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389 results for “herbs”

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edi56/100

Herb Survey: Effect of Burning Patterns on Vegetation in the Fish Lake Burn Compartments

This study examines the effects of long-term prescribed burning treatments on vegetation structure and composition, productivity, and nutrient cycling in upland oak savanna and woodland vegetation. The basis for the study is an ongoing, experimental prescribed burning program begun in 1964 at Cedar Creek, and a similar program operating since 1962 on the adjacent Helen Allison Savanna property (owned by The Nature Conservancy). These prescribed burning programs are designed to subject upland oak communities (and some old fields) to different burn frequencies and patterns of burning, with the ultimate objectives of 1) restoring and maintaining the historically important savanna and open woodland vegetation, and 2) providing information about the effects of different burning patterns on vegetation structure and composition. This study addresses the latter of these two purposes and expands on it by also investigating possible influences of fire on resource availability (nutrients, water, and light) and net primary productivity. This study represents a continuation and expansion of experiments 015 and 094.

openCC0Sep 2025View details →

zenodo44/100

Hans Ludwig Herb (h0750)

-- <a href="https://doi.org/10.5281/zenodo.11582199">Documentation</a> -- Name: Hans Ludwig Herb musiXplora-ID: h0750 musiXplora-URI: <a href="https://musixplora.de/mxp/h0750">https://musixplora.de/mxp/h0750</a> Gender: m First Mentioned: 1657 Sectors: Instrumentenbau Professions (Historical): Trompetenmacher Professions (Musical): Blechblasinstrumentenbauer Other Places of Activity: Nürnberg Changelog:   - v0.0.1: Initial Upload.

opencc-by-4.0Jun 2024View details →

zenodo44/100

Herb biomass estimation at Mt. Kilimanjaro

Herb biomass 1m^2 measured in 4 subsamples in KiLi project. For the herbaceous biomass, four 0.25-m2 samples per plot were taken non-randomly from areas were the herbaceous layer was considered as being representative of the whole plot. The biomass of the herbaceous layer (hereafter herbaceous biomass) included forbs with a woody stem, mosses and lichens, which were collected from ground level using a wooden frame of 50 × 50 cm and scissors. Samples were dried in a drying oven at 72°C for 72 hours and then weighed. In habitat types with pronounced rainfall seasons (savanna, maize fields, grasslands, coffee plantations, home gardens), biomass was collected after the wet season maximum, in December and January 2010–2011, while in the maize plots, it was collected in June and July 2012, shortly before the harvest. The other samples were collected between December 2010 and October 2012. This allowed us to estimate the maximum standing biomass of the herbaceous layer on each plot. The KiLi project (2010-2018) is a German Science Foundation (DFG) funded research unit (DFG research unit FOR1246) that focuses on biodiversity and ecosystem processes along altitudinal and disturbance gradients on Mt. Kilimanjaro (Tanzania, Africa), capitalizing on its world-wide unique range of climatic and vegetation zones. The research unit comprises 2 central projects and 7 subprojects from various disciplines. On a total of 60 study sites in both natural and human-disturbed ecosystems biodiversity (e.g. plants, soil arthropods, ants, bees, frogs, lizards, bats, birds), related ecosystem processes (decomposition, seed dispersal, pollination, herbivory, predation), and biogeochemical processes and properties of ecosystems (climate, soil properties and nutrient status, regulation of water and carbon fluxes, trace gas emissions, primary productivity, functional diversity) are analyzed.

opencc-by-4.0Oct 2024View details →

zenodo44/100

BgMA-ESy: Expert system for automatic classification of vegetation plots of subalpine tall-herb vegetation (class Mulgedio-Aconitetea) from Bulgaria

***** BgMA-ESy is an expert system that classifies vegetation plots of the class Mulgedio-Aconitetea (<a href="https://doi.org/10.1111/avsc.12257">Mucina et al. 2016</a>) occurring in Bulgaria. The expert system can be run using the JUICE program (<a href="https://doi.org/10.1111/j.1654-1103.2002.tb02069.x">Tichý 2002</a>; <a href="https://www.sci.muni.cz/botany/juice/">https://www.sci.muni.cz/botany/juice/</a>). The aggregation of vascular plants included within the BgMA-ESy is adopted from EUNIS-ESy (<a href="https://doi.org/10.1111/avsc.12519">Chytrý et al. 2020</a>; <a href="https://doi.org/10.5281/zenodo.4812736">https://doi.org/10.5281/zenodo.4812736</a>), and in a few cases, it is adjusted. ***** Specifications The analyzed data (vegetation plots) cannot:  <ul> <li>include scrub vegetation (cover of tall shrub species > 8%; e.g., Pinus mugo, Salix spp.).</li> <li>contain tree species with cover > 1% (e.g., Fagus sylvatica, Picea abies).</li> <li>contain Pteridium aquilinum as a dominant species.</li> </ul> The expert system was trained on vegetation plots with 5–100 m2 area that occur above 1000 m a. s. l. * Exceptions from EUNIS-ESy aggregation: Heracleum sphondylium agg. does not include H. sphondylium subsp. verticillatum.   ***** When using this work, please cite: Szokala D., Kočí M. & Vassilev K. (2024): Subalpine tall-herb vegetation in Bulgaria: diversity and ecology. – Plant Biosystems 158: 490–510. <a href="https://doi.org/10.1080/11263504.2024.2327865">https://doi.org/10.1080/11263504.2024.2327865</a>. *****

opencc-by-4.0Sep 2023View details →

edi44/100

Baltimore Ecosystem Study: Riparian vegetation data - 3 of 11 - 1999 riparian herb data

