysis GroupWageningen University & ResearchWageningenthe Netherlands
| | - Gerard H. Ros
- Environmental Systems Analysis GroupWageningen University & ResearchWageningenthe Netherlands
- Nutrient Management InstituteWageningenthe Netherlands
| | - Wim de Vries
- Environmental Systems Analysis GroupWageningen University & ResearchWageningenthe Netherlands
- Wageningen Environmental ResearchWageningen University & ResearchWageningenthe Netherlands
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14
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Zhang B, Zhang J, Hastings A, Fu Z, Yuan Y, Zhai L. Contrasting plant responses to multivariate environmental variations among species with divergent elevation shifts. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2022; 32:e02488. [PMID: 34679234 PMCID: PMC9285362 DOI: 10.1002/eap.2488] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 02/17/2021] [Accepted: 05/17/2021] [Indexed: 06/13/2023]
Abstract
The general predictions of climate impacts on species shifts (e.g., upward shift) cannot directly inform local species conservation, because local-scale studies find divergent patterns instead of a general one. For example, our previous study found three shift patterns with elevation (strong down-, moderate down-, and up-slope shifts) in temperate mountain forests. The divergent shifts are hypothesized to arise from both multivariate environmental variations with elevation and corresponding species-specific responses. To test this hypothesis, we sampled soils and leaves to measure elevation variations in soil conditions and determined plant responses using discriminations against heavier isotopes, carbon (13 C) and nitrogen (15 N). Functional traits of the species studied were also extracted from a public trait dataset. We found that: (1) With low soil water contents at low elevations, only the leaves of up-shifters had lower 13 C discriminations at low vs. high elevations; (2) With low soil P contents at high elevations, only the leaves of moderate down-shifters had higher 15 N discriminations at high vs. low elevations; (3) The leaves of strong down-shifters did not show significant elevation patterns of the discriminations; (4) The contrasting responses among the three types of shifters agree with their functional dissimilarity, suggested by their separate locations in a multitrait space. Taken together, the divergent shifts are associated with the elevation variations in environmental conditions and contrasting plant responses. The contrasting responses could result from the functional dissimilarity among species. Therefore, a detailed understanding of both local environmental variations and species-specific responses can facilitate accurate predictions of species shifts to inform local species conservation.
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Affiliation(s)
- Bo Zhang
- Department of Natural Resource Ecology and ManagementOklahoma State UniversityStillwaterOklahoma74078USA
- Department of Integrative BiologyOklahoma State UniversityStillwaterOklahoma74078USA
| | - Jinchi Zhang
- Co‐Innovation Center for Sustainable Forestry in Southern ChinaJiangsu Province Key Laboratory of Soil and Water Conservation and Ecological RestorationNanjing Forestry UniversityNanjingJiangsu210037China
| | - Alan Hastings
- Department of Environmental Science and PolicyUniversity of CaliforniaDavisCalifornia95616USA
- Santa Fe InstituteSanta FeNew Mexico87501USA
| | - Zhiyuan Fu
- Co‐Innovation Center for Sustainable Forestry in Southern ChinaJiangsu Province Key Laboratory of Soil and Water Conservation and Ecological RestorationNanjing Forestry UniversityNanjingJiangsu210037China
| | - Yingdan Yuan
- Co‐Innovation Center for Sustainable Forestry in Southern ChinaJiangsu Province Key Laboratory of Soil and Water Conservation and Ecological RestorationNanjing Forestry UniversityNanjingJiangsu210037China
- Jiangsu Key Laboratory of Crop Genetics and PhysiologyCollege of Horticulture and Plant ProtectionYangzhou UniversityNo. 88, Daxue South RoadYangzhouJiangsu225127China
| | - Lu Zhai
- Department of Natural Resource Ecology and ManagementOklahoma State UniversityStillwaterOklahoma74078USA
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15
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Fan LL, Mekrovar O, Li YM, Li KH, Ma XX, Mao JF. Effect of Nutrient Addition on the Productivity and Species Richness of Grassland Along With an Elevational Gradient in Tajikistan. FRONTIERS IN PLANT SCIENCE 2021; 12:765077. [PMID: 34956262 PMCID: PMC8708349 DOI: 10.3389/fpls.2021.765077] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 11/11/2021] [Indexed: 06/14/2023]
Abstract
Grasslands provide key resource for the millions of people who are dependent on livestock in Tajikistan. Productivity and species richness (SR) are important characteristics of grassland ecosystems and are greatly affected by nutrient inputs. The effect that climate change might have on these characteristics remains unclear. Here, an in situ nitrogen (N) and phosphorus (P) fertilization experiment was conducted at four sites along with an elevational gradient (650, 1,100, 1,250, and 2,000 m) in western Tajikistan over 2 years (2018 and 2019) to examine the influences of nutrient availability and climate change on aboveground biomass (AGB) and SR; precipitation and temperature were also considered to analyze the responses. It demonstrated that enrichment with N, P, and their combinations significantly increased AGB along with an elevational gradient (p < 0.05). AGB increased as the concentrations of nutrients added increased. The maximum AGB, which was 2-fold higher compared with control, was observed when 90 kg N ha-1year-1 and 30 kg P ha-1year-1 were added. In addition, nitrogen addition alone stimulated greater AGB than P addition, although no significant difference was observed between these two treatments. Enrichment with N, P, and their combination had no significant effect on SR; however, SR significantly changed at different elevation. Elevation had direct effect on precipitation and temperature, which, in turn, resulted in variation in AGB and SR. Moreover, both nutrient and elevation had significant effect on AGB and SR, but there was no interaction effect of them. AGB and SR interacted with significant negative correlation. In the high-elevation area, plants grew better in the warmer year (2018); this indicates that grasslands in high mountain areas in Tajikistan might have higher productivity as the climate warms, which will positively affect the economic development of the country.
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Affiliation(s)
- Lian-Lian Fan
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
- Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Okhonniyozov Mekrovar
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
- Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yao-Ming Li
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
- Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Kai-Hui Li
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
- Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xue-Xi Ma
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
- Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi, China
| | - Jie-Fei Mao
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
- Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi, China
- University of Chinese Academy of Sciences, Beijing, China
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16
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Prada CM, Turner BL, Dalling JW. Growth responses of ectomycorrhizal and arbuscular mycorrhizal seedlings to low soil nitrogen availability in a tropical montane forest. Funct Ecol 2021. [DOI: 10.1111/1365-2435.13901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Cecilia M. Prada
- Department of Plant Biology University of Illinois Urbana Illinois USA
| | - Benjamin L. Turner
- Soil and Water Science Department University of Florida Gainesville Florida USA
| | - James W. Dalling
- Department of Plant Biology University of Illinois Urbana Illinois USA
- Smithsonian Tropical Research Institute Balboa Republic of Panama
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17
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Dantas de Paula M, Forrest M, Langan L, Bendix J, Homeier J, Velescu A, Wilcke W, Hickler T. Nutrient cycling drives plant community trait assembly and ecosystem functioning in a tropical mountain biodiversity hotspot. THE NEW PHYTOLOGIST 2021; 232:551-566. [PMID: 34228829 DOI: 10.1111/nph.17600] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 06/28/2021] [Indexed: 06/13/2023]
Abstract
Community trait assembly in highly diverse tropical rainforests is still poorly understood. Based on more than a decade of field measurements in a biodiversity hotspot of southern Ecuador, we implemented plant trait variation and improved soil organic matter dynamics in a widely used dynamic vegetation model (the Lund-Potsdam-Jena General Ecosystem Simulator, LPJ-GUESS) to explore the main drivers of community assembly along an elevational gradient. In the model used here (LPJ-GUESS-NTD, where NTD stands for nutrient-trait dynamics), each plant individual can possess different trait combinations, and the community trait composition emerges via ecological sorting. Further model developments include plant growth limitation by phosphorous (P) and mycorrhizal nutrient uptake. The new model version reproduced the main observed community trait shift and related vegetation processes along the elevational gradient, but only if nutrient limitations to plant growth were activated. In turn, when traits were fixed, low productivity communities emerged due to reduced nutrient-use efficiency. Mycorrhizal nutrient uptake, when deactivated, reduced net primary production (NPP) by 61-72% along the gradient. Our results strongly suggest that the elevational temperature gradient drives community assembly and ecosystem functioning indirectly through its effect on soil nutrient dynamics and vegetation traits. This illustrates the importance of considering these processes to yield realistic model predictions.
