Phenology of northern populations of halophytic C3 and C4 grasses

1990 ◽  
Vol 68 (8) ◽  
pp. 1817-1821 ◽  
Author(s):  
A. G. Schwarz ◽  
R. E. Redmann
Keyword(s):  
Key Words ◽  
Plant Height ◽  
Niche Separation ◽  
C4 Grasses ◽  
Temporal Niche ◽  
Northern Latitudes ◽  
C3 And C4 Grasses ◽  
Agropyron Trachycaulum ◽  
Distichlis Stricta ◽  
Halophytic Grasses

Phenological analyses of halophytic grasses in Saskatchewan (52°N latitude) showed that regrowth began earlier in the C3 species, Agropyron trachycaulum (Link) Malte and Puccinellia nuttalliana (Schulte.) Hitchc. than in the C4 species, Spartina gracilis Trin. and Distichlis stricta (Torr.) Rydb. Maximum plant height was reached at about the same time in both C3 and C4 species. C3 grasses had the maximum number of green leaves per plant during spring and autumn, and C4 grasses had these during midsummer. Species on a strongly saline site (P. nuttalliana and D. stricta) began flowering earlier than those on a moderately saline site (A. trachycaulum and S. gracilis). Within each site, C3 and C4 species flowered almost simultaneously. The results indicate that at cool northern latitudes temporal niche separation in C3 and C4 grasses is most evident in vegetative characteristics. Key words: phenology, C3, C4, halophytes, temporal niche separation.

scholarly journals Tendencies towards a C4 Leaf: Quantitative Studies on Leaf Anatomy of Selected C3 and C4 Grasses

2018 ◽  
Vol 06 (01) ◽  
Author(s):  
Hiruni Nuwanthika Weerasooriya ◽  
Anil Jayasekera ◽  
Iroja Caldera
Keyword(s):  
Leaf Anatomy ◽  
C4 Grasses ◽  
Quantitative Studies ◽  
C3 And C4 Grasses

The distribution of C3 and C4 grasses in Australia in relation to climate

Oecologia ◽  
1983 ◽  
Vol 57 (1-2) ◽  
pp. 113-128 ◽  
Author(s):  
P. W. Hattersley
Keyword(s):  
C4 Grasses ◽  
C3 And C4 Grasses

scholarly journals Spatio-temporal niche separation of planktonicBetaproteobacteriain an oligo-mesotrophic lake

2008 ◽  
Vol 10 (8) ◽  
pp. 2074-2086 ◽  
Author(s):  
Michaela M. Salcher ◽  
Jakob Pernthaler ◽  
Michael Zeder ◽  
Roland Psenner ◽  
Thomas Posch
Keyword(s):  
Niche Separation ◽  
Temporal Niche ◽  
Mesotrophic Lake ◽  
Spatio Temporal

PERTUMBUHAN DAN PRODUKSI TANAMAN KACANG TANAH (Arachis hipogea) DAN SENGON (Paraserianthes falcataria) DI ANTARA TANAMAN KELAPA DI SUKABUMI JAWA BARAT

2020 ◽  
Vol 8 (4) ◽  
pp. 126
Author(s):  
HANDI SUPRIADI ◽  
H. T. LUNTUNGAN
Keyword(s):  
Key Words ◽  
Sea Level ◽  
Plant Height ◽  
Soil Type ◽  
Cocos Nucifera ◽  
Cropping System ◽  
Paraserianthes Falcataria ◽  
Number Of Leaves ◽  
Peanut Production ◽  
Female Flowers

