Results 21 to 30 of about 11,818 (219)

Spatio-temporal modelling of forest monitoring data: Modelling German tree defoliation data collected between 1989 and 2015 for trend estimation and survey grid examination using GAMMs

open access: yes, 2018
Spatio-temporal modelling of tree defoliation data of German forest condition survey is presented. In the present study generalized additive mixed models were used to estimate the spatio-temporal trends of defoliation of the main tree species from 1989 ...
Augustin, Nicole H.   +2 more
core   +1 more source

Direct and Indirect Influence of Non-Native Neighbours on Pollination and Fruit Production of a Native Plant [PDF]

open access: yes, 2015
Entomophilous non-native plants can directly affect the pollination and reproductive success of native plant species and also indirectly, by altering the composition and abundance of floral resources in the invaded community.
Montero-Castaño, Ana, Vilà, Montserrat
core   +1 more source

Comparative study of plum cultivars belonging to different taxons during 1980-1996

open access: yesInternational Journal of Horticultural Science, 2004
The program of the Research Institute of Cegléd, comprises the acclimation and selection of 7 Prunus-species and 39 cultivars grafted on Myrobalan C. 679 (P. cerasifera) seedling stocks. In addition two varieties have been investigated on three different
D. Surányi, Z. Erdős
doaj   +1 more source

Identification of Primary Metabolite Profiles Reveals Quality Characteristics of Citrus maxima ‘Shatian Yu’ from Different Origins

open access: yesCurrent Issues in Molecular Biology
Citrus maxima ‘Shatian Yu’ displays varying nutritional profiles influenced by its production area. This study evaluated pomelo fruits from four primary and one developing ‘Shatian Yu’ production area. Notably, ‘Shatian Yu’ from the Guilin area exhibited
Yujiao Peng   +6 more
doaj   +1 more source

Foliar Nutrient Concentrations of European Beech in Switzerland: Relations With Nitrogen Deposition, Ozone, Climate and Soil Chemistry

open access: yesFrontiers in Forests and Global Change, 2020
Excess deposition of the mineral nutrient nitrogen (N) is a serious threat for European forests. Its effect on foliar nutrient concentrations of Fagus sylvatica, along with other predictors, was analyzed in the present study which bases on 30 year's ...
Sabine Braun   +2 more
doaj   +1 more source

Primordia initiation of mushroom (Agaricus bisporus) strains on axenic casing materials [PDF]

open access: yes, 2003
The mushroom (Agaricus bisporus) has a requirement for a ‘‘casing layer’’ that has specific physical, chemical and microbiological properties which stimulate and promote the initiation of primordia.
Dobrovin-Pennington, Andreja   +6 more
core   +1 more source

Impact of river management history on the community structure, species composition and nutrient status in the Rhine alluvial hardwood forest [PDF]

open access: yes, 1998
The present-day Rhine alluvial hardwood forest (Querco-Ulmetum minoris, Issler 24) in the upper Rhine valley (France/Germany) is comprised of three vegetation units, one still flooded by calm waters (F) and the two others unflooded, one for 30 years ...
Trémolières, Michèle   +3 more
core   +2 more sources

Fenologia reprodutiva do maracujazeiro-azedo no município de Campos dos Goytacazes, RJ Reproductive phenological of passion fruit in Campos dos Goytacazes, RJ, Brazil

open access: yesCiência Rural, 2012
Este estudo teve como objetivo caracterizar a fenologia reprodutiva do maracujazeiro-azedo no período de setembro de 2009 a setembro de 2010, nas condições do município de Campos dos Goytacazes-RJ (21° 45'W; 41°20'S).
Sérgio Alessandro Machado Souza   +3 more
doaj   +1 more source

Exploring Costa Rica's fungal trends: Insights from digitized specimens

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Fungi are essential to tropical ecosystems but remain largely absent from conservation agendas. By analyzing over 78,000 fungal records from Costa Rica—a globally recognized biodiversity hotspot—this study reveals key patterns in fungal diversity, distribution, and seasonality.
Melissa Mardones   +2 more
wiley   +1 more source

Variability of morphological features, bud burst and flowering of Norway spruce (Picea abies [L.] Karst.) in the seed orchard of the Bielsk Forest District

open access: yesLeśne Prace Badawcze, 2015
The main aim of this paper was to characterize Norway spruce clones in terms of bud burst, flowering and morphological features. Observation and measurements were carried out in the Norway spruce seed orchard of the Bielsk Forest District in the north ...
Mioduszewski Sławomir, Rzońca Marek
doaj   +1 more source

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