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Affiliation(s)
- Mateus Dantas de Paula
- Senckenberg Biodiversity and Climate Research Centre (SBiK-F), Frankfurt am Main, 60325, Germany
| | - Matthew Forrest
- Senckenberg Biodiversity and Climate Research Centre (SBiK-F), Frankfurt am Main, 60325, Germany
| | - Liam Langan
- Senckenberg Biodiversity and Climate Research Centre (SBiK-F), Frankfurt am Main, 60325, Germany
| | - Jörg Bendix
- Department of Geography, University of Marburg, Marburg, 35037, Germany
| | - Jürgen Homeier
- Plant Ecology and Ecosystems Research, University of Goettingen, Untere Karspüle 2, Goettingen, 37073, Germany
- Centre for Biodiversity and Sustainable Land Use (CBL), University of Goettingen, Goettingen, 37073, Germany
| | - Andre Velescu
- Institute of Geography and Geoecology, Karlsruhe Institute of Technology (KIT), Reinhard-Baumeister-Platz 1, Karlsruhe, 76131, Germany
| | - Wolfgang Wilcke
- Institute of Geography and Geoecology, Karlsruhe Institute of Technology (KIT), Reinhard-Baumeister-Platz 1, Karlsruhe, 76131, Germany
| | - Thomas Hickler
- Senckenberg Biodiversity and Climate Research Centre (SBiK-F), Frankfurt am Main, 60325, Germany
- Department of Physical Geography, Geosciences, Johann Wolfgang Goethe University of Frankfurt, Frankfurt, 60438, Germany
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18
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Impacts of slope aspects on altitudinal species richness and species composition of Narapani-Masina landscape, Arghakhanchi, West Nepal. JOURNAL OF ASIA-PACIFIC BIODIVERSITY 2021. [DOI: 10.1016/j.japb.2021.04.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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19
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Massmann A, Cavaleri MA, Oberbauer SF, Olivas PC, Porder S. Foliar Stoichiometry is Marginally Sensitive to Soil Phosphorus Across a Lowland Tropical Rainforest. Ecosystems 2021. [DOI: 10.1007/s10021-021-00640-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Midolo G, Kuss P, Wellstein C. Land use and water availability drive community-level plant functional diversity of grasslands along a temperature gradient in the Swiss Alps. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 764:142888. [PMID: 33131863 DOI: 10.1016/j.scitotenv.2020.142888] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 09/30/2020] [Accepted: 10/04/2020] [Indexed: 06/11/2023]
Abstract
Functional traits of mountain grassland communities strongly depend upon temperature variation along elevational gradients. However, little is known to what degree the direction of such trait-temperature relationships is shaped by other environmental factors or land-use types. Here, we investigated context-dependent patterns of plant functional trait variation in alpine grassland communities. Specifically, we tested whether temperature (degree-days) variation along an elevational gradient, interacts with water availability, soil properties and land-use type to moderate such patterns. We used cover-abundance and plant-trait data from 236 grassland relevés of the Swiss Alps along an elevational range of 500-2400 m a.s.l. with plant traits being specific leaf area (L), seed releasing height (H) and seed mass (S). We used indices capturing different dimensions of plant functional diversity as response variables, i.e. community weighted mean (CWM), trait range (TR) and functional dispersion (FDis). Land-use type and water availability interacted significantly with degree-days determining the responses of multiple plant traits community attributes. Specific leaf area (CWML) and seed releasing height (CWMH) increased with temperature in meadows and pastures, while no significant trend was detected in fallows. In meadows, seed mass (CWMS) increased and was at the same time less constrained (higher TRS) with increasing temperature. In pastures and fallows, by contrast, no seed trait-temperature trends were detected. In addition, water availability interacted with increasing temperature affecting functional dispersion: FDisL decreased only in sites with higher site water balance and TRS and FDisS increased in sites with low mean summer precipitation. Our findings suggest that functional diversity of grasslands might respond to climate warming with strong ecological differences depending on land-use types and water availability. Based on our results, managed meadows and pastures most likely change in direction to species with more acquisitive strategies, whereas in fallows, no specific trajectory of change is expected.
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Affiliation(s)
- Gabriele Midolo
- Faculty of Science and Technology, Free University of Bozen-Bolzano, Piazza Università 5, 39100 Bolzano, Italy
| | - Patrick Kuss
- Institute of Systematic & Evolutionary Botany, University of Zürich, Zollikerstrasse 107, CH-8008 Zürich, Switzerland
| | - Camilla Wellstein
- Faculty of Science and Technology, Free University of Bozen-Bolzano, Piazza Università 5, 39100 Bolzano, Italy.
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21
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Saprotrophic and ectomycorrhizal fungi exhibit contrasting richness patterns along elevational gradients in cool-temperate montane forests. FUNGAL ECOL 2021. [DOI: 10.1016/j.funeco.2020.101036] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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22
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Looby CI, Martin PH. Diversity and function of soil microbes on montane gradients: the state of knowledge in a changing world. FEMS Microbiol Ecol 2021; 96:5891232. [PMID: 32780840 DOI: 10.1093/femsec/fiaa122] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 06/15/2020] [Indexed: 12/27/2022] Open
Abstract
Mountains have a long history in the study of diversity. Like macroscopic taxa, soil microbes are hypothesized to be strongly structured by montane gradients, and recently there has been important progress in understanding how microbes are shaped by these conditions. Here, we summarize this literature and synthesize patterns of microbial diversity on mountains. Unlike flora and fauna that often display a mid-elevation peak in diversity, we found a decline (34% of the time) or no trend (33%) in total microbial diversity with increasing elevation. Diversity of functional groups also varied with elevation (e.g. saprotrophic fungi declined 83% of the time). Most studies (82%) found that climate and soils (especially pH) were the primary mechanisms driving shifts in composition, and drivers differed across taxa-fungi were mostly determined by climate, while bacteria (48%) and archaea (71%) were structured primarily by soils. We hypothesize that the central role of soils-which can vary independently of other abiotic and geographic gradients-in structuring microbial communities weakens diversity patterns expected on montane gradients. Moving forward, we need improved cross-study comparability of microbial diversity indices (i.e. standardizing sequencing) and more geographic replication using experiments to broaden our knowledge of microbial biogeography on global gradients.
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Affiliation(s)
- Caitlin I Looby
- Department of Ecology, Evolution and Behavior, University of Minnesota, Twin Cities, Saint Paul, MN 55108, USA
| | - Patrick H Martin
- Department of Biological Sciences, University of Denver, Denver, CO 80208, USA
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23
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Martini F, Aluthwattha ST, Mammides C, Armani M, Goodale UM. Plant apparency drives leaf herbivory in seedling communities across four subtropical forests. Oecologia 2020; 195:575-587. [PMID: 33251556 DOI: 10.1007/s00442-020-04804-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Accepted: 11/11/2020] [Indexed: 11/30/2022]
Abstract
Insect herbivory in natural forests is of critical importance in forest regeneration and dynamics. Some hypotheses that have been proposed to explain variation in leaf consumption by herbivores focus on biotic interactions, while others emphasize the role of the abiotic environment. Here, we evaluated the relative importance of both biotic and abiotic factors in explaining leaf damage on seedlings. We measured the percentage of leaf damage in the understory seedling community of four subtropical forests, covering an elevation gradient from 400 to 1850 m asl. We used fine-scale abiotic (elevation, canopy openness, topography, soil fertility) and biotic (seedling height and number of leaves, neighborhood composition) variables to determine both direct and indirect relationships using linear mixed models and structural equation modeling. We also explored the consistency of our results across the four forests. Taller seedlings experienced higher herbivore damage. Herbivory increased at higher elevations and in areas with higher light availability in one forest, but not in the other three. We found no evidence supporting the effects of biotic interactions on herbivory. Our results, at all levels of analysis, are consistent with the plant apparency theory, which posits that more apparent plants suffer greater attack. We did not find support for hypotheses stressing the role of neighborhood composition on herbivory. Similarly, the abiotic environment does not seem to influence herbivory significantly. We argue that plant apparency, rather than other biotic and abiotic factors, may be the most important predictor of leaf damage in the seedling communities of subtropical forests.
