scholarly journals CrowdCurio: an online crowdsourcing platform to facilitate climate change studies using herbarium specimens

2017 ◽  
Vol 215 (1) ◽  
pp. 479-488 ◽  
Author(s):  
Charles G. Willis ◽  
Edith Law ◽  
Alex C. Williams ◽  
Brian F. Franzone ◽  
Rebecca Bernardos ◽  
...  
Keyword(s):  
Climate Change ◽  
Herbarium Specimens

Herbarium specimens, photographs, and field observations show Philadelphia area plants are responding to climate change

2012 ◽  
Vol 99 (4) ◽  
pp. 751-756 ◽  
Author(s):  
Zoe A. Panchen ◽  
Richard B. Primack ◽  
Tomasz Aniśko ◽  
Robert E. Lyons
Keyword(s):  
Climate Change ◽  
Herbarium Specimens ◽  
Field Observations

scholarly journals Herbarium specimens can reveal impacts of climate change on plant phenology; a systematic review of methods and applications

2017 ◽  
Author(s):  
Casey A Jones ◽  
Curtis C Daehler
Keyword(s):  
Climate Change ◽  
Large Scale ◽  
Plant Phenology ◽  
Herbarium Specimen ◽  
Effect Of Temperature ◽  
Herbarium Specimens ◽  
Plant Responses ◽  
Grid Data ◽  
Recent Climate ◽  
Over Time

Studies in plant phenology have provided some of the best evidence for large-scale responses to recent climate change. Over the last decade, more than thirty studies have used herbarium specimens to analyze changes in flowering phenology over time. In this review, we summarize the approaches and applications used to date. Reproductive plant phenology has primarily been analyzed using two summary statistics, the mean flowering day of year and first flowering day of year, but mean flowering day has proven to be a more robust statistic. Three types of regression models have been applied to test for changes in phenology; flowering day regressed on year, flowering day regressed on temperature, and temperature regressed on year. Most studies analyzed the effect of temperature by averaging temperatures from three months prior to the date of flowering, but other approaches may be suitable in some cases. On average, published studies have used 55 herbarium specimens per species to characterize changes in phenology over time, but in many cases fewer specimens were used. Geospatial grid data is increasingly being used for determining average temperatures at herbarium specimen collection locations, allowing testing for finer scale correspondence between phenology and climate. Multiple studies have shown that inferences from herbarium specimen data are comparable to findings from systematically collected field observations. Herbarium specimens are expected to become an increasingly important resource for analyzing plant responses to climate change. As temperatures continue to rise globally, there is a need to understand phenological rates of change in response to warming and implications of these changes, especially in tropical environments where phenological studies are thus far generally lacking.

scholarly journals Leaf morphology shift linked to climate change

2012 ◽  
Vol 8 (5) ◽  
pp. 882-886 ◽  
Author(s):  
Greg R. Guerin ◽  
Haixia Wen ◽  
Andrew J. Lowe
Keyword(s):  
Climate Change ◽  
Leaf Area ◽  
Leaf Morphology ◽  
South Australia ◽  
Leaf Width ◽  
Maximum Temperature ◽  
Species Variation ◽  
Herbarium Specimens ◽  
Morphological Response ◽  
Climate Gradients

Climate change is driving adaptive shifts within species, but research on plants has been focused on phenology. Leaf morphology has demonstrated links with climate and varies within species along climate gradients. We predicted that, given within-species variation along a climate gradient, a morphological shift should have occurred over time due to climate change. We tested this prediction, taking advantage of latitudinal and altitudinal variations within the Adelaide Geosyncline region, South Australia, historical herbarium specimens ( n = 255) and field sampling ( n = 274). Leaf width in the study taxon, Dodonaea viscosa subsp. angustissima , was negatively correlated with latitude regionally, and leaf area was negatively correlated with altitude locally. Analysis of herbarium specimens revealed a 2 mm decrease in leaf width (total range 1–9 mm) over 127 years across the region. The results are consistent with a morphological response to contemporary climate change. We conclude that leaf width is linked to maximum temperature regionally (latitude gradient) and leaf area to minimum temperature locally (altitude gradient). These data indicate a morphological shift consistent with a direct response to climate change and could inform provenance selection for restoration with further investigation of the genetic basis and adaptive significance of observed variation.

