scholarly journals Leaf-level photosynthetic capacity in lowland Amazonian and high-elevation Andean tropical moist forests of Peru

2016 ◽  
Vol 214 (3) ◽  
pp. 1002-1018 ◽  
Author(s):  
Nur H. A. Bahar ◽  
F. Yoko Ishida ◽  
Lasantha K. Weerasinghe ◽  
Rossella Guerrieri ◽  
Odhran S. O'Sullivan ◽  
...  
Keyword(s):  
Photosynthetic Capacity ◽  
High Elevation ◽  
Leaf Level

scholarly journals Leaf-level photosynthetic capacity dynamics in relation to soil and foliar nutrients along forest–savanna boundaries in Ghana and Brazil

2018 ◽  
Vol 38 (12) ◽  
pp. 1926-1926
Author(s):  
Agne Gvozdevaite ◽  
Imma Oliveras ◽  
Tomas Ferreira Domingues ◽  
Theresa Peprah ◽  
Mickey Boakye ◽  
...  
Keyword(s):  
Photosynthetic Capacity ◽  
Foliar Nutrients ◽  
Leaf Level

Rising CO2 and warming lead to declining global canopy demand for nitrogen

2021 ◽  
Author(s):  
Ning Dong ◽  
Iain Colin Prentice ◽  
Ian Wright ◽  
Xiangzhong Luo ◽  
Nick Smith
Keyword(s):  
Photosynthetic Capacity ◽  
Carbon Uptake ◽  
Global Pattern ◽  
N Limitation ◽  
The Past ◽  
Global Trend ◽  
Green Vegetation ◽  
Leaf Level ◽  
New Perspective ◽  
N Demand

<div> <p>Nitrogen (N) limitation constrains the magnitude of terrestrial carbon uptake in response to CO<sub>2 </sub>fertilization and climate change. However, the trajectory of N demand, and how it is influenced by continuing changes in CO<sub>2 </sub>and climate, is incompletely understood. We estimate recent changes in global canopy N demand based on a well-tested optimality hypothesis for the control of photosynthetic capacity (<em>V</em><sub>cmax</sub>). The predicted global pattern of optimal leaf-level <em>V</em><sub>cmax </sub>is similar to the pattern derived from remotely sensed chlorophyll retrievals. Over the period from 1982 to 2015, rising CO<sub>2­ </sub>and warming both contributed to decreasing leaf-level N demand. Widespread increases in green vegetation cover over the same period (especially in high latitudes) imply increasing total canopy N demand. The net global trend is, nonetheless, a decrease in total canopy N demand. This work provides a new perspective on the past, present and future of the global terrestrial N cycle.</p> </div>

scholarly journals Photosynthetic Activity of Four Florist Azalea Cultivars

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 682a-682
Author(s):  
C. Bellert ◽  
F. Gauthier ◽  
B. Dansereau
Keyword(s):  
Open System ◽  
Photosynthetic Activity ◽  
Photosynthetic Capacity ◽  
Dark Respiration ◽  
Model Parameters ◽  
Whole Plant ◽  
Leaf Level ◽  
Plant Level ◽  
Photosynthetic Assimilation ◽  
The Individual

The photosynthetic activity of four Rhododendron simsii cultivars `Dorothy Gish', `Paloma', `White Gish', and `Gloria' were studied at both the individual leaf level using a portable photosynthesis system (closed), or at the whole-plant level using assimilation chambers (semi-open system). Net photosynthetic assimilation curves in response to light in both systems will be established. The experimental points obtained will be adjusted to a photosynthetic model as described in the literature. The model parameters [original efficiency (α) dark respiration (Rd), maximum photosynthetic capacity to saturated light (Pmax)] will be presented. The evolution of these parameters will be presented as a function of the various stages of development. Also a comparison of the four cultivars will be shown.