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Affiliation(s)
- Francesco Martini
- Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Daxuedonglu 100, Nanning, 530004, Guangxi, People's Republic of China. .,State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bioresources, College of Forestry, Guangxi University, Daxuedonglu 100, Nanning, 530004, Guangxi, People's Republic of China.
| | - S Tharanga Aluthwattha
- Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Daxuedonglu 100, Nanning, 530004, Guangxi, People's Republic of China.,State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bioresources, College of Forestry, Guangxi University, Daxuedonglu 100, Nanning, 530004, Guangxi, People's Republic of China
| | - Christos Mammides
- Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Daxuedonglu 100, Nanning, 530004, Guangxi, People's Republic of China
| | - Mohammed Armani
- Forestry Research Institute of Ghana, Council for Scientific and Industrial Research, Kumasi, Ghana
| | - Uromi Manage Goodale
- Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Daxuedonglu 100, Nanning, 530004, Guangxi, People's Republic of China. .,State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bioresources, College of Forestry, Guangxi University, Daxuedonglu 100, Nanning, 530004, Guangxi, People's Republic of China.
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Hulshof CM, Waring BG, Powers JS, Harrison SP. Trait-based signatures of cloud base height in a tropical cloud forest. AMERICAN JOURNAL OF BOTANY 2020; 107:886-894. [PMID: 32500611 DOI: 10.1002/ajb2.1483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 03/16/2020] [Indexed: 06/11/2023]
Abstract
PREMISE Clouds have profound consequences for ecosystem structure and function. Yet, the direct monitoring of clouds and their effects on biota is challenging especially in remote and topographically complex tropical cloud forests. We argue that known relationships between climate and the taxonomic and functional composition of plant communities may provide a fingerprint of cloud base height, thus providing a rapid and cost-effective assessment in remote tropical cloud forests. METHODS To detect cloud base height, we compared species turnover and functional trait values among herbaceous and woody plant communities in an ecosystem dominated by cloud formation. We measured soil and air temperature, soil nutrient concentrations, and extracellular enzyme activity. We hypothesized that woody and herbaceous plants would provide signatures of cloud base height, as evidenced by abrupt shifts in both taxonomic composition and plant function. RESULTS We demonstrated abrupt changes in taxonomic composition and the community- weighted mean of a key functional trait, specific leaf area, across elevation for both woody and herbaceous species, consistent with our predictions. However, abrupt taxonomic and functional changes occurred 100 m higher in elevation for herbaceous plants compared to woody ones. Soil temperature abruptly decreased where herbaceous taxonomic and functional turnover was high. Other environmental variables including soil biogeochemistry did not explain the abrupt change observed for woody plant communities. CONCLUSIONS We provide evidence that a trait-based approach can be used to estimate cloud base height. We outline how rises in cloud base height and differential environmental requirements between growth forms can be distinguished using this approach.
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Affiliation(s)
- Catherine M Hulshof
- Department of Biology, Virginia Commonwealth University, Richmond, Virginia, 23284, USA
| | - Bonnie G Waring
- Department of Biology and Ecology Center, Utah State University, Logan, Utah, 84322, USA
| | - Jennifer S Powers
- Departments of Ecology, Evolution, & Behavior and Plant and Microbial Biology, University of Minnesota, Saint Paul, Minnesota, 55108, USA
| | - Susan P Harrison
- Department of Environmental Science and Policy, University of California Davis, Davis, California, 95616, USA
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Peng Y, Bloomfield KJ, Prentice IC. A theory of plant function helps to explain leaf-trait and productivity responses to elevation. THE NEW PHYTOLOGIST 2020; 226:1274-1284. [PMID: 31971253 DOI: 10.1111/nph.16447] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 01/13/2020] [Indexed: 06/10/2023]
Abstract
Several publications have examined leaf-trait and carbon-cycling shifts along an Amazon-Andes transect spanning 3.5 km in elevation and 16°C in mean annual temperature. Photosynthetic capacity was previously shown to increase as temperature declines with increasing elevation, counteracting enzyme-kinetic effects. Primary production declines, nonetheless, due to decreasing light availability. We aimed to predict leaf-trait and production gradients from first principles, using published data to test an emerging theory whereby photosynthetic traits and primary production depend on optimal acclimation and/or adaptation to environment. We re-analysed published data for 210 species at 25 sites, fitting linear relationships to elevation for both predicted and observed photosynthetic traits and primary production. Declining leaf-internal/ambient CO2 ratio (χ) and increasing carboxylation (Vcmax ) and electron-transport (Jmax ) capacities with increasing elevation were predicted. Increases in leaf nitrogen content with elevation were explained by increasing Vcmax and leaf mass-per-area. Leaf and soil phosphorus covaried, but after controlling for elevation, no nutrient metric accounted for any additional variance in photosynthetic traits. Primary production was predicted to decline with elevation. This analysis unifies leaf and ecosystem observations in a common theoretical framework. The insensitivity of primary production to temperature is shown to emerge as a consequence of the optimisation of photosynthetic traits.
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Affiliation(s)
- Yunke Peng
- Masters Programme in Ecosystems and Environmental Change, Department of Life Sciences, Imperial College London, Silwood Park Campus, Buckhurst Road, Ascot, SL5 7PY, UK
- AXA Chair Programme in Biosphere and Climate Impacts, Department of Life Sciences, Imperial College London, Silwood Park Campus, Buckhurst Road, Ascot, SL5 7PY, UK
| | - Keith J Bloomfield
- AXA Chair Programme in Biosphere and Climate Impacts, Department of Life Sciences, Imperial College London, Silwood Park Campus, Buckhurst Road, Ascot, SL5 7PY, UK
| | - Iain Colin Prentice
- AXA Chair Programme in Biosphere and Climate Impacts, Department of Life Sciences, Imperial College London, Silwood Park Campus, Buckhurst Road, Ascot, SL5 7PY, UK
- Department of Biological Sciences, Macquarie University, North Ryde, NSW, 2109, Australia
- Department of Earth System Science, Tsinghua University, Beijing, 100084, China
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Fisher JB, Perakalapudi NV, Turner BL, Schimel DS, Cusack DF. Competing effects of soil fertility and toxicity on tropical greening. Sci Rep 2020; 10:6725. [PMID: 32317766 PMCID: PMC7174296 DOI: 10.1038/s41598-020-63589-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 03/28/2020] [Indexed: 11/29/2022] Open
Abstract
Tropical forests are expected to green up with increasing atmospheric CO2 concentrations, but primary productivity may be limited by soil nutrient availability. However, rarely have canopy-scale measurements been assessed against soil measurements in the tropics. Here, we sought to assess remotely sensed canopy greenness against steep soil nutrient gradients across 50 1-ha mature forest plots in Panama. Contrary to expectations, increases in in situ extractable soil phosphorus (P) and base cations (K, Mg) corresponded to declines in remotely sensed mean annual canopy greenness (r2 = 0.77-0.85; p < 0.1), controlling for precipitation. The reason for this inverse relationship appears to be that litterfall also increased with increasing soil P and cation availability (r2 = 0.88-0.98; p < 0.1), resulting in a decline in greenness with increasing annual litterfall (r2 = 0.94; p < 0.1). As such, greater soil nutrient availability corresponded to greater leaf turnover, resulting in decreased greenness. However, these decreases in greenness with increasing soil P and cations were countered by increases in greenness with increasing soil nitrogen (N) (r2 = 0.14; p < 0.1), which had no significant relationship with litterfall, likely reflecting a direct effect of soil N on leaf chlorophyll content, but not on litterfall rates. In addition, greenness increased with extractable soil aluminum (Al) (r2 = 0.97; p < 0.1), but Al had no significant relationship with litterfall, suggesting a physiological adaptation of plants to high levels of toxic metals. Thus, spatial gradients in canopy greenness are not necessarily positive indicators of soil nutrient scarcity. Using a novel remote sensing index of canopy greenness limitation, we assessed how observed greenness compares with potential greenness. We found a strong relationship with soil N only (r2 = 0.65; p < 0.1), suggesting that tropical canopy greenness in Panama is predominantly limited by soil N, even if plant productivity (e.g., litterfall) responds to rock-derived nutrients. Moreover, greenness limitation was also significantly correlated with fine root biomass and soil carbon stocks (r2 = 0.62-0.71; p < 0.1), suggesting a feedback from soil N to canopy greenness to soil carbon storage. Overall, these data point to the potential utility of a remote sensing product for assessing belowground properties in tropical ecosystems.
