Results 41 to 50 of about 122,937 (167)

Site-specific fertilization approach increased productivity of rainfed ‘Ataúlfo’ mango

Terra Latinoamericana, 2019
There is considerable diversity in fertilization management of ‘Ataúlfo’ mango (Mangifera indica L.) in the state of Nayarit, Mexico, and there is no systematic information available in this regard.
Samuel Salazar-García, Martha Elva Ibarra-Estrada, Edgardo Federico Hernández-Valdés, Raúl Medina-Torres, Luis Enrique Fregoso-Tirado   +4 more
doaj   +1 more source

Aboveground Net Primary Productivity in a Riparian Wetland Following Restoration of Hydrology

Biology, 2016
This research presents the initial results of the effects of hydrological restoration on forested wetlands in the Mississippi alluvial plain near Memphis, Tennessee.
Melissa Koontz, Christopher Lundberg, Robert Lane, John Day, Reza Pezeshki   +4 more
doaj   +1 more source

Time consumption and productivity of a forwarder operating on a slope in a cut-to-length harvest system in a Pinus radiata D. Don pine plantation

Journal of Forest Science, 2017
Time consumption and productivity of a Valmet 890.3 8 wheel forwarder were evaluated on an Australian radiata pine clearfell site with a slope of 21 to 45% (12 to 24°). Cycle time was significantly related to extraction distance.
Martin STRANDGARD, Rick MITCHELL, Mauricio ACUNA   +2 more
doaj   +1 more source

Primary production efficiency in different environmental settings of Sahstradhara hill-stream, Dehradun

Environment Conservation Journal, 2005
An investigation was conducted on primary productivity and water quality of Sahastradhra hill-stream for evaluation of  aquatic  ecosystem status  in different  environmental settings  along  with  the stream.
P. K. Bharti, D. S. Malik
doaj   +1 more source

Hariliku kuuse (Picea abies (L.) H. Karst.) kändude juurimise tootlikkus juurimisagregaadiga Pallari KH-160 neljal Eesti katsealal

Metsanduslikud Uurimused
The aim of this paper was to provide an overview of the productivity of the stump lifting device Pallari KH-160, the distribution of working time, and to assess the dependence of the time and productivity of lifting operations on stump diameter in four ...
Kurvits Vahur, Muiste Peeter, Padari Allar, Uri Veiko   +3 more
doaj   +1 more source

Intra-specific variation in mortality of even-aged Cryptomeria japonica (L. f.) D. Don. forests can be explained using relationships among long-term stand characteristics

Annals of Forest Science
Context Understanding tree mortality is critical for sustainable forest management. Long-term tree mortality may differ depending on the stand development process and can be influenced by forest management regimes.
Keiko Fukumoto, Tomohiro Nishizono, Fumiaki Kitahara   +2 more
doaj   +1 more source

Latitudinal effects on crown shape evolution

Ecology and Evolution, 2018
Large variations in crown shape are observed across the globe, from plants with wide and deep crowns to those with leaves clustered at the top. While there have been advances in the large‐scale monitoring of forests, little is known about factors driving
Magnus Lindh, Daniel S. Falster, Lai Zhang, Ulf Dieckmann, Åke Brännström   +4 more
doaj   +1 more source

Study of relationship between time overrun and productivity on construction sites [PDF]

International Journal of Construction Supply Chain Management, 2011
The history of the construction industry worldwide is full of projects that were completed with significant time and cost overruns. In an attempt to reverse this trend, this study aims at establishing the relationship between time overrun and labour ...
Ameh, Oko John, Osegbo, Emeka Emmanuel
doaj  

Response of temperate grasslands at different altitudes to simulated summer drought differed but scaled with annual precipitation [PDF]

Biogeosciences, 2009
Water is an important resource for plant life. Since climate scenarios for Switzerland predict an average reduction of 20% in summer precipitation until 2070, understanding ecosystem responses to water shortage, e.g. in terms of plant productivity, is of
N. Buchmann, A. K. Gilgen
doaj  

A two-scale framework for mapping site productivity of Eucalyptus globulus Labill. plantations in northern Spain in the context of climate change and using spatially explicit environmental variables as predictors

Forest Ecosystems
This research aimed to obtain accurate estimates of the productivity of eucalyptus plantations under different climate change scenarios without the need for additional fieldwork.
Iyán Teijido-Murias, Carlos A. López-Sánchez, Pilar García-Manteca, Juan Daniel García-Villabrille, Alberto Rojo-Alboreca, Federico Ruiz, Marcos Barrio-Anta   +6 more
doaj   +1 more source