Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Jochen Kummerow"'
Publikováno v:
Plant and Soil. 131:225-228
The deciduous tropical dry forest at Chamela (Jalisco, Mexico) occurs in a seasonal climate with eight rainless (November through June) and four wet months (700 mm annual precipitation). The forest reaches a mean height of 10 m. Tree density in the r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00773e0cb29d6f58cd165525fd3b29c7
https://doi.org/10.1007/bf00009452
https://doi.org/10.1007/bf00009452
Publikováno v:
Annals of Botany. 67:97-101
The effect of varying independently nutrient solution temperature (5, 15, 25°C) and air temperature (10, 20, 30°C) on hydroponically grown Ceanothus greggii (Rhamnaceae) seedlings was studied. Increasing both air and solution temperatures caused hi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef0ed30004831cf33d6da48de111e1f6
https://doi.org/10.1093/oxfordjournals.aob.a088121
https://doi.org/10.1093/oxfordjournals.aob.a088121
Autor:
Jochen Kummerow, Anne Larigauderie
Publikováno v:
Ecography. 14:38-44
The purpose of the experiment was to see whether a change in nutrient availability resulting from perturbations might alter rates of development of the major plant growth forms of an arctic tussock tundra slope. Slow release fertilizer pellets (NPK)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0126016aabb008f9faef2472a6476160
https://doi.org/10.1111/j.1600-0587.1991.tb00631.x
https://doi.org/10.1111/j.1600-0587.1991.tb00631.x
Publikováno v:
Vegetatio. 90:73-80
Very limited information regarding fine-root growth and production of tropical dry forests is available. Fine roots and small roots are defined as rootlets with diameters < 1 mm and 1.1 to 5 mm, respectively. Live and dead fine-and small-root mass fl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a42de0649da6090e11f65be24ac0923f
https://doi.org/10.1007/bf00045590
https://doi.org/10.1007/bf00045590
Publikováno v:
Vegetatio. 87:37-44
Quercus coccifera L., the characteristic scrub oak of the garrigue, covers more than 100,000 ha in southern France alone. Precipitation in this area averages 900 mm/year and summer rains are not rare. A total belowground biomass of 7.2 kg/m2, includi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5311866aa016f5a75107c84ff2dc26ac
https://doi.org/10.1007/bf00045653
https://doi.org/10.1007/bf00045653
Autor:
G. M. Marion, Jochen Kummerow
Publikováno v:
Ecography. 13:50-55
Nitrogen (N) deficiencies in tundra ecosystems could be caused, in part, by the kinetics of root N uptake. The objectives of this study were to quantify NH4 uptake by field-grown excised roots of Eriophorum vaginatum I. under controlled NH4 concentra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71e416949a57e4c44357ffdffc489f19
https://doi.org/10.1111/j.1600-0587.1990.tb00588.x
https://doi.org/10.1111/j.1600-0587.1990.tb00588.x
Autor:
Jochen Kummerow, David Krause
Publikováno v:
Ecography. 5:187-193
Eriophorum vaginatum tillers were collected at Eagle Creek, Alaska and cultivated in aerated solutions under controlled environmental conditions. The nutrient solutions contained traces, 1.05 and 21 mg l−1 N (nitrate) and traces, 0.15 and 3.10 mg l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d02980eb8522514459cf2e0ea7c20ee
https://doi.org/10.1111/j.1600-0587.1982.tb01035.x
https://doi.org/10.1111/j.1600-0587.1982.tb01035.x
Publikováno v:
American Journal of Botany. 65:63-69
Ceanothus greggii var. perplexans is a common shrub in the southern California chaparral. Clusters of nodules found under the canopy of this species are modified roots which contain a nitrogen-fixing endophyte, Frankia ceanothi (Actinomycetales), wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07e27b5d201be6429823033dafa4f8b3
https://doi.org/10.1002/j.1537-2197.1978.tb10836.x
https://doi.org/10.1002/j.1537-2197.1978.tb10836.x
Publikováno v:
American Journal of Botany. 62:473-478
A B S T R A C T The sclerophyllous evergreen shrub vegetation of southern California and central Chile is characterized by several examples of morphologically similar species. For each one out of a group of four Californian shrub species, four morpho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8efb7c570b36b97c3be21577aae387fb
https://doi.org/10.1002/j.1537-2197.1975.tb14072.x
https://doi.org/10.1002/j.1537-2197.1975.tb14072.x