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Affiliation(s)
- Joshua B Fisher
- Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA, 91109, USA.
| | - Naga V Perakalapudi
- Department of Astronautical Engineering, University of Southern California, 854 Downey Way, Los Angeles, CA, 90089, USA
| | - Benjamin L Turner
- Smithsonian Tropical Research Institute, Apartado 0843-03092, Balboa, Ancon, Panama
| | - David S Schimel
- Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA, 91109, USA
| | - Daniela F Cusack
- Smithsonian Tropical Research Institute, Apartado 0843-03092, Balboa, Ancon, Panama
- Department of Ecosystem Science and Sustainability, Colorado State University, Campus Delivery 1476, Fort Collins, CO, 80523, USA
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Hagedorn F, Gavazov K, Alexander JM. Above- and belowground linkages shape responses of mountain vegetation to climate change. Science 2020; 365:1119-1123. [PMID: 31515385 DOI: 10.1126/science.aax4737] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Upward shifts of mountain vegetation lag behind rates of climate warming, partly related to interconnected changes belowground. Here, we unravel above- and belowground linkages by drawing insights from short-term experimental manipulations and elevation gradient studies. Soils will likely gain carbon in early successional ecosystems, while losing carbon as forest expands upward, and the slow, high-elevation soil development will constrain warming-induced vegetation shifts. Current approaches fail to predict the pace of these changes and how much they will be modified by interactions among plants and soil biota. Integrating mountain soils and their biota into monitoring programs, combined with innovative comparative and experimental approaches, will be crucial to overcome the paucity of belowground data and to better understand mountain ecosystem dynamics and their feedbacks to climate.
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Affiliation(s)
- Frank Hagedorn
- Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Zürcherstrasse 111, 8903 Birmensdorf, Switzerland.
| | - Konstantin Gavazov
- Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Zürcherstrasse 111, 8903 Birmensdorf, Switzerland
| | - Jake M Alexander
- Institute of Integrative Biology, ETH Zurich, Universitätstrasse 16, 8092 Zürich, Switzerland
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Elevation Gradient Altered Soil C, N, and P Stoichiometry of Pinus taiwanensis Forest on Daiyun Mountain. FORESTS 2019. [DOI: 10.3390/f10121089] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Researches focused on soil carbon (C), nitrogen (N), and phosphorus (P) content and the stoichiometry characteristics along elevation gradients are important for effective management of forest ecosystems. Taking the soil of different elevations from 900 to 1700 m on Daiyun Mountain as the object, the elevation distribution of total C, N, and P in soil and their stoichiometry characteristics were studied. Also, the driving factors resulting in the spatial heterogeneity of soil stoichiometry are presented. The results show the following: (1) The average soil C and N content was 53.03 g·kg−1 and 3.82 g·kg−1, respectively. The content of C and N at high elevation was higher than that of at low elevation. Soil phosphorus fluctuated with elevation. (2) With increasing elevation, soil C:N ratio increased initially to 17.40 at elevation between 900–1000 m, and then decreased to 12.02 at elevation 1600 m. The changing trends of C:P and N:P were similar, and they all fluctuated with elevation. (3) Elevation, soil bulk density, and soil temperature were the main factors influencing the variation of soil C, N, and C:N. Soil pH and slope position were the driving factors for soil P, C:P, and N:P. The soil is rich in C and N, and has less total phosphorus on Daiyun Mountain. Raising the level of phosphate fertilizer appropriately can help to improve soil fertility and promote plant growth as well. In light of this information, in the near future, it will be necessary to conduct separation management of C, N, and P with regular monitoring systems to maintain favorable conditions for soil.
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Wright SJ. Plant responses to nutrient addition experiments conducted in tropical forests. ECOL MONOGR 2019. [DOI: 10.1002/ecm.1382] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- S. Joseph Wright
- Smithsonian Tropical Research Institute Apartado 0843–03092 Balboa Panama
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Midolo G, De Frenne P, Hölzel N, Wellstein C. Global patterns of intraspecific leaf trait responses to elevation. GLOBAL CHANGE BIOLOGY 2019; 25:2485-2498. [PMID: 31056841 DOI: 10.1111/gcb.14646] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 04/03/2019] [Indexed: 06/09/2023]
Abstract
Elevational gradients are often used to quantify how traits of plant species respond to abiotic and biotic environmental variations. Yet, such analyses are frequently restricted spatially and applied along single slopes or mountain ranges. Since we know little on the response of intraspecific leaf traits to elevation across the globe, we here perform a global meta-analysis of leaf traits in 109 plant species located in 4 continents and reported in 71 studies published between 1983 and 2018. We quantified the intraspecific change in seven morpho-ecophysiological leaf traits along global elevational gradients: specific leaf area (SLA), leaf mass per area (LMA), leaf area (LA), nitrogen concentration per unit of area (Narea), nitrogen concentration per unit mass (Nmass), phosphorous concentration per unit mass (Pmass) and carbon isotope composition (δ13 C). We found LMA, Narea, Nmass and δ13 C to significantly increase and SLA to decrease with increasing elevation. Conversely, LA and Pmass showed no significant pattern with elevation worldwide. We found significantly larger increase in Narea, Nmass, Pmass and δ13 C with elevation in warmer regions. Larger responses to increasing elevation were apparent for SLA of herbaceous compared to woody species, but not for the other traits. Finally, we also detected evidences of covariation across morphological and physiological traits within the same elevational gradient. In sum, we demonstrate that there are common cross-species patterns of intraspecific leaf trait variation across elevational gradients worldwide. Irrespective of whether such variation is genetically determined via local adaptation or attributed to phenotypic plasticity, the leaf trait patterns quantified here suggest that plant species are adapted to live on a range of temperature conditions. Since the distribution of mountain biota is predominantly shifting upslope in response to changes in environmental conditions, our results are important to further our understanding of how plants species of mountain ecosystems adapt to global environmental change.
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Affiliation(s)
- Gabriele Midolo
- Faculty of Science and Technology, Free University of Bozen-Bolzano, Bolzano, Italy
| | - Pieter De Frenne
- Forest & Nature Lab, Department of Environment, Faculty of Bioscience Engineering, Ghent University, Melle-Gontrode, Belgium
| | - Norbert Hölzel
- Institute of Landscape Ecology, University of Münster, Münster, Germany
| | - Camilla Wellstein
- Faculty of Science and Technology, Free University of Bozen-Bolzano, Bolzano, Italy
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Shigyo N, Umeki K, Hirao T. Plant functional diversity and soil properties control elevational diversity gradients of soil bacteria. FEMS Microbiol Ecol 2019; 95:5366731. [DOI: 10.1093/femsec/fiz025] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 02/27/2019] [Indexed: 11/14/2022] Open
Affiliation(s)
- Nobuhiko Shigyo
- The University of Tokyo Chichibu Forest, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-49 Hinoda-machi, Chichibu, Saitama 368-0034, Japan
| | - Kiyoshi Umeki
- Graduate School of Horticulture, Chiba University, 648 Matsudo, Matsudo, Chiba 271–8510, Japan
| | - Toshihide Hirao
- The University of Tokyo Chichibu Forest, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-49 Hinoda-machi, Chichibu, Saitama 368-0034, Japan
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Cao Y, Wang Y, Xu Z. Soil C:P Ratio along Elevational Gradients in Picea schrenkiana Forest of Tianshan Mountains. POLISH JOURNAL OF ECOLOGY 2019. [DOI: 10.3161/15052249pje2018.66.4.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Yue'e Cao
- College of Resource and Environmental Science, Xinjiang University, Urumqi 830046, China
| | - Yao Wang
- Institute of Desert Meteorology, China Meteorological Administration, Urumqi 830002, China
| | - Zhonglin Xu
- College of Resource and Environmental Science, Xinjiang University, Urumqi 830046, China
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Growth and Needle Properties of Young Pinus koraiensis Sieb. et Zucc. Trees across an Elevational Gradient. FORESTS 2019. [DOI: 10.3390/f10010054] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A better understanding of the response of plant growth to elevational gradients may shed light on how plants respond to environmental variation and on the physiological mechanisms underlying these responses. This study analyzed whole plant growth and physiological and morphological properties of needles in young Pinus koraiensis Sieb. et Zucc. trees at thirteen points along an elevational gradient ranging from 750 to 1350 m above sea level (a.s.l.) at the end of a growing season on Changbai Mountain in northeastern China. Sampling and analyses indicated the following; (1) many needle properties of P. koraiensis varied with forest type along the elevational gradient though some needle properties (e.g., intrinsic water use efficiency, concentration of chlorophyll, and leaf mass per area) did not change with elevation and forest types; (2) growth was significantly influenced by both forest type and elevation and growth of saplings in P. koraiensis and mixed broadleaved forests was greater than that in evergreen forests and increased with elevation in both forest types; (3) in P. koraiensis and mixed broadleaved forests, there were significant correlations between growth properties and light saturation point, leaf water potential, mean within-crown humidity, annual precipitation, cumulative temperature (≥5 ∘ C), within-crown air temperature, and atmospheric pressure; while in evergreen forests, the leaf C, leaf P content, net rate of light saturation in photosynthesis, water content of soil, within-crown humidity, annual precipitation, cumulative temperature (≥5 ∘ C), within-crown air temperature, and total soil P content displayed a significant relationship with plant growth. These results may help illuminate how P. koraiensis responds to environmental variation and evaluate the adaptive potential of Pinus koraiensis to climate change. Data presented here could also contribute to the more accurate estimation of carbon stocks in this area and to refinement of a plant trait database.