Using herbarium specimens to select indicator species for climate change monitoring

2018 ◽  
Vol 27 (6) ◽  
pp. 1487-1501 ◽  
Author(s):  
Rebecca A. Hufft ◽  
Michelle E. DePrenger-Levin ◽  
Richard A. Levy ◽  
Melissa B. Islam
Keyword(s):  
Climate Change ◽  
Indicator Species ◽  
Herbarium Specimens ◽  
Change Monitoring

scholarly journals Projected Impact of Climate Change on Habitat Suitability of a Vulnerable Endemic Vachellia negrii (Pic.-Serm.) (Fabaceae) in Ethiopia

2021 ◽  
Vol 13 (20) ◽  
pp. 11275
Author(s):  
Arayaselassie Abebe Semu ◽  
Tamrat Bekele ◽  
Ermias Lulekal ◽  
Paloma Cariñanos ◽  
Sileshi Nemomissa
Keyword(s):  
Climate Change ◽  
Solar Radiation ◽  
Anthropogenic Impacts ◽  
Leading Edge ◽  
Range Shift ◽  
Suitable Habitat ◽  
Herbarium Specimens ◽  
Climate System Model ◽  
Precipitation Seasonality ◽  
Bioclimatic Variables

Species tend to shift their suitable habitat both altitudinally and latitudinally under climate change. Range shift in plants brings about habitat contraction at rear edges, forcing leading edge populations to explore newly available suitable habitats. In order to detect these scenarios, modeling of the future geographical distribution of the species is widely used. Vachellia negrii (Pic.-Serm.) Kyal. & Boatwr. is endemic to Ethiopia and was assessed as vulnerable due to changes to its habitat by anthropogenic impacts. It occurs in upland wooded grassland from 2000–3100 m.a.s.l. The main objective of this study is to model the distribution of Vachellia negrii in Ethiopia by using Maxent under climate change. Nineteen bioclimatic variables were downloaded from an open source. Furthermore, topographic position index (tpi), solar radiation index (sri) and elevation were used. Two representative concentration pathways were selected (RCP 4.5 and RC P8.5) for the years 2050 and 2070 using the Community Climate System Model (CCSM 5). A correlation analysis of the bioclimatic variables has resulted in the retention of 10 bioclimatic variables for modeling. Forty-eight occurrence points were collected from herbarium specimens. The area under curve (AUC) is 0.94, indicating a high-performance level of the model. The distribution of the species is affected by elevation (26.4%), precipitation of the driest month (Bio 14, 21.7%), solar radiation (12.9%) and precipitation seasonality (Bio15, 12.2%). Whereas the RCP 8.5 has resulted in decrease of suitable areas of the species from the current 4,314,153.94 ha (3.80%) to 4,059,150.90 ha (3.58%) in 2050, this area will shrink to 3,555,828.71 ha in 2070 under the same scenario. As climate change severely affects the environment, highly suitable areas for the growth of the study subject will decrease by 758,325 ha. The study’s results shows that this vulnerable, endemic species is facing habitat contraction and requires interventions to ensure its long-term persistence.

scholarly journals Bamboo diversity of Sulawesi, Indonesia

2018 ◽  
Vol 20 (1) ◽  
pp. 91-109
Author(s):  
DITA ERVIANTI ◽  
ELIZABETH A. WIDJAJA ◽  
AGUNG SEDAYU
Keyword(s):  
Climate Change ◽  
Field Experience ◽  
Herbarium Specimens ◽  
Basic Information ◽  
Identification Keys ◽  
The World ◽  
Dendrocalamus Asper

Ervianti D, Widjaja EA, Sedayu A. 2019. Bamboo diversity of Sulawesi, Indonesia. Biodiversitas 20: 91-109. Bamboo is one of the important plants in the world. Beside their economic important, bamboo also plays an important role in the environment for climate change. The purpose of this study was to inventory the bamboo diversity in Sulawesi. The methodology used in this study is by observing herbarium specimens kept in the Herbarium Bogoriense (BO) and field experience by the second author (EAW). The result showed that there are 39 species of 12 genera in Sulawesi, i.e. Bambusa blumeana, B. glaucophylla, B. maculata, B. multiplex, B. tuldoides, B. vulgaris, Chloothamnus sp., Dendrocalamus asper, Dinochloa albociliata, D. aopaensis, D. barbata D. cordata, D. erecta, D. hirsuta, D. morowaliensis, D. petasiensis, D. pubiramea , D. truncata, Dinochloa sp.1, Dinochloa sp.2, Dinochloa sp.3, Dinochloa sp.4, Dinochloa sp.5, Dinochloa sp.6, Dinochloa sp.7, Dinochloa sp.8, Dinochloa sp.9, Fimbribambusa sp., Gigantochloa apus, G. atroviolacea, G. atter, Neololeba atra, Phyllostachys aurea, Racemobambos celebica, Schizostachyum brachycladum, S. latifolium, S. lima, Sphaerobambos subtilis, and Thyrsostachys siamensis. Identification keys and descriptions are presented. This data reported will be used as basic information for bamboo conservation and bamboo industry.