Leaf-level photosynthetic capacity dynamics in relation to soil and foliar nutrients along forest–savanna boundaries in Ghana and Brazil

2018 ◽  
Vol 38 (12) ◽  
pp. 1912-1925 ◽  
Author(s):  
Agne Gvozdevaite ◽  
Imma Oliveras ◽  
Tomas Ferreira Domingues ◽  
Theresa Peprah ◽  
Mickey Boakye ◽  
...  
Keyword(s):  
Photosynthetic Capacity ◽  
Foliar Nutrients ◽  
Leaf Level

Changes in growth and photosynthetic capacity of rice with increased UV-B radiation

1991 ◽  
Vol 83 (3) ◽  
pp. 373-380 ◽  
Author(s):  
Alan H. Teramura ◽  
Lewis H. Ziska ◽  
A. Ester Sztein
Keyword(s):  
Photosynthetic Capacity

Current distribution of Nilgiri grass yellow Eurema nilgiriensis Yata (Lepidoptera: Pieridae), with an updated taxonomic key to Eurema of Western Ghats, India

ENTOMON ◽  
2019 ◽  
Vol 44 (1) ◽  
pp. 23-32 ◽  
Author(s):  
P. C. Sujitha ◽  
G. Prasad ◽  
R. Nitin ◽  
Dipendra Nath Basu ◽  
Krushnamegh Kunte ◽  
...  
Keyword(s):  
Current Distribution ◽  
Western Ghats ◽  
Original Description ◽  
High Elevation ◽  
Type Locality ◽  
Ecological Data ◽  
Field Identification ◽  
Wing Patterns ◽  
Southern Western Ghats ◽  
The Nilgiris

Eurema nilgiriensis Yata, 1990, the Nilgiri grass yellow, was described from Nilgiris in southern India. There are not many published records of this species since its original description, and it was presumed to be a high-elevation endemic species restricted to its type locality. Based on the external morphology (wing patterns) as well as the male genitalia, the first confirmed records of the species from Agasthyamalais and Kodagu in the southern Western Ghats, is provided here. This report is a significant range extension for the species outside the Nilgiris, its type locality. Ecological data pertaining to this species as well as the field identification key to all known Eurema of Western Ghats are also presented.

Assemblage Patterns of Hymenoptera at Different Elevations of Gunung Datuk, Rembau

2017 ◽  
Vol 14 (2) ◽  
pp. 1 ◽  
Author(s):  
Noor Nasuha Abd Aziz ◽  
Siti Khairiyah Mohd Hatta ◽  
Idris Abd Ghani ◽  
Saiyid Jalaluddin Saiyid Shaifuddin
Keyword(s):  
Species Richness ◽  
Diversity Index ◽  
High Elevation ◽  
Significant Difference ◽  
Index Site ◽  
Evenness Index ◽  
Abundance And Diversity ◽  
Richness Index ◽  
Paired T Test ◽  
Malaise Traps

A study on abundance and diversity of Hymenoptera was conducted in Gunung Datuk, Rembau. Samplings were conducted from November 2014 to February 2015 using six Malaise traps. Three traps were placed at Site 1 at 700m height for high elevation and the remaining traps were placed at Site 2 at 200m height for low elevation. A total number of 221 Hymenopteran were collected which consist of nine families namely Ichneumonidae, Formicidae, Braconidae, Bethylidae, Evaniidae, Tiphiidae, Vespidae, Pompilidae and Apidae. In this study, 93 individuals were obtained from Site 1, comprising nine families and 43 morphospecies while 127 individuals were obtained from Site 2 with nine families and 45 morphospecies. Formicidae was the most dominant family collected from both sites with a total of 104 individuals while the least family recorded was Apidae with only one individual. Shannon’s Weiner Diversity Index (H’) showed Site 1 had the higher diversity value with H’ = 3.17 compared to Site 2 with value H’ = 3.12. For Evenness Index, Site 1 had higher value compared to Site 2 with E’ = 0.84 and E’ = 0.82 respectively. Moreover, for Margalef Richness Index, Site 1 recorded R’ = 9.24 while site two recorded R’ = 9.08 which concluded that Site 1 had higher species richness compared to Site 2. Paired t-test showed that both sites had no significant difference with p>0.05. Overall study showed that the diversity and abundance of Hymenoptera in Gunung Datuk were low since the value of H’ is less than 3.50.

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