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Climate Sensitivity of Tropical Trees Along an Elevation Gradient in Rwanda. FORESTS 2018. [DOI: 10.3390/f9100647] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Elevation gradients offer excellent opportunities to explore the climate sensitivity of vegetation. Here, we investigated elevation patterns of structural, chemical, and physiological traits in tropical tree species along a 1700–2700 m elevation gradient in Rwanda, central Africa. Two early-successional (Polyscias fulva, Macaranga kilimandscharica) and two late-successional (Syzygium guineense, Carapa grandiflora) species that are abundant in the area and present along the entire gradient were investigated. We found that elevation patterns in leaf stomatal conductance (gs), transpiration (E), net photosynthesis (An), and water-use efficiency were highly season-dependent. In the wet season, there was no clear variation in gs or An with elevation, while E was lower at cooler high-elevation sites. In the dry season, gs, An, and E were all lower at drier low elevation sites. The leaf-to-air temperature difference was smallest in P. fulva, which also had the highest gs and E. Water-use efficiency (An/E) increased with elevation in the wet season, but not in the dry season. Leaf nutrient ratios indicated that trees at all sites are mostly P limited and the N:P ratio did not decrease with increasing elevation. Our finding of strongly decreased gas exchange at lower sites in the dry season suggests that both transpiration and primary production would decline in a climate with more pronounced dry periods. Furthermore, we showed that N limitation does not increase with elevation in the forests studied, as otherwise most commonly reported for tropical montane forests.
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Gong X, Xu Z, Lu W, Tian Y, Liu Y, Wang Z, Dai C, Zhao J, Li Z. Spatial Patterns of Leaf Carbon, Nitrogen, and Phosphorus Stoichiometry of Aquatic Macrophytes in the Arid Zone of Northwestern China. FRONTIERS IN PLANT SCIENCE 2018; 9:1398. [PMID: 30298083 PMCID: PMC6160588 DOI: 10.3389/fpls.2018.01398] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 09/03/2018] [Indexed: 05/09/2023]
Abstract
Ecological stoichiometry is a powerful indicator for understanding the adaptation of plants to environment. However, understanding of stoichiometric characteristics of leaf carbon (C%), nitrogen (N%), and phosphorus (P%) for aquatic macrophytes remains limited. In this study, 707 samples from 146 sites were collected to study the variations in leaf C%, N%, and P%, and tried to explore how different environmental conditions affect leaf C, N, and P stoichiometry. Results showed that the mean values of leaf C%, N%, P%, and N:P ratios were 39.95%, 2.12%, 0.14%, and 16.60% of macrophytes across the arid zone of northwestern China, respectively. And the mean values of leaf P% were lower than those from the Tibetan Plateau and eastern China, which maybe due to an adaptation strategy of the plants to the unique conditions in the arid zone in the long-term evolutionary process. The higher N:P ratios suggested that P was established as the limiting factor of the macrophytes communities in the arid zone of northwestern China. There were significant differences in leaf C%, N%, P%, and their ratios among different life forms. Our results also showed strong relationships between leaf N% and N:P ratios and longitude, leaf N%, P%, and N:P ratios and latitude, and leaf N% and P% and altitude, respectively. In addition, the results showed that pH can significantly influence leaf C%. Our results supported the temperature-plant physiology hypothesis owing to a negative relationship between leaf N% and P% of macrophytes and mean annual temperature in the arid zone of northwestern China. The different patterns of leaf stoichiometry between the arid zone of northwestern China and eastern China indicated that there were different physiological and ecological adaptability of macrophytes to environmental gradients in different climatic zones.
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Affiliation(s)
| | | | | | | | | | | | | | - Jinghui Zhao
- Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Regional Development and Environmental Response, Faculty of Resources and Environment, College of Life Sciences, Hubei University, Wuhan, China
| | - Zhongqiang Li
- Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Regional Development and Environmental Response, Faculty of Resources and Environment, College of Life Sciences, Hubei University, Wuhan, China
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Čapek P, Manzoni S, Kaštovská E, Wild B, Diáková K, Bárta J, Schnecker J, Biasi C, Martikainen PJ, Alves RJE, Guggenberger G, Gentsch N, Hugelius G, Palmtag J, Mikutta R, Shibistova O, Urich T, Schleper C, Richter A, Šantrůčková H. A plant–microbe interaction framework explaining nutrient effects on primary production. Nat Ecol Evol 2018; 2:1588-1596. [DOI: 10.1038/s41559-018-0662-8] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Accepted: 08/07/2018] [Indexed: 11/09/2022]
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37
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Metcalfe DB, Rocha W, Balch JK, Brando PM, Doughty CE, Malhi Y. Impacts of fire on sources of soil CO 2 efflux in a dry Amazon rain forest. GLOBAL CHANGE BIOLOGY 2018; 24:3629-3641. [PMID: 29748988 DOI: 10.1111/gcb.14305] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 04/27/2018] [Accepted: 04/30/2018] [Indexed: 06/08/2023]
Abstract
Fire at the dry southern margin of the Amazon rainforest could have major consequences for regional soil carbon (C) storage and ecosystem carbon dioxide (CO2 ) emissions, but relatively little information exists about impacts of fire on soil C cycling within this sensitive ecotone. We measured CO2 effluxes from different soil components (ground surface litter, roots, mycorrhizae, soil organic matter) at a large-scale burn experiment designed to simulate a severe but realistic potential future scenario for the region (Fire plot) in Mato Grosso, Brazil, over 1 year, and compared these measurements to replicated data from a nearby, unmodified Control plot. After four burns over 5 years, soil CO2 efflux (Rs ) was ~5.5 t C ha-1 year-1 lower on the Fire plot compared to the Control. Most of the Fire plot Rs reduction was specifically due to lower ground surface litter and root respiration. Mycorrhizal respiration on both plots was around ~20% of Rs . Soil surface temperature appeared to be more important than moisture as a driver of seasonal patterns in Rs at the site. Regular fire events decreased the seasonality of Rs at the study site, due to apparent differences in environmental sensitivities among biotic and abiotic soil components. These findings may contribute toward improved predictions of the amount and temporal pattern of C emissions across the large areas of tropical forest facing increasing fire disturbances associated with climate change and human activities.
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Affiliation(s)
- Daniel B Metcalfe
- Department of Physical Geography and Ecosystem Science, Lund University, Lund, Sweden
- Department of Ecology and Environmental Science, Umeå University, Umeå, Sweden
| | - Wanderley Rocha
- Instituto de Pesquisa Ambiental da Amazônia, Canarana, Brazil
| | - Jennifer K Balch
- Department of Geography, University of Colorado-Boulder, Boulder, Colorado
| | - Paulo M Brando
- Instituto de Pesquisa Ambiental da Amazônia, Canarana, Brazil
- Woods Hole Research Center, Falmouth, Massachusetts
| | - Christopher E Doughty
- School of Informatics, Computing, and Cyber Systems, Northern Arizona University, Flagstaff, Arizona
| | - Yadvinder Malhi
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, UK
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Wang A, Wang X, Tognetti R, Lei JP, Pan HL, Liu XL, Jiang Y, Wang XY, He P, Yu FH, Li MH. Elevation alters carbon and nutrient concentrations and stoichiometry in Quercus aquifolioides in southwestern China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 622-623:1463-1475. [PMID: 29890611 DOI: 10.1016/j.scitotenv.2017.12.070] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 12/06/2017] [Accepted: 12/06/2017] [Indexed: 05/26/2023]
Abstract
Elevation is a complex environmental factor altering temperature, light, moisture and soil nutrient availability, and thus may affect plant growth and physiology. Such effects of elevation may also depend on seasons. Along an elevational gradient of the Balang Mountain, southwestern China, we sampled soil and 2-year old leaves, 2-year old shoots, stem sapwood and fine roots (diameter<5mm) of Quercus aquifolioides at 2843, 2978, 3159, 3327, 3441 and 3589m a.s.l. in both summer and winter. In summer, the concentrations of tissue non-structural carbohydrates (NSC) did not decrease with increasing elevation, suggesting that the carbon supply is sufficient for plant growth at high altitude in the growing season. The concentration of NSC in fine roots decreased with elevation in winter, and the mean concentration of NSC across tissues in a whole plant showed no significant difference between the two sampling seasons, suggesting that the direction of NSC reallocation among plant tissues changed with season. During the growing season, NSC transferred from leaves to other tissues, and in winter NSC stored in roots transferred from roots to aboveground tissues. Available soil N increased with elevation, but total N concentrations in plant tissues did not show any clear elevational pattern. Both available soil P and total P concentrations in all plant tissues decreased with increasing elevation. Thus, tissue N:P ratio increased with elevation, suggesting that P may become a limiting element for plant growth at high elevation. The present study suggests that the upper limit of Q. aquifolioides on Balang Mountain may be co-determined by winter root NSC storage and P availability. Our results contribute to better understanding of the mechanisms for plants' upper limit formation.