This is one of 11 datasets generated in a study of riparian vegetation in the Baltimore Ecosystem Study from 1999-2004. Comparisons of vegetation between the rural/suburban (upper) and urban (lower) sections of the watershed show distinct patterns across an urban to rural gradient. In the lower, more urban section of the watershed, wetland tree species are either absent or occur as small stems while upland species are abundant, in mixed sizes. A comparison of the number of wetland and upland species in the mostly urbanized Gwynns Falls riparian zone with non-urbanized Piedmont floodplains throughout Maryland shows approximately twice as many upland species in the urban floodplain than in non-urbanized floodplains. The majority of shrubs in riparian zones through the Gwynns Falls are upland species. For herbaceous species, frequencies of upland and wetland species are about equal in the upper and middle regions of the watershed, but upland species are more common in the more urban lower floodplains by a factor of greater than two.

openCC (other)Feb 2016View details →

edi44/100

Baltimore Ecosystem Study: Riparian vegetation data - 8 of 11 - 2004_riparian herb data

openCC (other)Feb 2016View details →

edi44/100

Herb coverage on southern pine beetle and non-southern pine beetle impacted permanent plots in Coweeta white pine watershed 1 from 2001 to 2003

Percent cover of herb layer species was compared between beetle-impacted and non-beetle-impacted white pine plots in watershed 1.

openCustomJan 2020View details →

zenodo40/100

Can root-associated fungi mediate the impact of abiotic conditions on the growth of a High Arctic herb?

This is a dataset containing fragments of internal transcribed spacer 2 (ITS2) extracted from Bistorta vivipara root-associated fungi, sampled from snow fence experiment in Adventdalen, Svalbard.  This dataset was used in Wutkowska et al., 2020, Can root-associated fungi mediate the impact of abiotic conditions on the growth of a High Arctic herb?Can root-associated fungi mediate the impact of abiotic conditions on the growth of a High Arctic herb? [available at biorXiv.org, DOI: 10.1101/2020.06.20.157099] Now the manuscript is available as a peer-reviewed paper: Wutkowska, Magdalena, Dorothee Ehrich, Sunil Mundra, Anna Vader, and Pernille Bronken Eidesen. 2021. ‘Can Root-Associated Fungi Mediate the Impact of Abiotic Conditions on the Growth of a High Arctic Herb?’ Soil Biology and Biochemistry 159:108284. doi: 10.1016/j.soilbio.2021.108284.   All other corresponding data are available here: https://github.com/magdawutkowska/bistorta

opencc-by-4.0Dec 2020View details →

dryad40/100

Variation in the location and timing of experimental severing demonstrates that the persistent rhizome serves multiple functions in a clonal forest understory herb

1. In clonal plants, persistent rhizomes can serve multiple purposes, including resource storage, modulation of heterogenous resource distributions, maintenance of bud banks and promotion of recovery from disturbance. Clonal plants are commonly long-lived and, in temperate zones, often exhibit organ preformation. Thus, investigations of how the timing of disturbance to the rhizome affects plant performance must occur over multiple growing seasons, but these types of studies are rare. 2. We conducted a field experiment to examine how the persistent rhizome supports the existing shoot, new ramet production, and recovery from damage using mayapple (Podophyllum peltatum; Berberidaceae), a common herbaceous perennial of low-light forest understories in Eastern North America. Mayapple maintains a long-lived rhizome and exhibits a developmentally-programmed seasonal pattern of resource transport and new ramet initiation. We varied both the position and timing of rhizome severing in rhizome systems with terminal sexual or vegetative shoots, and tracked plants for two years following severing. 3. The location and timing of severing affected both plant persistence (production of new shoots) and performance (leaf area), with effects differing for new shoots at the front vs. the back of the rhizome system. Across years, severing location and past years' shoot size influenced plant persistence and performance, while the effect of timing of severing diminished; initial sexual status had little effect on rhizome system response that was not accounted for by initial leaf area. Severing generally led to the establishment of two independent rhizome systems. Relative to unmanipulated control systems, these two systems had more total leaf area, but less average leaf area per system. 4. Synthesis. Our results point to the rhizome as a resource integrator that affects plant responses to disturbance immediately following damage and in subsequent growing seasons. Rhizome bud age and/or subtending rhizome size, and developmental program influence responses to disturbance. While the effects of experimental disturbance on plant performance decreased two years after disturbance, further long-term investigation is needed to fully understand the demographic consequences of damage to persistent rhizomes.

opencc-zeroOct 2021View details →

dryad40/100

Data from: Context matters: the landscape matrix determines the population genetic structure of temperate forest herbs across Europe