scholarly journals Phenological responses to climate change based on a hundred years of herbarium collections of tropical Melastomataceae

PLoS ONE ◽  
2021 ◽  
Vol 16 (5) ◽  
pp. e0251360
Author(s):  
Duane F. Lima ◽  
José H. F. Mello ◽  
Isadora T. Lopes ◽  
Rafaela C. Forzza ◽  
Renato Goldenberg ◽  
...  
Keyword(s):  
Climate Change ◽  
Global Climate Change ◽  
Global Climate ◽  
Circular Statistics ◽  
Tropical Species ◽  
Herbarium Specimens ◽  
Phenological Data ◽  
Recent Climate ◽  
Herbarium Collections

Changes in phenological events have been vastly documented in face of recent global climate change. These studies are concentrated on temperate plants, and the responses of tropical species are still little understood, likely due to the lack of long-term phenological records in the tropics. In this case, the use of herbarium specimens to gather phenological data over long periods and wide geographic areas has emerged as a powerful tool. Here, we used four Melastomataceae species endemic to the Brazilian Atlantic Forest to evaluate phenological patterns and alterations as responses to recent climate changes. Phenological data were gathered from Reflora Virtual Herbarium specimens collected between 1920 and 2018, and analyzed with circular statistics applied to the intervals 1920–1979, 1980–1999, and 2000–2018. The effects of temperature range, average temperature, precipitation, and photoperiod on flowering and fruiting of each species were tested using multiple linear regressions. Through circular statistics, we detected changes, mostly delays, in the flowering of Miconia quinquedentata, Pleroma clavatum and P. trichopodum, and in the fruiting of M. acutiflora, P. clavatum and P. trichopodum. We also found that flowering and fruiting occurrence were related to local climatic conditions from months prior to the collections. We found marked phenological variations over the decades and also that these variations are associated to global climate change, adding up to the large body of evidence from higher latitudes. Our results also support herbarium collections as an important source for long-term tropical phenological studies. The lack of consistent patterns of responses among the four species (e.g. fruiting delayed two months in P. clavatum and advanced one month in M. acutiflora) suggests that climate change has unequal effects across tropical forests. This highlights the urgent need for further research to understand and forecast the ecological implications of these changes in global ecosystems processes.

scholarly journals Spatiotemporal variation in leaf size and shape in response to climate

2019 ◽  
Vol 13 (1) ◽  
pp. 87-96 ◽  
Author(s):  
Yaoqi Li ◽  
Dongting Zou ◽  
Nawal Shrestha ◽  
Xiaoting Xu ◽  
Qinggang Wang ◽  
...  
Keyword(s):  
Climate Change ◽  
Intraspecific Variation ◽  
Leaf Shape ◽  
Leaf Size ◽  
Leaf Length ◽  
Herbarium Specimens ◽  
Size And Shape ◽  
Length Width ◽  
Leaf Size And Shape ◽  
Over Time

Abstract Aims Morphological variation of leaves is a key indicator of plant response to climatic change. Leaf size and shape are associated with carbon, water and energy exchange of plants with their environment. However, whether and how leaf size and shape responded to climate change over the past decades remains poorly studied. Moreover, many studies have only explored inter- but not intraspecific variation in leaf size and shape across space and time. Methods We collected >6000 herbarium specimens spanning 98 years (1910–2008) in China for seven representative dicot species and measured their leaf length and width. We explored geographical patterns and temporal trends in leaf size (i.e. leaf length, leaf width and length × width product) and shape (i.e. length/width ratio), and investigated the effects of changes in precipitation and temperature over time and space on the variation in leaf size and shape. Important Findings After accounting for the effects of sampling time, leaf size decreased with latitude for all species combined, but the relationship varied among species. Leaf size and shape were positively correlated with temperature and precipitation across space. After accounting for the effects of sampling locations, leaf size of all species combined increased with time. Leaf size changes over time were mostly positively correlated with precipitation, whereas leaf shape changes were mostly correlated with temperature. Overall, our results indicate significant spatial and temporal intraspecific variation in leaf size and shape in response to climate. Our study also demonstrates that herbarium specimens collected over a considerable period of time provide a good resource to study the impacts of climate change on plant morphological traits.

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