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Affiliation(s)
- Ao Wang
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou 318000, China; College of Nature Conservation, Beijing Forestry University, Beijing 100083, China; Forest dynamics, Swiss Federal Research Institute WSL, Zuercherstrasse 111, CH-8903 Birmensdorf, Switzerland
| | - Xue Wang
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou 318000, China; Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China; Forest dynamics, Swiss Federal Research Institute WSL, Zuercherstrasse 111, CH-8903 Birmensdorf, Switzerland
| | - Roberto Tognetti
- Dipartimento di Agraria, Ambiente e Alimenti, Università del Molise, 86090 Campobasso, Italy - European Forest Institute (EFI) Project Centre on Mountain Forests (MOUNTFOR), 38010 San Michele all'Adige, Italy
| | - Jing-Pin Lei
- Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
| | - Hong-Li Pan
- Sichuan Academy of Forestry, Chengdu 610081, China
| | | | - Yong Jiang
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China
| | - Xiao-Yu Wang
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China; Forest dynamics, Swiss Federal Research Institute WSL, Zuercherstrasse 111, CH-8903 Birmensdorf, Switzerland
| | - Peng He
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China; Forest dynamics, Swiss Federal Research Institute WSL, Zuercherstrasse 111, CH-8903 Birmensdorf, Switzerland
| | - Fei-Hai Yu
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou 318000, China.
| | - Mai-He Li
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China; Forest dynamics, Swiss Federal Research Institute WSL, Zuercherstrasse 111, CH-8903 Birmensdorf, Switzerland.
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39
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Estimation of Above Ground Biomass in a Tropical Mountain Forest in Southern Ecuador Using Airborne LiDAR Data. REMOTE SENSING 2018. [DOI: 10.3390/rs10050660] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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40
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Wright SJ, Turner BL, Yavitt JB, Harms KE, Kaspari M, Tanner EVJ, Bujan J, Griffin EA, Mayor JR, Pasquini SC, Sheldrake M, Garcia MN. Plant responses to fertilization experiments in lowland, species-rich, tropical forests. Ecology 2018; 99:1129-1138. [PMID: 29460277 DOI: 10.1002/ecy.2193] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 01/07/2018] [Accepted: 01/22/2018] [Indexed: 01/22/2023]
Abstract
We present a meta-analysis of plant responses to fertilization experiments conducted in lowland, species-rich, tropical forests. We also update a key result and present the first species-level analyses of tree growth rates for a 15-yr factorial nitrogen (N), phosphorus (P), and potassium (K) experiment conducted in central Panama. The update concerns community-level tree growth rates, which responded significantly to the addition of N and K together after 10 yr of fertilization but not after 15 yr. Our experimental soils are infertile for the region, and species whose regional distributions are strongly associated with low soil P availability dominate the local tree flora. Under these circumstances, we expect muted responses to fertilization, and we predicted species associated with low-P soils would respond most slowly. The data did not support this prediction, species-level tree growth responses to P addition were unrelated to species-level soil P associations. The meta-analysis demonstrated that nutrient limitation is widespread in lowland tropical forests and evaluated two directional hypotheses concerning plant responses to N addition and to P addition. The meta-analysis supported the hypothesis that tree (or biomass) growth rate responses to fertilization are weaker in old growth forests and stronger in secondary forests, where rapid biomass accumulation provides a nutrient sink. The meta-analysis found no support for the long-standing hypothesis that plant responses are stronger for P addition and weaker for N addition. We do not advocate discarding the latter hypothesis. There are only 14 fertilization experiments from lowland, species-rich, tropical forests, 13 of the 14 experiments added nutrients for five or fewer years, and responses vary widely among experiments. Potential fertilization responses should be muted when the species present are well adapted to nutrient-poor soils, as is the case in our experiment, and when pest pressure increases with fertilization, as it does in our experiment. The statistical power and especially the duration of fertilization experiments conducted in old growth, tropical forests might be insufficient to detect the slow, modest growth responses that are to be expected.
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Affiliation(s)
- S Joseph Wright
- Smithsonian Tropical Research Institute, Apartado 0843, Balboa, Panama
| | - Benjamin L Turner
- Smithsonian Tropical Research Institute, Apartado 0843, Balboa, Panama
| | - Joseph B Yavitt
- Department of Natural Resources, Cornell University, Ithaca, New York, 14853, USA
| | - Kyle E Harms
- Department of Biological Sciences, Louisiana State University, Baton Rouge, Louisiana, 70803, USA
| | - Michael Kaspari
- Department of Biology, University of Oklahoma, Norman, Oklahoma, 73019, USA
| | - Edmund V J Tanner
- Smithsonian Tropical Research Institute, Apartado 0843, Balboa, Panama.,Department of Plant Sciences, University of Cambridge, Cambridge, CB2 3EA, United Kingdom
| | - Jelena Bujan
- Department of Biology, University of Oklahoma, Norman, Oklahoma, 73019, USA
| | - Eric A Griffin
- Smithsonian Tropical Research Institute, Apartado 0843, Balboa, Panama.,Department of Biological Sciences, University of Pittsburgh, 4249 Fifth Avenue, Pittsburgh, Pennsylvania, 15260, USA.,Smithsonian Environmental Research Center, 647 Contees Wharf Road, Edgewater, Maryland, 21307, USA
| | - Jordan R Mayor
- Smithsonian Tropical Research Institute, Apartado 0843, Balboa, Panama.,ICF, P.O. Box 4495, Arcata, California, 95518, USA
| | - Sarah C Pasquini
- Department of Biological Sciences, University of Pittsburgh, 4249 Fifth Avenue, Pittsburgh, Pennsylvania, 15260, USA
| | - Merlin Sheldrake
- Smithsonian Tropical Research Institute, Apartado 0843, Balboa, Panama.,Department of Plant Sciences, University of Cambridge, Cambridge, CB2 3EA, United Kingdom
| | - Milton N Garcia
- Smithsonian Tropical Research Institute, Apartado 0843, Balboa, Panama
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41
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Orivel J, Klimes P, Novotny V, Leponce M. Resource use and food preferences in understory ant communities along a complete elevational gradient in Papua New Guinea. Biotropica 2018. [DOI: 10.1111/btp.12539] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jérôme Orivel
- CNRS, UMR Ecologie des Forêts de Guyane; AgroParisTech, CIRAD, INRA; Université de Guyane; Université des Antilles; Campus Agronomique, BP316 97379 Kourou cedex France
| | - Petr Klimes
- Institute of Entomology Biology Centre; Czech Academy of Sciences and Faculty of Science; University of South Bohemia; Branisovska 31 370 05 Ceske Budejovice Czech Republic
- The New Binatang Research Center; Nagada Harbour, P.O. Box 604 Madang Papua New Guinea
| | - Vojtech Novotny
- Institute of Entomology Biology Centre; Czech Academy of Sciences and Faculty of Science; University of South Bohemia; Branisovska 31 370 05 Ceske Budejovice Czech Republic
- The New Binatang Research Center; Nagada Harbour, P.O. Box 604 Madang Papua New Guinea
| | - Maurice Leponce
- Biodiversity Monitoring & Assessment Unit; Royal Belgian Institute of Natural Sciences; 29 rue Vautier 1000 Brussels Belgium
- Evolutionary Biology & Ecology; Université Libre de Bruxelles; CP 160/12, 50 av. F.D. Roosevelt 1050 Brussels Belgium
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42
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Cárate-Tandalla D, Camenzind T, Leuschner C, Homeier J. Contrasting species responses to continued nitrogen and phosphorus addition in tropical montane forest tree seedlings. Biotropica 2017. [DOI: 10.1111/btp.12518] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Daisy Cárate-Tandalla