<p>Penelitian dilaksanakan pada bulan Januari sampai dengan Desember 2001 di Desa Caringinnunggal, Kecamatan Waluran, Kabupaten Sukabumi, yang bcrada pada kelinggian 250 m di atas permukaan laut, tipe iklim B2 (Oldeman) dan jenis tanahnya Podsolik Merah Kuning. Rancangan yang digunakan dalam penelitian ini adalah rancangan acak kelompok dengan empat ulangan. Perlakuan model polatanam kelapa yang diuji sebagai berikut (1) kelapa + sengon 140 pohon/ha ♦ kacang tanah, (2) kelapa + sengon 280 pohon/ha + kacang tanah, (3) kelapa + sengon 420 pohon/ha ♦ kacang tanah, (4) kelapa + sengon 560 pohon/ha + kacang tanah, (5) kelapa + sengon 700 pohon/ha + kacang tanah dan (6) kelapa monokultur. 'Tujuan dai penelitian ini untuk mcngciahui pertumbuhan dan produksi dari beberapa model polatanam kelapa dengan tanaman sela kacang tanah dan sengon. Pengamatan dilakukan terhadap parameter agronomi meliputi data petumbuhan kacang tanah, sengon dan kelapa seta data produksi kacang tanah. Data yang diperoleh dianalisis dengan menggunakan sidik ragam dan dilanjutkan dengan uji BNJ. Hasil penelitian menunjukkan produktivitas kacang tanah pada polatanam kelapa * sengon 700 pohon/ha + kacang tanah prospektif dengan hasil mencapai 2 183 kg/ha dengan tinggi tanaman 30.25 cm dan polong isi sebanyak 9.65 buah. Sedang untuk tanaman sengon tingginya telah mencapai 312.3 cm dengan diameter 10.57 cm. Adanya tanaman sela diantara kelapa tidak menurunkan pembentukan jumlah daun, jumlah bunga betina dan jumlah tandan tanaman kelapa.</p><p>Kata kunci: Cocos nucifera, Paraserianthes falcataria, Arachis hipogea, polatanam</p><p> </p><p><strong>ABSTRACT</strong></p><p><strong>Growth and producion of peanut and albizia between coconut palms in Sukabumi, West Java</strong></p><p>The study was conducted from January to December 2001 at Caringinnunggal, Sukabumi 250 m above sea level with type of climate Bj according to Oldeman and soil type Red Yellow Podsolic. The expeiment was designed as a randomized block in 4 replicates. The cropping system models consisted of : (1) Coconut + albizia 140 trees/ha ♦ peanut (2) Coconut + albizia 280 trees/ha ♦ peanut. (3) Coconut + albizia 420 trees/ha + peanut, (4) Coconut + albizia 560 trees/ha + peanut, (5) Coconut + albizia 700 trees/ha + peanut and (6) Coconut as a control The purpose of this experiment was to know the growth and productivity of several fanning systems with intercrops in between coconut. The results of the research showed that the peanut production in the cropping system of coconut + albizia 700 trees/ha + peanut reached 2 183 kg/ha, peanut plant height 30.25 cm, mature pods 9.65/plant. While Ihe height of albizia plant reached 3)2.3 cm, stem diameter 10.57 cm. The intercrops planted in between the coconut palms did not reduce the number of leaves, the number of female flowers, and (he number of bunches.</p><p>Key words : Cocos nucifera, Paraserianthes falcataria. Arachis hipogea, cropping system, production</p>

scholarly journals Improved representation of plant functional types and physiology in the Joint UK Land Environment Simulator (JULES v4.2) using plant trait information

2016 ◽  
Author(s):  
Anna Harper ◽  
Peter Cox ◽  
Pierre Friedlingstein ◽  
Andy Wiltshire ◽  
Chris Jones ◽  
...  
Keyword(s):  
Climate Change ◽  
Leaf Nitrogen ◽  
Plant Functional Types ◽  
Deciduous Trees ◽  
C4 Grasses ◽  
Plant Trait ◽  
Functional Types ◽  
C3 And C4 Grasses ◽  
Hadley Centre ◽  
The Uk

Abstract. Dynamic global vegetation models are used to predict the response of vegetation to climate change. They are essential for planning ecosystem management, understanding carbon cycleclimate feedbacks, and evaluating the potential impacts of climate change on global ecosystems. JULES (the Joint UK Land Environment Simulator) represents terrestrial processes in the UK Hadley Centre family of models and in the first generation UK Earth System Model. Previously, JULES represented five plant functional types (PFTs): broadleaf trees, needle-leaf trees, C3 and C4 grasses, and shrubs. This study addresses three developments in JULES. First, trees and shrubs were split into deciduous and evergreen PFTs to better represent the range of leaf lifespans and metabolic capacities that exists in nature. Second, we distinguished between temperate and tropical broadleaf evergreen trees. These first two changes result in a new set of nine PFTs: tropical and temperate broadleaf evergreen trees, broadleaf deciduous trees, needle-leaf evergreen and deciduous trees, C3 and C4 grasses, and evergreen and deciduous shrubs. Third, using data from the TRY database, we updated the relationship between leaf nitrogen and the maximum rate of carboxylation of Rubisco (Vcmax), and updated the model phenology to include a trade-off between leaf lifespan and leaf mass per unit area.

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