نتایج جستجو برای: ruderal

تعداد نتایج: 246  

Journal: : 2023

Three-of-heaven (Ailanthus altissima (Mill.) Swingle) is considered as one of the most invasive plant species worldwide in rural and urban environment. Although tree-of-heaven commonly observed throughout city Osijek (Croatia), its prevalence frequency has not been documented. This study conducted from May to September 2022 streets determine distribution, abundance competitive advantage this sp...

2014
Shilpy Singhal Rup Narayan

Differing biomass allocation strategy could be a necessary plant-trait associated with invasive weeds in an alien environment. The present study focused on exploring differential biomass allocation pattern as an invasive plant-trait in the two pantropical invasive malvaceous weeds Sida acuta Burm f. and Sida cordifolia L. in an anthropic peri-urban vegetation in Indian dry tropics. Eighty plant...

2009
Kabir G. Peay Matteo Garbelotto Thomas D. Bruns

1. Abiotic disturbance plays an important role in determining assemblage structure and maintaining species richness in many ecosystems. Disturbances events are complex, often affecting multiple environmental parameters simultaneously and causing selective removal of biomass. For this reason, observational studies often fail to elucidate the primary mechanism by which disturbance modifies assemb...

2011
Rita S. L. Veiga Jan Jansa Emmanuel Frossard Marcel G. A. van der Heijden

BACKGROUND Arbuscular mycorrhizal fungi (AMF) are known for their beneficial effects on plants. However, there is increasing evidence that some ruderal plants, including several agricultural weeds, respond negatively to AMF colonization. Here, we investigated the effect of AMF on the growth of individual weed species and on weed-crop interactions. METHODOLOGY/PRINCIPAL FINDINGS First, under c...

2013
Kateřina ŠUMBEROVÁ Richard HRIVNÁK

Vegetation of ephemeral wetlands (class Isoëto-Nano-Juncetea) was studied in the Czech Republic and Slovakia using a formalised classifi cation approach. We analysed a set of phytosociological relevés recorded in the study region comprising 17583 relevés of wetlands and some types of ruderal vegetation. Formal defi nitions of particular associations were completed using a dataset of 1580 relevé...

Journal: :Remote Sensing 2012
András Zlinszky Werner Mücke Hubert Lehner Christian Briese Norbert Pfeifer

Outlining patches dominated by different plants in wetland vegetation provides information on species succession, microhabitat patterns, wetland health and ecosystem services. Aerial photogrammetry and hyperspectral imaging are the usual data acquisition methods but the application of airborne laser scanning (ALS) as a standalone tool also holds promises for this field since it can be used to q...

Journal: :Applied Vegetation Science 2021

Questions (a) Is forest temporal continuity an important factor in structuring the riparian plant communities along small alluvial valleys? (b) To what extent can distance from stream modulate effect of and provide a better understanding taxonomic functional structure these communities? Location Ouanne watershed, France. Methods We used paired-samples design, involving stands close to far strea...

2017
Werner Hilbig Christian Opp

Under the prevailing variable natural conditions nomadic pastoralism was the most suitable form of land use in Mongolia and the neighboring countries in the past. Furthermore, small areas were used for agriculture in some regions. Therefore, anthropogenic influence was present throughout history. In the forest steppe zone this led to the disappearance of forest sites which then gave way to mead...

2017
Manuel J. Steinbauer Severin D. H. Irl Juana María González‐Mancebo Frank T. Breiner Raquel Hernández‐Hernández Sebastian Hopfenmüller Yohannes Kidane Anke Jentsch Carl Beierkuhnlein

Ecosystems that provide environmental opportunities but are poor in species and functional richness generally support speciation as well as invasion processes. These processes are expected not to be equally effective along elevational gradients due to specific ecological, spatial, and anthropogenic filters, thus controlling the dispersal and establishment of species. Here, we investigate specia...

2017
Jens D. Berger Damber Shrestha Christiane Ludwig

To investigate wild and domesticated Mediterranean annual reproductive strategies, common garden comparisons of Old World lupins collected along aridity gradients were initiated. These are excellent candidates for ecophysiology, being widely distributed across contrasting environments, having distinct domestication histories, from ancient Lupinus albus to recently domesticated Lupinus angustifo...

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