- Plant Ecology and Ecosystems Research; University of Goettingen; Untere Karspuele 2 37073 Goettingen Germany
| | - Tessa Camenzind
- Plant Ecology; Institute of Biology; Freie Universität Berlin; Altensteinstraβe 6 14195 Berlin Germany
- Berlin-Brandenburg Institute of Advanced Biodiversity Research; Berlin Germany
| | - Christoph Leuschner
- Plant Ecology and Ecosystems Research; University of Goettingen; Untere Karspuele 2 37073 Goettingen Germany
| | - Jürgen Homeier
- Plant Ecology and Ecosystems Research; University of Goettingen; Untere Karspuele 2 37073 Goettingen Germany
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43
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Camenzind T, Hättenschwiler S, Treseder KK, Lehmann A, Rillig MC. Nutrient limitation of soil microbial processes in tropical forests. ECOL MONOGR 2017. [DOI: 10.1002/ecm.1279] [Citation(s) in RCA: 174] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Tessa Camenzind
- Institute of Biology; Freie Universität Berlin; Altensteinstr. 6 14195 Berlin Germany
- Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB); 14195 Berlin Germany
| | - Stephan Hättenschwiler
- Centre d'Ecologie Fonctionnelle et Evolutive (CEFE); UMR 5175; CNRS, Université de Montpellier, Université Paul-Valéry Montpellier, EPHE; 1919 route de Mende 34293 Montpellier Cedex 5 France
| | - Kathleen K. Treseder
- School of Biological Sciences; University of California; Irvine California 92697 USA
| | - Anika Lehmann
- Institute of Biology; Freie Universität Berlin; Altensteinstr. 6 14195 Berlin Germany
- Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB); 14195 Berlin Germany
| | - Matthias C. Rillig
- Institute of Biology; Freie Universität Berlin; Altensteinstr. 6 14195 Berlin Germany
- Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB); 14195 Berlin Germany
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44
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Modest Gaseous Nitrogen Losses Point to Conservative Nitrogen Cycling in a Lowland Tropical Forest Watershed. Ecosystems 2017. [DOI: 10.1007/s10021-017-0193-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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45
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Matyssek R, Kozovits AR, Wieser G, King J, Rennenberg H. Woody-plant ecosystems under climate change and air pollution-response consistencies across zonobiomes? TREE PHYSIOLOGY 2017; 37:706-732. [PMID: 28338970 DOI: 10.1093/treephys/tpx009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 01/22/2017] [Indexed: 06/06/2023]
Abstract
Forests store the largest terrestrial pools of carbon (C), helping to stabilize the global climate system, yet are threatened by climate change (CC) and associated air pollution (AP, highlighting ozone (O3) and nitrogen oxides (NOx)). We adopt the perspective that CC-AP drivers and physiological impacts are universal, resulting in consistent stress responses of forest ecosystems across zonobiomes. Evidence supporting this viewpoint is presented from the literature on ecosystem gross/net primary productivity and water cycling. Responses to CC-AP are compared across evergreen/deciduous foliage types, discussing implications of nutrition and resource turnover at tree and ecosystem scales. The availability of data is extremely uneven across zonobiomes, yet unifying patterns of ecosystem response are discernable. Ecosystem warming results in trade-offs between respiration and biomass production, affecting high elevation forests more than in the lowland tropics and low-elevation temperate zone. Resilience to drought is modulated by tree size and species richness. Elevated O3 tends to counteract stimulation by elevated carbon dioxide (CO2). Biotic stress and genomic structure ultimately determine ecosystem responsiveness. Aggrading early- rather than mature late-successional communities respond to CO2 enhancement, whereas O3 affects North American and Eurasian tree species consistently under free-air fumigation. Insect herbivory is exacerbated by CC-AP in biome-specific ways. Rhizosphere responses reflect similar stand-level nutritional dynamics across zonobiomes, but are modulated by differences in tree-soil nutrient cycling between deciduous and evergreen systems, and natural versus anthropogenic nitrogen (N) oversupply. The hypothesis of consistency of forest responses to interacting CC-AP is supported by currently available data, establishing the precedent for a global network of long-term coordinated research sites across zonobiomes to simultaneously advance both bottom-up (e.g., mechanistic) and top-down (systems-level) understanding. This global, synthetic approach is needed because high biological plasticity and physiographic variation across individual ecosystems currently limit development of predictive models of forest responses to CC-AP. Integrated research on C and nutrient cycling, O3-vegetation interactions and water relations must target mechanisms' ecosystem responsiveness. Worldwide case studies must be subject to biostatistical exploration to elucidate overarching response patterns and synthesize the resulting empirical data through advanced modelling, in order to provide regionally coherent, yet globally integrated information in support of internationally coordinated decision-making and policy development.
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Affiliation(s)
- R Matyssek
- Technische Universität München, TUM School of Life Sciences Weihenstephan, Chair of Ecophysiology of Plants, Hans-Carl-von-Carlowitz-Platz 2, D-85354 Freising, Germany
| | - A R Kozovits
- Universidade Federal de Ouro Preto, Department of Biodiversity, Evolution and Environment, Campus Morro do Cruzeiro, Bauxita, 35.400-000 Ouro Preto, MG, Brazil
| | - G Wieser
- Department of Alpine Timberline Ecophysiology, Federal Office and Research Centre for Forests, Innsbruck, Austria
| | - J King
- Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC, USA
| | - H Rennenberg
- Chair of Tree Physiology, Institute of Forest Sciences, University of Freiburg, Georges-Koehler-Allee 53/54, D79110 Freiburg, Germany
- King Saud University, PO Box 2454, Riyadh 11451, Saudi Arabia
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46
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Asner GP, Martin RE, Anderson CB, Kryston K, Vaughn N, Knapp DE, Bentley LP, Shenkin A, Salinas N, Sinca F, Tupayachi R, Quispe Huaypar K, Montoya Pillco M, Ccori Álvarez FD, Díaz S, Enquist BJ, Malhi Y. Scale dependence of canopy trait distributions along a tropical forest elevation gradient. THE NEW PHYTOLOGIST 2017; 214:973-988. [PMID: 27349599 DOI: 10.1111/nph.14068] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Accepted: 05/16/2016] [Indexed: 05/12/2023]
Abstract
Average responses of forest foliar traits to elevation are well understood, but far less is known about trait distributional responses to elevation at multiple ecological scales. This limits our understanding of the ecological scales at which trait variation occurs in response to environmental drivers and change. We analyzed and compared multiple canopy foliar trait distributions using field sampling and airborne imaging spectroscopy along an Andes-to-Amazon elevation gradient. Field-estimated traits were generated from three community-weighting methods, and remotely sensed estimates of traits were made at three scales defined by sampling grain size and ecological extent. Field and remote sensing approaches revealed increases in average leaf mass per unit area (LMA), water, nonstructural carbohydrates (NSCs) and polyphenols with increasing elevation. Foliar nutrients and photosynthetic pigments displayed little to no elevation trend. Sample weighting approaches had little impact on field-estimated trait responses to elevation. Plot representativeness of trait distributions at landscape scales decreased with increasing elevation. Remote sensing indicated elevation-dependent increases in trait variance and distributional skew. Multiscale invariance of LMA, leaf water and NSC mark these traits as candidates for tracking forest responses to changing climate. Trait-based ecological studies can be greatly enhanced with multiscale studies made possible by imaging spectroscopy.