Context. Plant populations in agricultural landscapes are mostly fragmented and their functional connectivity often depends on seed and pollen dispersal by animals. However, little is known about how the interactions of seed and pollen dispersers with the agricultural matrix translate into gene flow among plant populations. Objectives. We aimed to identify effects of the landscape structure on the genetic diversity within, and the genetic differentiation among, spatially isolated populations of three temperate forest herbs. We asked, whether different arable crops have different effects, and whether the orientation of linear landscape elements relative to the gene dispersal direction matters. Methods. We analysed the species' population genetic structures in seven agricultural landscapes across temperate Europe using microsatellite markers. These were modelled as a function of landscape composition and configuration, which we quantified in buffer zones around, and in rectangular landscape strips between, plant populations. Results. Landscape effects were diverse and often contrasting between species, reflecting their association with different pollen- or seed dispersal vectors. Differentiating crop types rather than lumping them together yielded higher proportions of explained variation. Some linear landscape elements had both a channelling and hampering effect on gene flow, depending on their orientation. Conclusions. Landscape structure is a more important determinant of the species' population genetic structure than habitat loss and fragmentation per se. Landscape planning with the aim to enhance the functional connectivity among spatially isolated plant populations should consider that even species of the same ecological guild might show distinct responses to the landscape structure.

opencc-zeroDec 2021View details →

zenodo40/100

Lám. 84.–Oxalis latifolia, a, d) Liérganes, Cantabria (ex herb. Sánchez Pedraja 8358); b, c) Riotuerto, Cantabria (ex herb. Sánchez Pedraja 8206); e) Treceño, Cantabria (ex herb. Sánchez Pedraja 8212): a) base de la planta; b) hoja; c) detalle del seno del folíolo; d) bráctea; e) semilla. O. vallicola, f, j) Logroño, La Rioja (ex herb. Sánchez Pedraja 8215); g-i) Laguardia, Álava (ex herb. Sánchez Pedraja 8275): f, g) base de la planta; h) hoja; i) detalle del margen foliar; j) bráctea. O. debilis, k-n) Sueca, Valencia (ex herb. Sánchez Pedraja 9528): k) base de la planta; l) hoja; m) detalle del margen foliar; n) bráctea. in Rhamnaceae- Polygalaceae

Lám. 84.–Oxalis latifolia, a, d) Liérganes, Cantabria (ex herb. Sánchez Pedraja 8358); b, c) Riotuerto, Cantabria (ex herb. Sánchez Pedraja 8206); e) Treceño, Cantabria (ex herb. Sánchez Pedraja 8212): a) base de la planta; b) hoja; c) detalle del seno del folíolo; d) bráctea; e) semilla. O. vallicola, f, j) Logroño, La Rioja (ex herb. Sánchez Pedraja 8215); g-i) Laguardia, Álava (ex herb. Sánchez Pedraja 8275): f, g) base de la planta; h) hoja; i) detalle del margen foliar; j) bráctea. O. debilis, k-n) Sueca, Valencia (ex herb. Sánchez Pedraja 9528): k) base de la planta; l) hoja; m) detalle del margen foliar; n) bráctea.

opencc-by-4.0Dec 2015View details →

zenodo40/100

Fig. 1 in A Case Study Of The Herb-Dwelling Spider Assemblages (Aranei) In A Meadow Under The Power Transmission Lines In Ukrainian Carpathians

Fig. 1. Number of individuals collected at the different distances from high voltage power line near Irliava village, August 2012 (SD — standard deviation).

opencc-by-4.0Jan 2015View details →

zenodo40/100

Fig. 2 in A Case Study Of The Herb-Dwelling Spider Assemblages (Aranei) In A Meadow Under The Power Transmission Lines In Ukrainian Carpathians

Fig. 2. Total eudominants and dominants, recedents and subrecedents relative abundance, Shannon and Pielou indexes values at the different distances from high voltage power line near Irliava village (according to the two year samples).

opencc-by-4.0Jan 2015View details →

dryad40/100

Data from: Different taxonomic and functional indices complement the understanding of herb-layer community assembly patterns in a southern-limit temperate forest

The efficient conservation of vulnerable ecosystems in the face of global change requires a complete understanding of how plant communities respond to various environmental factors. We aim to demonstrate that a combined use of different approaches, traits, and indices representing each of the taxonomic and functional characteristics of plant communities will give complementary information on the factors driving vegetation assembly patterns. We analyzed variation across an environmental gradient in taxonomic and functional composition, richness, and diversity of the herb-layer of a temperate beech-oak forest that was located in northern Spain. We measured species cover and four functional traits: leaf dry matter content (LDMC), specific leaf area (SLA), leaf size, and plant height. We found that light is the most limiting resource influencing herb-layer vegetation. Taxonomic changes in richness are followed by equivalent functional changes in the diversity of leaf size but by opposite responses in the richness of SLA. Each functional index is related to different environmental factors even within a single trait (particularly for LDMC and leaf size). To conclude, each characteristic of a plant community is influenced by different and even contrasting factors or processes. Combining different approaches, traits, and indices simultaneously will help us understand how plant communities work.

opencc-zeroDec 2021View details →

zenodo40/100