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Affiliation(s)
- Gregory P Asner
- Department of Global Ecology, Carnegie Institution for Science, 260 Panama Street, Stanford, CA, 94305, USA
| | - Roberta E Martin
- Department of Global Ecology, Carnegie Institution for Science, 260 Panama Street, Stanford, CA, 94305, USA
| | - Christopher B Anderson
- Department of Global Ecology, Carnegie Institution for Science, 260 Panama Street, Stanford, CA, 94305, USA
| | - Katherine Kryston
- Department of Global Ecology, Carnegie Institution for Science, 260 Panama Street, Stanford, CA, 94305, USA
| | - Nicholas Vaughn
- Department of Global Ecology, Carnegie Institution for Science, 260 Panama Street, Stanford, CA, 94305, USA
| | - David E Knapp
- Department of Global Ecology, Carnegie Institution for Science, 260 Panama Street, Stanford, CA, 94305, USA
| | - Lisa Patrick Bentley
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, OX1 3QY, UK
| | - Alexander Shenkin
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, OX1 3QY, UK
| | - Norma Salinas
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, OX1 3QY, UK
- Sección Química, Pontificia Universidad Católica del Perú, Avenida Universitaria 1801, San Miguel, Lima, 32, Perú
| | - Felipe Sinca
- Department of Global Ecology, Carnegie Institution for Science, 260 Panama Street, Stanford, CA, 94305, USA
| | - Raul Tupayachi
- Department of Global Ecology, Carnegie Institution for Science, 260 Panama Street, Stanford, CA, 94305, USA
| | | | - Milenka Montoya Pillco
- Universidad Nacional de San Antonio Abad del Cusco, Av. de la Cultura, Nro. 733, Cusco, Perú
| | | | - Sandra Díaz
- Instituto Multidisciplinario de Biología Vegetal (IMBIV), CONICET and FCEFyN, Universidad Nacional de Córdoba, Casilla de Correo 495, 5000, Córdoba, Argentina
| | - Brian J Enquist
- Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ, 85721-0001, USA
- The Santa Fe Institute, 1399 Hyde Park Road, Santa Fe, NM, 87501, USA
| | - Yadvinder Malhi
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, OX1 3QY, UK
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47
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Malhi Y, Girardin CAJ, Goldsmith GR, Doughty CE, Salinas N, Metcalfe DB, Huaraca Huasco W, Silva-Espejo JE, Del Aguilla-Pasquell J, Farfán Amézquita F, Aragão LEOC, Guerrieri R, Ishida FY, Bahar NHA, Farfan-Rios W, Phillips OL, Meir P, Silman M. The variation of productivity and its allocation along a tropical elevation gradient: a whole carbon budget perspective. THE NEW PHYTOLOGIST 2017; 214:1019-1032. [PMID: 27768811 DOI: 10.1111/nph.14189] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 07/12/2016] [Indexed: 05/12/2023]
Abstract
Why do forest productivity and biomass decline with elevation? To address this question, research to date generally has focused on correlative approaches describing changes in woody growth and biomass with elevation. We present a novel, mechanistic approach to this question by quantifying the autotrophic carbon budget in 16 forest plots along a 3300 m elevation transect in Peru. Low growth rates at high elevations appear primarily driven by low gross primary productivity (GPP), with little shift in either carbon use efficiency (CUE) or allocation of net primary productivity (NPP) between wood, fine roots and canopy. The lack of trend in CUE implies that the proportion of photosynthate allocated to autotrophic respiration is not sensitive to temperature. Rather than a gradual linear decline in productivity, there is some limited but nonconclusive evidence of a sharp transition in NPP between submontane and montane forests, which may be caused by cloud immersion effects within the cloud forest zone. Leaf-level photosynthetic parameters do not decline with elevation, implying that nutrient limitation does not restrict photosynthesis at high elevations. Our data demonstrate the potential of whole carbon budget perspectives to provide a deeper understanding of controls on ecosystem functioning and carbon cycling.
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Affiliation(s)
- Yadvinder Malhi
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, OX1 3QY, UK
| | - Cécile A J Girardin
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, OX1 3QY, UK
| | - Gregory R Goldsmith
- Ecosystem Fluxes Group, Laboratory for Atmospheric Chemistry, Paul Scherrer Institute, Villigen PSI, 5232, Switzerland
| | - Christopher E Doughty
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, OX1 3QY, UK
| | - Norma Salinas
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, OX1 3QY, UK
- Universidad Nacional San Antonio Abad del Cusco, Cusco, Peru
| | - Daniel B Metcalfe
- Department of Physical Geography and Ecosystem Science, Lund University, SE 223 62, Lund, Sweden
| | | | | | | | | | - Luiz E O C Aragão
- Remote Sensing Division, National Institute for Space Research, Av. dos Astronautas, 1.758, São José dos Campos, SP, 12227-010, Brazil
- College of Life and Environmental Sciences, University of Exeter, Exeter, EX4 4QD, UK
| | - Rossella Guerrieri
- Centre for Ecological Research and Forestry Applications, CREAF c/o Universidad Autonoma de Barcelona, Edificio C, 08290, Cerdanyola, Barcelona, Spain
- School of Geosciences, University of Edinburgh, Edinburgh, EH8 9XP, UK
| | - Françoise Yoko Ishida
- College of Marine and Environmental Sciences, Centre of Tropical Environmental and Sustainabilility Science, James Cook University, Cairns, Qld, 4870, Australia
| | - Nur H A Bahar
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, Building 134, The Australian National University, Canberra, ACT, 2601, Australia
| | - William Farfan-Rios
- Department of Biology, Wake Forest University, Winston-Salem, NC, 27109, USA
| | | | - Patrick Meir
- School of Geosciences, University of Edinburgh, Edinburgh, EH8 9XP, UK
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, Building 134, The Australian National University, Canberra, ACT, 2601, Australia
| | - Miles Silman
- Department of Biology, Wake Forest University, Winston-Salem, NC, 27109, USA
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48
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Andersen KM, Mayor JR, Turner BL. Plasticity in nitrogen uptake among plant species with contrasting nutrient acquisition strategies in a tropical forest. Ecology 2017; 98:1388-1398. [DOI: 10.1002/ecy.1793] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 02/07/2017] [Accepted: 02/16/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Kelly M. Andersen
- Smithsonian Tropical Research Institute; Apartado Postal 0843-03092 Balboa Republic of Panama
- College of Life and Environmental Sciences; University of Exeter; Exeter EX4 4RJ UK
| | - Jordan R. Mayor
- Smithsonian Tropical Research Institute; Apartado Postal 0843-03092 Balboa Republic of Panama
- Department of Biology; University of Florida; Gainesville Florida 32611 USA
| | - Benjamin L. Turner
- Smithsonian Tropical Research Institute; Apartado Postal 0843-03092 Balboa Republic of Panama
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49
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Taylor PG, Cleveland CC, Wieder WR, Sullivan BW, Doughty CE, Dobrowski SZ, Townsend AR. Temperature and rainfall interact to control carbon cycling in tropical forests. Ecol Lett 2017; 20:779-788. [DOI: 10.1111/ele.12765] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Revised: 11/21/2016] [Accepted: 03/02/2017] [Indexed: 11/30/2022]
Affiliation(s)
- Philip G. Taylor
- Institute for Arctic and Alpine Research University of Colorado Boulder CO USA
| | - Cory C. Cleveland
- Department of Ecosystem and Conservation Sciences University of Montana Missoula MT USA
| | - William R. Wieder
- Institute for Arctic and Alpine Research University of Colorado Boulder CO USA
- National Center for Atmospheric Research TSS, CGD/ NCAR Boulder CO USA
| | - Benjamin W. Sullivan
- Department of Natural Resources & Environmental Science and the Global Water Center University of Nevada‐Reno Reno NV USA
| | - Christopher E. Doughty
- School of Informatics Computing and Cyber systems Northern Arizona University Flagstaff AZ USA
| | | | - Alan R. Townsend
- Institute for Arctic and Alpine Research and Environmental Studies Program University of Colorado Boulder CO USA
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50
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Altitudinal filtering of large-tree species explains above-ground biomass variation in an Atlantic Central African rain forest. JOURNAL OF TROPICAL ECOLOGY 2017. [DOI: 10.1017/s0266467416000602] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Abstract:Patterns in above-ground biomass of tropical forests over short altitudinal gradients are poorly known. The aim of this study was to investigate the variation of above-ground biomass with altitude in old-growth forests and determine the importance of changes in floristic composition as a cause of this variation. We used a dataset from 15 1-ha permanent plots established from lowland (200 m asl) to submontane forests (900 m asl) in the Ngovayang Massif, south-western Cameroon. We analysed variation over altitude in two specific functional traits, the potential maximum tree height and the wood density. Forest above-ground biomass decreased from 500–600 Mg ha−1 in lowland plots to around 260 Mg ha−1 at the highest altitudes. The contribution to above-ground biomass of large-tree species (dbh ≥ 70 cm) decreased with altitude, while the contribution of smaller trees was constant. Contribution of the Fabaceae subfamily Caesalpinioideae decreased with altitude, while those of Clusiaceae, Phyllanthaceae and Burseraceae increased. While potential maximum tree height significantly decreased, wood specific gravity displayed no trend along the gradient. Finally, the decrease in above-ground biomass along the short altitudinal gradient can be at least partially explained by a shift in species composition, with large-tree species being filtered out at the highest altitudes. These results suggest that global change could lead to significant shifts in the properties of montane forests over time.
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